./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX --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 9a814f1cabb0a814aaaa0ad04ef0792a07c6fb7c73876a2da6ae85372115ff6c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:39:38,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:39:38,278 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:39:38,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:39:38,335 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:39:38,340 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:39:38,342 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:39:38,346 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:39:38,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:39:38,354 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:39:38,355 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:39:38,358 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:39:38,358 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:39:38,361 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:39:38,363 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:39:38,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:39:38,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:39:38,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:39:38,373 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:39:38,375 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:39:38,377 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:39:38,379 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:39:38,380 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:39:38,381 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:39:38,385 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:39:38,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:39:38,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:39:38,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:39:38,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:39:38,390 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:39:38,390 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:39:38,391 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:39:38,393 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:39:38,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:39:38,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:39:38,397 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:39:38,398 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:39:38,398 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:39:38,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:39:38,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:39:38,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:39:38,402 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-09 08:39:38,445 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:39:38,445 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:39:38,446 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:39:38,446 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:39:38,449 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:39:38,449 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:39:38,449 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:39:38,450 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:39:38,450 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 08:39:38,450 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 08:39:38,451 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:39:38,451 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 08:39:38,452 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:39:38,452 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-09 08:39:38,452 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-09 08:39:38,452 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-09 08:39:38,452 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:39:38,453 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-09 08:39:38,453 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 08:39:38,453 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:39:38,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:39:38,454 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:39:38,454 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:39:38,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:39:38,454 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:39:38,454 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:39:38,455 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 08:39:38,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 08:39:38,455 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:39:38,456 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_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a814f1cabb0a814aaaa0ad04ef0792a07c6fb7c73876a2da6ae85372115ff6c [2021-11-09 08:39:38,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:39:38,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:39:38,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:39:38,836 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:39:38,838 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:39:38,838 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i [2021-11-09 08:39:38,930 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/data/3e0b91363/c25ca79ee34b408880b75ba744233e56/FLAG3c62310a4 [2021-11-09 08:39:39,545 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:39:39,550 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i [2021-11-09 08:39:39,579 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/data/3e0b91363/c25ca79ee34b408880b75ba744233e56/FLAG3c62310a4 [2021-11-09 08:39:39,751 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/data/3e0b91363/c25ca79ee34b408880b75ba744233e56 [2021-11-09 08:39:39,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:39:39,755 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-09 08:39:39,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:39:39,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:39:39,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:39:39,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:39:39" (1/1) ... [2021-11-09 08:39:39,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17833322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:39:39, skipping insertion in model container [2021-11-09 08:39:39,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:39:39" (1/1) ... [2021-11-09 08:39:39,772 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:39:39,853 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:39:40,236 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i[33021,33034] [2021-11-09 08:39:40,334 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i[44590,44603] [2021-11-09 08:39:40,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:39:40,353 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) [2021-11-09 08:39:40,354 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@29e2b0b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:39:40, skipping insertion in model container [2021-11-09 08:39:40,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:39:40,358 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-09 08:39:40,365 INFO L168 Benchmark]: Toolchain (without parser) took 608.31 ms. Allocated memory was 94.4 MB in the beginning and 127.9 MB in the end (delta: 33.6 MB). Free memory was 57.8 MB in the beginning and 92.5 MB in the end (delta: -34.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 08:39:40,366 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 94.4 MB. Free memory was 65.0 MB in the beginning and 64.9 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:39:40,367 INFO L168 Benchmark]: CACSL2BoogieTranslator took 599.06 ms. Allocated memory was 94.4 MB in the beginning and 127.9 MB in the end (delta: 33.6 MB). Free memory was 57.5 MB in the beginning and 92.5 MB in the end (delta: -35.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 08:39:40,369 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 94.4 MB. Free memory was 65.0 MB in the beginning and 64.9 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 599.06 ms. Allocated memory was 94.4 MB in the beginning and 127.9 MB in the end (delta: 33.6 MB). Free memory was 57.5 MB in the beginning and 92.5 MB in the end (delta: -35.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 736]: 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_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX --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 9a814f1cabb0a814aaaa0ad04ef0792a07c6fb7c73876a2da6ae85372115ff6c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:39:42,724 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:39:42,727 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:39:42,775 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:39:42,776 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:39:42,782 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:39:42,784 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:39:42,791 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:39:42,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:39:42,800 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:39:42,802 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:39:42,804 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:39:42,804 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:39:42,807 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:39:42,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:39:42,814 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:39:42,815 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:39:42,820 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:39:42,822 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:39:42,833 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:39:42,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:39:42,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:39:42,840 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:39:42,842 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:39:42,846 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:39:42,846 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:39:42,847 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:39:42,849 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:39:42,850 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:39:42,851 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:39:42,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:39:42,853 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:39:42,856 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:39:42,857 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:39:42,859 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:39:42,859 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:39:42,860 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:39:42,860 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:39:42,860 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:39:42,863 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:39:42,863 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:39:42,869 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-09 08:39:42,920 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:39:42,920 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:39:42,921 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:39:42,921 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:39:42,925 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:39:42,926 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:39:42,926 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:39:42,926 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:39:42,926 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 08:39:42,927 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 08:39:42,928 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:39:42,928 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 08:39:42,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:39:42,929 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-09 08:39:42,929 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-09 08:39:42,929 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-09 08:39:42,929 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:39:42,930 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-09 08:39:42,930 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-09 08:39:42,930 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-09 08:39:42,930 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 08:39:42,930 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:39:42,931 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:39:42,931 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:39:42,931 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:39:42,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:39:42,932 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:39:42,932 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:39:42,932 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-09 08:39:42,932 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-09 08:39:42,933 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:39:42,933 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-09 08:39:42,933 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_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a814f1cabb0a814aaaa0ad04ef0792a07c6fb7c73876a2da6ae85372115ff6c [2021-11-09 08:39:43,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:39:43,349 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:39:43,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:39:43,353 