./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/dll-token-1.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_89bd1565-6ccd-4b08-a890-0a09b457d572/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bd1565-6ccd-4b08-a890-0a09b457d572/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_89bd1565-6ccd-4b08-a890-0a09b457d572/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bd1565-6ccd-4b08-a890-0a09b457d572/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-token-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bd1565-6ccd-4b08-a890-0a09b457d572/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_89bd1565-6ccd-4b08-a890-0a09b457d572/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 26e745e5a6378d1005b5b65d8cf35b442871742f5efbed2506d4a18acf4ab9a5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:35:45,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:35:45,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:35:45,353 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:35:45,354 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:35:45,359 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:35:45,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:35:45,364 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:35:45,367 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:35:45,372 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:35:45,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:35:45,375 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:35:45,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:35:45,378 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:35:45,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:35:45,386 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:35:45,387 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:35:45,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:35:45,391 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:35:45,401 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:35:45,403 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:35:45,404 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:35:45,407 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:35:45,408 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:35:45,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:35:45,418 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:35:45,418 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:35:45,420 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:35:45,421 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:35:45,422 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:35:45,423 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:35:45,424 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:35:45,426 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:35:45,427 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:35:45,428 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:35:45,429 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:35:45,429 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:35:45,430 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:35:45,430 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:35:45,431 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:35:45,431 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:35:45,432 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bd1565-6ccd-4b08-a890-0a09b457d572/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-20 07:35:45,480 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:35:45,481 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:35:45,481 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:35:45,482 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:35:45,483 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:35:45,483 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:35:45,483 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:35:45,484 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:35:45,484 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:35:45,484 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:35:45,485 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:35:45,486 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 07:35:45,486 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:35:45,486 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:35:45,486 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:35:45,486 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 07:35:45,487 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 07:35:45,487 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 07:35:45,487 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:35:45,487 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 07:35:45,488 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:35:45,488 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:35:45,488 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:35:45,488 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:35:45,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:35:45,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:35:45,489 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:35:45,489 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:35:45,490 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:35:45,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 07:35:45,491 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:35:45,492 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_89bd1565-6ccd-4b08-a890-0a09b457d572/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bd1565-6ccd-4b08-a890-0a09b457d572/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26e745e5a6378d1005b5b65d8cf35b442871742f5efbed2506d4a18acf4ab9a5 [2021-11-20 07:35:45,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:35:45,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:35:45,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:35:45,856 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:35:45,861 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:35:45,863 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bd1565-6ccd-4b08-a890-0a09b457d572/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/forester-heap/dll-token-1.i [2021-11-20 07:35:45,932 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bd1565-6ccd-4b08-a890-0a09b457d572/bin/uautomizer-DQz5hQGWxF/data/a5a2d00f3/256ec863606d4537a93b1c08210c0b81/FLAGd72b397a1 [2021-11-20 07:35:46,396 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:35:46,396 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bd1565-6ccd-4b08-a890-0a09b457d572/sv-benchmarks/c/forester-heap/dll-token-1.i [2021-11-20 07:35:46,409 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bd1565-6ccd-4b08-a890-0a09b457d572/bin/uautomizer-DQz5hQGWxF/data/a5a2d00f3/256ec863606d4537a93b1c08210c0b81/FLAGd72b397a1 [2021-11-20 07:35:46,745 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bd1565-6ccd-4b08-a890-0a09b457d572/bin/uautomizer-DQz5hQGWxF/data/a5a2d00f3/256ec863606d4537a93b1c08210c0b81 [2021-11-20 07:35:46,748 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:35:46,749 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:35:46,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:35:46,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:35:46,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:35:46,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:35:46" (1/1) ... [2021-11-20 07:35:46,757 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f582b82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:35:46, skipping insertion in model container [2021-11-20 07:35:46,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:35:46" (1/1) ... [2021-11-20 07:35:46,764 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:35:46,800 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:35:47,119 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_89bd1565-6ccd-4b08-a890-0a09b457d572/sv-benchmarks/c/forester-heap/dll-token-1.i[22229,22242] [2021-11-20 07:35:47,124 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_89bd1565-6ccd-4b08-a890-0a09b457d572/sv-benchmarks/c/forester-heap/dll-token-1.i[22398,22411] [2021-11-20 07:35:47,125 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_89bd1565-6ccd-4b08-a890-0a09b457d572/sv-benchmarks/c/forester-heap/dll-token-1.i[22489,22502] [2021-11-20 07:35:47,126 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_89bd1565-6ccd-4b08-a890-0a09b457d572/sv-benchmarks/c/forester-heap/dll-token-1.i[22571,22584] [2021-11-20 07:35:47,128 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_89bd1565-6ccd-4b08-a890-0a09b457d572/sv-benchmarks/c/forester-heap/dll-token-1.i[22649,22662] [2021-11-20 07:35:47,130 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_89bd1565-6ccd-4b08-a890-0a09b457d572/sv-benchmarks/c/forester-heap/dll-token-1.i[22795,22808] [2021-11-20 07:35:47,133 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:35:47,141 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:35:47,175 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_89bd1565-6ccd-4b08-a890-0a09b457d572/sv-benchmarks/c/forester-heap/dll-token-1.i[22229,22242] [2021-11-20 07:35:47,177 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_89bd1565-6ccd-4b08-a890-0a09b457d572/sv-benchmarks/c/forester-heap/dll-token-1.i[22398,22411] [2021-11-20 07:35:47,178 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_89bd1565-6ccd-4b08-a890-0a09b457d572/sv-benchmarks/c/forester-heap/dll-token-1.i[22489,22502] [2021-11-20 07:35:47,179 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_89bd1565-6ccd-4b08-a890-0a09b457d572/sv-benchmarks/c/forester-heap/dll-token-1.i[22571,22584] [2021-11-20 07:35:47,180 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_89bd1565-6ccd-4b08-a890-0a09b457d572/sv-benchmarks/c/forester-heap/dll-token-1.i[22649,22662] [2021-11-20 07:35:47,196 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_89bd1565-6ccd-4b08-a890-0a09b457d572/sv-benchmarks/c/forester-heap/dll-token-1.i[22795,22808] [2021-11-20 07:35:47,198 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:35:47,231 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:35:47,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:35:47 WrapperNode [2021-11-20 07:35:47,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:35:47,234 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:35:47,234 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:35:47,234 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:35:47,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:35:47" (1/1) ... [2021-11-20 07:35:47,271 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:35:47" (1/1) ... [2021-11-20 07:35:47,321 INFO L137 Inliner]: procedures = 119, calls = 36, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 139 [2021-11-20 07:35:47,321 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:35:47,322 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:35:47,322 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:35:47,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:35:47,330 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:35:47" (1/1) ... [2021-11-20 07:35:47,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:35:47" (1/1) ... [2021-11-20 07:35:47,348 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:35:47" (1/1) ... [2021-11-20 07:35:47,348 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:35:47" (1/1) ... [2021-11-20 07:35:47,362 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:35:47" (1/1) ... [2021-11-20 07:35:47,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:35:47" (1/1) ... [2021-11-20 07:35:47,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:35:47" (1/1) ... [2021-11-20 07:35:47,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:35:47,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:35:47,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:35:47,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:35:47,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:35:47" (1/1) ... [2021-11-20 07:35:47,401 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:35:47,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bd1565-6ccd-4b08-a890-0a09b457d572/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:35:47,426 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bd1565-6ccd-4b08-a890-0a09b457d572/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:35:47,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bd1565-6ccd-4b08-a890-0a09b457d572/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:35:47,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 07:35:47,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 07:35:47,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 07:35:47,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:35:47,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 07:35:47,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 07:35:47,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 07:35:47,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 07:35:47,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:35:47,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:35:47,576 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:35:47,578 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:35:47,961 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:35:47,969 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:35:47,970 INFO L301 CfgBuilder]: Removed 15 assume(true) statements. [2021-11-20 07:35:47,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:35:47 BoogieIcfgContainer [2021-11-20 07:35:47,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:35:47,974 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:35:47,974 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:35:47,977 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:35:47,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:35:46" (1/3) ... [2021-11-20 07:35:47,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5723c0e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:35:47, skipping insertion in model container [2021-11-20 07:35:47,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:35:47" (2/3) ... [2021-11-20 07:35:47,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5723c0e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:35:47, skipping insertion in model container [2021-11-20 07:35:47,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:35:47" (3/3) ... [2021-11-20 07:35:47,980 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-token-1.i [2021-11-20 07:35:47,986 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:35:47,986 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 64 error locations. [2021-11-20 07:35:48,032 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:35:48,040 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 07:35:48,040 INFO L340 AbstractCegarLoop]: Starting to check reachability of 64 error locations. [2021-11-20 07:35:48,061 INFO L276 IsEmpty]: Start isEmpty. Operand has 136 states, 71 states have (on average 2.23943661971831) internal successors, (159), 135 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 07:35:48,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-20 07:35:48,068 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:35:48,069 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-20 07:35:48,069 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 60 more)] === [2021-11-20 07:35:48,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:35:48,075 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-11-20 07:35:48,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:35:48,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459740030] [2021-11-20 07:35:48,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:35:48,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:35:48,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:35:48,231 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 07:35:48,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:35:48,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459740030] [2021-11-20 07:35:48,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459740030] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:35:48,255 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:35:48,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 07:35:48,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988181170] [2021-11-20 07:35:48,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:35:48,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:35:48,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:35:48,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:35:48,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:35:48,304 INFO L87 Difference]: Start difference. First operand has 136 states, 71 states have (on average 2.23943661971831) internal successors, (159), 135 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) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:35:48,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:35:48,529 INFO L93 Difference]: Finished difference Result 153 states and 156 transitions. [2021-11-20 07:35:48,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:35:48,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-20 