./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.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_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0 --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b06fba6fbf61d996c1af57497d908c6dba492febf0212a36ee7b28f5806d365e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 16:22:59,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 16:22:59,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 16:22:59,323 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 16:22:59,324 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 16:22:59,326 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 16:22:59,330 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 16:22:59,332 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 16:22:59,335 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 16:22:59,337 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 16:22:59,338 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 16:22:59,344 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 16:22:59,345 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 16:22:59,352 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 16:22:59,355 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 16:22:59,358 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 16:22:59,360 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 16:22:59,363 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 16:22:59,366 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 16:22:59,369 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 16:22:59,371 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 16:22:59,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 16:22:59,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 16:22:59,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 16:22:59,381 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 16:22:59,381 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 16:22:59,382 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 16:22:59,383 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 16:22:59,384 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 16:22:59,385 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 16:22:59,386 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 16:22:59,387 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 16:22:59,388 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 16:22:59,389 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 16:22:59,391 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 16:22:59,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 16:22:59,393 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 16:22:59,393 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 16:22:59,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 16:22:59,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 16:22:59,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 16:22:59,401 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-22 16:22:59,452 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 16:22:59,453 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 16:22:59,454 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 16:22:59,454 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 16:22:59,456 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 16:22:59,456 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 16:22:59,457 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 16:22:59,457 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 16:22:59,457 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 16:22:59,458 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-22 16:22:59,459 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 16:22:59,459 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 16:22:59,459 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 16:22:59,460 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-22 16:22:59,460 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-22 16:22:59,460 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-22 16:22:59,460 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 16:22:59,461 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-22 16:22:59,461 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 16:22:59,461 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 16:22:59,462 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 16:22:59,462 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 16:22:59,462 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 16:22:59,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 16:22:59,463 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 16:22:59,463 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 16:22:59,463 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 16:22:59,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 16:22:59,464 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 16:22:59,464 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b06fba6fbf61d996c1af57497d908c6dba492febf0212a36ee7b28f5806d365e [2021-11-22 16:22:59,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 16:22:59,820 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 16:22:59,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 16:22:59,824 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 16:22:59,825 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 16:22:59,827 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i [2021-11-22 16:22:59,930 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/data/03ec60961/4bacd3c38d574397b15503c522bf73e8/FLAG917a98254 [2021-11-22 16:23:00,732 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 16:23:00,734 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i [2021-11-22 16:23:00,777 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/data/03ec60961/4bacd3c38d574397b15503c522bf73e8/FLAG917a98254 [2021-11-22 16:23:00,842 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/data/03ec60961/4bacd3c38d574397b15503c522bf73e8 [2021-11-22 16:23:00,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 16:23:00,851 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 16:23:00,855 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 16:23:00,855 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 16:23:00,859 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 16:23:00,861 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:23:00" (1/1) ... [2021-11-22 16:23:00,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@201f83bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:23:00, skipping insertion in model container [2021-11-22 16:23:00,866 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:23:00" (1/1) ... [2021-11-22 16:23:00,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 16:23:00,963 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 16:23:01,520 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_1e2c48c3-80d6-4ce0-a775-022619c6dac1/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i[33022,33035] [2021-11-22 16:23:01,840 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:23:01,851 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) [2021-11-22 16:23:01,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@542c8b33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:23:01, skipping insertion in model container [2021-11-22 16:23:01,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 16:23:01,855 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-22 16:23:01,859 INFO L158 Benchmark]: Toolchain (without parser) took 1006.81ms. Allocated memory is still 92.3MB. Free memory was 55.9MB in the beginning and 48.8MB in the end (delta: 7.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-22 16:23:01,871 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 92.3MB. Free memory is still 47.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 16:23:01,873 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1000.26ms. Allocated memory is still 92.3MB. Free memory was 55.7MB in the beginning and 48.8MB in the end (delta: 6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-22 16:23:01,874 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 92.3MB. Free memory is still 47.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1000.26ms. Allocated memory is still 92.3MB. Free memory was 55.7MB in the beginning and 48.8MB in the end (delta: 6.9MB). Peak memory consumption was 8.4MB. 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_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0 --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b06fba6fbf61d996c1af57497d908c6dba492febf0212a36ee7b28f5806d365e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 16:23:04,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 16:23:04,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 16:23:04,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 16:23:04,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 16:23:04,513 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 16:23:04,515 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 16:23:04,523 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 16:23:04,527 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 16:23:04,533 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 16:23:04,535 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 16:23:04,537 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 16:23:04,538 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 16:23:04,541 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 16:23:04,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 16:23:04,550 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 16:23:04,552 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 16:23:04,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 16:23:04,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 16:23:04,569 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 16:23:04,571 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 16:23:04,576 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 16:23:04,580 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 16:23:04,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 16:23:04,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 16:23:04,597 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 16:23:04,597 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 16:23:04,600 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 16:23:04,601 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 16:23:04,602 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 16:23:04,603 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 16:23:04,604 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 16:23:04,606 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 16:23:04,607 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 16:23:04,609 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 16:23:04,609 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 16:23:04,611 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 16:23:04,611 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 16:23:04,611 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 16:23:04,613 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 16:23:04,614 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 16:23:04,615 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-22 16:23:04,666 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 16:23:04,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 16:23:04,667 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 16:23:04,667 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 16:23:04,670 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 16:23:04,670 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 16:23:04,670 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 16:23:04,671 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 16:23:04,671 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 16:23:04,671 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-22 16:23:04,673 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 16:23:04,673 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 16:23:04,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 16:23:04,673 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-22 16:23:04,674 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-22 16:23:04,674 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-22 16:23:04,674 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 16:23:04,675 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-22 16:23:04,675 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-22 16:23:04,675 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-22 16:23:04,675 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 16:23:04,676 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 16:23:04,676 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 16:23:04,676 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 16:23:04,676 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 16:23:04,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 16:23:04,677 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 16:23:04,678 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 16:23:04,678 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-22 16:23:04,678 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-22 16:23:04,678 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 16:23:04,679 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-22 16:23:04,679 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_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b06fba6fbf61d996c1af57497d908c6dba492febf0212a36ee7b28f5806d365e [2021-11-22 16:23:05,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 16:23:05,166 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 16:23:05,169 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 16:23:05,172 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 16:23:05,172 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 16:23:05,176 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i [2021-11-22 16:23:05,259 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/data/2199ad067/95a3dd57be064325af58367756fa7b9a/FLAGd4a1e0a39 [2021-11-22 16:23:06,163 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 16:23:06,164 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i [2021-11-22 16:23:06,198 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/data/2199ad067/95a3dd57be064325af58367756fa7b9a/FLAGd4a1e0a39 [2021-11-22 16:23:06,245 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/data/2199ad067/95a3dd57be064325af58367756fa7b9a [2021-11-22 16:23:06,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 16:23:06,249 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 16:23:06,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 16:23:06,251 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 16:23:06,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 16:23:06,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:23:06" (1/1) ... [2021-11-22 16:23:06,269 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c5e2eec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:23:06, skipping insertion in model container [2021-11-22 16:23:06,269 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:23:06" (1/1) ... [2021-11-22 16:23:06,278 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 16:23:06,341 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 16:23:06,850 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_1e2c48c3-80d6-4ce0-a775-022619c6dac1/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i[33022,33035] [2021-11-22 16:23:07,187 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:23:07,201 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-22 16:23:07,220 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 16:23:07,242 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_1e2c48c3-80d6-4ce0-a775-022619c6dac1/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i[33022,33035] [2021-11-22 16:23:07,393 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:23:07,400 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 16:23:07,432 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_1e2c48c3-80d6-4ce0-a775-022619c6dac1/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i[33022,33035] [2021-11-22 16:23:07,561 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:23:07,623 INFO L208 MainTranslator]: Completed translation [2021-11-22 16:23:07,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:23:07 WrapperNode [2021-11-22 16:23:07,624 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 16:23:07,625 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 16:23:07,625 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 16:23:07,626 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 16:23:07,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:23:07" (1/1) ... [2021-11-22 16:23:07,719 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:23:07" (1/1) ... [2021-11-22 16:23:07,854 INFO L137 Inliner]: procedures = 180, calls = 524, calls flagged for inlining = 16, calls inlined = 28, statements flattened = 2354 [2021-11-22 16:23:07,855 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 16:23:07,855 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 16:23:07,856 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 16:23:07,856 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 16:23:07,866 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:23:07" (1/1) ... [2021-11-22 16:23:07,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:23:07" (1/1) ... [2021-11-22 16:23:07,914 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:23:07" (1/1) ... [2021-11-22 16:23:07,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:23:07" (1/1) ... [2021-11-22 16:23:08,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:23:07" (1/1) ... [2021-11-22 16:23:08,086 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:23:07" (1/1) ... [2021-11-22 16:23:08,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:23:07" (1/1) ... [2021-11-22 16:23:08,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 16:23:08,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 16:23:08,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 16:23:08,131 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 16:23:08,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:23:07" (1/1) ... [2021-11-22 16:23:08,142 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 16:23:08,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:23:08,167 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 16:23:08,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 16:23:08,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-22 16:23:08,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-22 16:23:08,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 16:23:08,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 16:23:08,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 16:23:08,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 16:23:08,226 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-22 16:23:08,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 16:23:08,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 16:23:08,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-22 16:23:08,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-22 16:23:08,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 16:23:08,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 16:23:08,682 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 16:23:08,684 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 16:23:19,930 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 16:23:19,975 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 16:23:19,976 INFO L301 CfgBuilder]: Removed 151 assume(true) statements. [2021-11-22 16:23:19,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:23:19 BoogieIcfgContainer [2021-11-22 16:23:19,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 16:23:19,985 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 16:23:19,986 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 16:23:19,989 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 