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:39:43,354 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:39:43,355 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i [2021-11-09 08:39:43,426 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/data/edc9d147b/7a26b8fcb39d4086a7080a6c9c77efa8/FLAG0efbf96a7 [2021-11-09 08:39:44,056 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:39:44,056 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i [2021-11-09 08:39:44,075 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/data/edc9d147b/7a26b8fcb39d4086a7080a6c9c77efa8/FLAG0efbf96a7 [2021-11-09 08:39:44,316 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/data/edc9d147b/7a26b8fcb39d4086a7080a6c9c77efa8 [2021-11-09 08:39:44,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:39:44,320 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-09 08:39:44,331 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:39:44,331 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:39:44,335 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:39:44,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:39:44" (1/1) ... [2021-11-09 08:39:44,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eb5efa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:39:44, skipping insertion in model container [2021-11-09 08:39:44,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:39:44" (1/1) ... [2021-11-09 08:39:44,346 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:39:44,428 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:39:44,914 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i[33021,33034] [2021-11-09 08:39:45,093 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i[44590,44603] [2021-11-09 08:39:45,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:39:45,115 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-09 08:39:45,157 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:39:45,193 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i[33021,33034] [2021-11-09 08:39:45,289 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i[44590,44603] [2021-11-09 08:39:45,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:39:45,306 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 08:39:45,359 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i[33021,33034] [2021-11-09 08:39:45,461 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i[44590,44603] [2021-11-09 08:39:45,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:39:45,545 INFO L208 MainTranslator]: Completed translation [2021-11-09 08:39:45,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:39:45 WrapperNode [2021-11-09 08:39:45,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:39:45,547 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 08:39:45,547 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 08:39:45,548 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 08:39:45,560 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:39:45" (1/1) ... [2021-11-09 08:39:45,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:39:45" (1/1) ... [2021-11-09 08:39:45,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:39:45" (1/1) ... [2021-11-09 08:39:45,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:39:45" (1/1) ... [2021-11-09 08:39:45,744 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:39:45" (1/1) ... [2021-11-09 08:39:45,770 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:39:45" (1/1) ... [2021-11-09 08:39:45,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:39:45" (1/1) ... [2021-11-09 08:39:45,802 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 08:39:45,810 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 08:39:45,810 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 08:39:45,810 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 08:39:45,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:39:45" (1/1) ... [2021-11-09 08:39:45,819 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:39:45,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:39:45,856 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 08:39:45,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 08:39:45,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-09 08:39:45,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 08:39:45,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-09 08:39:45,912 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-09 08:39:45,913 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-09 08:39:45,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-09 08:39:45,915 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-09 08:39:45,915 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-09 08:39:45,915 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-09 08:39:45,915 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-09 08:39:45,916 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-09 08:39:45,916 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-09 08:39:45,916 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-09 08:39:45,916 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-09 08:39:45,916 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-09 08:39:45,916 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-09 08:39:45,917 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-09 08:39:45,917 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-09 08:39:45,917 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-09 08:39:45,917 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-09 08:39:45,917 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-09 08:39:45,917 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-09 08:39:45,918 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-09 08:39:45,918 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-09 08:39:45,918 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-09 08:39:45,918 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-09 08:39:45,918 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-09 08:39:45,919 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-09 08:39:45,919 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-09 08:39:45,919 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-09 08:39:45,920 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-09 08:39:45,920 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-09 08:39:45,920 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-09 08:39:45,920 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-09 08:39:45,921 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-09 08:39:45,921 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-09 08:39:45,922 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-09 08:39:45,922 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-09 08:39:45,922 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-09 08:39:45,922 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-09 08:39:45,923 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-09 08:39:45,923 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-09 08:39:45,923 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-09 08:39:45,923 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-09 08:39:45,924 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-09 08:39:45,924 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-09 08:39:45,924 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-09 08:39:45,924 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-09 08:39:45,924 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-09 08:39:45,924 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-09 08:39:45,925 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-09 08:39:45,925 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-09 08:39:45,925 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-09 08:39:45,925 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-09 08:39:45,926 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-09 08:39:45,926 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-09 08:39:45,927 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-09 08:39:45,927 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-09 08:39:45,928 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-09 08:39:45,928 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-09 08:39:45,928 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-09 08:39:45,929 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-09 08:39:45,929 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-09 08:39:45,929 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-09 08:39:45,929 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-09 08:39:45,930 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-09 08:39:45,930 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-09 08:39:45,930 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-09 08:39:45,930 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-09 08:39:45,930 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-09 08:39:45,930 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-09 08:39:45,930 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-09 08:39:45,931 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-09 08:39:45,931 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-09 08:39:45,931 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-09 08:39:45,931 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-09 08:39:45,931 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-09 08:39:45,931 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-09 08:39:45,932 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-09 08:39:45,932 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-09 08:39:45,932 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-09 08:39:45,932 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-09 08:39:45,932 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-09 08:39:45,932 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-09 08:39:45,932 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-09 08:39:45,933 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-09 08:39:45,933 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-09 08:39:45,933 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-09 08:39:45,933 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-09 08:39:45,933 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-09 08:39:45,933 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-09 08:39:45,934 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-09 08:39:45,934 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-09 08:39:45,934 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-09 08:39:45,934 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-09 08:39:45,935 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-09 08:39:45,935 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-09 08:39:45,935 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-09 08:39:45,935 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-09 08:39:45,935 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-09 08:39:45,935 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-09 08:39:45,935 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-09 08:39:45,936 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-09 08:39:45,936 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-09 08:39:45,936 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-09 08:39:45,936 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-09 08:39:45,936 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-09 08:39:45,936 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-09 08:39:45,937 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-09 08:39:45,937 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-09 08:39:45,937 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-09 08:39:45,937 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-09 08:39:45,937 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-09 08:39:45,938 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-09 08:39:45,938 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-09 08:39:45,938 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-09 08:39:45,939 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-09 08:39:45,939 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-09 08:39:45,943 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-09 08:39:45,943 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-09 08:39:45,943 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-09 08:39:45,943 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-09 08:39:45,944 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-09 08:39:45,945 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-09 08:39:45,945 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-09 08:39:45,945 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-09 08:39:45,946 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-09 08:39:45,952 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-09 08:39:45,952 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-09 08:39:45,952 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-09 08:39:45,953 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-09 08:39:45,953 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-09 08:39:45,953 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-09 08:39:45,954 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-09 08:39:45,954 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-09 08:39:45,954 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-09 08:39:45,954 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-09 08:39:45,954 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-09 