07:35:48,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:35:48,545 INFO L225 Difference]: With dead ends: 153 [2021-11-20 07:35:48,545 INFO L226 Difference]: Without dead ends: 151 [2021-11-20 07:35:48,549 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 07:35:48,555 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 110 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:35:48,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 103 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:35:48,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-11-20 07:35:48,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 131. [2021-11-20 07:35:48,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 70 states have (on average 1.9) internal successors, (133), 130 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 07:35:48,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 133 transitions. [2021-11-20 07:35:48,605 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 133 transitions. Word has length 3 [2021-11-20 07:35:48,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:35:48,605 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 133 transitions. [2021-11-20 07:35:48,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:35:48,606 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 133 transitions. [2021-11-20 07:35:48,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-20 07:35:48,606 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:35:48,606 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-20 07:35:48,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 07:35:48,607 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 60 more)] === [2021-11-20 07:35:48,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:35:48,608 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-11-20 07:35:48,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:35:48,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072467321] [2021-11-20 07:35:48,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:35:48,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:35:48,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:35:48,697 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 07:35:48,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:35:48,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072467321] [2021-11-20 07:35:48,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072467321] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:35:48,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:35:48,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 07:35:48,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353680740] [2021-11-20 07:35:48,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:35:48,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:35:48,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:35:48,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:35:48,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:35:48,706 INFO L87 Difference]: Start difference. First operand 131 states and 133 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:35:48,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:35:48,850 INFO L93 Difference]: Finished difference Result 156 states and 158 transitions. [2021-11-20 07:35:48,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:35:48,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-20 07:35:48,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:35:48,853 INFO L225 Difference]: With dead ends: 156 [2021-11-20 07:35:48,854 INFO L226 Difference]: Without dead ends: 156 [2021-11-20 07:35:48,854 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 07:35:48,856 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 115 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:35:48,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 105 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:35:48,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-20 07:35:48,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 128. [2021-11-20 07:35:48,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 70 states have (on average 1.8571428571428572) internal successors, (130), 127 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 07:35:48,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 130 transitions. [2021-11-20 07:35:48,885 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 130 transitions. Word has length 3 [2021-11-20 07:35:48,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:35:48,885 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 130 transitions. [2021-11-20 07:35:48,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:35:48,885 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 130 transitions. [2021-11-20 07:35:48,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-20 07:35:48,886 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:35:48,886 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:35:48,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 07:35:48,887 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 60 more)] === [2021-11-20 07:35:48,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:35:48,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1837112020, now seen corresponding path program 1 times [2021-11-20 07:35:48,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:35:48,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434385159] [2021-11-20 07:35:48,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:35:48,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:35:48,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:35:49,007 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 07:35:49,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:35:49,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434385159] [2021-11-20 07:35:49,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434385159] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:35:49,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:35:49,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 07:35:49,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226723455] [2021-11-20 07:35:49,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:35:49,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:35:49,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:35:49,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:35:49,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:35:49,011 INFO L87 Difference]: Start difference. First operand 128 states and 130 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states 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 07:35:49,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:35:49,278 INFO L93 Difference]: Finished difference Result 241 states and 245 transitions. [2021-11-20 07:35:49,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:35:49,279 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2021-11-20 07:35:49,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:35:49,281 INFO L225 Difference]: With dead ends: 241 [2021-11-20 07:35:49,281 INFO L226 Difference]: Without dead ends: 241 [2021-11-20 07:35:49,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:35:49,283 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 271 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:35:49,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 113 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:35:49,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-11-20 07:35:49,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 167. [2021-11-20 07:35:49,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 109 states have (on average 1.81651376146789) internal successors, (198), 166 states have internal predecessors, (198), 0 states have call successors, (0), 0 states 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 07:35:49,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 198 transitions. [2021-11-20 07:35:49,298 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 198 transitions. Word has length 9 [2021-11-20 07:35:49,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:35:49,299 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 198 transitions. [2021-11-20 07:35:49,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states 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 07:35:49,299 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 198 transitions. [2021-11-20 07:35:49,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-20 07:35:49,300 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:35:49,300 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:35:49,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 07:35:49,300 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 60 more)] === [2021-11-20 07:35:49,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:35:49,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1837112019, now seen corresponding path program 1 times [2021-11-20 07:35:49,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:35:49,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452058667] [2021-11-20 07:35:49,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:35:49,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:35:49,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:35:49,356 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 07:35:49,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:35:49,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452058667] [2021-11-20 07:35:49,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452058667] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:35:49,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:35:49,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 07:35:49,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703024369] [2021-11-20 07:35:49,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:35:49,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:35:49,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:35:49,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:35:49,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:35:49,359 INFO L87 Difference]: Start difference. First operand 167 states and 198 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states 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 07:35:49,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:35:49,523 INFO L93 Difference]: Finished difference Result 157 states and 168 transitions. [2021-11-20 07:35:49,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:35:49,524 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2021-11-20 07:35:49,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:35:49,532 INFO L225 Difference]: With dead ends: 157 [2021-11-20 07:35:49,532 INFO L226 Difference]: Without dead ends: 157 [2021-11-20 07:35:49,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:35:49,534 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 181 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:35:49,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 74 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:35:49,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-11-20 07:35:49,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 152. [2021-11-20 07:35:49,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 109 states have (on average 1.5321100917431192) internal successors, (167), 151 states have internal predecessors, (167), 0 states have call successors, (0), 0 states 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 07:35:49,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 167 transitions. [2021-11-20 07:35:49,551 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 167 transitions. Word has length 9 [2021-11-20 07:35:49,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:35:49,556 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 167 transitions. [2021-11-20 07:35:49,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states 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 07:35:49,557 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 167 transitions. [2021-11-20 07:35:49,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 07:35:49,558 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:35:49,558 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:35:49,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 07:35:49,558 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 60 more)] === [2021-11-20 07:35:49,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:35:49,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1363413642, now seen corresponding path program 1 times [2021-11-20 07:35:49,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:35:49,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994114919] [2021-11-20 07:35:49,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:35:49,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:35:49,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:35:49,685 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 07:35:49,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:35:49,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994114919] [2021-11-20 07:35:49,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994114919] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:35:49,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:35:49,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:35:49,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829834699] [2021-11-20 07:35:49,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:35:49,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:35:49,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:35:49,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:35:49,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:35:49,688 INFO L87 Difference]: Start difference. First operand 152 states and 167 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:35:49,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:35:49,852 INFO L93 Difference]: Finished difference Result 151 states and 165 transitions. [2021-11-20 07:35:49,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:35:49,853 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-20 07:35:49,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:35:49,855 INFO L225 Difference]: With dead ends: 151 [2021-11-20 07:35:49,855 INFO L226 Difference]: Without dead ends: 151 [2021-11-20 07:35:49,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:35:49,856 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 6 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:35:49,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 278 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:35:49,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-11-20 07:35:49,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2021-11-20 07:35:49,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 109 states have (on average 1.5137614678899083) internal successors, (165), 150 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 07:35:49,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 165 transitions. [2021-11-20 07:35:49,868 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 165 transitions. Word has length 12 [2021-11-20 07:35:49,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:35:49,868 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 165 transitions. [2021-11-20 07:35:49,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:35:49,869 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 165 transitions. [2021-11-20 07:35:49,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 07:35:49,871 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:35:49,871 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:35:49,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 07:35:49,871 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 60 more)] === [2021-11-20 07:35:49,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:35:49,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1363413643, now seen corresponding path program 1 times [2021-11-20 07:35:49,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:35:49,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487999358] [2021-11-20 07:35:49,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:35:49,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:35:49,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:35:49,968 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 07:35:49,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:35:49,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487999358] [2021-11-20 07:35:49,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487999358] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:35:49,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:35:49,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:35:49,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439339443] [2021-11-20 07:35:49,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:35:49,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:35:49,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:35:49,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:35:49,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:35:49,974 INFO L87 Difference]: Start difference. First