./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext3-properties/dll_nullified-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/dll_nullified-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF --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 3b4637ab5710a1ca22a981e8047278048fbbf856825d3649b2cb9d48de11d175 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:23:59,267 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:23:59,271 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:23:59,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:23:59,340 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:23:59,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:23:59,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:23:59,348 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:23:59,351 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:23:59,352 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:23:59,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:23:59,355 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:23:59,356 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:23:59,358 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:23:59,360 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:23:59,362 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:23:59,363 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:23:59,365 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:23:59,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:23:59,371 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:23:59,374 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:23:59,379 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:23:59,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:23:59,382 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:23:59,387 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:23:59,388 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:23:59,389 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:23:59,390 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:23:59,391 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:23:59,400 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:23:59,401 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:23:59,402 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:23:59,405 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:23:59,407 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:23:59,408 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:23:59,409 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:23:59,410 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:23:59,410 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:23:59,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:23:59,412 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:23:59,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:23:59,414 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-20 07:23:59,477 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:23:59,478 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:23:59,479 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:23:59,479 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:23:59,489 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:23:59,489 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:23:59,490 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:23:59,490 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:23:59,490 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:23:59,491 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:23:59,491 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:23:59,491 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 07:23:59,492 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:23:59,492 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:23:59,492 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:23:59,492 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 07:23:59,493 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 07:23:59,493 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 07:23:59,493 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:23:59,493 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 07:23:59,494 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:23:59,494 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:23:59,494 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:23:59,494 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:23:59,495 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:23:59,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:23:59,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:23:59,496 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:23:59,496 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:23:59,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 07:23:59,496 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:23:59,497 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_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b4637ab5710a1ca22a981e8047278048fbbf856825d3649b2cb9d48de11d175 [2021-11-20 07:23:59,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:23:59,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:23:59,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:23:59,857 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:23:59,858 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:23:59,860 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/list-ext3-properties/dll_nullified-2.i [2021-11-20 07:23:59,977 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/data/7d7280acc/cb06028634654b8bbb6719c04265b0d1/FLAG18ee243bf [2021-11-20 07:24:00,585 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:24:00,585 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/sv-benchmarks/c/list-ext3-properties/dll_nullified-2.i [2021-11-20 07:24:00,608 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/data/7d7280acc/cb06028634654b8bbb6719c04265b0d1/FLAG18ee243bf [2021-11-20 07:24:00,863 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/data/7d7280acc/cb06028634654b8bbb6719c04265b0d1 [2021-11-20 07:24:00,866 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:24:00,868 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:24:00,869 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:24:00,870 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:24:00,874 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:24:00,875 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:24:00" (1/1) ... [2021-11-20 07:24:00,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34da77e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:24:00, skipping insertion in model container [2021-11-20 07:24:00,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:24:00" (1/1) ... [2021-11-20 07:24:00,886 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:24:00,939 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:24:01,388 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/sv-benchmarks/c/list-ext3-properties/dll_nullified-2.i[23974,23987] [2021-11-20 07:24:01,398 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:24:01,425 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:24:01,506 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/sv-benchmarks/c/list-ext3-properties/dll_nullified-2.i[23974,23987] [2021-11-20 07:24:01,508 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:24:01,551 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:24:01,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:24:01 WrapperNode [2021-11-20 07:24:01,554 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:24:01,556 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:24:01,556 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:24:01,556 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:24:01,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:24:01" (1/1) ... [2021-11-20 07:24:01,609 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:24:01" (1/1) ... [2021-11-20 07:24:01,651 INFO L137 Inliner]: procedures = 122, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 111 [2021-11-20 07:24:01,652 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:24:01,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:24:01,653 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:24:01,654 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:24:01,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:24:01" (1/1) ... [2021-11-20 07:24:01,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:24:01" (1/1) ... [2021-11-20 07:24:01,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:24:01" (1/1) ... [2021-11-20 07:24:01,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:24:01" (1/1) ... [2021-11-20 07:24:01,695 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:24:01" (1/1) ... [2021-11-20 07:24:01,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:24:01" (1/1) ... [2021-11-20 07:24:01,714 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:24:01" (1/1) ... [2021-11-20 07:24:01,724 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:24:01,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:24:01,729 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:24:01,730 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:24:01,731 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:24:01" (1/1) ... [2021-11-20 07:24:01,741 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:24:01,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:24:01,775 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:24:01,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:24:01,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 07:24:01,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 07:24:01,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 07:24:01,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:24:01,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 07:24:01,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 07:24:01,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 07:24:01,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 07:24:01,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:24:01,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:24:01,958 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:24:01,972 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:24:02,433 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:24:02,442 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:24:02,443 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-20 07:24:02,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:24:02 BoogieIcfgContainer [2021-11-20 07:24:02,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:24:02,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:24:02,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:24:02,452 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:24:02,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:24:00" (1/3) ... [2021-11-20 07:24:02,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d0cca4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:24:02, skipping insertion in model container [2021-11-20 07:24:02,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:24:01" (2/3) ... [2021-11-20 07:24:02,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d0cca4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:24:02, skipping insertion in model container [2021-11-20 07:24:02,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:24:02" (3/3) ... [2021-11-20 07:24:02,456 INFO L111 eAbstractionObserver]: Analyzing ICFG dll_nullified-2.i [2021-11-20 07:24:02,463 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:24:02,463 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 35 error locations. [2021-11-20 07:24:02,540 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:24:02,556 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 [2021-11-20 07:24:02,556 INFO L340 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2021-11-20 07:24:02,584 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 49 states have (on average 2.0) internal successors, (98), 84 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:24:02,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-20 07:24:02,610 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:24:02,611 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-20 07:24:02,612 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-20 07:24:02,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:24:02,619 INFO L85 PathProgramCache]: Analyzing trace with hash 28699851, now seen corresponding path program 1 times [2021-11-20 07:24:02,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:24:02,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549919905] [2021-11-20 07:24:02,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:24:02,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:24:02,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:24:02,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:24:02,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:24:02,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549919905] [2021-11-20 07:24:02,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549919905] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:24:02,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:24:02,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 07:24:02,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792338968] [2021-11-20 07:24:02,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:24:02,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:24:02,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:24:02,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:24:02,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:24:02,937 INFO L87 Difference]: Start difference. First operand has 85 states, 49 states have (on average 2.0) internal successors, (98), 84 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:24:03,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:24:03,177 INFO L93 Difference]: Finished difference Result 141 states and 157 transitions. [2021-11-20 07:24:03,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:24:03,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-20 07:24:03,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:24:03,195 INFO L225 Difference]: With dead ends: 141 [2021-11-20 07:24:03,195 INFO L226 Difference]: Without dead ends: 136 [2021-11-20 07:24:03,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:24:03,202 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 84 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:24:03,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 164 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:24:03,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-11-20 07:24:03,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 77. [2021-11-20 07:24:03,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 47 states have (on average 1.8085106382978724) internal successors, (85), 76 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:24:03,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2021-11-20 07:24:03,252 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 5 [2021-11-20 07:24:03,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:24:03,253 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2021-11-20 07:24:03,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:24:03,253 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2021-11-20 07:24:03,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-20 07:24:03,254 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:24:03,254 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-20 07:24:03,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 07:24:03,255 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-20 07:24:03,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:24:03,256 INFO L85 PathProgramCache]: Analyzing trace with hash 28699852, now seen corresponding path program 1 times [2021-11-20 07:24:03,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:24:03,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265921109] [2021-11-20 07:24:03,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:24:03,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:24:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:24:03,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:24:03,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:24:03,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265921109] [2021-11-20 07:24:03,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265921109] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:24:03,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:24:03,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 07:24:03,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216856305] [2021-11-20 07:24:03,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:24:03,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:24:03,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:24:03,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:24:03,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:24:03,334 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:24:03,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:24:03,502 INFO L93 Difference]: Finished difference Result 131 states and 146 