08:39:45,955 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-09 08:39:45,955 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-09 08:39:45,955 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-09 08:39:45,955 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-09 08:39:45,955 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-09 08:39:45,955 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-09 08:39:45,955 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-09 08:39:45,956 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-09 08:39:45,956 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-09 08:39:45,956 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-09 08:39:45,956 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-09 08:39:45,956 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-09 08:39:45,956 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-09 08:39:45,956 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-09 08:39:45,957 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-09 08:39:45,957 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-09 08:39:45,958 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-09 08:39:45,958 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-09 08:39:45,958 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-09 08:39:45,958 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-09 08:39:45,958 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-09 08:39:45,958 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-09 08:39:45,959 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-09 08:39:45,959 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-09 08:39:45,959 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-09 08:39:45,959 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-09 08:39:45,959 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-09 08:39:45,959 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-09 08:39:45,959 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-09 08:39:45,959 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-09 08:39:45,960 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-09 08:39:45,960 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-09 08:39:45,960 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-09 08:39:45,960 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-09 08:39:45,960 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-09 08:39:45,960 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-09 08:39:45,960 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-09 08:39:45,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 08:39:45,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-09 08:39:45,961 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-09 08:39:45,961 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-09 08:39:45,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 08:39:45,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-09 08:39:45,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-09 08:39:45,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-09 08:39:45,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-09 08:39:45,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-09 08:39:45,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-09 08:39:45,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 08:39:45,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-09 08:39:45,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-09 08:39:45,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 08:39:45,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-09 08:39:45,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-09 08:39:46,512 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-09 08:39:51,174 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 08:39:51,174 INFO L299 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-09 08:39:51,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:39:51 BoogieIcfgContainer [2021-11-09 08:39:51,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 08:39:51,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 08:39:51,180 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 08:39:51,183 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 08:39:51,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 08:39:44" (1/3) ... [2021-11-09 08:39:51,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@93fb323 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:39:51, skipping insertion in model container [2021-11-09 08:39:51,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:39:45" (2/3) ... [2021-11-09 08:39:51,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@93fb323 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:39:51, skipping insertion in model container [2021-11-09 08:39:51,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:39:51" (3/3) ... [2021-11-09 08:39:51,186 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test3-1.i [2021-11-09 08:39:51,191 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 08:39:51,192 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 534 error locations. [2021-11-09 08:39:51,238 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 08:39:51,245 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 [2021-11-09 08:39:51,245 INFO L340 AbstractCegarLoop]: Starting to check reachability of 534 error locations. [2021-11-09 08:39:51,308 INFO L276 IsEmpty]: Start isEmpty. Operand has 1080 states, 532 states have (on average 2.2406015037593985) internal successors, (1192), 1068 states have internal predecessors, (1192), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-09 08:39:51,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-09 08:39:51,317 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:39:51,317 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:39:51,319 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-09 08:39:51,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:39:51,329 INFO L85 PathProgramCache]: Analyzing trace with hash 976431319, now seen corresponding path program 1 times [2021-11-09 08:39:51,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:39:51,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2138774000] [2021-11-09 08:39:51,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:39:51,343 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:39:51,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:39:51,350 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:39:51,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-09 08:39:51,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:39:51,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:39:51,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:39:51,724 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 [2021-11-09 08:39:51,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:39:51,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:39:51,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:39:51,807 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:39:51,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2138774000] [2021-11-09 08:39:51,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2138774000] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:39:51,808 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:39:51,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 08:39:51,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488532789] [2021-11-09 08:39:51,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:39:51,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:39:51,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:39:51,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:39:51,852 INFO L87 Difference]: Start difference. First operand has 1080 states, 532 states have (on average 2.2406015037593985) internal successors, (1192), 1068 states have internal predecessors, (1192), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:39:53,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:39:53,851 INFO L93 Difference]: Finished difference Result 1075 states and 1140 transitions. [2021-11-09 08:39:53,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:39:53,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-09 08:39:53,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:39:53,879 INFO L225 Difference]: With dead ends: 1075 [2021-11-09 08:39:53,879 INFO L226 Difference]: Without dead ends: 1072 [2021-11-09 08:39:53,880 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:39:53,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2021-11-09 08:39:53,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 1064. [2021-11-09 08:39:53,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1064 states, 532 states have (on average 2.0845864661654137) internal successors, (1109), 1053 states have internal predecessors, (1109), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-09 08:39:53,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1130 transitions. [2021-11-09 08:39:53,988 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1130 transitions. Word has length 7 [2021-11-09 08:39:53,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:39:53,988 INFO L470 AbstractCegarLoop]: Abstraction has 1064 states and 1130 transitions. [2021-11-09 08:39:53,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:39:53,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1130 transitions. [2021-11-09 08:39:53,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-09 08:39:53,989 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:39:53,989 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:39:54,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-09 08:39:54,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:39:54,190 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-09 08:39:54,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:39:54,191 INFO L85 PathProgramCache]: Analyzing trace with hash 976431320, now seen corresponding path program 1 times [2021-11-09 08:39:54,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:39:54,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [527577089] [2021-11-09 08:39:54,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:39:54,192 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:39:54,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:39:54,194 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:39:54,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-09 08:39:54,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:39:54,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:39:54,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:39:54,431 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 [2021-11-09 08:39:54,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:39:54,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:39:54,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:39:54,526 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:39:54,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [527577089] [2021-11-09 08:39:54,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [527577089] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:39:54,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:39:54,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-09 08:39:54,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554788317] [2021-11-09 08:39:54,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:39:54,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:39:54,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:39:54,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:39:54,533 INFO L87 Difference]: Start difference. First operand 1064 states and 1130 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:39:59,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:39:59,407 INFO L93 Difference]: Finished difference Result 1538 states and 1638 transitions. [2021-11-09 08:39:59,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:39:59,408 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-09 08:39:59,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:39:59,416 INFO L225 Difference]: With dead ends: 1538 [2021-11-09 08:39:59,417 INFO L226 Difference]: Without dead ends: 1538 [2021-11-09 08:39:59,417 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:39:59,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1538 states. [2021-11-09 08:39:59,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1538 to 1099. [2021-11-09 08:39:59,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 576 states have (on average 2.0625) internal successors, (1188), 1088 states have internal predecessors, (1188), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-09 08:39:59,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 1209 transitions. [2021-11-09 08:39:59,452 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 1209 transitions. Word has length 7 [2021-11-09 08:39:59,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:39:59,452 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 1209 transitions. [2021-11-09 08:39:59,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:39:59,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 1209 transitions. [2021-11-09 08:39:59,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-09 08:39:59,453 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:39:59,453 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:39:59,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-09 08:39:59,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:39:59,670 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-09 08:39:59,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:39:59,671 