operand 151 states and 165 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:35:50,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:35:50,116 INFO L93 Difference]: Finished difference Result 150 states and 163 transitions. [2021-11-20 07:35:50,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:35:50,117 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-20 07:35:50,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:35:50,118 INFO L225 Difference]: With dead ends: 150 [2021-11-20 07:35:50,118 INFO L226 Difference]: Without dead ends: 150 [2021-11-20 07:35:50,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:35:50,120 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 7 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:35:50,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 283 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:35:50,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-11-20 07:35:50,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2021-11-20 07:35:50,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 109 states have (on average 1.4954128440366972) internal successors, (163), 149 states have internal predecessors, (163), 0 states have call successors, (0), 0 states 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 07:35:50,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 163 transitions. [2021-11-20 07:35:50,128 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 163 transitions. Word has length 12 [2021-11-20 07:35:50,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:35:50,128 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 163 transitions. [2021-11-20 07:35:50,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:35:50,128 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 163 transitions. [2021-11-20 07:35:50,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 07:35:50,129 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:35:50,129 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:35:50,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 07:35:50,129 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 60 more)] === [2021-11-20 07:35:50,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:35:50,130 INFO L85 PathProgramCache]: Analyzing trace with hash -896738186, now seen corresponding path program 1 times [2021-11-20 07:35:50,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:35:50,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688194817] [2021-11-20 07:35:50,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:35:50,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:35:50,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:35:50,189 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 07:35:50,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:35:50,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688194817] [2021-11-20 07:35:50,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688194817] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:35:50,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:35:50,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:35:50,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107441096] [2021-11-20 07:35:50,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:35:50,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:35:50,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:35:50,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:35:50,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:35:50,191 INFO L87 Difference]: Start difference. First operand 150 states and 163 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states 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 07:35:50,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:35:50,338 INFO L93 Difference]: Finished difference Result 149 states and 161 transitions. [2021-11-20 07:35:50,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:35:50,338 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2021-11-20 07:35:50,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:35:50,339 INFO L225 Difference]: With dead ends: 149 [2021-11-20 07:35:50,339 INFO L226 Difference]: Without dead ends: 149 [2021-11-20 07:35:50,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:35:50,341 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 11 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:35:50,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 275 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:35:50,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-11-20 07:35:50,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2021-11-20 07:35:50,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 109 states have (on average 1.4770642201834863) internal successors, (161), 148 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 07:35:50,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 161 transitions. [2021-11-20 07:35:50,347 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 161 transitions. Word has length 14 [2021-11-20 07:35:50,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:35:50,347 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 161 transitions. [2021-11-20 07:35:50,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states 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 07:35:50,347 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 161 transitions. [2021-11-20 07:35:50,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 07:35:50,348 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:35:50,348 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:35:50,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 07:35:50,348 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 60 more)] === [2021-11-20 07:35:50,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:35:50,349 INFO L85 PathProgramCache]: Analyzing trace with hash -896738185, now seen corresponding path program 1 times [2021-11-20 07:35:50,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:35:50,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55146455] [2021-11-20 07:35:50,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:35:50,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:35:50,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:35:50,413 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 07:35:50,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:35:50,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55146455] [2021-11-20 07:35:50,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55146455] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:35:50,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:35:50,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:35:50,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209621269] [2021-11-20 07:35:50,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:35:50,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:35:50,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:35:50,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:35:50,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:35:50,416 INFO L87 Difference]: Start difference. First operand 149 states and 161 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states 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 07:35:50,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:35:50,572 INFO L93 Difference]: Finished difference Result 148 states and 159 transitions. [2021-11-20 07:35:50,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:35:50,573 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2021-11-20 07:35:50,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:35:50,574 INFO L225 Difference]: With dead ends: 148 [2021-11-20 07:35:50,574 INFO L226 Difference]: Without dead ends: 148 [2021-11-20 07:35:50,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:35:50,576 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 4 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:35:50,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 273 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:35:50,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-20 07:35:50,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-11-20 07:35:50,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 109 states have (on average 1.4587155963302751) internal successors, (159), 147 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 07:35:50,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 159 transitions. [2021-11-20 07:35:50,581 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 159 transitions. Word has length 14 [2021-11-20 07:35:50,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:35:50,582 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 159 transitions. [2021-11-20 07:35:50,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states 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 07:35:50,582 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 159 transitions. [2021-11-20 07:35:50,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 07:35:50,583 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:35:50,583 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:35:50,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 07:35:50,584 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 60 more)] === [2021-11-20 07:35:50,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:35:50,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1546362871, now seen corresponding path program 1 times [2021-11-20 07:35:50,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:35:50,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355343664] [2021-11-20 07:35:50,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:35:50,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:35:50,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:35:50,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:35:50,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:35:50,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355343664] [2021-11-20 07:35:50,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355343664] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:35:50,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:35:50,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 07:35:50,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651187322] [2021-11-20 07:35:50,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:35:50,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 07:35:50,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:35:50,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 07:35:50,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-20 07:35:50,708 INFO L87 Difference]: Start difference. First operand 148 states and 159 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:35:50,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:35:50,980 INFO L93 Difference]: Finished difference Result 152 states and 159 transitions. [2021-11-20 07:35:50,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 07:35:50,980 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-20 07:35:50,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:35:50,981 INFO L225 Difference]: With dead ends: 152 [2021-11-20 07:35:50,981 INFO L226 Difference]: Without dead ends: 152 [2021-11-20 07:35:50,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-11-20 07:35:50,983 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 184 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:35:50,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 188 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:35:50,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-20 07:35:50,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 147. [2021-11-20 07:35:50,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 109 states have (on average 1.4495412844036697) internal successors, (158), 146 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 07:35:50,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 158 transitions. [2021-11-20 07:35:50,988 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 158 transitions. Word has length 16 [2021-11-20 07:35:50,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:35:50,988 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 158 transitions. [2021-11-20 07:35:50,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:35:50,988 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 158 transitions. [2021-11-20 07:35:50,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 07:35:50,989 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:35:50,989 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:35:50,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 07:35:50,992 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 60 more)] === [2021-11-20 07:35:50,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:35:50,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1546362872, now seen corresponding path program 1 times [2021-11-20 07:35:51,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:35:51,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237332112] [2021-11-20 07:35:51,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:35:51,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:35:51,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:35:51,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:35:51,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:35:51,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237332112] [2021-11-20 07:35:51,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237332112] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:35:51,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:35:51,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 07:35:51,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282988067] [2021-11-20 07:35:51,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:35:51,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 07:35:51,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:35:51,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 07:35:51,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:35:51,226 INFO L87 Difference]: Start difference. First operand 147 states and 158 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:35:51,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:35:51,764 INFO L93 Difference]: Finished difference Result 149 states and 156 transitions. [2021-11-20 07:35:51,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 07:35:51,765 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-20 07:35:51,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:35:51,766 INFO L225 Difference]: With dead ends: 149 [2021-11-20 07:35:51,766 INFO L226 Difference]: Without dead ends: 149 [2021-11-20 07:35:51,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2021-11-20 07:35:51,768 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 182 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:35:51,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 282 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 07:35:51,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-11-20 07:35:51,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 123. [2021-11-20 07:35:51,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 93 states have (on average 1.4301075268817205) internal successors, (133), 122 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 07:35:51,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 133 transitions. [2021-11-20 07:35:51,773 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 133 transitions. Word has length 16 [2021-11-20 07:35:51,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:35:51,773 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 133 transitions. [2021-11-20 07:35:51,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:35:51,774 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 133 transitions. [2021-11-20 07:35:51,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 07:35:51,775 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:35:51,775 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:35:51,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 07:35:51,776 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 60 more)] === [2021-11-20 07:35:51,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:35:51,777 INFO L85 PathProgramCache]: Analyzing trace with hash -30672293, now seen corresponding path program 1 times [2021-11-20 07:35:51,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:35:51,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747484926] [2021-11-20 07:35:51,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:35:51,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:35:51,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:35:51,872 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 07:35:51,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:35:51,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747484926] [2021-11-20 07:35:51,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747484926] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:35:51,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:35:51,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:35:51,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145223860] [2021-11-20 