16:23:19,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 04:23:06" (1/3) ... [2021-11-22 16:23:19,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65aa8948 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:23:19, skipping insertion in model container [2021-11-22 16:23:19,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:23:07" (2/3) ... [2021-11-22 16:23:19,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65aa8948 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:23:19, skipping insertion in model container [2021-11-22 16:23:19,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:23:19" (3/3) ... [2021-11-22 16:23:19,994 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test10-1.i [2021-11-22 16:23:20,003 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 16:23:20,004 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1005 error locations. [2021-11-22 16:23:20,067 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 16:23:20,075 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 [2021-11-22 16:23:20,075 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1005 error locations. [2021-11-22 16:23:20,149 INFO L276 IsEmpty]: Start isEmpty. Operand has 2139 states, 1133 states have (on average 2.171226831421006) internal successors, (2460), 2138 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:20,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-22 16:23:20,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:20,161 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-22 16:23:20,161 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1001 more)] === [2021-11-22 16:23:20,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:20,175 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-11-22 16:23:20,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:23:20,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1965484909] [2021-11-22 16:23:20,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:20,191 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:23:20,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:23:20,195 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:23:20,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-22 16:23:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:20,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-22 16:23:20,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:23:20,559 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 [2021-11-22 16:23:20,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:23:20,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:23:20,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:23:20,623 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:23:20,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1965484909] [2021-11-22 16:23:20,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1965484909] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:20,624 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:23:20,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-22 16:23:20,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007755155] [2021-11-22 16:23:20,628 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:20,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:23:20,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:23:20,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:23:20,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:23:20,674 INFO L87 Difference]: Start difference. First operand has 2139 states, 1133 states have (on average 2.171226831421006) internal successors, (2460), 2138 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 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) [2021-11-22 16:23:25,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:25,704 INFO L93 Difference]: Finished difference Result 2646 states and 2818 transitions. [2021-11-22 16:23:25,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:23:25,708 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 [2021-11-22 16:23:25,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:25,747 INFO L225 Difference]: With dead ends: 2646 [2021-11-22 16:23:25,748 INFO L226 Difference]: Without dead ends: 2644 [2021-11-22 16:23:25,750 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 [2021-11-22 16:23:25,759 INFO L933 BasicCegarLoop]: 1343 mSDtfsCounter, 2085 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2085 SdHoareTripleChecker+Valid, 1694 SdHoareTripleChecker+Invalid, 1305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:25,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2085 Valid, 1694 Invalid, 1305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1282 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-22 16:23:25,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2644 states. [2021-11-22 16:23:25,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2644 to 2287. [2021-11-22 16:23:25,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2287 states, 1305 states have (on average 2.0053639846743296) internal successors, (2617), 2286 states have internal predecessors, (2617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:25,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2287 states to 2287 states and 2617 transitions. [2021-11-22 16:23:25,951 INFO L78 Accepts]: Start accepts. Automaton has 2287 states and 2617 transitions. Word has length 3 [2021-11-22 16:23:25,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:25,952 INFO L470 AbstractCegarLoop]: Abstraction has 2287 states and 2617 transitions. [2021-11-22 16:23:25,953 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) [2021-11-22 16:23:25,953 INFO L276 IsEmpty]: Start isEmpty. Operand 2287 states and 2617 transitions. [2021-11-22 16:23:25,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-22 16:23:25,954 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:25,954 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-22 16:23:25,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-22 16:23:26,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:23:26,172 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1001 more)] === [2021-11-22 16:23:26,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:26,177 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-11-22 16:23:26,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:23:26,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2139303370] [2021-11-22 16:23:26,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:26,179 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:23:26,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:23:26,180 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:23:26,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-22 16:23:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:26,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 16:23:26,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:23:26,425 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 [2021-11-22 16:23:26,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:23:26,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:23:26,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:23:26,507 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:23:26,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2139303370] [2021-11-22 16:23:26,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2139303370] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:26,511 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:23:26,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-22 16:23:26,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531178462] [2021-11-22 16:23:26,514 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:26,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:23:26,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:23:26,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:23:26,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:23:26,521 INFO L87 Difference]: Start difference. First operand 2287 states and 2617 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) [2021-11-22 16:23:37,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:37,940 INFO L93 Difference]: Finished difference Result 3472 states and 3914 transitions. [2021-11-22 16:23:37,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:23:37,941 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 [2021-11-22 16:23:37,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:37,964 INFO L225 Difference]: With dead ends: 3472 [2021-11-22 16:23:37,964 INFO L226 Difference]: Without dead ends: 3472 [2021-11-22 16:23:37,964 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 [2021-11-22 16:23:37,966 INFO L933 BasicCegarLoop]: 1649 mSDtfsCounter, 2458 mSDsluCounter, 1796 mSDsCounter, 0 mSdLazyCounter, 2119 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2458 SdHoareTripleChecker+Valid, 3445 SdHoareTripleChecker+Invalid, 2142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:37,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2458 Valid, 3445 Invalid, 2142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2119 Invalid, 0 Unknown, 0 Unchecked, 11.3s Time] [2021-11-22 16:23:37,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3472 states. [2021-11-22 16:23:38,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3472 to 2451. [2021-11-22 16:23:38,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2451 states, 1481 states have (on average 1.9979743416610398) internal successors, (2959), 2450 states have internal predecessors, (2959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:38,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2451 states to 2451 states and 2959 transitions. [2021-11-22 16:23:38,043 INFO L78 Accepts]: Start accepts. Automaton has 2451 states and 2959 transitions. Word has length 3 [2021-11-22 16:23:38,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:38,043 INFO L470 AbstractCegarLoop]: Abstraction has 2451 states and 2959 transitions. [2021-11-22 16:23:38,044 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) [2021-11-22 16:23:38,044 INFO L276 IsEmpty]: Start isEmpty. Operand 2451 states and 2959 transitions. [2021-11-22 16:23:38,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-22 16:23:38,045 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:38,045 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:38,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-22 16:23:38,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:23:38,257 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1001 more)] === [2021-11-22 16:23:38,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:38,258 INFO L85 PathProgramCache]: Analyzing trace with hash 62249618, now seen corresponding path program 1 times [2021-11-22 16:23:38,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:23:38,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [397629775] [2021-11-22 16:23:38,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:38,260 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:23:38,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:23:38,261 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:23:38,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-22 16:23:38,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:38,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-22 16:23:38,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:23:38,485 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 [2021-11-22 16:23:38,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:23:38,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:23:38,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:23:38,545 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:23:38,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [397629775] [2021-11-22 16:23:38,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [397629775] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:38,548 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:23:38,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-22 16:23:38,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223705131] [2021-11-22 16:23:38,548 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:38,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:23:38,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:23:38,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:23:38,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:23:38,554 INFO L87 Difference]: Start difference. First operand 2451 states and 2959 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) [2021-11-22 16:23:42,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:42,825 INFO L93 Difference]: Finished difference Result 3273 states and 3793 transitions. [2021-11-22 16:23:42,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:23:42,825 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 [2021-11-22 16:23:42,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:42,844 INFO L225 Difference]: With dead ends: 3273 [2021-11-22 16:23:42,844 INFO L226 Difference]: Without dead ends: 3273 [2021-11-22 16:23:42,845 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 [2021-11-22 16:23:42,846 INFO L933 BasicCegarLoop]: 2119 mSDtfsCounter, 2121 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 1374 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2121 SdHoareTripleChecker+Valid, 2834 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:42,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2121 Valid, 2834 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1374 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-11-22 16:23:42,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3273 states. [2021-11-22 16:23:42,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3273 to 2360. [2021-11-22 16:23:42,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2360 states, 1481 states have (on average 1.9135719108710332) internal successors, (2834), 2359 states have internal predecessors, (2834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:42,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2360 states to 2360 states and 2834 transitions. [2021-11-22 16:23:42,912 INFO L78 Accepts]: Start accepts. Automaton has 2360 states and 2834 transitions. Word has length 8 [2021-11-22 16:23:42,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:42,913 INFO L470 AbstractCegarLoop]: Abstraction has 2360 states and 2834 transitions. [2021-11-22 16:23:42,913 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) [2021-11-22 16:23:42,913 INFO L276 IsEmpty]: Start isEmpty. Operand 2360 states and 2834 transitions. [2021-11-22 16:23:42,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-22 16:23:42,914 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:42,914 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:42,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-22 16:23:43,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:23:43,127 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1001 more)] === [2021-11-22 16:23:43,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:43,128 INFO L85 PathProgramCache]: Analyzing trace with hash 62249619, now seen corresponding path program 1 times [2021-11-22 16:23:43,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:23:43,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1510032004] [2021-11-22 16:23:43,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:43,129 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:23:43,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:23:43,130 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:23:43,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-22 16:23:43,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:43,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 16:23:43,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:23:43,329 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 [2021-11-22 16:23:43,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:23:43,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:23:43,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:23:43,487 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:23:43,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1510032004] [2021-11-22 16:23:43,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1510032004] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:43,487 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:23:43,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-22 16:23:43,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048684626] [2021-11-22 16:23:43,488 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:43,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:23:43,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:23:43,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:23:43,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:23:43,489 INFO L87 Difference]: Start difference. First operand 2360 states and 2834 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) [2021-11-22 16:23:54,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:54,111 INFO L93 Difference]: Finished difference Result 3404 states and 3825 transitions. [2021-11-22 16:23:54,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:23:54,112 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 [2021-11-22 16:23:54,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:54,131 INFO L225 Difference]: With dead ends: 3404 [2021-11-22 16:23:54,131 INFO L226 Difference]: Without dead ends: 3404 [2021-11-22 16:23:54,132 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 [2021-11-22 16:23:54,133 INFO L933 BasicCegarLoop]: 2460 mSDtfsCounter, 1557 mSDsluCounter, 2120 mSDsCounter, 0 mSdLazyCounter, 2373 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1557 SdHoareTripleChecker+Valid, 4580 SdHoareTripleChecker+Invalid, 2400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:54,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1557 Valid, 4580 Invalid, 2400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2373 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2021-11-22 16:23:54,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3404 states. [2021-11-22 16:23:54,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3404 to 2352. [2021-11-22 16:23:54,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2352 states, 1483 states have (on average 1.8975050573162509) internal successors, (2814), 2351 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:54,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2352 states to 2352 states and 2814 transitions. [2021-11-22 16:23:54,195 INFO L78 Accepts]: Start accepts. Automaton has 2352 states and 2814 transitions. Word has length 8 [2021-11-22 16:23:54,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:54,196 INFO L470 AbstractCegarLoop]: Abstraction has 2352 states and 2814 transitions. [2021-11-22 16:23:54,196 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) [2021-11-22 16:23:54,197 INFO L276 IsEmpty]: Start isEmpty. Operand 2352 states and 2814 transitions. [2021-11-22 16:23:54,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-22 16:23:54,197 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:54,198 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:54,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-22 16:23:54,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:23:54,408 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr658REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1001 more)] === [2021-11-22 16:23:54,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:54,409 INFO L85 PathProgramCache]: Analyzing trace with hash 175289392, now seen corresponding path program 1 times [2021-11-22 16:23:54,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:23:54,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [942742482] [2021-11-22 16:23:54,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:54,411 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:23:54,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:23:54,421 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:23:54,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-22 16:23:54,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:54,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-22 