INFO L85 PathProgramCache]: Analyzing trace with hash -499465612, now seen corresponding path program 1 times [2021-11-09 08:39:59,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:39:59,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1240783726] [2021-11-09 08:39:59,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:39:59,672 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:39:59,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:39:59,673 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:39:59,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-09 08:39:59,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:39:59,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:39:59,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:39:59,883 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 [2021-11-09 08:39:59,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:39:59,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:39:59,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:39:59,937 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:39:59,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1240783726] [2021-11-09 08:39:59,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1240783726] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:39:59,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:39:59,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 08:39:59,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866601344] [2021-11-09 08:39:59,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:39:59,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:39:59,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:39:59,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:39:59,940 INFO L87 Difference]: Start difference. First operand 1099 states and 1209 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:40:02,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:40:02,050 INFO L93 Difference]: Finished difference Result 1427 states and 1562 transitions. [2021-11-09 08:40:02,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:40:02,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-09 08:40:02,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:40:02,059 INFO L225 Difference]: With dead ends: 1427 [2021-11-09 08:40:02,059 INFO L226 Difference]: Without dead ends: 1427 [2021-11-09 08:40:02,060 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:40:02,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2021-11-09 08:40:02,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 1050. [2021-11-09 08:40:02,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1050 states, 576 states have (on average 1.9722222222222223) internal successors, (1136), 1039 states have internal predecessors, (1136), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-09 08:40:02,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1157 transitions. [2021-11-09 08:40:02,090 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1157 transitions. Word has length 12 [2021-11-09 08:40:02,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:40:02,090 INFO L470 AbstractCegarLoop]: Abstraction has 1050 states and 1157 transitions. [2021-11-09 08:40:02,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:40:02,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1157 transitions. [2021-11-09 08:40:02,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-09 08:40:02,091 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:40:02,092 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:40:02,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-09 08:40:02,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:40:02,306 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr7REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-09 08:40:02,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:40:02,306 INFO L85 PathProgramCache]: Analyzing trace with hash -499465611, now seen corresponding path program 1 times [2021-11-09 08:40:02,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:40:02,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [907263435] [2021-11-09 08:40:02,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:40:02,307 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:40:02,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:40:02,309 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:40:02,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-09 08:40:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:40:02,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:40:02,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:40:02,524 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 [2021-11-09 08:40:02,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:40:02,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:40:02,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:40:02,686 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:40:02,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [907263435] [2021-11-09 08:40:02,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [907263435] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:40:02,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:40:02,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-09 08:40:02,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60883342] [2021-11-09 08:40:02,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:40:02,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:40:02,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:40:02,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:40:02,688 INFO L87 Difference]: Start difference. First operand 1050 states and 1157 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:40:06,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:40:06,771 INFO L93 Difference]: Finished difference Result 1470 states and 1569 transitions. [2021-11-09 08:40:06,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:40:06,772 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-09 08:40:06,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:40:06,779 INFO L225 Difference]: With dead ends: 1470 [2021-11-09 08:40:06,779 INFO L226 Difference]: Without dead ends: 1470 [2021-11-09 08:40:06,780 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:40:06,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2021-11-09 08:40:06,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 1040. [2021-11-09 08:40:06,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1040 states, 576 states have (on average 1.9496527777777777) internal successors, (1123), 1029 states have internal predecessors, (1123), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-09 08:40:06,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1144 transitions. [2021-11-09 08:40:06,822 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1144 transitions. Word has length 12 [2021-11-09 08:40:06,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:40:06,823 INFO L470 AbstractCegarLoop]: Abstraction has 1040 states and 1144 transitions. [2021-11-09 08:40:06,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:40:06,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1144 transitions. [2021-11-09 08:40:06,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-09 08:40:06,824 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:40:06,824 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:40:06,843 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-09 08:40:07,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:40:07,038 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr526REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-09 08:40:07,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:40:07,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1684895394, now seen corresponding path program 1 times [2021-11-09 08:40:07,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:40:07,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1213356968] [2021-11-09 08:40:07,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:40:07,039 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:40:07,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:40:07,040 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:40:07,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-09 08:40:07,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:40:07,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 08:40:07,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:40:07,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:40:07,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:40:07,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:40:07,468 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:40:07,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1213356968] [2021-11-09 08:40:07,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1213356968] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:40:07,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:40:07,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-09 08:40:07,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302777434] [2021-11-09 08:40:07,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:40:07,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:40:07,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:40:07,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:40:07,471 INFO L87 Difference]: Start difference. First operand 1040 states and 1144 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:40:08,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:40:08,430 INFO L93 Difference]: Finished difference Result 1486 states and 1622 transitions. [2021-11-09 08:40:08,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:40:08,431 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-09 08:40:08,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:40:08,439 INFO L225 Difference]: With dead ends: 1486 [2021-11-09 08:40:08,440 INFO L226 Difference]: Without dead ends: 1486 [2021-11-09 08:40:08,441 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:40:08,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2021-11-09 08:40:08,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 1276. [2021-11-09 08:40:08,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1276 states, 812 states have (on average 1.937192118226601) internal successors, (1573), 1265 states have internal predecessors, (1573), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-09 08:40:08,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1594 transitions. [2021-11-09 08:40:08,486 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1594 transitions. Word has length 15 [2021-11-09 08:40:08,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:40:08,487 INFO L470 AbstractCegarLoop]: Abstraction has 1276 states and 1594 transitions. [2021-11-09 08:40:08,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:40:08,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1594 transitions. [2021-11-09 08:40:08,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-09 08:40:08,489 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:40:08,489 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:40:08,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-09 08:40:08,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:40:08,702 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr532ENSURES_VIOLATIONMEMORY_LEAK === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-09 08:40:08,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:40:08,703 INFO L85 PathProgramCache]: Analyzing trace with hash 692149927, now seen corresponding path program 1 times [2021-11-09 08:40:08,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:40:08,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1381291682] [2021-11-09 08:40:08,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:40:08,706 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:40:08,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:40:08,707 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:40:08,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-09 08:40:08,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:40:08,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:40:08,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:40:09,004 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 08:40:09,005 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 08:40:09,005 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 08:40:09,057 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-09 08:40:09,058 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 [2021-11-09 08:40:09,134 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-09 08:40:09,135 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 [2021-11-09 08:40:09,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:40:09,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:40:09,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:40:09,246 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:40:09,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1381291682] [2021-11-09 08:40:09,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1381291682] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:40:09,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:40:09,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-09 08:40:09,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551454062] [2021-11-09 08:40:09,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:40:09,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:40:09,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:40:09,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:40:09,248 INFO