transitions. [2021-11-20 07:24:03,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:24:03,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-20 07:24:03,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:24:03,505 INFO L225 Difference]: With dead ends: 131 [2021-11-20 07:24:03,505 INFO L226 Difference]: Without dead ends: 131 [2021-11-20 07:24:03,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:24:03,508 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 76 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:24:03,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 165 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:24:03,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-11-20 07:24:03,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 72. [2021-11-20 07:24:03,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 47 states have (on average 1.702127659574468) internal successors, (80), 71 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:24:03,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2021-11-20 07:24:03,536 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 5 [2021-11-20 07:24:03,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:24:03,536 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2021-11-20 07:24:03,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:24:03,537 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2021-11-20 07:24:03,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-20 07:24:03,537 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:24:03,537 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-20 07:24:03,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 07:24:03,538 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-20 07:24:03,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:24:03,539 INFO L85 PathProgramCache]: Analyzing trace with hash 889665583, now seen corresponding path program 1 times [2021-11-20 07:24:03,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:24:03,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769364577] [2021-11-20 07:24:03,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:24:03,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:24:03,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:24:03,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:24:03,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:24:03,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769364577] [2021-11-20 07:24:03,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769364577] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:24:03,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:24:03,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 07:24:03,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295209908] [2021-11-20 07:24:03,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:24:03,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:24:03,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:24:03,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:24:03,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:24:03,618 INFO L87 Difference]: Start difference. First operand 72 states and 80 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:24:03,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:24:03,638 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2021-11-20 07:24:03,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:24:03,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-20 07:24:03,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:24:03,643 INFO L225 Difference]: With dead ends: 84 [2021-11-20 07:24:03,643 INFO L226 Difference]: Without dead ends: 84 [2021-11-20 07:24:03,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:24:03,652 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 12 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:24:03,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 154 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:24:03,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-11-20 07:24:03,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 73. [2021-11-20 07:24:03,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 48 states have (on average 1.6875) internal successors, (81), 72 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:24:03,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 81 transitions. [2021-11-20 07:24:03,662 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 81 transitions. Word has length 6 [2021-11-20 07:24:03,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:24:03,662 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 81 transitions. [2021-11-20 07:24:03,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:24:03,663 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 81 transitions. [2021-11-20 07:24:03,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 07:24:03,664 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:24:03,664 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:24:03,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 07:24:03,664 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-20 07:24:03,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:24:03,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1228392914, now seen corresponding path program 1 times [2021-11-20 07:24:03,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:24:03,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496689857] [2021-11-20 07:24:03,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:24:03,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:24:03,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:24:03,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:24:03,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:24:03,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496689857] [2021-11-20 07:24:03,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496689857] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:24:03,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:24:03,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 07:24:03,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213995201] [2021-11-20 07:24:03,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:24:03,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:24:03,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:24:03,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:24:03,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:24:03,802 INFO L87 Difference]: Start difference. First operand 73 states and 81 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:24:03,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:24:03,820 INFO L93 Difference]: Finished difference Result 81 states and 89 transitions. [2021-11-20 07:24:03,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:24:03,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-20 07:24:03,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:24:03,822 INFO L225 Difference]: With dead ends: 81 [2021-11-20 07:24:03,823 INFO L226 Difference]: Without dead ends: 81 [2021-11-20 07:24:03,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:24:03,825 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 1 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:24:03,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 149 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:24:03,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-11-20 07:24:03,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2021-11-20 07:24:03,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 55 states have (on average 1.6) internal successors, (88), 79 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:24:03,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2021-11-20 07:24:03,834 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 11 [2021-11-20 07:24:03,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:24:03,834 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2021-11-20 07:24:03,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:24:03,835 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2021-11-20 07:24:03,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 07:24:03,836 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:24:03,836 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:24:03,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 07:24:03,836 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-20 07:24:03,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:24:03,837 INFO L85 PathProgramCache]: Analyzing trace with hash -91353250, now seen corresponding path program 1 times [2021-11-20 07:24:03,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:24:03,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659810699] [2021-11-20 07:24:03,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:24:03,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:24:03,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:24:03,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:24:03,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:24:03,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659810699] [2021-11-20 07:24:03,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659810699] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:24:03,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:24:03,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 07:24:03,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254005529] [2021-11-20 07:24:03,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:24:03,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:24:03,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:24:03,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:24:03,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:24:03,972 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:24:04,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:24:04,257 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2021-11-20 07:24:04,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:24:04,258 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-20 07:24:04,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:24:04,262 INFO L225 Difference]: With dead ends: 101 [2021-11-20 07:24:04,262 INFO L226 Difference]: Without dead ends: 101 [2021-11-20 07:24:04,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-20 07:24:04,272 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 255 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:24:04,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 93 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:24:04,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-11-20 07:24:04,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 74. [2021-11-20 07:24:04,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 58 states have (on average 1.4655172413793103) internal successors, (85), 73 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:24:04,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 85 transitions. [2021-11-20 07:24:04,289 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 85 transitions. Word has length 15 [2021-11-20 07:24:04,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:24:04,289 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 85 transitions. [2021-11-20 07:24:04,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:24:04,290 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 85 transitions. [2021-11-20 07:24:04,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 07:24:04,291 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:24:04,291 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:24:04,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 07:24:04,292 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-20 07:24:04,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:24:04,293 INFO L85 PathProgramCache]: Analyzing trace with hash -91353249, now seen corresponding path program 1 times [2021-11-20 07:24:04,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:24:04,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246837738] [2021-11-20 07:24:04,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:24:04,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:24:04,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:24:04,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:24:04,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:24:04,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246837738] [2021-11-20 07:24:04,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246837738] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:24:04,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93734097] [2021-11-20 07:24:04,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:24:04,407 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:24:04,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:24:04,413 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:24:04,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 07:24:04,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:24:04,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 07:24:04,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:24:04,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:24:04,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:24:04,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:24:04,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93734097] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:24:04,758 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:24:04,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2021-11-20 07:24:04,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761454287] [2021-11-20 07:24:04,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:24:04,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:24:04,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:24:04,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:24:04,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:24:04,761 INFO L87 Difference]: Start difference. First operand 74 states and 85 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:24:04,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:24:04,787 INFO L93 Difference]: Finished difference Result 98 states and 111 transitions. [2021-11-20 07:24:04,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:24:04,788 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-20 07:24:04,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:24:04,789 INFO L225 Difference]: With dead ends: 98 [2021-11-20 07:24:04,789 INFO L226 Difference]: Without dead ends: 98 [2021-11-20 07:24:04,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:24:04,791 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 44 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:24:04,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 213 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:24:04,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-11-20 07:24:04,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2021-11-20 07:24:04,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 80 states have (on average 1.3875) internal successors, (111), 95 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:24:04,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2021-11-20 07:24:04,800 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 15 [2021-11-20 07:24:04,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:24:04,801 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2021-11-20 07:24:04,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:24:04,801 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2021-11-20 07:24:04,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 07:24:04,802 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:24:04,803 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-20 07:24:04,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 07:24:05,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:24:05,025 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-20 07:24:05,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:24:05,026 INFO L85 PathProgramCache]: Analyzing trace with hash 965941252, now seen corresponding path program 1 times [2021-11-20 07:24:05,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:24:05,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905029689] [2021-11-20 07:24:05,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:24:05,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:24:05,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:24:05,219 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:24:05,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:24:05,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905029689] [2021-11-20 07:24:05,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905029689] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:24:05,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799147596] [2021-11-20 07:24:05,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:24:05,226 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:24:05,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:24:05,229 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:24:05,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 07:24:05,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:24:05,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-20 