16:23:54,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:23:54,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:23:54,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:23:54,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:23:54,659 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:23:54,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [942742482] [2021-11-22 16:23:54,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [942742482] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:54,660 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:23:54,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-22 16:23:54,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804677659] [2021-11-22 16:23:54,660 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:54,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:23:54,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:23:54,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:23:54,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:23:54,661 INFO L87 Difference]: Start difference. First operand 2352 states and 2814 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) [2021-11-22 16:23:54,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:54,711 INFO L93 Difference]: Finished difference Result 2310 states and 2771 transitions. [2021-11-22 16:23:54,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:23:54,713 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 [2021-11-22 16:23:54,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:54,730 INFO L225 Difference]: With dead ends: 2310 [2021-11-22 16:23:54,730 INFO L226 Difference]: Without dead ends: 2310 [2021-11-22 16:23:54,730 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 [2021-11-22 16:23:54,732 INFO L933 BasicCegarLoop]: 2085 mSDtfsCounter, 1800 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1800 SdHoareTripleChecker+Valid, 3280 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:54,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1800 Valid, 3280 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:23:54,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2310 states. [2021-11-22 16:23:54,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2310 to 2310. [2021-11-22 16:23:54,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2310 states, 1465 states have (on average 1.8914675767918088) internal successors, (2771), 2309 states have internal predecessors, (2771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:54,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2310 states to 2310 states and 2771 transitions. [2021-11-22 16:23:54,818 INFO L78 Accepts]: Start accepts. Automaton has 2310 states and 2771 transitions. Word has length 11 [2021-11-22 16:23:54,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:54,819 INFO L470 AbstractCegarLoop]: Abstraction has 2310 states and 2771 transitions. [2021-11-22 16:23:54,819 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) [2021-11-22 16:23:54,819 INFO L276 IsEmpty]: Start isEmpty. Operand 2310 states and 2771 transitions. [2021-11-22 16:23:54,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-22 16:23:54,819 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:54,820 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:54,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-22 16:23:55,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:23:55,020 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr682REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1001 more)] === [2021-11-22 16:23:55,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:55,021 INFO L85 PathProgramCache]: Analyzing trace with hash 949435626, now seen corresponding path program 1 times [2021-11-22 16:23:55,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:23:55,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [100119666] [2021-11-22 16:23:55,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:55,022 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:23:55,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:23:55,025 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:23:55,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-22 16:23:55,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:55,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 16:23:55,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:23:55,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:23:55,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:23:55,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:23:55,284 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:23:55,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [100119666] [2021-11-22 16:23:55,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [100119666] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:55,285 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:23:55,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-22 16:23:55,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928117644] [2021-11-22 16:23:55,285 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:55,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:23:55,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:23:55,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:23:55,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:23:55,286 INFO L87 Difference]: Start difference. First operand 2310 states and 2771 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) [2021-11-22 16:23:55,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:55,411 INFO L93 Difference]: Finished difference Result 2289 states and 2743 transitions. [2021-11-22 16:23:55,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:23:55,412 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 [2021-11-22 16:23:55,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:55,425 INFO L225 Difference]: With dead ends: 2289 [2021-11-22 16:23:55,426 INFO L226 Difference]: Without dead ends: 2289 [2021-11-22 16:23:55,426 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 [2021-11-22 16:23:55,427 INFO L933 BasicCegarLoop]: 2040 mSDtfsCounter, 1732 mSDsluCounter, 3228 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1732 SdHoareTripleChecker+Valid, 5268 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:55,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1732 Valid, 5268 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:23:55,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2289 states. [2021-11-22 16:23:55,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2289 to 2288. [2021-11-22 16:23:55,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2288 states, 1457 states have (on average 1.881949210706932) internal successors, (2742), 2287 states have internal predecessors, (2742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:55,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2288 states to 2288 states and 2742 transitions. [2021-11-22 16:23:55,489 INFO L78 Accepts]: Start accepts. Automaton has 2288 states and 2742 transitions. Word has length 13 [2021-11-22 16:23:55,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:55,490 INFO L470 AbstractCegarLoop]: Abstraction has 2288 states and 2742 transitions. [2021-11-22 16:23:55,490 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) [2021-11-22 16:23:55,490 INFO L276 IsEmpty]: Start isEmpty. Operand 2288 states and 2742 transitions. [2021-11-22 16:23:55,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-22 16:23:55,491 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:55,491 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] [2021-11-22 16:23:55,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-22 16:23:55,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:23:55,705 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr334REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1001 more)] === [2021-11-22 16:23:55,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:55,705 INFO L85 PathProgramCache]: Analyzing trace with hash 270217471, now seen corresponding path program 1 times [2021-11-22 16:23:55,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:23:55,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1265505610] [2021-11-22 16:23:55,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:55,706 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:23:55,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:23:55,708 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:23:55,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-22 16:23:55,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:55,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-22 16:23:55,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:23:55,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:23:55,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:23:56,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:23:56,004 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:23:56,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1265505610] [2021-11-22 16:23:56,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1265505610] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:56,005 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:23:56,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-22 16:23:56,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777076471] [2021-11-22 16:23:56,007 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:56,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:23:56,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:23:56,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:23:56,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:23:56,014 INFO L87 Difference]: Start difference. First operand 2288 states and 2742 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) [2021-11-22 16:23:56,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:56,082 INFO L93 Difference]: Finished difference Result 3615 states and 4166 transitions. [2021-11-22 16:23:56,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:23:56,084 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 [2021-11-22 16:23:56,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:56,104 INFO L225 Difference]: With dead ends: 3615 [2021-11-22 16:23:56,105 INFO L226 Difference]: Without dead ends: 3615 [2021-11-22 16:23:56,105 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 [2021-11-22 16:23:56,106 INFO L933 BasicCegarLoop]: 3473 mSDtfsCounter, 4030 mSDsluCounter, 1467 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4030 SdHoareTripleChecker+Valid, 4940 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:56,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4030 Valid, 4940 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:23:56,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3615 states. [2021-11-22 16:23:56,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3615 to 2210. [2021-11-22 16:23:56,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2210 states, 1403 states have (on average 1.8624376336421953) internal successors, (2613), 2209 states have internal predecessors, (2613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:56,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2210 states to 2210 states and 2613 transitions. [2021-11-22 16:23:56,193 INFO L78 Accepts]: Start accepts. Automaton has 2210 states and 2613 transitions. Word has length 20 [2021-11-22 16:23:56,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:56,194 INFO L470 AbstractCegarLoop]: Abstraction has 2210 states and 2613 transitions. [2021-11-22 16:23:56,194 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) [2021-11-22 16:23:56,194 INFO L276 IsEmpty]: Start isEmpty. Operand 2210 states and 2613 transitions. [2021-11-22 16:23:56,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-22 16:23:56,196 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:56,196 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] [2021-11-22 16:23:56,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-22 16:23:56,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:23:56,414 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1001 more)] === [2021-11-22 16:23:56,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:56,416 INFO L85 PathProgramCache]: Analyzing trace with hash -673839521, now seen corresponding path program 1 times [2021-11-22 16:23:56,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:23:56,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1253044237] [2021-11-22 16:23:56,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:56,417 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:23:56,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:23:56,418 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:23:56,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-22 16:23:56,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:56,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-22 16:23:56,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:23:56,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:23:56,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:23:56,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:23:56,750 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:23:56,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1253044237] [2021-11-22 16:23:56,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1253044237] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:56,751 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:23:56,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-22 16:23:56,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121462130] [2021-11-22 16:23:56,756 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:56,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:23:56,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:23:56,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:23:56,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:23:56,758 INFO L87 Difference]: Start difference. First operand 2210 states and 2613 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) [2021-11-22 16:23:56,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:56,830 INFO L93 Difference]: Finished difference Result 3538 states and 4089 transitions. [2021-11-22 16:23:56,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:23:56,831 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 [2021-11-22 16:23:56,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:56,862 INFO L225 Difference]: With dead ends: 3538 [2021-11-22 16:23:56,862 INFO L226 Difference]: Without dead ends: 3538 [2021-11-22 16:23:56,863 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 [2021-11-22 16:23:56,864 INFO L933 BasicCegarLoop]: 3394 mSDtfsCounter, 3944 mSDsluCounter, 1431 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3944 SdHoareTripleChecker+Valid, 4825 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:56,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3944 Valid, 4825 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:23:56,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3538 states. [2021-11-22 16:23:56,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3538 to 2168. [2021-11-22 16:23:56,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2168 states, 1385 states have (on average 1.855595667870036) internal successors, (2570), 2167 states have internal predecessors, (2570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:56,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2168 states to 2168 states and 2570 transitions. [2021-11-22 16:23:56,943 INFO L78 Accepts]: Start accepts. Automaton has 2168 states and 2570 transitions. Word has length 20 [2021-11-22 16:23:56,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:56,943 INFO L470 AbstractCegarLoop]: Abstraction has 2168 states and 2570 transitions. [2021-11-22 16:23:56,944 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) [2021-11-22 16:23:56,944 INFO L276 IsEmpty]: Start isEmpty. Operand 2168 states and 2570 transitions. [2021-11-22 16:23:56,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-22 16:23:56,947 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:56,947 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] [2021-11-22 16:23:56,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-22 16:23:57,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:23:57,161 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr358REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1001 more)] === [2021-11-22 16:23:57,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:57,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1980977049, now seen corresponding path program 1 times [2021-11-22 16:23:57,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:23:57,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [248077089] [2021-11-22 16:23:57,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:57,163 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:23:57,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:23:57,164 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:23:57,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-22 16:23:57,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:57,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 16:23:57,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:23:57,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:23:57,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:23:57,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:23:57,460 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:23:57,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [248077089] [2021-11-22 16:23:57,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [248077089] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:57,460 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:23:57,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-22 16:23:57,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120280725] [2021-11-22 16:23:57,461 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:57,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:23:57,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:23:57,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:23:57,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:23:57,463 INFO L87 Difference]: Start difference. First operand 2168 states and 2570 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) [2021-11-22 16:23:57,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:57,582 INFO L93 Difference]: Finished difference Result 3496 states and 3996 transitions. [2021-11-22 16:23:57,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:23:57,582 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 [2021-11-22 16:23:57,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:57,593 INFO L225 Difference]: With dead ends: 3496 [2021-11-22 16:23:57,593 INFO L226 Difference]: Without dead ends: 3496 [2021-11-22 16:23:57,593 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 [2021-11-22 16:23:57,594 INFO L933 BasicCegarLoop]: 3342 mSDtfsCounter, 3876 mSDsluCounter, 4759 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3876 SdHoareTripleChecker+Valid, 8101 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:57,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3876 Valid, 8101 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:23:57,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3496 states. [2021-11-22 16:23:57,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3496 to 2130. [2021-11-22 16:23:57,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2130 states, 1361 states have (on average 1.8243938280675973) internal successors, (2483), 2129 states have internal predecessors, (2483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:57,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2130 states to 2130 states and 2483 transitions. [2021-11-22 16:23:57,657 INFO L78 Accepts]: Start accepts. Automaton has 2130 states and 2483 transitions. Word has length 22 [2021-11-22 16:23:57,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:57,657 INFO L470 AbstractCegarLoop]: Abstraction has 2130 states and 2483 transitions. [2021-11-22 16:23:57,658 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) [2021-11-22 16:23:57,658 INFO L276 IsEmpty]: Start isEmpty. Operand 2130 states and 2483 