07:35:51,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:35:51,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 07:35:51,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:35:51,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 07:35:51,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:35:51,876 INFO L87 Difference]: Start difference. First operand 123 states and 133 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states 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 07:35:52,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:35:52,201 INFO L93 Difference]: Finished difference Result 126 states and 137 transitions. [2021-11-20 07:35:52,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 07:35:52,203 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2021-11-20 07:35:52,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:35:52,204 INFO L225 Difference]: With dead ends: 126 [2021-11-20 07:35:52,204 INFO L226 Difference]: Without dead ends: 126 [2021-11-20 07:35:52,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:35:52,205 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 63 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:35:52,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 253 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:35:52,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-11-20 07:35:52,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 122. [2021-11-20 07:35:52,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 93 states have (on average 1.4193548387096775) internal successors, (132), 121 states have internal predecessors, (132), 0 states have call successors, (0), 0 states 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 07:35:52,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 132 transitions. [2021-11-20 07:35:52,217 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 132 transitions. Word has length 17 [2021-11-20 07:35:52,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:35:52,217 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 132 transitions. [2021-11-20 07:35:52,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states 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 07:35:52,218 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 132 transitions. [2021-11-20 07:35:52,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 07:35:52,220 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:35:52,220 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:35:52,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 07:35:52,220 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 60 more)] === [2021-11-20 07:35:52,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:35:52,221 INFO L85 PathProgramCache]: Analyzing trace with hash -30672292, now seen corresponding path program 1 times [2021-11-20 07:35:52,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:35:52,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064430421] [2021-11-20 07:35:52,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:35:52,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:35:52,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:35:52,403 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 07:35:52,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:35:52,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064430421] [2021-11-20 07:35:52,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064430421] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:35:52,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:35:52,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:35:52,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192174769] [2021-11-20 07:35:52,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:35:52,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 07:35:52,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:35:52,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 07:35:52,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:35:52,406 INFO L87 Difference]: Start difference. First operand 122 states and 132 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states 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 07:35:52,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:35:52,702 INFO L93 Difference]: Finished difference Result 125 states and 136 transitions. [2021-11-20 07:35:52,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 07:35:52,703 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2021-11-20 07:35:52,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:35:52,704 INFO L225 Difference]: With dead ends: 125 [2021-11-20 07:35:52,704 INFO L226 Difference]: Without dead ends: 125 [2021-11-20 07:35:52,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:35:52,705 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 62 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:35:52,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 263 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:35:52,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-11-20 07:35:52,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 121. [2021-11-20 07:35:52,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 93 states have (on average 1.4086021505376345) internal successors, (131), 120 states have internal predecessors, (131), 0 states have call successors, (0), 0 states 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 07:35:52,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 131 transitions. [2021-11-20 07:35:52,714 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 131 transitions. Word has length 17 [2021-11-20 07:35:52,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:35:52,714 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 131 transitions. [2021-11-20 07:35:52,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states 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 07:35:52,715 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 131 transitions. [2021-11-20 07:35:52,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 07:35:52,717 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:35:52,717 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:35:52,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 07:35:52,717 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 60 more)] === [2021-11-20 07:35:52,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:35:52,718 INFO L85 PathProgramCache]: Analyzing trace with hash -3964873, now seen corresponding path program 1 times [2021-11-20 07:35:52,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:35:52,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268915748] [2021-11-20 07:35:52,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:35:52,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:35:52,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:35:52,794 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 07:35:52,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:35:52,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268915748] [2021-11-20 07:35:52,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268915748] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:35:52,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:35:52,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 07:35:52,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111665210] [2021-11-20 07:35:52,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:35:52,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:35:52,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:35:52,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:35:52,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:35:52,797 INFO L87 Difference]: Start difference. First operand 121 states and 131 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states 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 07:35:52,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:35:52,906 INFO L93 Difference]: Finished difference Result 123 states and 134 transitions. [2021-11-20 07:35:52,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:35:52,907 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-11-20 07:35:52,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:35:52,908 INFO L225 Difference]: With dead ends: 123 [2021-11-20 07:35:52,908 INFO L226 Difference]: Without dead ends: 123 [2021-11-20 07:35:52,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:35:52,909 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 153 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:35:52,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 113 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:35:52,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-11-20 07:35:52,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2021-11-20 07:35:52,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 92 states have (on average 1.4021739130434783) 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 07:35:52,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 129 transitions. [2021-11-20 07:35:52,913 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 129 transitions. Word has length 18 [2021-11-20 07:35:52,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:35:52,913 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 129 transitions. [2021-11-20 07:35:52,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states 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 07:35:52,913 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 129 transitions. [2021-11-20 07:35:52,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 07:35:52,914 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:35:52,914 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:35:52,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-20 07:35:52,915 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 60 more)] === [2021-11-20 07:35:52,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:35:52,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1069806106, now seen corresponding path program 1 times [2021-11-20 07:35:52,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:35:52,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717388082] [2021-11-20 07:35:52,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:35:52,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:35:52,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:35:52,949 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 07:35:52,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:35:52,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717388082] [2021-11-20 07:35:52,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717388082] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:35:52,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:35:52,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:35:52,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067245062] [2021-11-20 07:35:52,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:35:52,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:35:52,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:35:52,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:35:52,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:35:52,952 INFO L87 Difference]: Start difference. First operand 119 states and 129 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states 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 07:35:53,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:35:53,058 INFO L93 Difference]: Finished difference Result 181 states and 186 transitions. [2021-11-20 07:35:53,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:35:53,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 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 07:35:53,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:35:53,060 INFO L225 Difference]: With dead ends: 181 [2021-11-20 07:35:53,060 INFO L226 Difference]: Without dead ends: 181 [2021-11-20 07:35:53,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:35:53,061 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 177 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:35:53,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 135 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:35:53,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-20 07:35:53,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 117. [2021-11-20 07:35:53,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 91 states have (on average 1.3956043956043955) 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 07:35:53,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 127 transitions. [2021-11-20 07:35:53,069 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 127 transitions. Word has length 20 [2021-11-20 07:35:53,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:35:53,070 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 127 transitions. [2021-11-20 07:35:53,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states 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 07:35:53,070 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 127 transitions. [2021-11-20 07:35:53,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-20 07:35:53,071 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:35:53,071 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:35:53,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-20 07:35:53,072 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 60 more)] === [2021-11-20 07:35:53,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:35:53,072 INFO L85 PathProgramCache]: Analyzing trace with hash 684226449, now seen corresponding path program 1 times [2021-11-20 07:35:53,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:35:53,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634521299] [2021-11-20 07:35:53,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:35:53,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:35:53,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:35:53,405 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 07:35:53,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:35:53,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634521299] [2021-11-20 07:35:53,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634521299] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:35:53,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:35:53,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-20 07:35:53,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679384535] [2021-11-20 07:35:53,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:35:53,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 07:35:53,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:35:53,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 07:35:53,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-20 07:35:53,408 INFO L87 Difference]: Start difference. First operand 117 states and 127 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:35:53,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:35:53,881 INFO L93 Difference]: Finished difference Result 225 states and 229 transitions. [2021-11-20 07:35:53,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 07:35:53,882 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-20 07:35:53,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:35:53,883 INFO L225 Difference]: With dead ends: 225 [2021-11-20 07:35:53,883 INFO L226 Difference]: Without dead ends: 225 [2021-11-20 07:35:53,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=257, Unknown=0, NotChecked=0, Total=380 [2021-11-20 07:35:53,885 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 417 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:35:53,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [417 Valid, 313 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 07:35:53,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-11-20 07:35:53,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 133. [2021-11-20 07:35:53,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 107 states have (on average 1.3457943925233644) internal successors, (144), 132 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 07:35:53,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 144 transitions. [2021-11-20 07:35:53,890 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 144 transitions. Word has length 25 [2021-11-20 07:35:53,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:35:53,890 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 144 transitions. [2021-11-20 07:35:53,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:35:53,890 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 144 transitions. [2021-11-20 07:35:53,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-20 07:35:53,892 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:35:53,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:35:53,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-20 07:35:53,892 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 60 more)] === [2021-11-20 07:35:53,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:35:53,893 INFO L85 PathProgramCache]: Analyzing trace with hash 684193678, now seen corresponding path program 1 times [2021-11-20 07:35:53,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:35:53,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506414433] [2021-11-20 