07:24:05,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:24:05,392 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 [2021-11-20 07:24:05,637 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 07:24:05,637 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 22 treesize of output 24 [2021-11-20 07:24:05,655 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 07:24:05,656 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 21 treesize of output 21 [2021-11-20 07:24:05,984 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:24:05,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:24:06,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2021-11-20 07:24:06,593 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:24:06,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799147596] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:24:06,594 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:24:06,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 11 [2021-11-20 07:24:06,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764529947] [2021-11-20 07:24:06,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:24:06,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 07:24:06,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:24:06,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 07:24:06,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-20 07:24:06,599 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand has 12 states, 11 states have (on average 5.090909090909091) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:24:06,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:24:06,883 INFO L93 Difference]: Finished difference Result 198 states and 224 transitions. [2021-11-20 07:24:06,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:24:06,884 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.090909090909091) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-20 07:24:06,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:24:06,886 INFO L225 Difference]: With dead ends: 198 [2021-11-20 07:24:06,886 INFO L226 Difference]: Without dead ends: 198 [2021-11-20 07:24:06,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-11-20 07:24:06,888 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 613 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 116 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:24:06,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [613 Valid, 232 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 116 Unchecked, 0.1s Time] [2021-11-20 07:24:06,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-11-20 07:24:06,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 118. [2021-11-20 07:24:06,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 102 states have (on average 1.3235294117647058) internal successors, (135), 117 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:24:06,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 135 transitions. [2021-11-20 07:24:06,899 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 135 transitions. Word has length 20 [2021-11-20 07:24:06,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:24:06,899 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 135 transitions. [2021-11-20 07:24:06,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.090909090909091) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:24:06,900 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 135 transitions. [2021-11-20 07:24:06,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-20 07:24:06,901 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:24:06,902 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2021-11-20 07:24:06,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 07:24:07,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:24:07,130 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-20 07:24:07,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:24:07,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1717059603, now seen corresponding path program 1 times [2021-11-20 07:24:07,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:24:07,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575474741] [2021-11-20 07:24:07,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:24:07,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:24:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:24:07,264 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:24:07,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:24:07,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575474741] [2021-11-20 07:24:07,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575474741] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:24:07,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889186344] [2021-11-20 07:24:07,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:24:07,265 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:24:07,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:24:07,281 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:24:07,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 07:24:07,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:24:07,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-20 07:24:07,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:24:07,416 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 [2021-11-20 07:24:07,557 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 07:24:07,557 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 22 treesize of output 24 [2021-11-20 07:24:07,571 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 07:24:07,571 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 21 treesize of output 21 [2021-11-20 07:24:07,763 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:24:07,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:24:08,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2021-11-20 07:24:08,289 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:24:08,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889186344] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:24:08,290 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:24:08,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 11 [2021-11-20 07:24:08,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162023395] [2021-11-20 07:24:08,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:24:08,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 07:24:08,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:24:08,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 07:24:08,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-20 07:24:08,293 INFO L87 Difference]: Start difference. First operand 118 states and 135 transitions. Second operand has 12 states, 11 states have (on average 6.181818181818182) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:24:08,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:24:08,488 INFO L93 Difference]: Finished difference Result 142 states and 158 transitions. [2021-11-20 07:24:08,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:24:08,489 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.181818181818182) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-20 07:24:08,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:24:08,491 INFO L225 Difference]: With dead ends: 142 [2021-11-20 07:24:08,491 INFO L226 Difference]: Without dead ends: 142 [2021-11-20 07:24:08,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2021-11-20 07:24:08,493 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 413 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 84 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:24:08,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [413 Valid, 114 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 53 Invalid, 0 Unknown, 84 Unchecked, 0.1s Time] [2021-11-20 07:24:08,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-11-20 07:24:08,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 95. [2021-11-20 07:24:08,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 80 states have (on average 1.35) internal successors, (108), 94 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:24:08,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 108 transitions. [2021-11-20 07:24:08,501 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 108 transitions. Word has length 30 [2021-11-20 07:24:08,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:24:08,502 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 108 transitions. [2021-11-20 07:24:08,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.181818181818182) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:24:08,502 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 108 transitions. [2021-11-20 07:24:08,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-20 07:24:08,504 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:24:08,504 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2021-11-20 07:24:08,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 07:24:08,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:24:08,718 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-20 07:24:08,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:24:08,718 INFO L85 PathProgramCache]: Analyzing trace with hash -671675920, now seen corresponding path program 2 times [2021-11-20 07:24:08,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:24:08,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265765561] [2021-11-20 07:24:08,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:24:08,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:24:08,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:24:08,827 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 38 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-20 07:24:08,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:24:08,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265765561] [2021-11-20 07:24:08,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265765561] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:24:08,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45589823] [2021-11-20 07:24:08,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 07:24:08,828 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:24:08,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:24:08,834 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:24:08,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 07:24:08,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 07:24:08,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:24:08,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 07:24:08,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:24:09,134 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:24:09,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:24:09,290 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:24:09,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45589823] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:24:09,291 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:24:09,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 9 [2021-11-20 07:24:09,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565717382] [2021-11-20 07:24:09,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:24:09,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 07:24:09,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:24:09,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 07:24:09,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-20 07:24:09,295 INFO L87 Difference]: Start difference. First operand 95 states and 108 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:24:09,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:24:09,476 INFO L93 Difference]: Finished difference Result 105 states and 115 transitions. [2021-11-20 07:24:09,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 07:24:09,477 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-20 07:24:09,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:24:09,478 INFO L225 Difference]: With dead ends: 105 [2021-11-20 07:24:09,479 INFO L226 Difference]: Without dead ends: 105 [2021-11-20 07:24:09,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-11-20 07:24:09,482 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 172 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:24:09,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 229 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:24:09,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-11-20 07:24:09,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2021-11-20 07:24:09,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 90 states have (on average 1.2777777777777777) internal successors, (115), 104 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:24:09,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 115 transitions. [2021-11-20 07:24:09,493 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 115 transitions. Word has length 42 [2021-11-20 07:24:09,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:24:09,495 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 115 transitions. [2021-11-20 07:24:09,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:24:09,496 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 115 transitions. [2021-11-20 07:24:09,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-20 07:24:09,502 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:24:09,502 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:24:09,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 07:24:09,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:24:09,713 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-20 07:24:09,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:24:09,714 INFO L85 PathProgramCache]: Analyzing trace with hash -719682373, now seen corresponding path program 1 times [2021-11-20 07:24:09,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:24:09,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711146051] [2021-11-20 07:24:09,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:24:09,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:24:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:24:09,861 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-20 07:24:09,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:24:09,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711146051] [2021-11-20 07:24:09,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711146051] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:24:09,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:24:09,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 07:24:09,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478771766] [2021-11-20 07:24:09,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:24:09,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:24:09,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:24:09,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:24:09,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:24:09,871 INFO L87 Difference]: Start difference. First operand 105 states and 115 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:24:10,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:24:10,067 INFO L93 Difference]: Finished difference Result 140 states and 155 transitions. [2021-11-20 07:24:10,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:24:10,067 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-20 07:24:10,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:24:10,069 INFO L225 Difference]: With dead ends: 140 [2021-11-20 07:24:10,069 INFO L226 Difference]: Without dead ends: 140 [2021-11-20 07:24:10,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-20 07:24:10,070 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 341 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:24:10,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 65 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:24:10,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-11-20 07:24:10,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 131. [2021-11-20 07:24:10,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 116 states have (on average 1.2758620689655173) internal successors, (148), 130 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:24:10,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 148 transitions. [2021-11-20 07:24:10,076 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 148 transitions. Word has length 55 [2021-11-20 07:24:10,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:24:10,077 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 148 transitions. [2021-11-20 07:24:10,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:24:10,078 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 148 transitions. [2021-11-20 07:24:10,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-20 07:24:10,079 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:24:10,079 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:24:10,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 07:24:10,080 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-20 07:24:10,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:24:10,081 INFO L85 PathProgramCache]: Analyzing trace with hash 109308747, now seen corresponding path program 1 times [2021-11-20 07:24:10,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:24:10,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666247604] [2021-11-20 