transitions. [2021-11-22 16:23:57,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-22 16:23:57,659 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:57,659 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] [2021-11-22 16:23:57,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-22 16:23:57,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:23:57,876 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1001 more)] === [2021-11-22 16:23:57,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:57,876 INFO L85 PathProgramCache]: Analyzing trace with hash 980278297, now seen corresponding path program 1 times [2021-11-22 16:23:57,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:23:57,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1144306867] [2021-11-22 16:23:57,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:57,877 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:23:57,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:23:57,878 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:23:57,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-22 16:23:58,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:58,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 16:23:58,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:23:58,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:23:58,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:23:58,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:23:58,188 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:23:58,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1144306867] [2021-11-22 16:23:58,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1144306867] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:58,189 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:23:58,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-22 16:23:58,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461101047] [2021-11-22 16:23:58,189 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:58,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:23:58,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:23:58,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:23:58,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:23:58,191 INFO L87 Difference]: Start difference. First operand 2130 states and 2483 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) [2021-11-22 16:23:58,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:58,293 INFO L93 Difference]: Finished difference Result 3457 states and 3945 transitions. [2021-11-22 16:23:58,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:23:58,294 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 [2021-11-22 16:23:58,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:58,307 INFO L225 Difference]: With dead ends: 3457 [2021-11-22 16:23:58,307 INFO L226 Difference]: Without dead ends: 3457 [2021-11-22 16:23:58,308 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 [2021-11-22 16:23:58,309 INFO L933 BasicCegarLoop]: 3279 mSDtfsCounter, 1908 mSDsluCounter, 6064 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1908 SdHoareTripleChecker+Valid, 9343 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 [2021-11-22 16:23:58,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1908 Valid, 9343 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:23:58,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3457 states. [2021-11-22 16:23:58,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3457 to 2108. [2021-11-22 16:23:58,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2108 states, 1353 states have (on average 1.8137472283813747) internal successors, (2454), 2107 states have internal predecessors, (2454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:58,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 2454 transitions. [2021-11-22 16:23:58,369 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 2454 transitions. Word has length 22 [2021-11-22 16:23:58,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:58,369 INFO L470 AbstractCegarLoop]: Abstraction has 2108 states and 2454 transitions. [2021-11-22 16:23:58,370 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) [2021-11-22 16:23:58,370 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 2454 transitions. [2021-11-22 16:23:58,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-22 16:23:58,371 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:58,371 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] [2021-11-22 16:23:58,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-22 16:23:58,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:23:58,588 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr696REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1001 more)] === [2021-11-22 16:23:58,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:58,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1893283832, now seen corresponding path program 1 times [2021-11-22 16:23:58,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:23:58,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1415545643] [2021-11-22 16:23:58,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:58,590 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:23:58,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:23:58,592 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:23:58,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-22 16:23:58,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:58,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 16:23:58,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:23:58,795 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 [2021-11-22 16:23:58,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:23:58,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:23:59,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:23:59,023 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:23:59,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1415545643] [2021-11-22 16:23:59,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1415545643] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:59,024 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:23:59,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-22 16:23:59,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652629944] [2021-11-22 16:23:59,024 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:59,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:23:59,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:23:59,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:23:59,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:23:59,026 INFO L87 Difference]: Start difference. First operand 2108 states and 2454 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) [2021-11-22 16:24:02,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:24:02,955 INFO L93 Difference]: Finished difference Result 2386 states and 2634 transitions. [2021-11-22 16:24:02,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:24:02,956 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 [2021-11-22 16:24:02,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:24:02,963 INFO L225 Difference]: With dead ends: 2386 [2021-11-22 16:24:02,963 INFO L226 Difference]: Without dead ends: 2386 [2021-11-22 16:24:02,964 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 [2021-11-22 16:24:02,964 INFO L933 BasicCegarLoop]: 1192 mSDtfsCounter, 2585 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 1483 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2585 SdHoareTripleChecker+Valid, 2050 SdHoareTripleChecker+Invalid, 1496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-22 16:24:02,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2585 Valid, 2050 Invalid, 1496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1483 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-22 16:24:02,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2386 states. [2021-11-22 16:24:03,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2386 to 2104. [2021-11-22 16:24:03,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2104 states, 1353 states have (on average 1.810790835181079) internal successors, (2450), 2103 states have internal predecessors, (2450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:24:03,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2104 states to 2104 states and 2450 transitions. [2021-11-22 16:24:03,016 INFO L78 Accepts]: Start accepts. Automaton has 2104 states and 2450 transitions. Word has length 27 [2021-11-22 16:24:03,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:24:03,016 INFO L470 AbstractCegarLoop]: Abstraction has 2104 states and 2450 transitions. [2021-11-22 16:24:03,016 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) [2021-11-22 16:24:03,017 INFO L276 IsEmpty]: Start isEmpty. Operand 2104 states and 2450 transitions. [2021-11-22 16:24:03,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-22 16:24:03,018 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:24:03,018 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] [2021-11-22 16:24:03,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-22 16:24:03,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:24:03,231 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr697REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1001 more)] === [2021-11-22 16:24:03,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:24:03,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1893283833, now seen corresponding path program 1 times [2021-11-22 16:24:03,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:24:03,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2070059439] [2021-11-22 16:24:03,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:24:03,232 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:24:03,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:24:03,233 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:24:03,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-22 16:24:03,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:24:03,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 16:24:03,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:24:03,433 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 [2021-11-22 16:24:03,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:24:03,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:24:04,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:24:04,208 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:24:04,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2070059439] [2021-11-22 16:24:04,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2070059439] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:24:04,208 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:24:04,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-22 16:24:04,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086919197] [2021-11-22 16:24:04,209 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:24:04,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 16:24:04,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:24:04,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 16:24:04,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-22 16:24:04,211 INFO L87 Difference]: Start difference. First operand 2104 states and 2450 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) [2021-11-22 16:24:18,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:24:18,208 INFO L93 Difference]: Finished difference Result 2986 states and 3319 transitions. [2021-11-22 16:24:18,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 16:24:18,210 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 [2021-11-22 16:24:18,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:24:18,214 INFO L225 Difference]: With dead ends: 2986 [2021-11-22 16:24:18,215 INFO L226 Difference]: Without dead ends: 2986 [2021-11-22 16:24:18,215 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 [2021-11-22 16:24:18,216 INFO L933 BasicCegarLoop]: 1448 mSDtfsCounter, 3755 mSDsluCounter, 2990 mSDsCounter, 0 mSdLazyCounter, 3228 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3755 SdHoareTripleChecker+Valid, 4438 SdHoareTripleChecker+Invalid, 3236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 3228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2021-11-22 16:24:18,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3755 Valid, 4438 Invalid, 3236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 3228 Invalid, 0 Unknown, 0 Unchecked, 13.8s Time] [2021-11-22 16:24:18,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2986 states. [2021-11-22 16:24:18,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2986 to 2137. [2021-11-22 16:24:18,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2137 states, 1387 states have (on average 1.7930785868781542) internal successors, (2487), 2136 states have internal predecessors, (2487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:24:18,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2137 states to 2137 states and 2487 transitions. [2021-11-22 16:24:18,263 INFO L78 Accepts]: Start accepts. Automaton has 2137 states and 2487 transitions. Word has length 27 [2021-11-22 16:24:18,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:24:18,264 INFO L470 AbstractCegarLoop]: Abstraction has 2137 states and 2487 transitions. [2021-11-22 16:24:18,264 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) [2021-11-22 16:24:18,265 INFO L276 IsEmpty]: Start isEmpty. Operand 2137 states and 2487 transitions. [2021-11-22 16:24:18,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-22 16:24:18,266 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:24:18,266 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] [2021-11-22 16:24:18,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-22 16:24:18,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:24:18,480 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr372REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1001 more)] === [2021-11-22 16:24:18,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:24:18,480 INFO L85 PathProgramCache]: Analyzing trace with hash 187122631, now seen corresponding path program 1 times [2021-11-22 16:24:18,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:24:18,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [257689763] [2021-11-22 16:24:18,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:24:18,481 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:24:18,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:24:18,481 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:24:18,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-22 16:24:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:24:18,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 16:24:18,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:24:18,702 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 [2021-11-22 16:24:18,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:24:18,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:24:18,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:24:18,947 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:24:18,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [257689763] [2021-11-22 16:24:18,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [257689763] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:24:18,947 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:24:18,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-22 16:24:18,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995614392] [2021-11-22 16:24:18,948 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:24:18,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:24:18,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:24:18,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:24:18,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:24:18,950 INFO L87 Difference]: Start difference. First operand 2137 states and 2487 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) [2021-11-22 16:24:25,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:24:25,806 INFO L93 Difference]: Finished difference Result 4596 states and 5171 transitions. [2021-11-22 16:24:25,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 16:24:25,807 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 [2021-11-22 16:24:25,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:24:25,816 INFO L225 Difference]: With dead ends: 4596 [2021-11-22 16:24:25,816 INFO L226 Difference]: Without dead ends: 4596 [2021-11-22 16:24:25,817 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 [2021-11-22 16:24:25,817 INFO L933 BasicCegarLoop]: 2116 mSDtfsCounter, 4865 mSDsluCounter, 2257 mSDsCounter, 0 mSdLazyCounter, 2558 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4865 SdHoareTripleChecker+Valid, 4373 SdHoareTripleChecker+Invalid, 2589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-11-22 16:24:25,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4865 Valid, 4373 Invalid, 2589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2558 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2021-11-22 16:24:25,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4596 states. [2021-11-22 16:24:25,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4596 to 2134. [2021-11-22 16:24:25,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2134 states, 1387 states have (on average 1.7851478010093726) internal successors, (2476), 2133 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:24:25,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2134 states to 2134 states and 2476 transitions. [2021-11-22 16:24:25,866 INFO L78 Accepts]: Start accepts. Automaton has 2134 states and 2476 transitions. Word has length 36 [2021-11-22 16:24:25,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:24:25,866 INFO L470 AbstractCegarLoop]: Abstraction has 2134 states and 2476 transitions. [2021-11-22 16:24:25,867 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) [2021-11-22 16:24:25,867 INFO L276 IsEmpty]: Start isEmpty. Operand 2134 states and 2476 transitions. [2021-11-22 16:24:25,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-22 16:24:25,868 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:24:25,868 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] [2021-11-22 16:24:25,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-22 16:24:26,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:24:26,081 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr373REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1001 more)] === [2021-11-22 16:24:26,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:24:26,082 INFO L85 PathProgramCache]: Analyzing trace with hash 187122632, now seen corresponding path program 1 times [2021-11-22 16:24:26,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:24:26,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816515005] [2021-11-22 16:24:26,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:24:26,084 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:24:26,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:24:26,085 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:24:26,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-22 16:24:26,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:24:26,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 16:24:26,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:24:26,307 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 [2021-11-22 16:24:26,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:24:26,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:24:27,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:24:27,136 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:24:27,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816515005] [2021-11-22 16:24:27,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816515005] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:24:27,136 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:24:27,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-22 16:24:27,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77907910] [2021-11-22 16:24:27,137 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:24:27,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 