07:35:53,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:35:53,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:35:53,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:35:53,929 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 07:35:53,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:35:53,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506414433] [2021-11-20 07:35:53,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506414433] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:35:53,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:35:53,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 07:35:53,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49097851] [2021-11-20 07:35:53,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:35:53,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:35:53,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:35:53,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:35:53,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:35:53,932 INFO L87 Difference]: Start difference. First operand 133 states and 144 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:35:54,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:35:54,029 INFO L93 Difference]: Finished difference Result 131 states and 141 transitions. [2021-11-20 07:35:54,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:35:54,030 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-20 07:35:54,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:35:54,031 INFO L225 Difference]: With dead ends: 131 [2021-11-20 07:35:54,031 INFO L226 Difference]: Without dead ends: 131 [2021-11-20 07:35:54,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:35:54,032 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 8 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:35:54,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 236 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:35:54,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-11-20 07:35:54,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2021-11-20 07:35:54,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 106 states have (on average 1.330188679245283) internal successors, (141), 130 states have internal predecessors, (141), 0 states have call successors, (0), 0 states 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 07:35:54,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 141 transitions. [2021-11-20 07:35:54,037 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 141 transitions. Word has length 25 [2021-11-20 07:35:54,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:35:54,038 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 141 transitions. [2021-11-20 07:35:54,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:35:54,038 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 141 transitions. [2021-11-20 07:35:54,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-20 07:35:54,045 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:35:54,045 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:35:54,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-20 07:35:54,046 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 60 more)] === [2021-11-20 07:35:54,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:35:54,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1096862923, now seen corresponding path program 1 times [2021-11-20 07:35:54,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:35:54,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38796195] [2021-11-20 07:35:54,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:35:54,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:35:54,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:35:54,246 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 07:35:54,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:35:54,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38796195] [2021-11-20 07:35:54,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38796195] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:35:54,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:35:54,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:35:54,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459761096] [2021-11-20 07:35:54,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:35:54,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 07:35:54,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:35:54,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 07:35:54,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-20 07:35:54,250 INFO L87 Difference]: Start difference. First operand 131 states and 141 transitions. Second operand has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states 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 07:35:54,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:35:54,736 INFO L93 Difference]: Finished difference Result 185 states and 190 transitions. [2021-11-20 07:35:54,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 07:35:54,736 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-11-20 07:35:54,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:35:54,738 INFO L225 Difference]: With dead ends: 185 [2021-11-20 07:35:54,738 INFO L226 Difference]: Without dead ends: 185 [2021-11-20 07:35:54,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2021-11-20 07:35:54,739 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 188 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:35:54,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 329 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 07:35:54,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-11-20 07:35:54,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 137. [2021-11-20 07:35:54,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 112 states have (on average 1.3214285714285714) internal successors, (148), 136 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 07:35:54,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 148 transitions. [2021-11-20 07:35:54,743 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 148 transitions. Word has length 28 [2021-11-20 07:35:54,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:35:54,743 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 148 transitions. [2021-11-20 07:35:54,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states 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 07:35:54,744 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 148 transitions. [2021-11-20 07:35:54,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-20 07:35:54,744 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:35:54,744 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:35:54,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-20 07:35:54,745 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 60 more)] === [2021-11-20 07:35:54,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:35:54,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1096862922, now seen corresponding path program 1 times [2021-11-20 07:35:54,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:35:54,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653688610] [2021-11-20 07:35:54,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:35:54,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:35:54,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:35:54,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:35:54,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:35:54,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653688610] [2021-11-20 07:35:54,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653688610] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:35:54,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:35:54,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:35:54,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826377934] [2021-11-20 07:35:54,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:35:54,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 07:35:54,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:35:54,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 07:35:54,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-20 07:35:54,992 INFO L87 Difference]: Start difference. First operand 137 states and 148 transitions. Second operand has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states 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 07:35:55,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:35:55,529 INFO L93 Difference]: Finished difference Result 217 states and 221 transitions. [2021-11-20 07:35:55,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 07:35:55,529 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-11-20 07:35:55,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:35:55,531 INFO L225 Difference]: With dead ends: 217 [2021-11-20 07:35:55,531 INFO L226 Difference]: Without dead ends: 217 [2021-11-20 07:35:55,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2021-11-20 07:35:55,532 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 170 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:35:55,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 337 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 07:35:55,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-20 07:35:55,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 137. [2021-11-20 07:35:55,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 112 states have (on average 1.3125) internal successors, (147), 136 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 07:35:55,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 147 transitions. [2021-11-20 07:35:55,537 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 147 transitions. Word has length 28 [2021-11-20 07:35:55,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:35:55,537 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 147 transitions. [2021-11-20 07:35:55,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states 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 07:35:55,538 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 147 transitions. [2021-11-20 07:35:55,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-20 07:35:55,538 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:35:55,538 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:35:55,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-20 07:35:55,539 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 60 more)] === [2021-11-20 07:35:55,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:35:55,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1818276907, now seen corresponding path program 1 times [2021-11-20 07:35:55,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:35:55,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302012372] [2021-11-20 07:35:55,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:35:55,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:35:55,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:35:55,812 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 07:35:55,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:35:55,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302012372] [2021-11-20 07:35:55,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302012372] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:35:55,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:35:55,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:35:55,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750090121] [2021-11-20 07:35:55,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:35:55,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:35:55,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:35:55,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:35:55,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:35:55,815 INFO L87 Difference]: Start difference. First operand 137 states and 147 transitions. Second operand has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states 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 07:35:56,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:35:56,504 INFO L93 Difference]: Finished difference Result 215 states and 219 transitions. [2021-11-20 07:35:56,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 07:35:56,505 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 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 07:35:56,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:35:56,506 INFO L225 Difference]: With dead ends: 215 [2021-11-20 07:35:56,506 INFO L226 Difference]: Without dead ends: 215 [2021-11-20 07:35:56,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2021-11-20 07:35:56,507 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 361 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 07:35:56,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [361 Valid, 443 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 07:35:56,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-11-20 07:35:56,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 138. [2021-11-20 07:35:56,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 113 states have (on average 1.3097345132743363) internal successors, (148), 137 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 07:35:56,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 148 transitions. [2021-11-20 07:35:56,513 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 148 transitions. Word has length 30 [2021-11-20 07:35:56,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:35:56,513 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 148 transitions. [2021-11-20 07:35:56,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states 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 07:35:56,514 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 148 transitions. [2021-11-20 07:35:56,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-20 07:35:56,514 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:35:56,514 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:35:56,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-20 07:35:56,515 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 60 more)] === [2021-11-20 07:35:56,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:35:56,515 INFO L85 PathProgramCache]: Analyzing trace with hash -245371248, now seen corresponding path program 1 times [2021-11-20 07:35:56,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:35:56,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184410309] [2021-11-20 07:35:56,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:35:56,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:35:56,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:35:56,554 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 07:35:56,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:35:56,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184410309] [2021-11-20 07:35:56,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184410309] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:35:56,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:35:56,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 07:35:56,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438096442] [2021-11-20 07:35:56,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:35:56,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:35:56,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:35:56,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:35:56,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:35:56,557 INFO L87 Difference]: Start difference. First operand 138 states and 148 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:35:56,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:35:56,645 INFO L93 Difference]: Finished difference Result 136 states and 145 transitions. [2021-11-20 07:35:56,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:35:56,646 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-20 07:35:56,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:35:56,650 INFO L225 Difference]: With dead ends: 136 [2021-11-20 07:35:56,650 INFO L226 Difference]: Without dead ends: 136 [2021-11-20 07:35:56,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:35:56,651 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 21 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:35:56,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 211 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:35:56,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-11-20 07:35:56,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2021-11-20 07:35:56,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 112 states have (on average 1.2946428571428572) internal successors, (145), 135 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 07:35:56,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 145 transitions. [2021-11-20 07:35:56,662 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 145 transitions. Word has length 36 [2021-11-20 07:35:56,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:35:56,663 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 145 transitions. [2021-11-20 07:35:56,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:35:56,663 