07:24:10,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:24:10,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:24:10,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:24:10,177 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-20 07:24:10,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:24:10,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666247604] [2021-11-20 07:24:10,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666247604] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:24:10,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:24:10,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 07:24:10,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714025719] [2021-11-20 07:24:10,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:24:10,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:24:10,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:24:10,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:24:10,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:24:10,181 INFO L87 Difference]: Start difference. First operand 131 states and 148 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:24:10,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:24:10,335 INFO L93 Difference]: Finished difference Result 137 states and 152 transitions. [2021-11-20 07:24:10,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:24:10,336 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-20 07:24:10,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:24:10,337 INFO L225 Difference]: With dead ends: 137 [2021-11-20 07:24:10,337 INFO L226 Difference]: Without dead ends: 137 [2021-11-20 07:24:10,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-20 07:24:10,339 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 328 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:24:10,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 88 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:24:10,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-20 07:24:10,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 131. [2021-11-20 07:24:10,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 116 states have (on average 1.2672413793103448) internal successors, (147), 130 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:24:10,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 147 transitions. [2021-11-20 07:24:10,345 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 147 transitions. Word has length 59 [2021-11-20 07:24:10,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:24:10,345 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 147 transitions. [2021-11-20 07:24:10,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:24:10,345 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 147 transitions. [2021-11-20 07:24:10,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-20 07:24:10,347 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:24:10,347 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:24:10,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 07:24:10,347 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-20 07:24:10,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:24:10,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1929263777, now seen corresponding path program 1 times [2021-11-20 07:24:10,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:24:10,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386376481] [2021-11-20 07:24:10,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:24:10,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:24:10,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:24:10,591 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 56 proven. 8 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-20 07:24:10,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:24:10,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386376481] [2021-11-20 07:24:10,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386376481] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:24:10,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22210799] [2021-11-20 07:24:10,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:24:10,592 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:24:10,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:24:10,594 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:24:10,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 07:24:10,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:24:10,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-20 07:24:10,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:24:10,792 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 [2021-11-20 07:24:10,846 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 07:24:10,846 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 11 treesize of output 11 [2021-11-20 07:24:10,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 07:24:10,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:24:10,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 07:24:10,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:24:10,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:24:10,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:24:10,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-20 07:24:11,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:24:11,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:24:11,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:24:11,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:24:11,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:24:11,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:24:11,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 35 [2021-11-20 07:24:11,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:24:11,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:24:11,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:24:11,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:24:11,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:24:11,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:24:11,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 35 [2021-11-20 07:24:11,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:24:11,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:24:11,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:24:11,144 INFO L354 Elim1Store]: treesize reduction 114, result has 18.6 percent of original size [2021-11-20 07:24:11,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 39 [2021-11-20 07:24:11,399 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:24:11,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 13 [2021-11-20 07:24:11,420 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 60 proven. 10 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-20 07:24:11,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:24:12,092 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_dll_create_~head~0#1.offset| Int) (v_DerPreprocessor_1 Int)) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_create_~head~0#1.offset| 12) v_DerPreprocessor_1)) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|) 0)) is different from false [2021-11-20 07:24:12,728 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_dll_create_~head~0#1.offset| Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (= 0 (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 12) v_DerPreprocessor_2)))) (store .cse0 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse0 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_create_~head~0#1.offset| 12) v_DerPreprocessor_1))) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|))) is different from false [2021-11-20 07:24:13,498 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_3 Int) (|ULTIMATE.start_dll_create_~head~0#1.offset| Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (= (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4) v_DerPreprocessor_3) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 12) v_DerPreprocessor_2)))) (store .cse0 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse0 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_create_~head~0#1.offset| 12) v_DerPreprocessor_1))) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|) 0)) is different from false [2021-11-20 07:24:14,829 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_3 Int) (|ULTIMATE.start_dll_create_~head~0#1.offset| Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (= (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ 16 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|) 0) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4) v_DerPreprocessor_3) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 12) v_DerPreprocessor_2)))) (store .cse0 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse0 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_create_~head~0#1.offset| 12) v_DerPreprocessor_1))) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|) 0)) is different from false [2021-11-20 07:24:22,657 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 60 proven. 5 refuted. 0 times theorem prover too weak. 31 trivial. 5 not checked. [2021-11-20 07:24:22,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22210799] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:24:22,658 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:24:22,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 16] total 27 [2021-11-20 07:24:22,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087837206] [2021-11-20 07:24:22,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:24:22,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-20 07:24:22,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:24:22,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-20 07:24:22,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=432, Unknown=9, NotChecked=180, Total=702 [2021-11-20 07:24:22,661 INFO L87 Difference]: Start difference. First operand 131 states and 147 transitions. Second operand has 27 states, 27 states have (on average 2.962962962962963) internal successors, (80), 27 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:24:29,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:24:29,541 INFO L93 Difference]: Finished difference Result 162 states and 176 transitions. [2021-11-20 07:24:29,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 07:24:29,542 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.962962962962963) internal successors, (80), 27 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-20 07:24:29,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:24:29,544 INFO L225 Difference]: With dead ends: 162 [2021-11-20 07:24:29,544 INFO L226 Difference]: Without dead ends: 162 [2021-11-20 07:24:29,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 112 SyntacticMatches, 7 SemanticMatches, 42 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 17.6s TimeCoverageRelationStatistics Valid=336, Invalid=1231, Unknown=9, NotChecked=316, Total=1892 [2021-11-20 07:24:29,546 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 710 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 382 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 07:24:29,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [710 Valid, 513 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 459 Invalid, 0 Unknown, 382 Unchecked, 0.4s Time] [2021-11-20 07:24:29,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-11-20 07:24:29,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 131. [2021-11-20 07:24:29,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 116 states have (on average 1.2586206896551724) internal successors, (146), 130 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:24:29,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 146 transitions. [2021-11-20 07:24:29,552 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 146 transitions. Word has length 63 [2021-11-20 07:24:29,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:24:29,552 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 146 transitions. [2021-11-20 07:24:29,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.962962962962963) internal successors, (80), 27 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:24:29,552 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 146 transitions. [2021-11-20 07:24:29,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-20 07:24:29,557 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:24:29,558 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:24:29,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-20 07:24:29,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:24:29,775 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-20 07:24:29,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:24:29,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1264795644, now seen corresponding path program 1 times [2021-11-20 07:24:29,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:24:29,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569290999] [2021-11-20 07:24:29,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:24:29,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:24:29,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:24:30,190 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 50 proven. 32 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-20 07:24:30,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:24:30,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569290999] [2021-11-20 07:24:30,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569290999] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:24:30,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624123984] [2021-11-20 07:24:30,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:24:30,192 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:24:30,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:24:30,192 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:24:30,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 07:24:30,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:24:30,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-20 07:24:30,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:24:30,379 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 [2021-11-20 07:24:30,413 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 07:24:30,414 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 11 treesize of output 11 [2021-11-20 07:24:30,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 07:24:30,475 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-20 07:24:30,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-11-20 07:24:30,536 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-20 07:24:30,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 25 [2021-11-20 07:24:30,578 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-20 07:24:30,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 25 [2021-11-20 07:24:30,645 INFO L354 Elim1Store]: treesize reduction 92, result has 17.1 percent of original size [2021-11-20 07:24:30,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 42 treesize of output 29 [2021-11-20 07:24:30,830 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 07:24:30,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 10 [2021-11-20 07:24:30,855 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 60 proven. 10 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-20 07:24:30,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:24:39,106 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_5 Int) (v_DerPreprocessor_4 Int) (|ULTIMATE.start_dll_create_~head~0#1.offset| Int)) (= (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 12) v_DerPreprocessor_5)))) (store .cse0 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse0 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_create_~head~0#1.offset| 12) v_DerPreprocessor_4))) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 8)) 0)) is different from false [2021-11-20 07:24:40,224 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_6 Int) (v_DerPreprocessor_5 Int) (v_DerPreprocessor_4 Int) (|ULTIMATE.start_dll_create_~head~0#1.offset| Int)) (= 0 (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4) v_DerPreprocessor_6) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 12) v_DerPreprocessor_5)))) (store .cse0 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse0 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_create_~head~0#1.offset| 12) v_DerPreprocessor_4))) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 8)))) is different from false [2021-11-20 07:24:53,555 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 60 proven. 8 refuted. 0 times theorem prover too weak. 31 trivial. 