16:24:27,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:24:27,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 16:24:27,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-22 16:24:27,138 INFO L87 Difference]: Start difference. First operand 2134 states and 2476 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) [2021-11-22 16:24:46,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:24:46,715 INFO L93 Difference]: Finished difference Result 4314 states and 4817 transitions. [2021-11-22 16:24:46,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 16:24:46,716 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 [2021-11-22 16:24:46,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:24:46,726 INFO L225 Difference]: With dead ends: 4314 [2021-11-22 16:24:46,726 INFO L226 Difference]: Without dead ends: 4314 [2021-11-22 16:24:46,726 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 [2021-11-22 16:24:46,727 INFO L933 BasicCegarLoop]: 2371 mSDtfsCounter, 6031 mSDsluCounter, 3395 mSDsCounter, 0 mSdLazyCounter, 3177 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6031 SdHoareTripleChecker+Valid, 5766 SdHoareTripleChecker+Invalid, 3191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.4s IncrementalHoareTripleChecker+Time [2021-11-22 16:24:46,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6031 Valid, 5766 Invalid, 3191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 3177 Invalid, 0 Unknown, 0 Unchecked, 19.4s Time] [2021-11-22 16:24:46,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4314 states. [2021-11-22 16:24:46,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4314 to 2134. [2021-11-22 16:24:46,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2134 states, 1387 states have (on average 1.7822638788752703) internal successors, (2472), 2133 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:24:46,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2134 states to 2134 states and 2472 transitions. [2021-11-22 16:24:46,774 INFO L78 Accepts]: Start accepts. Automaton has 2134 states and 2472 transitions. Word has length 36 [2021-11-22 16:24:46,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:24:46,774 INFO L470 AbstractCegarLoop]: Abstraction has 2134 states and 2472 transitions. [2021-11-22 16:24:46,775 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) [2021-11-22 16:24:46,775 INFO L276 IsEmpty]: Start isEmpty. Operand 2134 states and 2472 transitions. [2021-11-22 16:24:46,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-22 16:24:46,776 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:24:46,776 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] [2021-11-22 16:24:46,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-22 16:24:46,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:24:46,989 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1001 more)] === [2021-11-22 16:24:46,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:24:46,990 INFO L85 PathProgramCache]: Analyzing trace with hash -773066201, now seen corresponding path program 1 times [2021-11-22 16:24:46,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:24:46,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [115534028] [2021-11-22 16:24:46,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:24:46,991 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:24:46,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:24:46,992 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:24:46,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-22 16:24:47,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:24:47,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 16:24:47,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:24:47,234 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 [2021-11-22 16:24:47,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:24:47,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:24:47,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:24:47,466 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:24:47,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [115534028] [2021-11-22 16:24:47,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [115534028] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:24:47,467 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:24:47,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-22 16:24:47,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812422156] [2021-11-22 16:24:47,467 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:24:47,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:24:47,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:24:47,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:24:47,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:24:47,469 INFO L87 Difference]: Start difference. First operand 2134 states and 2472 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) [2021-11-22 16:24:53,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:24:53,779 INFO L93 Difference]: Finished difference Result 4200 states and 4751 transitions. [2021-11-22 16:24:53,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:24:53,780 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 [2021-11-22 16:24:53,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:24:53,789 INFO L225 Difference]: With dead ends: 4200 [2021-11-22 16:24:53,789 INFO L226 Difference]: Without dead ends: 4200 [2021-11-22 16:24:53,790 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 [2021-11-22 16:24:53,791 INFO L933 BasicCegarLoop]: 2695 mSDtfsCounter, 3582 mSDsluCounter, 2055 mSDsCounter, 0 mSdLazyCounter, 2603 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3582 SdHoareTripleChecker+Valid, 4750 SdHoareTripleChecker+Invalid, 2626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-22 16:24:53,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3582 Valid, 4750 Invalid, 2626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2603 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2021-11-22 16:24:53,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4200 states. [2021-11-22 16:24:53,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4200 to 2130. [2021-11-22 16:24:53,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2130 states, 1387 states have (on average 1.779379956741168) internal successors, (2468), 2129 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:24:53,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2130 states to 2130 states and 2468 transitions. [2021-11-22 16:24:53,838 INFO L78 Accepts]: Start accepts. Automaton has 2130 states and 2468 transitions. Word has length 36 [2021-11-22 16:24:53,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:24:53,839 INFO L470 AbstractCegarLoop]: Abstraction has 2130 states and 2468 transitions. [2021-11-22 16:24:53,839 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) [2021-11-22 16:24:53,839 INFO L276 IsEmpty]: Start isEmpty. Operand 2130 states and 2468 transitions. [2021-11-22 16:24:53,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-22 16:24:53,840 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:24:53,840 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] [2021-11-22 16:24:53,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-22 16:24:54,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:24:54,054 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1001 more)] === [2021-11-22 16:24:54,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:24:54,055 INFO L85 PathProgramCache]: Analyzing trace with hash -773066200, now seen corresponding path program 1 times [2021-11-22 16:24:54,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:24:54,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [279608869] [2021-11-22 16:24:54,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:24:54,056 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:24:54,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:24:54,057 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:24:54,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-22 16:24:54,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:24:54,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 16:24:54,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:24:54,284 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 [2021-11-22 16:24:54,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:24:54,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:24:55,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:24:55,097 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:24:55,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [279608869] [2021-11-22 16:24:55,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [279608869] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:24:55,097 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:24:55,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-22 16:24:55,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566884032] [2021-11-22 16:24:55,098 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:24:55,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 16:24:55,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:24:55,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 16:24:55,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-22 16:24:55,099 INFO L87 Difference]: Start difference. First operand 2130 states and 2468 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) [2021-11-22 16:25:12,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:25:12,715 INFO L93 Difference]: Finished difference Result 4082 states and 4511 transitions. [2021-11-22 16:25:12,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 16:25:12,716 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 [2021-11-22 16:25:12,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:25:12,721 INFO L225 Difference]: With dead ends: 4082 [2021-11-22 16:25:12,721 INFO L226 Difference]: Without dead ends: 4082 [2021-11-22 16:25:12,722 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 [2021-11-22 16:25:12,722 INFO L933 BasicCegarLoop]: 2944 mSDtfsCounter, 2578 mSDsluCounter, 5104 mSDsCounter, 0 mSdLazyCounter, 4741 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2578 SdHoareTripleChecker+Valid, 8048 SdHoareTripleChecker+Invalid, 4753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 4741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.4s IncrementalHoareTripleChecker+Time [2021-11-22 16:25:12,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2578 Valid, 8048 Invalid, 4753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 4741 Invalid, 0 Unknown, 0 Unchecked, 17.4s Time] [2021-11-22 16:25:12,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4082 states. [2021-11-22 16:25:12,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4082 to 2126. [2021-11-22 16:25:12,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2126 states, 1387 states have (on average 1.7764960346070655) internal successors, (2464), 2125 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:25:12,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2126 states to 2126 states and 2464 transitions. [2021-11-22 16:25:12,768 INFO L78 Accepts]: Start accepts. Automaton has 2126 states and 2464 transitions. Word has length 36 [2021-11-22 16:25:12,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:25:12,768 INFO L470 AbstractCegarLoop]: Abstraction has 2126 states and 2464 transitions. [2021-11-22 16:25:12,768 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) [2021-11-22 16:25:12,768 INFO L276 IsEmpty]: Start isEmpty. Operand 2126 states and 2464 transitions. [2021-11-22 16:25:12,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-22 16:25:12,769 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:25:12,769 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] [2021-11-22 16:25:12,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-22 16:25:12,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:25:12,994 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr704REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1001 more)] === [2021-11-22 16:25:12,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:25:12,994 INFO L85 PathProgramCache]: Analyzing trace with hash -480226171, now seen corresponding path program 1 times [2021-11-22 16:25:12,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:25:12,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [554840567] [2021-11-22 16:25:12,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:25:12,995 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:25:12,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:25:12,999 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:25:13,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-22 16:25:13,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:25:13,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 16:25:13,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:25:13,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:25:13,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:25:13,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:25:13,350 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:25:13,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [554840567] [2021-11-22 16:25:13,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [554840567] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:25:13,350 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:25:13,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-22 16:25:13,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091710697] [2021-11-22 16:25:13,351 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:25:13,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:25:13,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:25:13,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:25:13,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:25:13,352 INFO L87 Difference]: Start difference. First operand 2126 states and 2464 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) [2021-11-22 16:25:13,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:25:13,407 INFO L93 Difference]: Finished difference Result 2120 states and 2450 transitions. [2021-11-22 16:25:13,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:25:13,407 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 [2021-11-22 16:25:13,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:25:13,409 INFO L225 Difference]: With dead ends: 2120 [2021-11-22 16:25:13,409 INFO L226 Difference]: Without dead ends: 2120 [2021-11-22 16:25:13,410 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 [2021-11-22 16:25:13,410 INFO L933 BasicCegarLoop]: 1870 mSDtfsCounter, 853 mSDsluCounter, 2878 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 4748 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 [2021-11-22 16:25:13,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [853 Valid, 4748 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:25:13,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2120 states. [2021-11-22 16:25:13,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2120 to 2120. [2021-11-22 16:25:13,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2120 states, 1381 states have (on average 1.7740767559739319) internal successors, (2450), 2119 states have internal predecessors, (2450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:25:13,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2120 states to 2120 states and 2450 transitions. [2021-11-22 16:25:13,441 INFO L78 Accepts]: Start accepts. Automaton has 2120 states and 2450 transitions. Word has length 40 [2021-11-22 16:25:13,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:25:13,441 INFO L470 AbstractCegarLoop]: Abstraction has 2120 states and 2450 transitions. [2021-11-22 16:25:13,441 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) [2021-11-22 16:25:13,441 INFO L276 IsEmpty]: Start isEmpty. Operand 2120 states and 2450 transitions. [2021-11-22 16:25:13,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-22 16:25:13,442 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:25:13,442 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] [2021-11-22 16:25:13,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-22 16:25:13,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:25:13,654 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr704REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1001 more)] === [2021-11-22 16:25:13,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:25:13,655 INFO L85 PathProgramCache]: Analyzing trace with hash -952585927, now seen corresponding path program 1 times [2021-11-22 16:25:13,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:25:13,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1373123380] [2021-11-22 16:25:13,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:25:13,656 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:25:13,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:25:13,657 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:25:13,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-22 16:25:13,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:25:13,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 16:25:13,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:25:14,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:25:14,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:25:14,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:25:14,475 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:25:14,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1373123380] [2021-11-22 16:25:14,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1373123380] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:25:14,476 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:25:14,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-22 16:25:14,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590492197] [2021-11-22 16:25:14,476 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:25:14,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:25:14,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:25:14,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:25:14,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:25:14,478 INFO L87 Difference]: Start difference. First operand 2120 states and 2450 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) [2021-11-22 16:25:14,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:25:14,642 INFO L93 Difference]: Finished difference Result 3359 states and 3817 transitions. [2021-11-22 16:25:14,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:25:14,643 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 [2021-11-22 16:25:14,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:25:14,646 INFO L225 Difference]: With dead ends: 3359 [2021-11-22 16:25:14,646 INFO L226 Difference]: Without dead ends: 3359 [2021-11-22 16:25:14,646 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 [2021-11-22 16:25:14,647 INFO L933 BasicCegarLoop]: 1883 mSDtfsCounter, 1305 mSDsluCounter, 1747 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 3630 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:25:14,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1305 Valid, 3630 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:25:14,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3359 states. [2021-11-22 16:25:14,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3359 to 2756. [2021-11-22 16:25:14,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2756 states, 2017 states have (on average 1.7560733763014378) internal successors, (3542), 2755 states have internal predecessors, (3542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:25:14,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2756 states to 2756 states and 3542 transitions. [2021-11-22 16:25:14,690 INFO L78 Accepts]: Start accepts. Automaton has 2756 states and 3542 transitions. Word has length 48 [2021-11-22 16:25:14,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:25:14,690 INFO L470 AbstractCegarLoop]: Abstraction has 2756 states and 3542 transitions. [2021-11-22 16:25:14,691 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) [2021-11-22 16:25:14,691 INFO L276 IsEmpty]: Start isEmpty. Operand 2756 states and 3542 transitions. [2021-11-22 16:25:14,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-22 