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 145 transitions. [2021-11-20 07:35:56,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-20 07:35:56,664 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:35:56,664 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:35:56,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-20 07:35:56,665 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 60 more)] === [2021-11-20 07:35:56,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:35:56,665 INFO L85 PathProgramCache]: Analyzing trace with hash 984809453, now seen corresponding path program 1 times [2021-11-20 07:35:56,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:35:56,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469619001] [2021-11-20 07:35:56,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:35:56,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:35:56,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:35:56,727 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 07:35:56,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:35:56,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469619001] [2021-11-20 07:35:56,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469619001] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:35:56,728 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:35:56,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 07:35:56,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199986201] [2021-11-20 07:35:56,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:35:56,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:35:56,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:35:56,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:35:56,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:35:56,730 INFO L87 Difference]: Start difference. First operand 136 states and 145 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states 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 07:35:56,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:35:56,838 INFO L93 Difference]: Finished difference Result 152 states and 157 transitions. [2021-11-20 07:35:56,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:35:56,839 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2021-11-20 07:35:56,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:35:56,840 INFO L225 Difference]: With dead ends: 152 [2021-11-20 07:35:56,840 INFO L226 Difference]: Without dead ends: 152 [2021-11-20 07:35:56,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:35:56,841 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 135 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:35:56,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 92 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:35:56,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-20 07:35:56,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 138. [2021-11-20 07:35:56,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 114 states have (on average 1.2894736842105263) internal successors, (147), 137 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 07:35:56,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 147 transitions. [2021-11-20 07:35:56,845 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 147 transitions. Word has length 37 [2021-11-20 07:35:56,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:35:56,845 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 147 transitions. [2021-11-20 07:35:56,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states 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 07:35:56,846 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 147 transitions. [2021-11-20 07:35:56,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-20 07:35:56,846 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:35:56,846 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:35:56,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-20 07:35:56,849 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 60 more)] === [2021-11-20 07:35:56,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:35:56,849 INFO L85 PathProgramCache]: Analyzing trace with hash -27234752, now seen corresponding path program 1 times [2021-11-20 07:35:56,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:35:56,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528945162] [2021-11-20 07:35:56,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:35:56,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:35:56,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:35:57,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:35:57,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:35:57,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528945162] [2021-11-20 07:35:57,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528945162] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:35:57,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401270669] [2021-11-20 07:35:57,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:35:57,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:35:57,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bd1565-6ccd-4b08-a890-0a09b457d572/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:35:57,436 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bd1565-6ccd-4b08-a890-0a09b457d572/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:35:57,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bd1565-6ccd-4b08-a890-0a09b457d572/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 07:35:57,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:35:57,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-20 07:35:57,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:35:57,620 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 07:35:57,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 07:35:57,792 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 07:35:57,793 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 07:35:57,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:35:57,834 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 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-20 07:35:57,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-20 07:35:58,014 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-20 07:35:58,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 52 [2021-11-20 07:35:58,032 INFO L354 Elim1Store]: treesize reduction 53, result has 14.5 percent of original size [2021-11-20 07:35:58,032 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 62 treesize of output 34 [2021-11-20 07:35:58,157 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-20 07:35:58,157 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 19 [2021-11-20 07:35:58,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:35:58,206 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 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-20 07:35:58,369 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 0 case distinctions, treesize of input 32 treesize of output 25 [2021-11-20 07:35:58,446 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-20 07:35:58,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-11-20 07:35:58,530 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-20 07:35:58,531 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 1 case distinctions, treesize of input 34 treesize of output 25 [2021-11-20 07:35:58,539 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 20 treesize of output 16 [2021-11-20 07:35:58,709 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-20 07:35:58,710 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 65 [2021-11-20 07:35:58,733 INFO L354 Elim1Store]: treesize reduction 104, result has 15.4 percent of original size [2021-11-20 07:35:58,733 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 79 treesize of output 54 [2021-11-20 07:35:58,848 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-20 07:35:58,848 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 31 [2021-11-20 07:35:58,952 INFO L354 Elim1Store]: treesize reduction 84, result has 18.4 percent of original size [2021-11-20 07:35:58,952 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 44 treesize of output 46 [2021-11-20 07:35:59,447 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-20 07:35:59,447 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 45 treesize of output 25 [2021-11-20 07:35:59,454 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:35:59,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:36:02,021 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem8#1.offset| Int)) (= (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (store |c_#memory_int| .cse0 (store (select |c_#memory_int| .cse0) (+ |ULTIMATE.start_main_#t~mem8#1.offset| 8) 2))) |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 8)) 0)) is different from false [2021-11-20 07:36:03,039 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem8#1.offset| Int) (|ULTIMATE.start_main_#t~mem7#1.offset| Int) (v_DerPreprocessor_1 Int)) (= (select (select (let ((.cse2 (+ |ULTIMATE.start_main_#t~mem7#1.offset| 4))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem7#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_#t~mem7#1.base|) .cse2 v_DerPreprocessor_1))) (.cse1 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem7#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem7#1.base|) .cse2 |c_ULTIMATE.start_main_~x~0#1.base|)) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (store .cse0 .cse1 (store (select .cse0 .cse1) (+ |ULTIMATE.start_main_#t~mem8#1.offset| 8) 2)))) |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 8)) 0)) is different from false [2021-11-20 07:36:03,917 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem8#1.offset| Int) (|ULTIMATE.start_main_#t~mem7#1.offset| Int) (v_DerPreprocessor_1 Int)) (= (select (select (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|)) (.cse3 (+ |ULTIMATE.start_main_#t~mem7#1.offset| 4))) (let ((.cse0 (store |c_#memory_int| .cse2 (store (select |c_#memory_int| .cse2) .cse3 v_DerPreprocessor_1))) (.cse1 (select (select (store |c_#memory_$Pointer$.base| .cse2 (store (select |c_#memory_$Pointer$.base| .cse2) .cse3 |c_ULTIMATE.start_main_~x~0#1.base|)) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (store .cse0 .cse1 (store (select .cse0 .cse1) (+ |ULTIMATE.start_main_#t~mem8#1.offset| 8) 2)))) |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 8)) 0)) is different from false [2021-11-20 07:36:16,790 INFO L354 Elim1Store]: treesize reduction 14, result has 44.0 percent of original size [2021-11-20 07:36:16,791 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 314 treesize of output 316 [2021-11-20 07:36:19,117 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem4#1.offset| Int) (|v_ULTIMATE.start_main_~x~0#1.offset_58| Int) (|ULTIMATE.start_main_#t~mem8#1.offset| Int) (|v_ULTIMATE.start_main_#t~malloc6#1.base_6| Int) (|ULTIMATE.start_main_#t~mem7#1.offset| Int) (v_DerPreprocessor_4 Int) (v_DerPreprocessor_3 Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_DerPreprocessor_4)))) (let ((.cse1 (+ |ULTIMATE.start_main_#t~mem7#1.offset| 4)) (.cse2 (+ |ULTIMATE.start_main_#t~mem8#1.offset| 8)) (.cse6 (store (select .cse5 |c_ULTIMATE.start_main_#t~malloc3#1.base|) (+ |ULTIMATE.start_main_#t~mem4#1.offset| 4) v_DerPreprocessor_3)) (.cse4 (+ 8 |v_ULTIMATE.start_main_~x~0#1.offset_58|)) (.cse7 (+ |c_ULTIMATE.start_main_~head~0#1.offset| 8))) (or (and (= |c_ULTIMATE.start_main_#t~malloc3#1.base| |c_ULTIMATE.start_main_~x~0#1.base|) (= (select (select (let ((.cse0 (let ((.cse3 (store .cse5 |c_ULTIMATE.start_main_#t~malloc3#1.base| .cse6))) (store .cse3 |c_ULTIMATE.start_main_~x~0#1.base| (store (store (select .cse3 |c_ULTIMATE.start_main_~x~0#1.base|) .cse4 1) |v_ULTIMATE.start_main_~x~0#1.offset_58| v_DerPreprocessor_2))))) (store .cse0 |v_ULTIMATE.start_main_#t~malloc6#1.base_6| (store (store (select .cse0 |v_ULTIMATE.start_main_#t~malloc6#1.base_6|) .cse1 v_DerPreprocessor_1) .cse2 2))) |c_ULTIMATE.start_main_~head~0#1.base|) .cse7) 0)) (= (select (select (let ((.cse8 (store .cse5 |c_ULTIMATE.start_main_#t~malloc3#1.base| (store (store .cse6 .cse4 1) |v_ULTIMATE.start_main_~x~0#1.offset_58| v_DerPreprocessor_2)))) (store .cse8 |v_ULTIMATE.start_main_#t~malloc6#1.base_6| (store (store (select .cse8 |v_ULTIMATE.start_main_#t~malloc6#1.base_6|) .cse1 v_DerPreprocessor_1) .cse2 2))) |c_ULTIMATE.start_main_~head~0#1.base|) .cse7) 0) (= |v_ULTIMATE.start_main_#t~malloc6#1.base_6| |c_ULTIMATE.start_main_~x~0#1.base|) (= |c_ULTIMATE.start_main_#t~malloc3#1.base| |v_ULTIMATE.start_main_#t~malloc6#1.base_6|))))) is different from false [2021-11-20 07:36:56,677 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-20 07:36:56,677 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:36:56,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-11-20 07:36:56,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074167614] [2021-11-20 07:36:56,678 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-20 07:36:56,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-20 07:36:56,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:36:56,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 07:36:56,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=1603, Unknown=30, NotChecked=348, Total=2256 [2021-11-20 07:36:56,681 INFO L87 Difference]: Start difference. First operand 138 states and 147 transitions. Second operand has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states 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 07:36:58,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:36:58,132 INFO L93 Difference]: Finished difference Result 256 states and 265 transitions. [2021-11-20 07:36:58,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-20 07:36:58,134 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2021-11-20 07:36:58,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:36:58,136 INFO L225 Difference]: With dead ends: 256 [2021-11-20 07:36:58,136 INFO L226 Difference]: Without dead ends: 256 [2021-11-20 07:36:58,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 60 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1012 ImplicationChecksByTransitivity, 56.2s TimeCoverageRelationStatistics Valid=523, Invalid=2769, Unknown=30, NotChecked=460, Total=3782 [2021-11-20 07:36:58,139 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 372 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 07:36:58,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [372 Valid, 748 Invalid, 1136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 07:36:58,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-11-20 07:36:58,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 166. [2021-11-20 07:36:58,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 142 states have (on average 1.2464788732394365) internal successors, (177), 165 states have internal predecessors, (177), 0 states have call successors, (0), 0 states 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 07:36:58,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 177 transitions. [2021-11-20 07:36:58,144 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 177 transitions. Word has length 37 [2021-11-20 07:36:58,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:36:58,145 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 177 transitions. [2021-11-20 07:36:58,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states 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 07:36:58,145 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 177 transitions. [2021-11-20 07:36:58,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-20 07:36:58,145 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:36:58,146 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:36:58,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bd1565-6ccd-4b08-a890-0a09b457d572/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 07:36:58,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bd1565-6ccd-4b08-a890-0a09b457d572/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:36:58,347 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 60 more)] === [2021-11-20 07:36:58,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:36:58,347 INFO L85 PathProgramCache]: Analyzing trace with hash 421565270, now seen corresponding path program 1 times [2021-11-20 07:36:58,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:36:58,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171832362] [2021-11-20 07:36:58,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:36:58,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:36:58,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:58,562 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 07:36:58,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:36:58,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171832362] [2021-11-20 07:36:58,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171832362] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:36:58,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:36:58,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:36:58,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199769372] [2021-11-20 07:36:58,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:36:58,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 