2 not checked. [2021-11-20 07:24:53,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624123984] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:24:53,555 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:24:53,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 16] total 31 [2021-11-20 07:24:53,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249218093] [2021-11-20 07:24:53,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:24:53,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-20 07:24:53,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:24:53,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-20 07:24:53,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=710, Unknown=17, NotChecked=110, Total=930 [2021-11-20 07:24:53,559 INFO L87 Difference]: Start difference. First operand 131 states and 146 transitions. Second operand has 31 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 31 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:24:56,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:24:56,704 INFO L93 Difference]: Finished difference Result 162 states and 175 transitions. [2021-11-20 07:24:56,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 07:24:56,705 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 31 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-20 07:24:56,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:24:56,706 INFO L225 Difference]: With dead ends: 162 [2021-11-20 07:24:56,706 INFO L226 Difference]: Without dead ends: 162 [2021-11-20 07:24:56,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 115 SyntacticMatches, 5 SemanticMatches, 46 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 25.2s TimeCoverageRelationStatistics Valid=428, Invalid=1633, Unknown=17, NotChecked=178, Total=2256 [2021-11-20 07:24:56,709 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 1100 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 203 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 07:24:56,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1100 Valid, 517 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 530 Invalid, 0 Unknown, 203 Unchecked, 0.5s Time] [2021-11-20 07:24:56,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-11-20 07:24:56,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 131. [2021-11-20 07:24:56,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 116 states have (on average 1.25) internal successors, (145), 130 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:24:56,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 145 transitions. [2021-11-20 07:24:56,715 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 145 transitions. Word has length 65 [2021-11-20 07:24:56,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:24:56,715 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 145 transitions. [2021-11-20 07:24:56,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 31 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:24:56,716 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 145 transitions. [2021-11-20 07:24:56,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-20 07:24:56,717 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:24:56,717 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:24:56,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-20 07:24:56,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-20 07:24:56,941 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-20 07:24:56,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:24:56,942 INFO L85 PathProgramCache]: Analyzing trace with hash -892543400, now seen corresponding path program 1 times [2021-11-20 07:24:56,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:24:56,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026123829] [2021-11-20 07:24:56,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:24:56,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:24:57,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:24:57,248 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 56 proven. 8 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-20 07:24:57,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:24:57,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026123829] [2021-11-20 07:24:57,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026123829] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:24:57,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081243449] [2021-11-20 07:24:57,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:24:57,249 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:24:57,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:24:57,252 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:24:57,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-20 07:24:57,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:24:57,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-20 07:24:57,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:24:57,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:24:57,545 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 07:24:57,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-20 07:24:57,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2021-11-20 07:24:57,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:24:57,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-20 07:24:57,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:24:57,756 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-11-20 07:24:57,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 42 [2021-11-20 07:24:58,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:24:58,071 INFO L354 Elim1Store]: treesize reduction 47, result has 14.5 percent of original size [2021-11-20 07:24:58,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 29 [2021-11-20 07:24:58,200 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 60 proven. 10 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-20 07:24:58,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:25:02,015 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~head~1#1.offset_34| Int) (|ULTIMATE.start_dll_create_~head~0#1.offset| Int)) (or (not (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 12) 0)))) (store .cse0 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse0 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_create_~head~0#1.offset| 12) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |v_ULTIMATE.start_main_~head~1#1.offset_34| 4)) 0)) (and (<= |v_ULTIMATE.start_main_~head~1#1.offset_34| 0) (not (= |v_ULTIMATE.start_main_~head~1#1.offset_34| 0))) (< |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| |v_ULTIMATE.start_main_~head~1#1.offset_34|))) is different from false [2021-11-20 07:25:02,030 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 398 treesize of output 386 [2021-11-20 07:25:02,452 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 60 proven. 9 refuted. 0 times theorem prover too weak. 31 trivial. 1 not checked. [2021-11-20 07:25:02,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081243449] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:25:02,453 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:25:02,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 33 [2021-11-20 07:25:02,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834645765] [2021-11-20 07:25:02,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:25:02,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-20 07:25:02,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:25:02,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-20 07:25:02,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=901, Unknown=2, NotChecked=60, Total=1056 [2021-11-20 07:25:02,457 INFO L87 Difference]: Start difference. First operand 131 states and 145 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:25:03,368 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (not (= |c_ULTIMATE.start_dll_create_~head~0#1.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (not (= |c_ULTIMATE.start_dll_create_~head~0#1.base| 0)) (= (select |c_#valid| |c_ULTIMATE.start_dll_create_~head~0#1.base|) 1) (= (select |c_#valid| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 1) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 8) 0) |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|) 0) (= (select (select |c_#memory_int| |c_ULTIMATE.start_dll_create_~head~0#1.base|) |c_ULTIMATE.start_dll_create_~head~0#1.offset|) 0) (forall ((|v_ULTIMATE.start_main_~head~1#1.offset_34| Int) (|ULTIMATE.start_dll_create_~head~0#1.offset| Int)) (or (not (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 12) 0)))) (store .cse0 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse0 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_create_~head~0#1.offset| 12) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |v_ULTIMATE.start_main_~head~1#1.offset_34| 4)) 0)) (and (<= |v_ULTIMATE.start_main_~head~1#1.offset_34| 0) (not (= |v_ULTIMATE.start_main_~head~1#1.offset_34| 0))) (< |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| |v_ULTIMATE.start_main_~head~1#1.offset_34|))) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| 0))) is different from false [2021-11-20 07:25:03,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:25:03,816 INFO L93 Difference]: Finished difference Result 124 states and 133 transitions. [2021-11-20 07:25:03,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 07:25:03,817 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-20 07:25:03,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:25:03,819 INFO L225 Difference]: With dead ends: 124 [2021-11-20 07:25:03,819 INFO L226 Difference]: Without dead ends: 120 [2021-11-20 07:25:03,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 113 SyntacticMatches, 5 SemanticMatches, 44 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=223, Invalid=1674, Unknown=3, NotChecked=170, Total=2070 [2021-11-20 07:25:03,821 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 38 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 259 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 07:25:03,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 932 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 399 Invalid, 0 Unknown, 259 Unchecked, 0.4s Time] [2021-11-20 07:25:03,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-11-20 07:25:03,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 117. [2021-11-20 07:25:03,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 102 states have (on average 1.2450980392156863) internal successors, (127), 116 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:25:03,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 127 transitions. [2021-11-20 07:25:03,828 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 127 transitions. Word has length 66 [2021-11-20 07:25:03,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:25:03,829 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 127 transitions. [2021-11-20 07:25:03,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:25:03,830 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 127 transitions. [2021-11-20 07:25:03,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-20 07:25:03,831 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:25:03,831 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:25:03,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-20 07:25:04,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-20 07:25:04,050 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-20 07:25:04,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:25:04,051 INFO L85 PathProgramCache]: Analyzing trace with hash 8707913, now seen corresponding path program 1 times [2021-11-20 07:25:04,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:25:04,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583559765] [2021-11-20 07:25:04,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:25:04,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:25:04,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:25:04,355 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 50 proven. 32 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-20 07:25:04,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:25:04,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583559765] [2021-11-20 07:25:04,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583559765] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:25:04,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534005459] [2021-11-20 07:25:04,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:25:04,356 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:25:04,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:25:04,357 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:25:04,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-20 07:25:04,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:25:04,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-20 07:25:04,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:25:04,557 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 [2021-11-20 07:25:04,619 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 07:25:04,620 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 11 treesize of output 11 [2021-11-20 07:25:04,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 07:25:04,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:25:04,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-11-20 07:25:04,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:25:04,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-11-20 07:25:04,779 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-11-20 07:25:04,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 17 [2021-11-20 07:25:05,052 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 15 treesize of output 7 [2021-11-20 07:25:05,063 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 60 proven. 10 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-20 07:25:05,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:25:18,521 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 22812 treesize of output 22428 [2021-11-20 07:25:19,668 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-20 07:25:19,668 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:25:19,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-11-20 07:25:19,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305681167] [2021-11-20 07:25:19,669 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-20 07:25:19,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 07:25:19,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:25:19,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 07:25:19,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=609, Unknown=8, NotChecked=0, Total=702 [2021-11-20 07:25:19,671 INFO L87 Difference]: Start difference. First operand 117 states and 127 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:25:20,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:25:20,232 INFO L93 Difference]: Finished difference Result 143 states and 152 transitions. [2021-11-20 07:25:20,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 07:25:20,233 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-20 07:25:20,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:25:20,234 INFO L225 Difference]: With dead ends: 143 [2021-11-20 07:25:20,234 INFO L226 Difference]: Without dead ends: 143 [2021-11-20 07:25:20,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=270, Invalid=1128, Unknown=8, NotChecked=0, Total=1406 [2021-11-20 07:25:20,236 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 438 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:25:20,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [438 Valid, 247 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:25:20,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-20 07:25:20,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 117. [2021-11-20 07:25:20,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 102 states have (on average 1.2352941176470589) internal successors, (126), 116 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:25:20,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 126 transitions. [2021-11-20 07:25:20,241 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 126 transitions. Word has length 67 [2021-11-20 07:25:20,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:25:20,242 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 126 transitions. [2021-11-20 07:25:20,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:25:20,243 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 126 transitions. [2021-11-20 07:25:20,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-20 07:25:20,243 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:25:20,244 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:25:20,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-20 07:25:20,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-20 07:25:20,463 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-20 07:25:20,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:25:20,463 INFO L85 PathProgramCache]: Analyzing trace with hash -221625277, now seen corresponding path program 1 times [2021-11-20 07:25:20,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:25:20,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946271814] [2021-11-20 07:25:20,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:25:20,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:25:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:25:20,770 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 50 proven. 