16:25:14,692 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:25:14,692 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] [2021-11-22 16:25:14,709 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-11-22 16:25:14,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:25:14,909 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr437REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1001 more)] === [2021-11-22 16:25:14,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:25:14,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1775606781, now seen corresponding path program 1 times [2021-11-22 16:25:14,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:25:14,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [144010017] [2021-11-22 16:25:14,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:25:14,910 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:25:14,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:25:14,911 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:25:14,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-22 16:25:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:25:15,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 16:25:15,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:25:15,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:25:15,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:25:15,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:25:15,368 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:25:15,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [144010017] [2021-11-22 16:25:15,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [144010017] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:25:15,368 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:25:15,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-22 16:25:15,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977619646] [2021-11-22 16:25:15,369 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:25:15,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:25:15,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:25:15,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:25:15,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:25:15,370 INFO L87 Difference]: Start difference. First operand 2756 states and 3542 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) [2021-11-22 16:25:15,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:25:15,443 INFO L93 Difference]: Finished difference Result 3804 states and 4658 transitions. [2021-11-22 16:25:15,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:25:15,444 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 [2021-11-22 16:25:15,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:25:15,449 INFO L225 Difference]: With dead ends: 3804 [2021-11-22 16:25:15,449 INFO L226 Difference]: Without dead ends: 3804 [2021-11-22 16:25:15,450 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 [2021-11-22 16:25:15,451 INFO L933 BasicCegarLoop]: 3045 mSDtfsCounter, 1877 mSDsluCounter, 4203 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1877 SdHoareTripleChecker+Valid, 7248 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 [2021-11-22 16:25:15,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1877 Valid, 7248 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:25:15,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3804 states. [2021-11-22 16:25:15,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3804 to 2732. [2021-11-22 16:25:15,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2732 states, 1993 states have (on average 1.7571500250878074) internal successors, (3502), 2731 states have internal predecessors, (3502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:25:15,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2732 states to 2732 states and 3502 transitions. [2021-11-22 16:25:15,494 INFO L78 Accepts]: Start accepts. Automaton has 2732 states and 3502 transitions. Word has length 51 [2021-11-22 16:25:15,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:25:15,494 INFO L470 AbstractCegarLoop]: Abstraction has 2732 states and 3502 transitions. [2021-11-22 16:25:15,494 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) [2021-11-22 16:25:15,495 INFO L276 IsEmpty]: Start isEmpty. Operand 2732 states and 3502 transitions. [2021-11-22 16:25:15,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-22 16:25:15,495 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:25:15,496 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] [2021-11-22 16:25:15,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-22 16:25:15,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:25:15,709 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1001 more)] === [2021-11-22 16:25:15,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:25:15,709 INFO L85 PathProgramCache]: Analyzing trace with hash 732181606, now seen corresponding path program 1 times [2021-11-22 16:25:15,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:25:15,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [638432881] [2021-11-22 16:25:15,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:25:15,710 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:25:15,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:25:15,711 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:25:15,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-22 16:25:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:25:15,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 16:25:16,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:25:16,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:25:16,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:25:16,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:25:16,235 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:25:16,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [638432881] [2021-11-22 16:25:16,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [638432881] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:25:16,235 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:25:16,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-22 16:25:16,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233469684] [2021-11-22 16:25:16,235 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:25:16,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:25:16,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:25:16,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:25:16,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:25:16,237 INFO L87 Difference]: Start difference. First operand 2732 states and 3502 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) [2021-11-22 16:25:16,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:25:16,312 INFO L93 Difference]: Finished difference Result 3540 states and 4147 transitions. [2021-11-22 16:25:16,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:25:16,313 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 [2021-11-22 16:25:16,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:25:16,318 INFO L225 Difference]: With dead ends: 3540 [2021-11-22 16:25:16,318 INFO L226 Difference]: Without dead ends: 3540 [2021-11-22 16:25:16,318 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 [2021-11-22 16:25:16,319 INFO L933 BasicCegarLoop]: 3086 mSDtfsCounter, 1868 mSDsluCounter, 4294 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1868 SdHoareTripleChecker+Valid, 7380 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 [2021-11-22 16:25:16,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1868 Valid, 7380 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:25:16,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3540 states. [2021-11-22 16:25:16,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3540 to 2720. [2021-11-22 16:25:16,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2720 states, 1981 states have (on average 1.7576981322564362) internal successors, (3482), 2719 states have internal predecessors, (3482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:25:16,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2720 states to 2720 states and 3482 transitions. [2021-11-22 16:25:16,384 INFO L78 Accepts]: Start accepts. Automaton has 2720 states and 3482 transitions. Word has length 54 [2021-11-22 16:25:16,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:25:16,384 INFO L470 AbstractCegarLoop]: Abstraction has 2720 states and 3482 transitions. [2021-11-22 16:25:16,384 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) [2021-11-22 16:25:16,385 INFO L276 IsEmpty]: Start isEmpty. Operand 2720 states and 3482 transitions. [2021-11-22 16:25:16,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-22 16:25:16,385 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:25:16,386 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] [2021-11-22 16:25:16,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-22 16:25:16,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:25:16,599 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr740ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1001 more)] === [2021-11-22 16:25:16,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:25:16,599 INFO L85 PathProgramCache]: Analyzing trace with hash -993308447, now seen corresponding path program 1 times [2021-11-22 16:25:16,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:25:16,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [993253428] [2021-11-22 16:25:16,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:25:16,600 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:25:16,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:25:16,601 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:25:16,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-22 16:25:16,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:25:16,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 16:25:16,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:25:16,830 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 16:25:16,831 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 16:25:16,835 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 16:25:16,890 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-22 16:25:16,890 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 [2021-11-22 16:25:16,951 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-22 16:25:16,951 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 [2021-11-22 16:25:17,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:25:17,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:25:17,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:25:17,165 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:25:17,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [993253428] [2021-11-22 16:25:17,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [993253428] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:25:17,165 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:25:17,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-22 16:25:17,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955231836] [2021-11-22 16:25:17,165 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:25:17,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 16:25:17,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:25:17,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 16:25:17,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-22 16:25:17,168 INFO L87 Difference]: Start difference. First operand 2720 states and 3482 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:25:20,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:25:20,113 INFO L93 Difference]: Finished difference Result 2687 states and 3448 transitions. [2021-11-22 16:25:20,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 16:25:20,114 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-22 16:25:20,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:25:20,116 INFO L225 Difference]: With dead ends: 2687 [2021-11-22 16:25:20,117 INFO L226 Difference]: Without dead ends: 2687 [2021-11-22 16:25:20,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 16:25:20,118 INFO L933 BasicCegarLoop]: 1771 mSDtfsCounter, 859 mSDsluCounter, 4236 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 6007 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-22 16:25:20,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [859 Valid, 6007 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-22 16:25:20,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2687 states. [2021-11-22 16:25:20,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2687 to 2686. [2021-11-22 16:25:20,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2686 states, 1947 states have (on average 1.7704160246533127) internal successors, (3447), 2685 states have internal predecessors, (3447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:25:20,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2686 states to 2686 states and 3447 transitions. [2021-11-22 16:25:20,157 INFO L78 Accepts]: Start accepts. Automaton has 2686 states and 3447 transitions. Word has length 54 [2021-11-22 16:25:20,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:25:20,157 INFO L470 AbstractCegarLoop]: Abstraction has 2686 states and 3447 transitions. [2021-11-22 16:25:20,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:25:20,158 INFO L276 IsEmpty]: Start isEmpty. Operand 2686 states and 3447 transitions. [2021-11-22 16:25:20,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-22 16:25:20,159 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:25:20,159 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] [2021-11-22 16:25:20,187 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-11-22 16:25:20,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:25:20,374 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr437REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1001 more)] === [2021-11-22 16:25:20,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:25:20,375 INFO L85 PathProgramCache]: Analyzing trace with hash -637866953, now seen corresponding path program 1 times [2021-11-22 16:25:20,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:25:20,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [523034958] [2021-11-22 16:25:20,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:25:20,375 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:25:20,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:25:20,376 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:25:20,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-22 16:25:20,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:25:20,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 16:25:20,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:25:21,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:25:21,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:25:21,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:25:21,388 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:25:21,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [523034958] [2021-11-22 16:25:21,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [523034958] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:25:21,389 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:25:21,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-22 16:25:21,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201374921] [2021-11-22 16:25:21,389 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:25:21,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:25:21,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:25:21,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:25:21,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:25:21,390 INFO L87 Difference]: Start difference. First operand 2686 states and 3447 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) [2021-11-22 16:25:21,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:25:21,566 INFO L93 Difference]: Finished difference Result 3752 states and 4643 transitions. [2021-11-22 16:25:21,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:25:21,567 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 [2021-11-22 16:25:21,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:25:21,571 INFO L225 Difference]: With dead ends: 3752 [2021-11-22 16:25:21,571 INFO L226 Difference]: Without dead ends: 3752 [2021-11-22 16:25:21,571 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 [2021-11-22 16:25:21,572 INFO L933 BasicCegarLoop]: 1876 mSDtfsCounter, 969 mSDsluCounter, 1737 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 3613 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:25:21,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [969 Valid, 3613 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:25:21,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3752 states. [2021-11-22 16:25:21,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3752 to 3379. [2021-11-22 16:25:21,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3379 states, 2640 states have (on average 1.743939393939394) internal successors, (4604), 3378 states have internal predecessors, (4604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:25:21,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3379 states to 3379 states and 4604 transitions. [2021-11-22 16:25:21,613 INFO L78 Accepts]: Start accepts. Automaton has 3379 states and 4604 transitions. Word has length 59 [2021-11-22 16:25:21,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:25:21,613 INFO L470 AbstractCegarLoop]: Abstraction has 3379 states and 4604 transitions. [2021-11-22 16:25:21,613 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) [2021-11-22 16:25:21,614 INFO L276 IsEmpty]: Start isEmpty. Operand 3379 states and 4604 transitions. [2021-11-22 16:25:21,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-22 16:25:21,614 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:25:21,615 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] [2021-11-22 16:25:21,637 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-11-22 16:25:21,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:25:21,838 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr391REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1001 more)] === [2021-11-22 16:25:21,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:25:21,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1882812110, now seen corresponding path program 1 times [2021-11-22 16:25:21,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:25:21,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [928314216] [2021-11-22 16:25:21,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:25:21,839 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:25:21,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:25:21,840 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:25:21,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-22 16:25:22,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:25:22,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-22 16:25:22,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:25:22,227 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 [2021-11-22 16:25:22,232 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 [2021-11-22 16:25:22,980 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 16:25:22,981 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 [2021-11-22 16:25:22,994 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-22 16:25:22,994 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 [2021-11-22 16:25:23,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:25:23,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:25:28,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:25:28,191 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:25:28,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [928314216] [2021-11-22 16:25:28,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [928314216] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:25:28,192 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:25:28,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-22 16:25:28,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633081331] [2021-11-22 16:25:28,192 