L87 Difference]: Start difference. First operand 1276 states and 1594 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:40:11,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:40:11,870 INFO L93 Difference]: Finished difference Result 1639 states and 2018 transitions. [2021-11-09 08:40:11,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:40:11,871 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-11-09 08:40:11,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:40:11,879 INFO L225 Difference]: With dead ends: 1639 [2021-11-09 08:40:11,879 INFO L226 Difference]: Without dead ends: 1639 [2021-11-09 08:40:11,880 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:40:11,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2021-11-09 08:40:11,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1275. [2021-11-09 08:40:11,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1275 states, 811 states have (on average 1.93711467324291) internal successors, (1571), 1264 states have internal predecessors, (1571), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-09 08:40:11,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 1592 transitions. [2021-11-09 08:40:11,915 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 1592 transitions. Word has length 16 [2021-11-09 08:40:11,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:40:11,915 INFO L470 AbstractCegarLoop]: Abstraction has 1275 states and 1592 transitions. [2021-11-09 08:40:11,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:40:11,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 1592 transitions. [2021-11-09 08:40:11,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-09 08:40:11,917 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:40:11,917 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:40:11,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-09 08:40:12,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:40:12,133 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr14REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-09 08:40:12,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:40:12,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1440200288, now seen corresponding path program 1 times [2021-11-09 08:40:12,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:40:12,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [644332720] [2021-11-09 08:40:12,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:40:12,134 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:40:12,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:40:12,136 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:40:12,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-09 08:40:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:40:12,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:40:12,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:40:12,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:40:12,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:40:12,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:40:12,523 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:40:12,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [644332720] [2021-11-09 08:40:12,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [644332720] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:40:12,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:40:12,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-09 08:40:12,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107089331] [2021-11-09 08:40:12,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:40:12,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:40:12,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:40:12,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:40:12,525 INFO L87 Difference]: Start difference. First operand 1275 states and 1592 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:40:12,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:40:12,555 INFO L93 Difference]: Finished difference Result 1215 states and 1506 transitions. [2021-11-09 08:40:12,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:40:12,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-11-09 08:40:12,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:40:12,563 INFO L225 Difference]: With dead ends: 1215 [2021-11-09 08:40:12,563 INFO L226 Difference]: Without dead ends: 1215 [2021-11-09 08:40:12,564 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:40:12,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2021-11-09 08:40:12,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1215. [2021-11-09 08:40:12,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 775 states have (on average 1.9161290322580644) internal successors, (1485), 1204 states have internal predecessors, (1485), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-09 08:40:12,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1506 transitions. [2021-11-09 08:40:12,619 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1506 transitions. Word has length 22 [2021-11-09 08:40:12,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:40:12,621 INFO L470 AbstractCegarLoop]: Abstraction has 1215 states and 1506 transitions. [2021-11-09 08:40:12,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:40:12,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1506 transitions. [2021-11-09 08:40:12,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-09 08:40:12,622 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:40:12,622 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:40:12,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-09 08:40:12,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:40:12,837 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr38REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-09 08:40:12,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:40:12,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1053008550, now seen corresponding path program 1 times [2021-11-09 08:40:12,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:40:12,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [725032864] [2021-11-09 08:40:12,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:40:12,838 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:40:12,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:40:12,840 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:40:12,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-09 08:40:13,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:40:13,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:40:13,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:40:13,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:40:13,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:40:13,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:40:13,210 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:40:13,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [725032864] [2021-11-09 08:40:13,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [725032864] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:40:13,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:40:13,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-09 08:40:13,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378917665] [2021-11-09 08:40:13,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:40:13,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:40:13,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:40:13,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:40:13,212 INFO L87 Difference]: Start difference. First operand 1215 states and 1506 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:40:13,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:40:13,322 INFO L93 Difference]: Finished difference Result 1187 states and 1450 transitions. [2021-11-09 08:40:13,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:40:13,323 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-11-09 08:40:13,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:40:13,331 INFO L225 Difference]: With dead ends: 1187 [2021-11-09 08:40:13,332 INFO L226 Difference]: Without dead ends: 1187 [2021-11-09 08:40:13,332 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:40:13,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2021-11-09 08:40:13,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 1185. [2021-11-09 08:40:13,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185 states, 759 states have (on average 1.8801054018445322) internal successors, (1427), 1174 states have internal predecessors, (1427), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-09 08:40:13,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1448 transitions. [2021-11-09 08:40:13,361 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1448 transitions. Word has length 24 [2021-11-09 08:40:13,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:40:13,362 INFO L470 AbstractCegarLoop]: Abstraction has 1185 states and 1448 transitions. [2021-11-09 08:40:13,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:40:13,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1448 transitions. [2021-11-09 08:40:13,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-09 08:40:13,363 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:40:13,363 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:40:13,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-09 08:40:13,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:40:13,577 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr52REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-09 08:40:13,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:40:13,577 INFO L85 PathProgramCache]: Analyzing trace with hash 646849896, now seen corresponding path program 1 times [2021-11-09 08:40:13,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:40:13,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [635213881] [2021-11-09 08:40:13,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:40:13,578 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:40:13,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:40:13,579 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:40:13,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-09 08:40:13,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:40:13,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:40:13,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:40:13,877 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 [2021-11-09 08:40:14,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:40:14,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:40:14,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:40:14,217 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:40:14,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [635213881] [2021-11-09 08:40:14,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [635213881] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:40:14,218 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:40:14,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-09 08:40:14,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163719601] [2021-11-09 08:40:14,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:40:14,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:40:14,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:40:14,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:40:14,220 INFO L87 Difference]: Start difference. First operand 1185 states and 1448 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:40:16,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:40:16,512 INFO L93 Difference]: Finished difference Result 1656 states and 2041 transitions. [2021-11-09 08:40:16,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:40:16,520 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2021-11-09 08:40:16,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:40:16,528 INFO L225 Difference]: With dead ends: 1656 [2021-11-09 08:40:16,528 INFO L226 Difference]: Without dead ends: 1656 [2021-11-09 08:40:16,528 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:40:16,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2021-11-09 08:40:16,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 1181. [2021-11-09 08:40:16,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1181 states, 759 states have (on average 1.8695652173913044) internal successors, (1419), 1170 states have internal predecessors, (1419), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-09 08:40:16,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1440 transitions. [2021-11-09 08:40:16,560 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1440 transitions. Word has length 38 [2021-11-09 08:40:16,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:40:16,561 INFO L470 AbstractCegarLoop]: Abstraction has 1181 states and 1440 transitions. [2021-11-09 08:40:16,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:40:16,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1440 transitions. [2021-11-09 08:40:16,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-09 08:40:16,563 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:40:16,563 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:40:16,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-09 08:40:16,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:40:16,776 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr53REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-09 08:40:16,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:40:16,776 INFO L85 PathProgramCache]: Analyzing trace with hash 646849897, now seen corresponding path program 1 times [2021-11-09 