33 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-20 07:25:20,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:25:20,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946271814] [2021-11-20 07:25:20,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946271814] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:25:20,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18605345] [2021-11-20 07:25:20,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:25:20,772 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:25:20,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:25:20,777 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:25:20,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-20 07:25:20,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:25:20,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-20 07:25:20,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:25:20,970 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 [2021-11-20 07:25:21,017 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 07:25:21,017 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 11 treesize of output 11 [2021-11-20 07:25:21,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 07:25:21,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:25:21,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-20 07:25:21,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:25:21,205 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-11-20 07:25:21,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 43 [2021-11-20 07:25:21,995 INFO L354 Elim1Store]: treesize reduction 82, result has 3.5 percent of original size [2021-11-20 07:25:21,996 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 34 [2021-11-20 07:25:22,005 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 60 proven. 11 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-20 07:25:22,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:25:22,385 INFO L354 Elim1Store]: treesize reduction 5, result has 79.2 percent of original size [2021-11-20 07:25:22,385 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 34 treesize of output 33 [2021-11-20 07:25:31,418 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 2924 treesize of output 2828 [2021-11-20 07:25:31,574 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-20 07:25:31,574 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:25:31,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-11-20 07:25:31,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752234464] [2021-11-20 07:25:31,581 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-20 07:25:31,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 07:25:31,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:25:31,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 07:25:31,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=665, Unknown=7, NotChecked=0, Total=756 [2021-11-20 07:25:31,583 INFO L87 Difference]: Start difference. First operand 117 states and 126 transitions. Second operand has 13 states, 12 states have (on average 4.75) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:25:32,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:25:32,254 INFO L93 Difference]: Finished difference Result 145 states and 154 transitions. [2021-11-20 07:25:32,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 07:25:32,255 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.75) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-20 07:25:32,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:25:32,256 INFO L225 Difference]: With dead ends: 145 [2021-11-20 07:25:32,257 INFO L226 Difference]: Without dead ends: 145 [2021-11-20 07:25:32,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=262, Invalid=1371, Unknown=7, NotChecked=0, Total=1640 [2021-11-20 07:25:32,258 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 476 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:25:32,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [476 Valid, 216 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 07:25:32,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-20 07:25:32,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 119. [2021-11-20 07:25:32,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 104 states have (on average 1.2403846153846154) internal successors, (129), 118 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:25:32,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 129 transitions. [2021-11-20 07:25:32,264 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 129 transitions. Word has length 69 [2021-11-20 07:25:32,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:25:32,265 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 129 transitions. [2021-11-20 07:25:32,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.75) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:25:32,265 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 129 transitions. [2021-11-20 07:25:32,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-20 07:25:32,266 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:25:32,266 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:25:32,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-20 07:25:32,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-20 07:25:32,482 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-20 07:25:32,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:25:32,483 INFO L85 PathProgramCache]: Analyzing trace with hash -221625276, now seen corresponding path program 1 times [2021-11-20 07:25:32,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:25:32,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134778600] [2021-11-20 07:25:32,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:25:32,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:25:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:25:32,968 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 60 proven. 27 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 07:25:32,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:25:32,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134778600] [2021-11-20 07:25:32,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134778600] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:25:32,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340025179] [2021-11-20 07:25:32,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:25:32,969 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:25:32,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:25:32,970 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:25:32,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-20 07:25:33,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:25:33,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-20 07:25:33,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:25:33,150 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 [2021-11-20 07:25:33,317 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-20 07:25:33,317 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 12 treesize of output 18 [2021-11-20 07:25:33,339 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 07:25:33,340 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 11 treesize of output 11 [2021-11-20 07:25:33,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 07:25:33,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 07:25:33,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:25:33,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-20 07:25:33,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:25:33,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-20 07:25:33,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:25:33,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:25:33,647 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-11-20 07:25:33,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 95 treesize of output 70 [2021-11-20 07:25:33,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:25:33,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:25:33,667 INFO L354 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2021-11-20 07:25:33,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 81 [2021-11-20 07:25:34,719 INFO L354 Elim1Store]: treesize reduction 76, result has 3.8 percent of original size [2021-11-20 07:25:34,719 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 107 treesize of output 73 [2021-11-20 07:25:34,737 INFO L354 Elim1Store]: treesize reduction 64, result has 4.5 percent of original size [2021-11-20 07:25:34,738 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 6 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 46 [2021-11-20 07:25:34,857 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 60 proven. 11 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-20 07:25:34,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:25:49,056 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 555 treesize of output 543 [2021-11-20 07:25:49,063 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 1086 treesize of output 1032 [2021-11-20 07:25:52,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 57 [2021-11-20 07:25:52,526 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 60 proven. 11 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-20 07:25:52,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340025179] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:25:52,527 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:25:52,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 39 [2021-11-20 07:25:52,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349776484] [2021-11-20 07:25:52,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:25:52,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-20 07:25:52,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:25:52,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-20 07:25:52,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1414, Unknown=2, NotChecked=0, Total=1560 [2021-11-20 07:25:52,531 INFO L87 Difference]: Start difference. First operand 119 states and 129 transitions. Second operand has 40 states, 39 states have (on average 3.4871794871794872) internal successors, (136), 40 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:25:56,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:25:56,799 INFO L93 Difference]: Finished difference Result 119 states and 128 transitions. [2021-11-20 07:25:56,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 07:25:56,800 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 3.4871794871794872) internal successors, (136), 40 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-20 07:25:56,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:25:56,801 INFO L225 Difference]: With dead ends: 119 [2021-11-20 07:25:56,801 INFO L226 Difference]: Without dead ends: 119 [2021-11-20 07:25:56,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 114 SyntacticMatches, 4 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=326, Invalid=2321, Unknown=5, NotChecked=0, Total=2652 [2021-11-20 07:25:56,803 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 77 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 306 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:25:56,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 710 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 271 Invalid, 0 Unknown, 306 Unchecked, 0.2s Time] [2021-11-20 07:25:56,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-11-20 07:25:56,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-11-20 07:25:56,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 104 states have (on average 1.2307692307692308) internal successors, (128), 118 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:25:56,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 128 transitions. [2021-11-20 07:25:56,809 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 128 transitions. Word has length 69 [2021-11-20 07:25:56,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:25:56,809 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 128 transitions. [2021-11-20 07:25:56,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 3.4871794871794872) internal successors, (136), 40 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:25:56,810 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 128 transitions. [2021-11-20 07:25:56,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-20 07:25:56,811 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:25:56,811 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:25:56,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-20 07:25:57,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-20 07:25:57,037 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-20 07:25:57,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:25:57,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1766474597, now seen corresponding path program 1 times [2021-11-20 07:25:57,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:25:57,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525477926] [2021-11-20 07:25:57,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:25:57,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:25:57,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:25:57,409 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 60 proven. 27 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-20 07:25:57,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:25:57,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525477926] [2021-11-20 07:25:57,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525477926] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:25:57,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322341628] [2021-11-20 07:25:57,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:25:57,411 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:25:57,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:25:57,412 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:25:57,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-20 07:25:57,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:25:57,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-20 07:25:57,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:25:57,666 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 [2021-11-20 07:25:57,750 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 07:25:57,750 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 11 treesize of output 11 [2021-11-20 07:25:57,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 07:25:57,855 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-20 07:25:57,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-11-20 07:25:57,933 INFO L354 Elim1Store]: treesize reduction 72, result has 20.9 percent of original size [2021-11-20 07:25:57,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 41 [2021-11-20 07:25:58,398 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-11-20 07:25:58,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 22 [2021-11-20 07:25:58,418 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 60 proven. 13 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-20 07:25:58,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:25:58,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-11-20 07:25:58,976 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 60 proven. 13 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-20 07:25:58,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322341628] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:25:58,977 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:25:58,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 12] total 32 [2021-11-20 07:25:58,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134181776] [2021-11-20 07:25:58,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:25:58,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-20 07:25:58,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:25:58,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-20 07:25:58,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=939, Unknown=0, NotChecked=0, Total=1056 [2021-11-20 07:25:58,980 INFO L87 Difference]: Start difference. First operand 119 states and 128 transitions. Second operand has 33 states, 32 states have (on average 4.03125) internal successors, (129), 33 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:25:59,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:25:59,603 INFO L93 Difference]: Finished difference Result 148 states and 159 transitions. [2021-11-20 07:25:59,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 07:25:59,604 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 4.03125) internal successors, (129), 33 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-20 07:25:59,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:25:59,605 INFO L225 Difference]: With dead ends: 148 [2021-11-20 07:25:59,605 INFO L226 Difference]: Without dead ends: 148 [2021-11-20 07:25:59,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 126 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=247, Invalid=1645, Unknown=0, NotChecked=0, Total=1892 [2021-11-20 07:25:59,607 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 156 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 104 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:25:59,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 533 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 331 Invalid, 0 Unknown, 104 Unchecked, 0.3s Time] [2021-11-20 07:25:59,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-20 07:25:59,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 135. [2021-11-20 07:25:59,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 120 states have (on average 1.2666666666666666) internal successors, (152), 134 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:25:59,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 152 transitions. [2021-11-20 07:25:59,613 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 152 transitions. Word has length 71 [2021-11-20 07:25:59,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:25:59,614 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 152 transitions. [2021-11-20 07:25:59,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 4.03125) internal successors, (129), 33 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:25:59,614 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 152 transitions. [2021-11-20 07:25:59,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-20 07:25:59,615 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:25:59,615 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:25:59,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-20 07:25:59,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-20 07:25:59,829 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-20 07:25:59,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:25:59,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1073862852, now seen corresponding path program 1 times [2021-11-20 07:25:59,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:25:59,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761403158] [2021-11-20 07:25:59,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:25:59,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:25:59,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:26:00,326 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 60 proven. 