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:25:28,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 16:25:28,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:25:28,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 16:25:28,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-22 16:25:28,194 INFO L87 Difference]: Start difference. First operand 3379 states and 4604 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) [2021-11-22 16:25:37,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:25:37,302 INFO L93 Difference]: Finished difference Result 5021 states and 6731 transitions. [2021-11-22 16:25:37,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 16:25:37,303 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 [2021-11-22 16:25:37,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:25:37,307 INFO L225 Difference]: With dead ends: 5021 [2021-11-22 16:25:37,307 INFO L226 Difference]: Without dead ends: 5021 [2021-11-22 16:25:37,307 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 [2021-11-22 16:25:37,308 INFO L933 BasicCegarLoop]: 1458 mSDtfsCounter, 4961 mSDsluCounter, 1485 mSDsCounter, 0 mSdLazyCounter, 2302 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4961 SdHoareTripleChecker+Valid, 2943 SdHoareTripleChecker+Invalid, 4707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2314 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:25:37,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4961 Valid, 2943 Invalid, 4707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 2302 Invalid, 0 Unknown, 2314 Unchecked, 9.0s Time] [2021-11-22 16:25:37,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5021 states. [2021-11-22 16:25:37,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5021 to 3371. [2021-11-22 16:25:37,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3371 states, 2693 states have (on average 1.695878202747865) internal successors, (4567), 3370 states have internal predecessors, (4567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:25:37,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3371 states to 3371 states and 4567 transitions. [2021-11-22 16:25:37,364 INFO L78 Accepts]: Start accepts. Automaton has 3371 states and 4567 transitions. Word has length 62 [2021-11-22 16:25:37,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:25:37,364 INFO L470 AbstractCegarLoop]: Abstraction has 3371 states and 4567 transitions. [2021-11-22 16:25:37,365 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) [2021-11-22 16:25:37,365 INFO L276 IsEmpty]: Start isEmpty. Operand 3371 states and 4567 transitions. [2021-11-22 16:25:37,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-22 16:25:37,366 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:25:37,366 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] [2021-11-22 16:25:37,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-22 16:25:37,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:25:37,571 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr393REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1001 more)] === [2021-11-22 16:25:37,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:25:37,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1201169645, now seen corresponding path program 1 times [2021-11-22 16:25:37,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:25:37,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1256732560] [2021-11-22 16:25:37,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:25:37,572 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:25:37,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:25:37,573 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:25:37,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-22 16:25:37,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:25:37,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 16:25:37,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:25:38,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:25:38,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:25:38,133 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 [2021-11-22 16:25:38,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:25:38,441 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:25:38,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1256732560] [2021-11-22 16:25:38,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1256732560] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:25:38,442 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:25:38,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-22 16:25:38,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852889508] [2021-11-22 16:25:38,443 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:25:38,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 16:25:38,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:25:38,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 16:25:38,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-22 16:25:38,444 INFO L87 Difference]: Start difference. First operand 3371 states and 4567 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) [2021-11-22 16:25:42,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:25:42,000 INFO L93 Difference]: Finished difference Result 3372 states and 4560 transitions. [2021-11-22 16:25:42,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:25:42,001 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 [2021-11-22 16:25:42,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:25:42,004 INFO L225 Difference]: With dead ends: 3372 [2021-11-22 16:25:42,004 INFO L226 Difference]: Without dead ends: 3372 [2021-11-22 16:25:42,004 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 [2021-11-22 16:25:42,005 INFO L933 BasicCegarLoop]: 1140 mSDtfsCounter, 5112 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 832 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5112 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-22 16:25:42,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5112 Valid, 1290 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 832 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-22 16:25:42,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3372 states. [2021-11-22 16:25:42,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3372 to 3368. [2021-11-22 16:25:42,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3368 states, 2693 states have (on average 1.6932788711474192) internal successors, (4560), 3367 states have internal predecessors, (4560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:25:42,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3368 states to 3368 states and 4560 transitions. [2021-11-22 16:25:42,042 INFO L78 Accepts]: Start accepts. Automaton has 3368 states and 4560 transitions. Word has length 64 [2021-11-22 16:25:42,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:25:42,043 INFO L470 AbstractCegarLoop]: Abstraction has 3368 states and 4560 transitions. [2021-11-22 16:25:42,043 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) [2021-11-22 16:25:42,043 INFO L276 IsEmpty]: Start isEmpty. Operand 3368 states and 4560 transitions. [2021-11-22 16:25:42,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-22 16:25:42,044 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:25:42,044 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] [2021-11-22 16:25:42,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-11-22 16:25:42,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:25:42,259 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr396ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1001 more)] === [2021-11-22 16:25:42,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:25:42,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1203198829, now seen corresponding path program 1 times [2021-11-22 16:25:42,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:25:42,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1119019914] [2021-11-22 16:25:42,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:25:42,260 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:25:42,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:25:42,261 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:25:42,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-22 16:25:42,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:25:42,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 16:25:42,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:25:42,564 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 [2021-11-22 16:25:42,582 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 [2021-11-22 16:25:42,623 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 [2021-11-22 16:25:42,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:25:42,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:25:42,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:25:42,786 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:25:42,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1119019914] [2021-11-22 16:25:42,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1119019914] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:25:42,786 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:25:42,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-22 16:25:42,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146367478] [2021-11-22 16:25:42,786 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:25:42,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 16:25:42,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:25:42,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 16:25:42,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 16:25:42,787 INFO L87 Difference]: Start difference. First operand 3368 states and 4560 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) [2021-11-22 16:25:51,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:25:51,773 INFO L93 Difference]: Finished difference Result 5366 states and 7184 transitions. [2021-11-22 16:25:51,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-22 16:25:51,774 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 68 [2021-11-22 16:25:51,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:25:51,779 INFO L225 Difference]: With dead ends: 5366 [2021-11-22 16:25:51,779 INFO L226 Difference]: Without dead ends: 5366 [2021-11-22 16:25:51,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 127 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-11-22 16:25:51,780 INFO L933 BasicCegarLoop]: 1227 mSDtfsCounter, 1673 mSDsluCounter, 4148 mSDsCounter, 0 mSdLazyCounter, 3736 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1673 SdHoareTripleChecker+Valid, 5375 SdHoareTripleChecker+Invalid, 3758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 3736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2021-11-22 16:25:51,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1673 Valid, 5375 Invalid, 3758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 3736 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2021-11-22 16:25:51,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5366 states. [2021-11-22 16:25:51,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5366 to 3367. [2021-11-22 16:25:51,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3367 states, 2693 states have (on average 1.6921648718900855) internal successors, (4557), 3366 states have internal predecessors, (4557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:25:51,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3367 states to 3367 states and 4557 transitions. [2021-11-22 16:25:51,864 INFO L78 Accepts]: Start accepts. Automaton has 3367 states and 4557 transitions. Word has length 68 [2021-11-22 16:25:51,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:25:51,866 INFO L470 AbstractCegarLoop]: Abstraction has 3367 states and 4557 transitions. [2021-11-22 16:25:51,866 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) [2021-11-22 16:25:51,866 INFO L276 IsEmpty]: Start isEmpty. Operand 3367 states and 4557 transitions. [2021-11-22 16:25:51,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-22 16:25:51,874 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:25:51,874 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] [2021-11-22 16:25:51,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-22 16:25:52,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:25:52,089 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr78ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1001 more)] === [2021-11-22 16:25:52,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:25:52,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1028979469, now seen corresponding path program 1 times [2021-11-22 16:25:52,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:25:52,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1366099010] [2021-11-22 16:25:52,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:25:52,091 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:25:52,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:25:52,091 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:25:52,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-22 16:25:52,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:25:52,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 16:25:52,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:25:52,396 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 [2021-11-22 16:25:52,409 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 [2021-11-22 16:25:52,440 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 [2021-11-22 16:25:52,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:25:52,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:25:52,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:25:52,570 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:25:52,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1366099010] [2021-11-22 16:25:52,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1366099010] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:25:52,570 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:25:52,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-22 16:25:52,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136849178] [2021-11-22 16:25:52,570 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:25:52,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 16:25:52,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:25:52,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 16:25:52,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 16:25:52,571 INFO L87 Difference]: Start difference. First operand 3367 states and 4557 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) [2021-11-22 16:26:01,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:26:01,958 INFO L93 Difference]: Finished difference Result 5358 states and 7170 transitions. [2021-11-22 16:26:01,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-22 16:26:01,959 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 68 [2021-11-22 16:26:01,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:26:01,964 INFO L225 Difference]: With dead ends: 5358 [2021-11-22 16:26:01,964 INFO L226 Difference]: Without dead ends: 5358 [2021-11-22 16:26:01,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 128 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-11-22 16:26:01,965 INFO L933 BasicCegarLoop]: 1226 mSDtfsCounter, 1673 mSDsluCounter, 4148 mSDsCounter, 0 mSdLazyCounter, 3732 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1673 SdHoareTripleChecker+Valid, 5374 SdHoareTripleChecker+Invalid, 3754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 3732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2021-11-22 16:26:01,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1673 Valid, 5374 Invalid, 3754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 3732 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2021-11-22 16:26:01,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5358 states. [2021-11-22 16:26:01,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5358 to 3366. [2021-11-22 16:26:02,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3366 states, 2693 states have (on average 1.6914222057185295) internal successors, (4555), 3365 states have internal predecessors, (4555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:26:02,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3366 states to 3366 states and 4555 transitions. [2021-11-22 16:26:02,005 INFO L78 Accepts]: Start accepts. Automaton has 3366 states and 4555 transitions. Word has length 68 [2021-11-22 16:26:02,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:26:02,006 INFO L470 AbstractCegarLoop]: Abstraction has 3366 states and 4555 transitions. [2021-11-22 16:26:02,006 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) [2021-11-22 16:26:02,006 INFO L276 IsEmpty]: Start isEmpty. Operand 3366 states and 4555 transitions. [2021-11-22 16:26:02,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-22 16:26:02,006 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:26:02,007 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] [2021-11-22 16:26:02,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-22 16:26:02,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:26:02,207 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr397ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1001 more)] === [2021-11-22 16:26:02,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:26:02,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1355543210, now seen corresponding path program 1 times [2021-11-22 16:26:02,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:26:02,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2038260488] [2021-11-22 16:26:02,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:26:02,209 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:26:02,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:26:02,210 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:26:02,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-22 16:26:02,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:26:02,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-22 16:26:02,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:26:02,591 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 [2021-11-22 16:26:02,623 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 [2021-11-22 16:26:02,635 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 [2021-11-22 16:26:02,717 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 [2021-11-22 16:26:02,722 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 [2021-11-22 16:26:02,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:26:02,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:26:03,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:26:03,479 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:26:03,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2038260488] [2021-11-22 16:26:03,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2038260488] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:26:03,480 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:26:03,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-22 16:26:03,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829752044] [2021-11-22 16:26:03,481 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:26:03,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 16:26:03,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:26:03,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 16:26:03,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-22 16:26:03,484 INFO L87 Difference]: Start difference. First operand 3366 states and 4555 transitions. Second operand has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:26:37,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:26:37,422 INFO L93 Difference]: Finished difference Result 4831 states and 6433 transitions. [2021-11-22 16:26:37,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 16:26:37,424 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 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 69 [2021-11-22 16:26:37,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:26:37,428 INFO L225 Difference]: With dead ends: 4831 [2021-11-22 16:26:37,428 INFO L226 Difference]: Without dead ends: 4831 [2021-11-22 