08:40:16,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:40:16,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1841853839] [2021-11-09 08:40:16,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:40:16,777 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:40:16,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:40:16,778 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:40:16,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-09 08:40:17,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:40:17,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 08:40:17,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:40:17,091 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 [2021-11-09 08:40:17,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:40:17,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:40:18,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:40:18,014 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:40:18,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1841853839] [2021-11-09 08:40:18,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1841853839] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:40:18,015 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:40:18,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-09 08:40:18,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221915902] [2021-11-09 08:40:18,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:40:18,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:40:18,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:40:18,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:40:18,018 INFO L87 Difference]: Start difference. First operand 1181 states and 1440 transitions. Second operand has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:40:25,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:40:25,780 INFO L93 Difference]: Finished difference Result 1787 states and 2194 transitions. [2021-11-09 08:40:25,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 08:40:25,782 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2021-11-09 08:40:25,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:40:25,789 INFO L225 Difference]: With dead ends: 1787 [2021-11-09 08:40:25,789 INFO L226 Difference]: Without dead ends: 1787 [2021-11-09 08:40:25,789 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-09 08:40:25,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1787 states. [2021-11-09 08:40:25,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1787 to 1177. [2021-11-09 08:40:25,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 759 states have (on average 1.8590250329380764) internal successors, (1411), 1166 states have internal predecessors, (1411), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-09 08:40:25,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1432 transitions. [2021-11-09 08:40:25,818 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1432 transitions. Word has length 38 [2021-11-09 08:40:25,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:40:25,818 INFO L470 AbstractCegarLoop]: Abstraction has 1177 states and 1432 transitions. [2021-11-09 08:40:25,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:40:25,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1432 transitions. [2021-11-09 08:40:25,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-09 08:40:25,821 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:40:25,821 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:40:25,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-11-09 08:40:26,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:40:26,033 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-09 08:40:26,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:40:26,033 INFO L85 PathProgramCache]: Analyzing trace with hash -927296089, now seen corresponding path program 1 times [2021-11-09 08:40:26,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:40:26,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [695960634] [2021-11-09 08:40:26,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:40:26,034 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:40:26,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:40:26,035 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:40:26,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-09 08:40:26,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:40:26,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:40:26,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:40:26,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:40:26,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:40:26,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:40:26,757 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:40:26,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [695960634] [2021-11-09 08:40:26,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [695960634] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:40:26,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:40:26,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-09 08:40:26,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340725325] [2021-11-09 08:40:26,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:40:26,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:40:26,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:40:26,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:40:26,759 INFO L87 Difference]: Start difference. First operand 1177 states and 1432 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:40:26,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:40:26,824 INFO L93 Difference]: Finished difference Result 1165 states and 1412 transitions. [2021-11-09 08:40:26,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:40:26,825 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2021-11-09 08:40:26,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:40:26,834 INFO L225 Difference]: With dead ends: 1165 [2021-11-09 08:40:26,835 INFO L226 Difference]: Without dead ends: 1165 [2021-11-09 08:40:26,835 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:40:26,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2021-11-09 08:40:26,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 1165. [2021-11-09 08:40:26,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 747 states have (on average 1.8621151271753682) internal successors, (1391), 1154 states have internal predecessors, (1391), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-09 08:40:26,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1412 transitions. [2021-11-09 08:40:26,865 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1412 transitions. Word has length 56 [2021-11-09 08:40:26,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:40:26,865 INFO L470 AbstractCegarLoop]: Abstraction has 1165 states and 1412 transitions. [2021-11-09 08:40:26,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:40:26,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1412 transitions. [2021-11-09 08:40:26,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-09 08:40:26,872 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:40:26,873 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:40:26,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-09 08:40:27,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:40:27,087 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-09 08:40:27,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:40:27,087 INFO L85 PathProgramCache]: Analyzing trace with hash 548320627, now seen corresponding path program 1 times [2021-11-09 08:40:27,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:40:27,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1768334745] [2021-11-09 08:40:27,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:40:27,088 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:40:27,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:40:27,089 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:40:27,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-09 08:40:27,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:40:27,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 08:40:27,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:40:27,805 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 [2021-11-09 08:40:27,812 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 [2021-11-09 08:40:28,787 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-09 08:40:28,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2021-11-09 08:40:28,796 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-09 08:40:28,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 20 [2021-11-09 08:40:28,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:40:28,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:40:34,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:40:34,420 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:40:34,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1768334745] [2021-11-09 08:40:34,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1768334745] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:40:34,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:40:34,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-09 08:40:34,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204411830] [2021-11-09 08:40:34,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:40:34,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:40:34,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:40:34,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-09 08:40:34,423 INFO L87 Difference]: Start difference. First operand 1165 states and 1412 transitions. Second operand has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:40:52,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:40:52,137 INFO L93 Difference]: Finished difference Result 2114 states and 2669 transitions. [2021-11-09 08:40:52,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 08:40:52,139 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2021-11-09 08:40:52,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:40:52,148 INFO L225 Difference]: With dead ends: 2114 [2021-11-09 08:40:52,148 INFO L226 Difference]: Without dead ends: 2114 [2021-11-09 08:40:52,148 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=26, Invalid=28, Unknown=2, NotChecked=0, Total=56 [2021-11-09 08:40:52,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2114 states. [2021-11-09 08:40:52,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2114 to 1127. [2021-11-09 08:40:52,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 747 states have (on average 1.8112449799196788) internal successors, (1353), 1116 states have internal predecessors, (1353), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-09 08:40:52,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1374 transitions. [2021-11-09 08:40:52,177 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1374 transitions. Word has length 64 [2021-11-09 08:40:52,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:40:52,178 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 1374 transitions. [2021-11-09 08:40:52,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:40:52,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1374 transitions. [2021-11-09 08:40:52,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-09 08:40:52,179 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:40:52,179 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:40:52,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-09 08:40:52,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:40:52,395 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr76REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-09 08:40:52,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:40:52,395 INFO L85 PathProgramCache]: Analyzing trace with hash -812720204, now seen corresponding path program 1 times [2021-11-09 08:40:52,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:40:52,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1465362358] [2021-11-09 08:40:52,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:40:52,396 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:40:52,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:40:52,397 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:40:52,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-09 08:40:52,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:40:52,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 08:40:52,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:40:53,035 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 [2021-11-09 08:40:53,056 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 [2021-11-09 08:40:53,102 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 [2021-11-09 08:40:53,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:40:53,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:40:53,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:40:53,286 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:40:53,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1465362358] [2021-11-09 08:40:53,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1465362358] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:40:53,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:40:53,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-09 08:40:53,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372803364] [2021-11-09 08:40:53,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:40:53,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:40:53,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:40:53,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:40:53,288 INFO L87 