28 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 07:26:00,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:26:00,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761403158] [2021-11-20 07:26:00,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761403158] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:26:00,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281402458] [2021-11-20 07:26:00,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:26:00,327 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:26:00,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:26:00,329 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:26:00,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-20 07:26:00,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:26:00,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-20 07:26:00,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:26:00,553 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 [2021-11-20 07:26:00,558 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 [2021-11-20 07:26:00,679 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 07:26:00,680 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 12 treesize of output 14 [2021-11-20 07:26:00,693 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 07:26:00,694 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 11 treesize of output 11 [2021-11-20 07:26:00,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 07:26:00,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 07:26:00,850 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-20 07:26:00,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-11-20 07:26:00,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:26:00,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-20 07:26:00,970 INFO L354 Elim1Store]: treesize reduction 104, result has 15.4 percent of original size [2021-11-20 07:26:00,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 111 treesize of output 86 [2021-11-20 07:26:01,007 INFO L354 Elim1Store]: treesize reduction 96, result has 16.5 percent of original size [2021-11-20 07:26:01,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 101 treesize of output 88 [2021-11-20 07:26:01,813 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-11-20 07:26:01,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 108 treesize of output 65 [2021-11-20 07:26:01,820 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-20 07:26:01,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 38 [2021-11-20 07:26:01,982 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 60 proven. 12 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-20 07:26:01,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:26:04,170 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 60 proven. 12 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-20 07:26:04,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281402458] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:26:04,171 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:26:04,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 15] total 39 [2021-11-20 07:26:04,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330807849] [2021-11-20 07:26:04,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:26:04,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-20 07:26:04,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:26:04,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-20 07:26:04,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1424, Unknown=0, NotChecked=0, Total=1560 [2021-11-20 07:26:04,174 INFO L87 Difference]: Start difference. First operand 135 states and 152 transitions. Second operand has 40 states, 39 states have (on average 3.5384615384615383) internal successors, (138), 40 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:26:08,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:26:08,645 INFO L93 Difference]: Finished difference Result 184 states and 198 transitions. [2021-11-20 07:26:08,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-20 07:26:08,646 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 3.5384615384615383) internal successors, (138), 40 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-20 07:26:08,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:26:08,647 INFO L225 Difference]: With dead ends: 184 [2021-11-20 07:26:08,647 INFO L226 Difference]: Without dead ends: 184 [2021-11-20 07:26:08,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 122 SyntacticMatches, 3 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 759 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=604, Invalid=3056, Unknown=0, NotChecked=0, Total=3660 [2021-11-20 07:26:08,649 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 1523 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1523 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 164 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 07:26:08,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1523 Valid, 509 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 830 Invalid, 0 Unknown, 164 Unchecked, 0.8s Time] [2021-11-20 07:26:08,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-11-20 07:26:08,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 145. [2021-11-20 07:26:08,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 130 states have (on average 1.2384615384615385) internal successors, (161), 144 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:26:08,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 161 transitions. [2021-11-20 07:26:08,663 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 161 transitions. Word has length 72 [2021-11-20 07:26:08,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:26:08,664 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 161 transitions. [2021-11-20 07:26:08,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 3.5384615384615383) internal successors, (138), 40 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:26:08,664 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 161 transitions. [2021-11-20 07:26:08,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-20 07:26:08,665 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:26:08,665 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:26:08,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-20 07:26:08,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:26:08,879 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-20 07:26:08,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:26:08,879 INFO L85 PathProgramCache]: Analyzing trace with hash -215880728, now seen corresponding path program 1 times [2021-11-20 07:26:08,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:26:08,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662095943] [2021-11-20 07:26:08,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:26:08,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:26:08,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:26:09,602 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 67 proven. 37 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-20 07:26:09,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:26:09,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662095943] [2021-11-20 07:26:09,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662095943] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:26:09,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730672658] [2021-11-20 07:26:09,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:26:09,603 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:26:09,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:26:09,605 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:26:09,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-20 07:26:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:26:09,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 61 conjunts are in the unsatisfiable core [2021-11-20 07:26:09,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:26:09,797 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 [2021-11-20 07:26:09,863 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-20 07:26:09,863 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 17 treesize of output 21 [2021-11-20 07:26:09,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 07:26:09,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:26:09,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 07:26:10,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:26:10,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:26:10,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:26:10,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-20 07:26:10,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:26:10,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:26:10,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:26:10,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:26:10,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:26:10,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:26:10,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 35 [2021-11-20 07:26:10,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:26:10,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:26:10,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:26:10,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:26:10,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:26:10,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:26:10,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 35 [2021-11-20 07:26:10,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:26:10,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:26:10,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:26:10,306 INFO L354 Elim1Store]: treesize reduction 114, result has 18.6 percent of original size [2021-11-20 07:26:10,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 44 [2021-11-20 07:26:10,491 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-20 07:26:10,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2021-11-20 07:26:10,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-11-20 07:26:10,668 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-20 07:26:10,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 50 [2021-11-20 07:26:10,755 INFO L354 Elim1Store]: treesize reduction 56, result has 23.3 percent of original size [2021-11-20 07:26:10,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 62 [2021-11-20 07:26:10,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 07:26:10,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:26:10,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:26:10,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:26:10,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:26:10,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:26:10,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:26:10,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 65 [2021-11-20 07:26:10,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 07:26:10,943 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-20 07:26:10,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-11-20 07:26:10,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:26:10,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:26:10,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:26:10,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:26:10,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:26:10,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:26:10,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 65 [2021-11-20 07:26:10,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:26:10,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-20 07:26:11,138 INFO L354 Elim1Store]: treesize reduction 104, result has 15.4 percent of original size [2021-11-20 07:26:11,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 213 treesize of output 158 [2021-11-20 07:26:11,168 INFO L354 Elim1Store]: treesize reduction 96, result has 16.5 percent of original size [2021-11-20 07:26:11,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 203 treesize of output 178 [2021-11-20 07:26:11,234 INFO L354 Elim1Store]: treesize reduction 356, result has 6.8 percent of original size [2021-11-20 07:26:11,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 18 case distinctions, treesize of input 161 treesize of output 146 [2021-11-20 07:26:12,474 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-11-20 07:26:12,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 156 treesize of output 101 [2021-11-20 07:26:12,481 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-20 07:26:12,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 74 [2021-11-20 07:26:12,812 INFO L354 Elim1Store]: treesize reduction 162, result has 0.6 percent of original size [2021-11-20 07:26:12,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 64 treesize of output 30 [2021-11-20 07:26:12,837 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 73 proven. 25 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-20 07:26:12,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:27:31,039 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:27:31,478 INFO L354 Elim1Store]: treesize reduction 1204, result has 14.2 percent of original size [2021-11-20 07:27:31,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 8 case distinctions, treesize of input 128 treesize of output 227 [2021-11-20 07:27:31,507 INFO L354 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2021-11-20 07:27:31,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 207 treesize of output 211 [2021-11-20 07:27:31,682 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:27:31,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:27:31,684 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:27:31,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-11-20 07:27:31,717 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:27:31,721 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:27:31,722 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:27:31,724 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:27:31,739 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:27:31,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 49 [2021-11-20 07:27:48,392 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 65 proven. 25 refuted. 