07:36:58,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:36:58,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 07:36:58,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-20 07:36:58,564 INFO L87 Difference]: Start difference. First operand 166 states and 177 transitions. Second operand has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states 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 07:36:59,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:36:59,069 INFO L93 Difference]: Finished difference Result 225 states and 231 transitions. [2021-11-20 07:36:59,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 07:36:59,069 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2021-11-20 07:36:59,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:36:59,071 INFO L225 Difference]: With dead ends: 225 [2021-11-20 07:36:59,071 INFO L226 Difference]: Without dead ends: 225 [2021-11-20 07:36:59,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2021-11-20 07:36:59,072 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 195 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:36:59,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 362 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 07:36:59,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-11-20 07:36:59,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 175. [2021-11-20 07:36:59,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 151 states have (on average 1.2384105960264902) internal successors, (187), 174 states have internal predecessors, (187), 0 states have call successors, (0), 0 states 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 07:36:59,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 187 transitions. [2021-11-20 07:36:59,078 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 187 transitions. Word has length 38 [2021-11-20 07:36:59,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:36:59,079 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 187 transitions. [2021-11-20 07:36:59,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states 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 07:36:59,079 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 187 transitions. [2021-11-20 07:36:59,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-20 07:36:59,080 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:36:59,080 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:36:59,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-20 07:36:59,080 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 60 more)] === [2021-11-20 07:36:59,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:36:59,081 INFO L85 PathProgramCache]: Analyzing trace with hash 183621750, now seen corresponding path program 1 times [2021-11-20 07:36:59,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:36:59,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971268369] [2021-11-20 07:36:59,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:36:59,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:36:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:59,267 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 07:36:59,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:36:59,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971268369] [2021-11-20 07:36:59,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971268369] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:36:59,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:36:59,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:36:59,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213639030] [2021-11-20 07:36:59,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:36:59,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 07:36:59,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:36:59,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 07:36:59,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-20 07:36:59,269 INFO L87 Difference]: Start difference. First operand 175 states and 187 transitions. Second operand has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states 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 07:36:59,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:36:59,737 INFO L93 Difference]: Finished difference Result 224 states and 230 transitions. [2021-11-20 07:36:59,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 07:36:59,746 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-11-20 07:36:59,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:36:59,747 INFO L225 Difference]: With dead ends: 224 [2021-11-20 07:36:59,747 INFO L226 Difference]: Without dead ends: 224 [2021-11-20 07:36:59,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2021-11-20 07:36:59,748 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 148 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:36:59,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 372 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 07:36:59,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-11-20 07:36:59,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 176. [2021-11-20 07:36:59,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 152 states have (on average 1.236842105263158) internal successors, (188), 175 states have internal predecessors, (188), 0 states have call successors, (0), 0 states 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 07:36:59,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 188 transitions. [2021-11-20 07:36:59,754 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 188 transitions. Word has length 39 [2021-11-20 07:36:59,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:36:59,755 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 188 transitions. [2021-11-20 07:36:59,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states 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 07:36:59,755 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 188 transitions. [2021-11-20 07:36:59,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-20 07:36:59,756 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:36:59,756 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:36:59,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-20 07:36:59,756 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr45REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 60 more)] === [2021-11-20 07:36:59,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:36:59,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1509086814, now seen corresponding path program 1 times [2021-11-20 07:36:59,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:36:59,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353166292] [2021-11-20 07:36:59,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:36:59,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:36:59,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:00,036 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 07:37:00,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:37:00,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353166292] [2021-11-20 07:37:00,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353166292] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:37:00,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627706492] [2021-11-20 07:37:00,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:37:00,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:37:00,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bd1565-6ccd-4b08-a890-0a09b457d572/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:37:00,037 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bd1565-6ccd-4b08-a890-0a09b457d572/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:37:00,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bd1565-6ccd-4b08-a890-0a09b457d572/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 07:37:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:00,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-20 07:37:00,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:37:00,233 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 07:37:00,234 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 07:37:00,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-20 07:37:00,389 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-20 07:37:00,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-11-20 07:37:00,560 INFO L354 Elim1Store]: treesize reduction 74, result has 23.7 percent of original size [2021-11-20 07:37:00,560 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 53 treesize of output 48 [2021-11-20 07:37:01,130 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-20 07:37:01,130 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 31 treesize of output 22 [2021-11-20 07:37:01,165 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 07:37:01,165 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 16 treesize of output 18 [2021-11-20 07:37:01,204 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 07:37:01,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:37:01,265 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:37:01,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 29 [2021-11-20 07:37:18,364 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:37:18,365 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 10092 treesize of output 9708 [2021-11-20 07:37:19,147 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-20 07:37:19,148 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:37:19,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-11-20 07:37:19,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001432159] [2021-11-20 07:37:19,148 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-20 07:37:19,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 07:37:19,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:37:19,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 07:37:19,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1300, Unknown=8, NotChecked=0, Total=1482 [2021-11-20 07:37:19,150 INFO L87 Difference]: Start difference. First operand 176 states and 188 transitions. Second operand has 17 states, 16 states have (on average 2.4375) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states 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 07:37:19,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:37:19,937 INFO L93 Difference]: Finished difference Result 223 states and 229 transitions. [2021-11-20 07:37:19,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 07:37:19,938 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.4375) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-11-20 07:37:19,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:37:19,939 INFO L225 Difference]: With dead ends: 223 [2021-11-20 07:37:19,939 INFO L226 Difference]: Without dead ends: 223 [2021-11-20 07:37:19,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 17.6s TimeCoverageRelationStatistics Valid=280, Invalid=2162, Unknown=8, NotChecked=0, Total=2450 [2021-11-20 07:37:19,941 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 246 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 07:37:19,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 500 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 07:37:19,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-11-20 07:37:19,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 182. [2021-11-20 07:37:19,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 158 states have (on average 1.2341772151898733) internal successors, (195), 181 states have internal predecessors, (195), 0 states have call successors, (0), 0 states 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 07:37:19,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 195 transitions. [2021-11-20 07:37:19,952 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 195 transitions. Word has length 39 [2021-11-20 07:37:19,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:37:19,952 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 195 transitions. [2021-11-20 07:37:19,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.4375) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states 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 07:37:19,953 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 195 transitions. [2021-11-20 07:37:19,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-20 07:37:19,953 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:37:19,953 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:37:19,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bd1565-6ccd-4b08-a890-0a09b457d572/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 07:37:20,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bd1565-6ccd-4b08-a890-0a09b457d572/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-20 07:37:20,154 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr46REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 60 more)] === [2021-11-20 07:37:20,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:37:20,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1509086815, now seen corresponding path program 1 times [2021-11-20 07:37:20,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:37:20,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021495589] [2021-11-20 07:37:20,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:37:20,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:37:20,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:20,499 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 07:37:20,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:37:20,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021495589] [2021-11-20 07:37:20,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021495589] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:37:20,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157796109] [2021-11-20 07:37:20,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:37:20,500 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:37:20,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bd1565-6ccd-4b08-a890-0a09b457d572/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:37:20,504 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bd1565-6ccd-4b08-a890-0a09b457d572/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:37:20,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bd1565-6ccd-4b08-a890-0a09b457d572/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 07:37:20,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:20,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-20 07:37:20,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:37:21,046 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-20 07:37:21,047 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 45 treesize of output 40 [2021-11-20 07:37:21,055 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-20 07:37:21,055 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 34 treesize of output 25 [2021-11-20 07:37:21,136 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 07:37:21,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:37:21,274 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:37:21,275 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 33 treesize of output 37 [2021-11-20 07:37:21,424 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-11-20 07:37:21,424 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 42 treesize of output 33 [2021-11-20 07:37:21,430 INFO L354 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2021-11-20 07:37:21,431 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 33 treesize of output 25 [2021-11-20 07:37:21,588 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 07:37:21,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157796109] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:37:21,588 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:37:21,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 9] total 29 [2021-11-20 07:37:21,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755016204] [2021-11-20 07:37:21,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:37:21,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-20 07:37:21,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:37:21,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-20 07:37:21,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=755, Unknown=0, NotChecked=0, Total=870 [2021-11-20 07:37:21,591 INFO L87 Difference]: Start difference. First operand 182 states and 195 transitions. Second operand has 30 states, 29 states have (on average 3.793103448275862) internal successors, (110), 30 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 07:37:22,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:37:22,988 INFO L93 Difference]: Finished difference Result 236 states and 246 transitions. [2021-11-20 07:37:22,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-20 07:37:22,989 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.793103448275862) internal successors, (110), 30 states have internal predecessors, (110), 0 states have call successors, (0), 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 39 [2021-11-20 07:37:22,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:37:22,990 INFO L225 Difference]: With dead ends: 236 [2021-11-20 07:37:22,991 