Difference]: Start difference. First operand 1127 states and 1374 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:40:56,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:40:56,525 INFO L93 Difference]: Finished difference Result 1126 states and 1373 transitions. [2021-11-09 08:40:56,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 08:40:56,526 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-11-09 08:40:56,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:40:56,532 INFO L225 Difference]: With dead ends: 1126 [2021-11-09 08:40:56,533 INFO L226 Difference]: Without dead ends: 1126 [2021-11-09 08:40:56,533 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:40:56,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2021-11-09 08:40:56,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 1126. [2021-11-09 08:40:56,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 747 states have (on average 1.8099062918340028) internal successors, (1352), 1115 states have internal predecessors, (1352), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-09 08:40:56,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1373 transitions. [2021-11-09 08:40:56,559 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1373 transitions. Word has length 69 [2021-11-09 08:40:56,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:40:56,560 INFO L470 AbstractCegarLoop]: Abstraction has 1126 states and 1373 transitions. [2021-11-09 08:40:56,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:40:56,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1373 transitions. [2021-11-09 08:40:56,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-09 08:40:56,561 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:40:56,561 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:40:56,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-09 08:40:56,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:40:56,778 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr77REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-09 08:40:56,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:40:56,779 INFO L85 PathProgramCache]: Analyzing trace with hash -812720203, now seen corresponding path program 1 times [2021-11-09 08:40:56,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:40:56,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [114613500] [2021-11-09 08:40:56,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:40:56,780 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:40:56,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:40:56,781 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:40:56,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-09 08:40:57,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:40:57,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 08:40:57,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:40:57,446 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 [2021-11-09 08:40:57,479 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 [2021-11-09 08:40:57,497 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 [2021-11-09 08:40:57,573 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 [2021-11-09 08:40:57,578 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 [2021-11-09 08:40:57,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:40:57,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:40:57,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:40:57,992 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:40:57,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [114613500] [2021-11-09 08:40:57,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [114613500] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:40:57,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:40:57,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-09 08:40:57,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372564594] [2021-11-09 08:40:57,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 08:40:57,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:40:57,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 08:40:57,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:40:57,994 INFO L87 Difference]: Start difference. First operand 1126 states and 1373 transitions. Second operand has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:41:07,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:41:07,329 INFO L93 Difference]: Finished difference Result 1125 states and 1372 transitions. [2021-11-09 08:41:07,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 08:41:07,330 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-11-09 08:41:07,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:41:07,335 INFO L225 Difference]: With dead ends: 1125 [2021-11-09 08:41:07,335 INFO L226 Difference]: Without dead ends: 1125 [2021-11-09 08:41:07,335 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-09 08:41:07,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2021-11-09 08:41:07,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1125. [2021-11-09 08:41:07,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1125 states, 746 states have (on average 1.8109919571045576) internal successors, (1351), 1114 states have internal predecessors, (1351), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-09 08:41:07,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1372 transitions. [2021-11-09 08:41:07,356 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1372 transitions. Word has length 69 [2021-11-09 08:41:07,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:41:07,356 INFO L470 AbstractCegarLoop]: Abstraction has 1125 states and 1372 transitions. [2021-11-09 08:41:07,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:41:07,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1372 transitions. [2021-11-09 08:41:07,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-09 08:41:07,358 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:41:07,358 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:41:07,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-09 08:41:07,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:41:07,573 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-09 08:41:07,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:41:07,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1139648005, now seen corresponding path program 1 times [2021-11-09 08:41:07,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:41:07,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1782066488] [2021-11-09 08:41:07,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:41:07,575 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:41:07,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:41:07,576 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:41:07,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-09 08:41:08,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:41:08,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:41:08,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:41:08,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:41:08,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:41:08,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:41:08,488 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:41:08,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1782066488] [2021-11-09 08:41:08,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1782066488] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:41:08,488 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:41:08,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-09 08:41:08,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741860203] [2021-11-09 08:41:08,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:41:08,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:41:08,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:41:08,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:41:08,493 INFO L87 Difference]: Start difference. First operand 1125 states and 1372 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 08:41:08,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:41:08,647 INFO L93 Difference]: Finished difference Result 1135 states and 1385 transitions. [2021-11-09 08:41:08,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 08:41:08,649 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 77 [2021-11-09 08:41:08,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:41:08,661 INFO L225 Difference]: With dead ends: 1135 [2021-11-09 08:41:08,661 INFO L226 Difference]: Without dead ends: 1135 [2021-11-09 08:41:08,664 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:41:08,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2021-11-09 08:41:08,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 1135. [2021-11-09 08:41:08,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 754 states have (on average 1.8076923076923077) internal successors, (1363), 1123 states have internal predecessors, (1363), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 6 states have call predecessors, (11), 10 states have call successors, (11) [2021-11-09 08:41:08,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 1385 transitions. [2021-11-09 08:41:08,696 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 1385 transitions. Word has length 77 [2021-11-09 08:41:08,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:41:08,697 INFO L470 AbstractCegarLoop]: Abstraction has 1135 states and 1385 transitions. [2021-11-09 08:41:08,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 08:41:08,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 1385 transitions. [2021-11-09 08:41:08,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-09 08:41:08,699 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:41:08,699 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:41:08,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-09 08:41:08,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:41:08,919 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-09 08:41:08,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:41:08,919 INFO L85 PathProgramCache]: Analyzing trace with hash 2077664763, now seen corresponding path program 1 times [2021-11-09 08:41:08,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:41:08,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [95980096] [2021-11-09 08:41:08,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:41:08,920 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:41:08,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:41:08,922 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:41:08,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-09 08:41:09,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:41:09,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 08:41:09,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:41:09,737 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:41:09,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:41:10,123 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:41:10,124 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:41:10,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [95980096] [2021-11-09 08:41:10,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [95980096] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 08:41:10,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:41:10,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-09 08:41:10,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197665960] [2021-11-09 08:41:10,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 08:41:10,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:41:10,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 08:41:10,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-09 08:41:10,126 INFO L87 Difference]: Start difference. First operand 1135 states and 1385 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 08:41:10,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:41:10,728 INFO L93 Difference]: Finished difference Result 1149 states and 1403 transitions. [2021-11-09 08:41:10,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 08:41:10,730 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 79 [2021-11-09 08:41:10,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:41:10,738 INFO L225 Difference]: With dead ends: 1149 [2021-11-09 08:41:10,738 INFO L226 Difference]: Without dead ends: 1145 [2021-11-09 08:41:10,739 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-09 08:41:10,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2021-11-09 08:41:10,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 1141. [2021-11-09 08:41:10,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 760 states have (on average 1.8039473684210525) internal successors, (1371), 1129 states have internal predecessors, (1371), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 6 states have call predecessors, (11), 10 states have call successors, (11) [2021-11-09 08:41:10,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 1393 transitions. [2021-11-09 08:41:10,770 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 1393 transitions. Word has length 79 [2021-11-09 08:41:10,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:41:10,770 INFO L470 AbstractCegarLoop]: Abstraction has 1141 states and 1393 transitions. [2021-11-09 08:41:10,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 08:41:10,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 1393 transitions. [2021-11-09 08:41:10,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-09 08:41:10,772 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:41:10,772 INFO L513 