8 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-20 07:27:48,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730672658] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:27:48,393 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:27:48,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 26, 26] total 61 [2021-11-20 07:27:48,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520219538] [2021-11-20 07:27:48,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:27:48,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2021-11-20 07:27:48,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:27:48,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-11-20 07:27:48,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=3344, Unknown=16, NotChecked=0, Total=3660 [2021-11-20 07:27:48,396 INFO L87 Difference]: Start difference. First operand 145 states and 161 transitions. Second operand has 61 states, 61 states have (on average 2.7049180327868854) internal successors, (165), 61 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:27:56,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:27:56,172 INFO L93 Difference]: Finished difference Result 145 states and 160 transitions. [2021-11-20 07:27:56,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-20 07:27:56,173 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.7049180327868854) internal successors, (165), 61 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-20 07:27:56,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:27:56,176 INFO L225 Difference]: With dead ends: 145 [2021-11-20 07:27:56,176 INFO L226 Difference]: Without dead ends: 145 [2021-11-20 07:27:56,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 113 SyntacticMatches, 12 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1841 ImplicationChecksByTransitivity, 60.3s TimeCoverageRelationStatistics Valid=741, Invalid=5723, Unknown=16, NotChecked=0, Total=6480 [2021-11-20 07:27:56,180 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 137 mSDsluCounter, 1352 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1404 SdHoareTripleChecker+Invalid, 1222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 369 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 07:27:56,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 1404 Invalid, 1222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 828 Invalid, 0 Unknown, 369 Unchecked, 0.8s Time] [2021-11-20 07:27:56,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-20 07:27:56,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-11-20 07:27:56,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 130 states have (on average 1.2307692307692308) internal successors, (160), 144 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:27:56,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 160 transitions. [2021-11-20 07:27:56,187 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 160 transitions. Word has length 77 [2021-11-20 07:27:56,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:27:56,187 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 160 transitions. [2021-11-20 07:27:56,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.7049180327868854) internal successors, (165), 61 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:27:56,188 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 160 transitions. [2021-11-20 07:27:56,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-20 07:27:56,188 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:27:56,189 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:27:56,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-20 07:27:56,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:27:56,417 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-20 07:27:56,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:27:56,418 INFO L85 PathProgramCache]: Analyzing trace with hash 323840077, now seen corresponding path program 1 times [2021-11-20 07:27:56,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:27:56,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339620698] [2021-11-20 07:27:56,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:27:56,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:27:56,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:27:57,224 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 65 proven. 41 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-20 07:27:57,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:27:57,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339620698] [2021-11-20 07:27:57,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339620698] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:27:57,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929887546] [2021-11-20 07:27:57,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:27:57,225 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:27:57,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:27:57,226 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:27:57,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-20 07:27:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:27:57,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 62 conjunts are in the unsatisfiable core [2021-11-20 07:27:57,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:27:57,383 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 [2021-11-20 07:27:57,429 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-20 07:27:57,430 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 17 treesize of output 21 [2021-11-20 07:27:57,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 07:27:57,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:27:57,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-20 07:27:57,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:27:57,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:27:57,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:27:57,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 25 [2021-11-20 07:27:57,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:27:57,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:27:57,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:27:57,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 25 [2021-11-20 07:27:57,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:27:57,793 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-20 07:27:57,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 34 [2021-11-20 07:27:57,991 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-20 07:27:57,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2021-11-20 07:27:58,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-20 07:27:58,145 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-20 07:27:58,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 40 [2021-11-20 07:27:58,255 INFO L354 Elim1Store]: treesize reduction 56, result has 23.3 percent of original size [2021-11-20 07:27:58,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 52 [2021-11-20 07:27:58,354 INFO L354 Elim1Store]: treesize reduction 122, result has 17.6 percent of original size [2021-11-20 07:27:58,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 55 [2021-11-20 07:27:58,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 07:27:58,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 07:27:58,485 INFO L354 Elim1Store]: treesize reduction 122, result has 17.6 percent of original size [2021-11-20 07:27:58,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 55 [2021-11-20 07:27:58,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:27:58,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-20 07:27:58,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:27:58,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-20 07:27:58,668 INFO L354 Elim1Store]: treesize reduction 104, result has 15.4 percent of original size [2021-11-20 07:27:58,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 200 treesize of output 151 [2021-11-20 07:27:58,695 INFO L354 Elim1Store]: treesize reduction 96, result has 16.5 percent of original size [2021-11-20 07:27:58,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 190 treesize of output 165 [2021-11-20 07:27:58,738 INFO L354 Elim1Store]: treesize reduction 298, result has 8.0 percent of original size [2021-11-20 07:27:58,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 148 treesize of output 130 [2021-11-20 07:27:59,959 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-11-20 07:27:59,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 143 treesize of output 94 [2021-11-20 07:27:59,968 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-20 07:27:59,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 99 treesize of output 67 [2021-11-20 07:28:00,516 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-11-20 07:28:00,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 27 [2021-11-20 07:28:00,537 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 71 proven. 29 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-20 07:28:00,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:28:38,714 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:28:38,714 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:28:38,715 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:28:39,282 INFO L354 Elim1Store]: treesize reduction 1641, result has 12.5 percent of original size [2021-11-20 07:28:39,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 9 case distinctions, treesize of input 149 treesize of output 255 [2021-11-20 07:28:39,319 INFO L354 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2021-11-20 07:28:39,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 235 treesize of output 237 [2021-11-20 07:28:39,418 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:28:39,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-20 07:28:39,581 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:28:39,583 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:28:39,585 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:28:39,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:28:39,603 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:28:39,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 54 [2021-11-20 07:28:46,234 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 61 proven. 39 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-20 07:28:46,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929887546] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:28:46,234 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:28:46,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 26, 28] total 63 [2021-11-20 07:28:46,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725440950] [2021-11-20 07:28:46,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:28:46,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2021-11-20 07:28:46,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:28:46,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-11-20 07:28:46,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=3595, Unknown=11, NotChecked=0, Total=3906 [2021-11-20 07:28:46,239 INFO L87 Difference]: Start difference. First operand 145 states and 160 transitions. Second operand has 63 states, 63 states have (on average 2.7142857142857144) internal successors, (171), 63 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:28:54,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:28:54,227 INFO L93 Difference]: Finished difference Result 145 states and 159 transitions. [2021-11-20 07:28:54,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-20 07:28:54,228 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.7142857142857144) internal successors, (171), 63 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-20 07:28:54,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:28:54,229 INFO L225 Difference]: With dead ends: 145 [2021-11-20 07:28:54,229 INFO L226 Difference]: Without dead ends: 145 [2021-11-20 07:28:54,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 119 SyntacticMatches, 10 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1971 ImplicationChecksByTransitivity, 47.7s TimeCoverageRelationStatistics Valid=764, Invalid=6197, Unknown=11, NotChecked=0, Total=6972 [2021-11-20 07:28:54,233 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 141 mSDsluCounter, 1280 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 1331 SdHoareTripleChecker+Invalid, 1300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 466 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 07:28:54,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 1331 Invalid, 1300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 794 Invalid, 0 Unknown, 466 Unchecked, 0.7s Time] [2021-11-20 07:28:54,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-20 07:28:54,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-11-20 07:28:54,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 130 states have (on average 1.2230769230769232) internal successors, (159), 144 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:28:54,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 159 transitions. [2021-11-20 07:28:54,239 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 159 transitions. Word has length 79 [2021-11-20 07:28:54,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:28:54,239 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 159 transitions. [2021-11-20 07:28:54,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.7142857142857144) internal successors, (171), 63 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:28:54,240 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 159 transitions. [2021-11-20 07:28:54,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-20 07:28:54,241 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:28:54,241 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2021-11-20 07:28:54,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-11-20 07:28:54,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-11-20 07:28:54,461 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-20 07:28:54,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:28:54,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1110523695, now seen corresponding path program 1 times [2021-11-20 07:28:54,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:28:54,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981811624] [2021-11-20 07:28:54,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:28:54,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:28:54,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:28:55,211 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 64 proven. 34 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-20 07:28:55,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:28:55,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981811624] [2021-11-20 07:28:55,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981811624] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:28:55,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214755138] [2021-11-20 07:28:55,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:28:55,212 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:28:55,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:28:55,213 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:28:55,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a462453-97b8-4c6b-b685-41c643969dd5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-20 07:28:55,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:28:55,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 53 conjunts are in the unsatisfiable core [2021-11-20 07:28:55,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:28:55,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:28:55,479 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-20 07:28:55,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-20 07:28:55,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2021-11-20 07:28:55,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:28:55,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-20 07:28:55,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:28:55,764 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-11-20 07:28:55,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 47 [2021-11-20 07:28:55,931 INFO L354 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2021-11-20 07:28:55,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2021-11-20 07:28:56,080 INFO L354 Elim1Store]: treesize reduction 63, result has 12.5 percent of original size [2021-11-20 07:28:56,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 45 [2021-11-20 07:28:56,134 INFO L354 Elim1Store]: treesize reduction 69, result has 11.5 percent of original size [2021-11-20 07:28:56,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 45 [2021-11-20 07:28:56,188 INFO L354 Elim1Store]: treesize reduction 69, result has 11.5 percent of original size [2021-11-20 07:28:56,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 45 [2021-11-20 07:28:56,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 07:28:56,277 INFO L354 Elim1Store]: treesize reduction 63, result has 12.5 percent of original size [2021-11-20 07:28:56,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 54 [2021-11-20 07:28:56,431 INFO L354 Elim1Store]: treesize reduction 104, result has 15.4 percent of original size [2021-11-20 07:28:56,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 67 treesize of output 66 [2021-11-20 07:28:56,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:28:56,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-20 07:28:56,646 INFO L354 Elim1Store]: treesize reduction 337, result has 9.4 percent of original size [2021-11-20 07:28:56,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 186 treesize of output 118 [2021-11-20 07:28:56,675 INFO L354 Elim1Store]: treesize reduction 96, result has 16.5 percent of original size [2021-11-20 07:28:56,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 163 treesize of output 150 [2021-11-20 07:28:57,610 INFO L354 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2021-11-20 07:28:57,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 155 treesize of output 127 [2021-11-20 07:28:57,830 INFO L354 Elim1Store]: treesize reduction 128, result has 0.8 percent of original size [2021-11-20 07:28:57,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 119 treesize of output 35 [2021-11-20 07:28:57,893 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 60 proven. 32 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-20 07:28:57,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:29:14,625 WARN L227 SmtUtils]: Spent 8.06s on a formula simplification that was a NOOP. DAG size: 67 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)