16:26:37,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-11-22 16:26:37,429 INFO L933 BasicCegarLoop]: 1196 mSDtfsCounter, 1628 mSDsluCounter, 7139 mSDsCounter, 0 mSdLazyCounter, 6191 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1628 SdHoareTripleChecker+Valid, 8335 SdHoareTripleChecker+Invalid, 6203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 6191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.6s IncrementalHoareTripleChecker+Time [2021-11-22 16:26:37,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1628 Valid, 8335 Invalid, 6203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 6191 Invalid, 0 Unknown, 0 Unchecked, 33.6s Time] [2021-11-22 16:26:37,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4831 states. [2021-11-22 16:26:37,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4831 to 3365. [2021-11-22 16:26:37,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3365 states, 2693 states have (on average 1.6903082064611956) internal successors, (4552), 3364 states have internal predecessors, (4552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:26:37,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3365 states to 3365 states and 4552 transitions. [2021-11-22 16:26:37,479 INFO L78 Accepts]: Start accepts. Automaton has 3365 states and 4552 transitions. Word has length 69 [2021-11-22 16:26:37,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:26:37,479 INFO L470 AbstractCegarLoop]: Abstraction has 3365 states and 4552 transitions. [2021-11-22 16:26:37,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:26:37,479 INFO L276 IsEmpty]: Start isEmpty. Operand 3365 states and 4552 transitions. [2021-11-22 16:26:37,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-22 16:26:37,480 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:26:37,480 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] [2021-11-22 16:26:37,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-22 16:26:37,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:26:37,681 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr79ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1001 more)] === [2021-11-22 16:26:37,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:26:37,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1833592125, now seen corresponding path program 1 times [2021-11-22 16:26:37,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:26:37,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [298745981] [2021-11-22 16:26:37,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:26:37,682 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:26:37,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:26:37,685 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:26:37,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-22 16:26:37,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:26:37,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-22 16:26:37,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:26:38,059 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 [2021-11-22 16:26:38,090 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 [2021-11-22 16:26:38,100 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 [2021-11-22 16:26:38,162 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 [2021-11-22 16:26:38,165 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 [2021-11-22 16:26:38,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:26:38,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:26:38,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:26:38,736 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:26:38,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [298745981] [2021-11-22 16:26:38,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [298745981] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:26:38,737 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:26:38,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-22 16:26:38,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28198193] [2021-11-22 16:26:38,737 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:26:38,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 16:26:38,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:26:38,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 16:26:38,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-22 16:26:38,738 INFO L87 Difference]: Start difference. First operand 3365 states and 4552 transitions. Second operand has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:27:12,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:27:12,370 INFO L93 Difference]: Finished difference Result 4826 states and 6424 transitions. [2021-11-22 16:27:12,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 16:27:12,371 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 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 69 [2021-11-22 16:27:12,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:27:12,379 INFO L225 Difference]: With dead ends: 4826 [2021-11-22 16:27:12,379 INFO L226 Difference]: Without dead ends: 4826 [2021-11-22 16:27:12,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-11-22 16:27:12,380 INFO L933 BasicCegarLoop]: 1195 mSDtfsCounter, 1656 mSDsluCounter, 7005 mSDsCounter, 0 mSdLazyCounter, 6039 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1656 SdHoareTripleChecker+Valid, 8200 SdHoareTripleChecker+Invalid, 6055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 6039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.3s IncrementalHoareTripleChecker+Time [2021-11-22 16:27:12,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1656 Valid, 8200 Invalid, 6055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 6039 Invalid, 0 Unknown, 0 Unchecked, 33.3s Time] [2021-11-22 16:27:12,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4826 states. [2021-11-22 16:27:12,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4826 to 3364. [2021-11-22 16:27:12,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3364 states, 2693 states have (on average 1.68956554028964) internal successors, (4550), 3363 states have internal predecessors, (4550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:27:12,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3364 states to 3364 states and 4550 transitions. [2021-11-22 16:27:12,445 INFO L78 Accepts]: Start accepts. Automaton has 3364 states and 4550 transitions. Word has length 69 [2021-11-22 16:27:12,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:27:12,446 INFO L470 AbstractCegarLoop]: Abstraction has 3364 states and 4550 transitions. [2021-11-22 16:27:12,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:27:12,446 INFO L276 IsEmpty]: Start isEmpty. Operand 3364 states and 4550 transitions. [2021-11-22 16:27:12,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-22 16:27:12,447 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:27:12,447 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:27:12,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-11-22 16:27:12,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:27:12,647 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr400REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1001 more)] === [2021-11-22 16:27:12,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:27:12,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1361720913, now seen corresponding path program 1 times [2021-11-22 16:27:12,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:27:12,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [141012857] [2021-11-22 16:27:12,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:27:12,649 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:27:12,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:27:12,650 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:27:12,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-22 16:27:12,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:27:12,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 16:27:12,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:27:13,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:27:13,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:27:13,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:27:13,223 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:27:13,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [141012857] [2021-11-22 16:27:13,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [141012857] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:27:13,223 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:27:13,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-22 16:27:13,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45247835] [2021-11-22 16:27:13,224 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:27:13,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 16:27:13,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:27:13,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 16:27:13,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-22 16:27:13,225 INFO L87 Difference]: Start difference. First operand 3364 states and 4550 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:27:13,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:27:13,547 INFO L93 Difference]: Finished difference Result 6091 states and 8154 transitions. [2021-11-22 16:27:13,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 16:27:13,548 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 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 73 [2021-11-22 16:27:13,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:27:13,552 INFO L225 Difference]: With dead ends: 6091 [2021-11-22 16:27:13,553 INFO L226 Difference]: Without dead ends: 6091 [2021-11-22 16:27:13,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-11-22 16:27:13,554 INFO L933 BasicCegarLoop]: 2332 mSDtfsCounter, 1788 mSDsluCounter, 6320 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1788 SdHoareTripleChecker+Valid, 8652 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 16:27:13,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1788 Valid, 8652 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 16:27:13,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6091 states. [2021-11-22 16:27:13,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6091 to 3379. [2021-11-22 16:27:13,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3379 states, 2708 states have (on average 1.6857459379615953) internal successors, (4565), 3378 states have internal predecessors, (4565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:27:13,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3379 states to 3379 states and 4565 transitions. [2021-11-22 16:27:13,601 INFO L78 Accepts]: Start accepts. Automaton has 3379 states and 4565 transitions. Word has length 73 [2021-11-22 16:27:13,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:27:13,601 INFO L470 AbstractCegarLoop]: Abstraction has 3379 states and 4565 transitions. [2021-11-22 16:27:13,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:27:13,601 INFO L276 IsEmpty]: Start isEmpty. Operand 3379 states and 4565 transitions. [2021-11-22 16:27:13,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-22 16:27:13,602 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:27:13,602 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:27:13,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-11-22 16:27:13,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:27:13,802 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr400REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1001 more)] === [2021-11-22 16:27:13,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:27:13,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1412235279, now seen corresponding path program 1 times [2021-11-22 16:27:13,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:27:13,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2092271282] [2021-11-22 16:27:13,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:27:13,804 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:27:13,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:27:13,805 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:27:13,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-22 16:27:14,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:27:14,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 16:27:14,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:27:14,313 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:27:14,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:27:14,535 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:27:14,535 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:27:14,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2092271282] [2021-11-22 16:27:14,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2092271282] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:27:14,535 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 16:27:14,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-22 16:27:14,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565791266] [2021-11-22 16:27:14,536 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 16:27:14,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 16:27:14,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:27:14,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 16:27:14,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-22 16:27:14,537 INFO L87 Difference]: Start difference. First operand 3379 states and 4565 transitions. Second operand has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:27:15,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:27:15,410 INFO L93 Difference]: Finished difference Result 5385 states and 7187 transitions. [2021-11-22 16:27:15,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-22 16:27:15,411 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 0 states have call successors, (0), 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 75 [2021-11-22 16:27:15,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:27:15,416 INFO L225 Difference]: With dead ends: 5385 [2021-11-22 16:27:15,416 INFO L226 Difference]: Without dead ends: 5385 [2021-11-22 16:27:15,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=144, Unknown=0, NotChecked=0, Total=240 [2021-11-22 16:27:15,417 INFO L933 BasicCegarLoop]: 1914 mSDtfsCounter, 1369 mSDsluCounter, 9196 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1369 SdHoareTripleChecker+Valid, 11110 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-22 16:27:15,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1369 Valid, 11110 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-22 16:27:15,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5385 states. [2021-11-22 16:27:15,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5385 to 3409. [2021-11-22 16:27:15,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3409 states, 2738 states have (on average 1.6782322863403945) internal successors, (4595), 3408 states have internal predecessors, (4595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:27:15,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3409 states to 3409 states and 4595 transitions. [2021-11-22 16:27:15,456 INFO L78 Accepts]: Start accepts. Automaton has 3409 states and 4595 transitions. Word has length 75 [2021-11-22 16:27:15,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:27:15,456 INFO L470 AbstractCegarLoop]: Abstraction has 3409 states and 4595 transitions. [2021-11-22 16:27:15,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:27:15,457 INFO L276 IsEmpty]: Start isEmpty. Operand 3409 states and 4595 transitions. [2021-11-22 16:27:15,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-22 16:27:15,457 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:27:15,458 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:27:15,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-11-22 16:27:15,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:27:15,661 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr400REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1001 more)] === [2021-11-22 16:27:15,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:27:15,661 INFO L85 PathProgramCache]: Analyzing trace with hash -547693775, now seen corresponding path program 2 times [2021-11-22 16:27:15,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:27:15,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1692293776] [2021-11-22 16:27:15,662 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 16:27:15,662 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:27:15,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:27:15,663 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:27:15,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c48c3-80d6-4ce0-a775-022619c6dac1/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-22 16:27:16,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-22 16:27:16,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 16:27:16,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-22 16:27:16,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:27:16,098 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 [2021-11-22 16:27:16,120 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 16:27:16,121 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 16:27:16,122 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 16:27:16,216 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-22 16:27:16,217 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 [2021-11-22 16:27:16,375 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 16:27:16,375 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 16 treesize of output 16 [2021-11-22 16:27:16,654 INFO L354 Elim1Store]: treesize reduction 229, result has 11.2 percent of original size [2021-11-22 16:27:16,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 66 treesize of output 86 [2021-11-22 16:27:22,394 INFO L354 Elim1Store]: treesize reduction 1963, result has 5.1 percent of original size [2021-11-22 16:27:22,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 39 case distinctions, treesize of input 118 treesize of output 150 [2021-11-22 16:27:32,537 INFO L354 Elim1Store]: treesize reduction 876, result has 0.1 percent of original size [2021-11-22 16:27:32,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 157 treesize of output 67 [2021-11-22 16:27:32,736 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-22 16:27:32,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:27:41,261 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_323| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_323|))) (forall ((|ULTIMATE.start_main_#t~mem11#1| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem9#1| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem10#1| (_ BitVec 32)) (|ULTIMATE.start_main_~user~0#1.offset| (_ BitVec 32))) (bvslt (let ((.cse0 (select (store |c_#memory_int| |v_ULTIMATE.start_main_~user~0#1.base_323| (let ((.cse1 (bvmul |ULTIMATE.start_main_#t~mem10#1| |ULTIMATE.start_main_#t~mem11#1|))) (store (store (store (store (store (store (store (store (select |c_#memory_int| |v_ULTIMATE.start_main_~user~0#1.base_323|) |ULTIMATE.start_main_~user~0#1.offset| ((_ extract 7 0) |ULTIMATE.start_main_#t~mem9#1|)) (bvadd (_ bv1 32) |ULTIMATE.start_main_~user~0#1.offset|) ((_ extract 15 8) |ULTIMATE.start_main_#t~mem9#1|)) (bvadd (_ bv2 32) |ULTIMATE.start_main_~user~0#1.offset|) ((_ extract 23 16) |ULTIMATE.start_main_#t~mem9#1|)) (bvadd (_ bv3 32) |ULTIMATE.start_main_~user~0#1.offset|) ((_ extract 31 24) |ULTIMATE.start_main_#t~mem9#1|)) (bvadd (_ bv4 32) |ULTIMATE.start_main_~user~0#1.offset|) ((_ extract 7 0) .cse1)) (bvadd (_ bv5 32) |ULTIMATE.start_main_~user~0#1.offset|) ((_ extract 15 8) .cse1)) (bvadd (_ bv6 32) |ULTIMATE.start_main_~user~0#1.offset|) ((_ extract 23 16) .cse1)) (bvadd (_ bv7 32) |ULTIMATE.start_main_~user~0#1.offset|) ((_ extract 31 24) .cse1)))) |c_ULTIMATE.start_main_~#i~0#1.base|))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) |c_ULTIMATE.start_main_~#i~0#1.offset|)) (select .cse0 (bvadd (_ bv2 32) |c_ULTIMATE.start_main_~#i~0#1.offset|))) (select .cse0 (bvadd (_ bv1 32) |c_ULTIMATE.start_main_~#i~0#1.offset|))) (select .cse0 |c_ULTIMATE.start_main_~#i~0#1.offset|))) (_ bv10 32))))) is different from false