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:41:10,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-09 08:41:10,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:41:10,994 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-09 08:41:10,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:41:10,994 INFO L85 PathProgramCache]: Analyzing trace with hash -931774981, now seen corresponding path program 2 times [2021-11-09 08:41:10,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:41:10,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1678958728] [2021-11-09 08:41:10,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 08:41:10,995 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:41:10,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:41:10,996 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:41:10,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-09 08:41:11,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 08:41:11,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:41:11,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 08:41:11,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:41:12,105 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:41:12,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:41:12,707 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:41:12,707 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:41:12,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1678958728] [2021-11-09 08:41:12,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1678958728] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 08:41:12,708 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:41:12,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-09 08:41:12,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431180226] [2021-11-09 08:41:12,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 08:41:12,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:41:12,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 08:41:12,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-09 08:41:12,710 INFO L87 Difference]: Start difference. First operand 1141 states and 1393 transitions. Second operand has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 08:41:14,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:41:14,365 INFO L93 Difference]: Finished difference Result 1169 states and 1431 transitions. [2021-11-09 08:41:14,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-09 08:41:14,366 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 83 [2021-11-09 08:41:14,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:41:14,373 INFO L225 Difference]: With dead ends: 1169 [2021-11-09 08:41:14,373 INFO L226 Difference]: Without dead ends: 1165 [2021-11-09 08:41:14,374 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-09 08:41:14,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2021-11-09 08:41:14,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 1153. [2021-11-09 08:41:14,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 772 states have (on average 1.7966321243523315) internal successors, (1387), 1141 states have internal predecessors, (1387), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 6 states have call predecessors, (11), 10 states have call successors, (11) [2021-11-09 08:41:14,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1409 transitions. [2021-11-09 08:41:14,398 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1409 transitions. Word has length 83 [2021-11-09 08:41:14,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:41:14,399 INFO L470 AbstractCegarLoop]: Abstraction has 1153 states and 1409 transitions. [2021-11-09 08:41:14,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 08:41:14,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1409 transitions. [2021-11-09 08:41:14,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-09 08:41:14,400 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:41:14,400 INFO L513 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:41:14,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-09 08:41:14,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:41:14,614 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-09 08:41:14,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:41:14,615 INFO L85 PathProgramCache]: Analyzing trace with hash -351179269, now seen corresponding path program 3 times [2021-11-09 08:41:14,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:41:14,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720477689] [2021-11-09 08:41:14,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 08:41:14,616 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:41:14,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:41:14,617 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:41:14,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-09 08:41:15,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-09 08:41:15,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:41:15,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-09 08:41:15,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:41:16,550 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:41:16,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:41:18,737 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:41:18,737 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:41:18,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [720477689] [2021-11-09 08:41:18,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [720477689] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 08:41:18,738 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:41:18,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-09 08:41:18,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113764944] [2021-11-09 08:41:18,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-09 08:41:18,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:41:18,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-09 08:41:18,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-09 08:41:18,741 INFO L87 Difference]: Start difference. First operand 1153 states and 1409 transitions. Second operand has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 08:41:28,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:41:28,760 INFO L93 Difference]: Finished difference Result 1209 states and 1493 transitions. [2021-11-09 08:41:28,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-09 08:41:28,761 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 91 [2021-11-09 08:41:28,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:41:28,769 INFO L225 Difference]: With dead ends: 1209 [2021-11-09 08:41:28,769 INFO L226 Difference]: Without dead ends: 1203 [2021-11-09 08:41:28,771 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=1377, Invalid=2783, Unknown=0, NotChecked=0, Total=4160 [2021-11-09 08:41:28,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2021-11-09 08:41:28,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1177. [2021-11-09 08:41:28,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 796 states have (on average 1.7814070351758795) internal successors, (1418), 1165 states have internal predecessors, (1418), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 6 states have call predecessors, (11), 10 states have call successors, (11) [2021-11-09 08:41:28,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1440 transitions. [2021-11-09 08:41:28,799 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1440 transitions. Word has length 91 [2021-11-09 08:41:28,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:41:28,799 INFO L470 AbstractCegarLoop]: Abstraction has 1177 states and 1440 transitions. [2021-11-09 08:41:28,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 08:41:28,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1440 transitions. [2021-11-09 08:41:28,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-09 08:41:28,801 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:41:28,801 INFO L513 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:41:28,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-09 08:41:29,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:41:29,021 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-09 08:41:29,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:41:29,022 INFO L85 PathProgramCache]: Analyzing trace with hash 2109197819, now seen corresponding path program 4 times [2021-11-09 08:41:29,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:41:29,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [653780014] [2021-11-09 08:41:29,023 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 08:41:29,023 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:41:29,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:41:29,023 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:41:29,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-09 08:41:29,781 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 08:41:29,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:41:29,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-09 08:41:29,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:41:31,261 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:41:31,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:41:36,046 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:41:36,046 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:41:36,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [653780014] [2021-11-09 08:41:36,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [653780014] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 08:41:36,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:41:36,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-09 08:41:36,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205305259] [2021-11-09 08:41:36,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-09 08:41:36,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:41:36,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-09 08:41:36,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-09 08:41:36,050 INFO L87 Difference]: Start difference. First operand 1177 states and 1440 transitions. Second operand has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 08:41:52,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:41:52,169 INFO L93 Difference]: Finished difference Result 1269 states and 1560 transitions. [2021-11-09 08:41:52,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-09 08:41:52,170 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 107 [2021-11-09 08:41:52,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:41:52,178 INFO L225 Difference]: With dead ends: 1269 [2021-11-09 08:41:52,178 INFO L226 Difference]: Without dead ends: 1265 [2021-11-09 08:41:52,185 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=4503, Invalid=14679, Unknown=0, NotChecked=0, Total=19182 [2021-11-09 08:41:52,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1265 states. [2021-11-09 08:41:52,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1265 to 1207. [2021-11-09 08:41:52,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1207 states, 826 states have (on average 1.7723970944309928) internal successors, (1464), 1195 states have internal predecessors, (1464), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 6 states have call predecessors, (11), 10 states have call successors, (11) [2021-11-09 08:41:52,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 1486 transitions. [2021-11-09 08:41:52,213 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 1486 transitions. Word has length 107 [2021-11-09 08:41:52,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:41:52,214 INFO L470 AbstractCegarLoop]: Abstraction has 1207 states and 1486 transitions. [2021-11-09 08:41:52,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 08:41:52,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 1486 transitions. [2021-11-09 08:41:52,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-09 08:41:52,216 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:41:52,216 INFO L513 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:41:52,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-09 08:41:52,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:41:52,442 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-09 08:41:52,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:41:52,443 INFO L85 PathProgramCache]: Analyzing trace with hash -736370181, now seen corresponding path program 5 times [2021-11-09 08:41:52,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:41:52,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1594835507] [2021-11-09 08:41:52,444 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 08:41:52,444 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:41:52,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:41:52,445 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:41:52,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0d0407-8733-4221-ace1-4be02ea5151f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-09 08:41:54,205 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-09 08:41:54,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:41:54,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-09 08:41:54,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:41:54,260 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 [2021-11-09 08:41:54,512 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-09 08:41:54,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 27 [2021-11-09 08:41:54,562 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 26 treesize of output 22 [2021-11-09 08:41:54,705 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 36 treesize of output 24