INFO L226 Difference]: Without dead ends: 236 [2021-11-20 07:37:22,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 65 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=441, Invalid=2009, Unknown=0, NotChecked=0, Total=2450 [2021-11-20 07:37:22,992 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 415 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 135 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 07:37:22,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [415 Valid, 821 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 777 Invalid, 0 Unknown, 135 Unchecked, 0.6s Time] [2021-11-20 07:37:22,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-11-20 07:37:22,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 204. [2021-11-20 07:37:23,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 183 states have (on average 1.2295081967213115) internal successors, (225), 203 states have internal predecessors, (225), 0 states have call successors, (0), 0 states 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 07:37:23,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 225 transitions. [2021-11-20 07:37:23,009 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 225 transitions. Word has length 39 [2021-11-20 07:37:23,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:37:23,009 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 225 transitions. [2021-11-20 07:37:23,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.793103448275862) internal successors, (110), 30 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 07:37:23,010 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 225 transitions. [2021-11-20 07:37:23,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-20 07:37:23,011 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:37:23,011 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:37:23,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bd1565-6ccd-4b08-a890-0a09b457d572/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 07:37:23,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bd1565-6ccd-4b08-a890-0a09b457d572/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-20 07:37:23,225 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 60 more)] === [2021-11-20 07:37:23,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:37:23,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1397307224, now seen corresponding path program 1 times [2021-11-20 07:37:23,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:37:23,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90445021] [2021-11-20 07:37:23,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:37:23,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:37:23,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:23,314 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 07:37:23,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:37:23,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90445021] [2021-11-20 07:37:23,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90445021] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:37:23,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:37:23,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:37:23,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28643706] [2021-11-20 07:37:23,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:37:23,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 07:37:23,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:37:23,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 07:37:23,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:37:23,316 INFO L87 Difference]: Start difference. First operand 204 states and 225 transitions. Second operand has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:37:23,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:37:23,586 INFO L93 Difference]: Finished difference Result 227 states and 240 transitions. [2021-11-20 07:37:23,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 07:37:23,587 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-20 07:37:23,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:37:23,588 INFO L225 Difference]: With dead ends: 227 [2021-11-20 07:37:23,588 INFO L226 Difference]: Without dead ends: 227 [2021-11-20 07:37:23,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-11-20 07:37:23,589 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 87 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:37:23,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 302 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:37:23,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-11-20 07:37:23,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 211. [2021-11-20 07:37:23,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 190 states have (on average 1.231578947368421) internal successors, (234), 210 states have internal predecessors, (234), 0 states have call successors, (0), 0 states 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 07:37:23,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 234 transitions. [2021-11-20 07:37:23,595 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 234 transitions. Word has length 40 [2021-11-20 07:37:23,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:37:23,596 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 234 transitions. [2021-11-20 07:37:23,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:37:23,596 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 234 transitions. [2021-11-20 07:37:23,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-20 07:37:23,597 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:37:23,597 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:37:23,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-20 07:37:23,597 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 60 more)] === [2021-11-20 07:37:23,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:37:23,598 INFO L85 PathProgramCache]: Analyzing trace with hash 402357860, now seen corresponding path program 1 times [2021-11-20 07:37:23,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:37:23,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424328943] [2021-11-20 07:37:23,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:37:23,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:37:23,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:23,980 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:37:23,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:37:23,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424328943] [2021-11-20 07:37:23,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424328943] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:37:23,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319045660] [2021-11-20 07:37:23,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:37:23,981 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:37:23,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bd1565-6ccd-4b08-a890-0a09b457d572/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:37:23,982 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bd1565-6ccd-4b08-a890-0a09b457d572/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:37:23,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bd1565-6ccd-4b08-a890-0a09b457d572/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 07:37:24,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:24,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-20 07:37:24,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:37:24,065 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 07:37:24,187 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 07:37:24,188 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 07:37:24,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-20 07:37:24,388 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-20 07:37:24,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-11-20 07:37:24,601 INFO L354 Elim1Store]: treesize reduction 82, result has 21.9 percent of original size [2021-11-20 07:37:24,601 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 48 treesize of output 36 [2021-11-20 07:37:24,751 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-11-20 07:37:24,751 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 35 treesize of output 15 [2021-11-20 07:37:24,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:37:24,807 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-20 07:37:24,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-11-20 07:37:24,874 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-20 07:37:24,874 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 35 treesize of output 30 [2021-11-20 07:37:25,028 INFO L354 Elim1Store]: treesize reduction 56, result has 21.1 percent of original size [2021-11-20 07:37:25,029 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 45 treesize of output 38 [2021-11-20 07:37:25,211 INFO L354 Elim1Store]: treesize reduction 134, result has 18.3 percent of original size [2021-11-20 07:37:25,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 110 treesize of output 71 [2021-11-20 07:37:25,443 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-11-20 07:37:25,444 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 59 treesize of output 33 [2021-11-20 07:37:25,451 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:37:25,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:37:44,105 INFO L354 Elim1Store]: treesize reduction 5, result has 96.3 percent of original size [2021-11-20 07:37:44,105 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 144 treesize of output 143 [2021-11-20 07:38:08,664 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 63315 treesize of output 63251 [2021-11-20 07:38:12,477 INFO L354 Elim1Store]: treesize reduction 14, result has 44.0 percent of original size [2021-11-20 07:38:12,478 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 51611 treesize of output 51613 [2021-11-20 07:38:13,195 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-20 07:38:13,195 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:38:13,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-11-20 07:38:13,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552057671] [2021-11-20 07:38:13,196 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-20 07:38:13,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-20 07:38:13,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:38:13,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-20 07:38:13,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=2310, Unknown=20, NotChecked=0, Total=2550 [2021-11-20 07:38:13,198 INFO L87 Difference]: Start difference. First operand 211 states and 234 transitions. Second operand has 21 states, 20 states have (on average 2.0) internal successors, (40), 21 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:38:14,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:38:14,825 INFO L93 Difference]: Finished difference Result 296 states and 323 transitions. [2021-11-20 07:38:14,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-20 07:38:14,838 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.0) internal successors, (40), 21 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-20 07:38:14,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:38:14,841 INFO L225 Difference]: With dead ends: 296 [2021-11-20 07:38:14,841 INFO L226 Difference]: Without dead ends: 296 [2021-11-20 07:38:14,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1364 ImplicationChecksByTransitivity, 43.5s TimeCoverageRelationStatistics Valid=459, Invalid=4351, Unknown=20, NotChecked=0, Total=4830 [2021-11-20 07:38:14,844 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 440 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 1221 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 1312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 07:38:14,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [440 Valid, 761 Invalid, 1312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1221 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 07:38:14,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-11-20 07:38:14,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 215. [2021-11-20 07:38:14,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 194 states have (on average 1.231958762886598) internal successors, (239), 214 states have internal predecessors, (239), 0 states have call successors, (0), 0 states 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 07:38:14,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 239 transitions. [2021-11-20 07:38:14,853 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 239 transitions. Word has length 40 [2021-11-20 07:38:14,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:38:14,853 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 239 transitions. [2021-11-20 07:38:14,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.0) internal successors, (40), 21 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:38:14,854 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 239 transitions. [2021-11-20 07:38:14,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-20 07:38:14,854 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:38:14,854 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:38:14,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bd1565-6ccd-4b08-a890-0a09b457d572/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 07:38:15,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bd1565-6ccd-4b08-a890-0a09b457d572/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-20 07:38:15,077 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 60 more)] === [2021-11-20 07:38:15,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:38:15,078 INFO L85 PathProgramCache]: Analyzing trace with hash 402357861, now seen corresponding path program 1 times [2021-11-20 07:38:15,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:38:15,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986345703] [2021-11-20 07:38:15,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:15,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:38:15,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:16,140 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:38:16,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:38:16,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986345703] [2021-11-20 07:38:16,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986345703] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:38:16,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379498729] [2021-11-20 07:38:16,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:16,140 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:38:16,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bd1565-6ccd-4b08-a890-0a09b457d572/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:38:16,142 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bd1565-6ccd-4b08-a890-0a09b457d572/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:38:16,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bd1565-6ccd-4b08-a890-0a09b457d572/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 07:38:16,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:16,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 57 conjunts are in the unsatisfiable core [2021-11-20 07:38:16,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:38:16,207 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 07:38:16,281 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 07:38:16,281 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 07:38:16,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-20 07:38:16,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 07:38:16,501 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-20 07:38:16,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 44 [2021-11-20 07:38:16,517 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-11-20 07:38:16,518 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 50 treesize of output 45 [2021-11-20 07:38:16,796 INFO L354 Elim1Store]: treesize reduction 82, result has 21.9 percent of original size [2021-11-20 07:38:16,797 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 87 treesize of output 71 [2021-11-20 07:38:16,836 INFO L354 Elim1Store]: treesize reduction 74, result has 23.7 percent of original size [2021-11-20 07:38:16,837 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 62 treesize of output 55 [2021-11-20 07:38:17,041 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 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-20 07:38:17,050 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 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-20 07:38:17,090 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-20 07:38:17,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-11-20 07:38:17,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 14 treesize of output 16 [2021-11-20 07:38:17,191 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 0 case distinctions, treesize of input 32 treesize of output 31 [2021-11-20 07:38:17,205 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 19 treesize of output 18 [2021-11-20 07:38:17,416 INFO L354 Elim1Store]: treesize reduction 56, result has 21.1 percent of original size [2021-11-20 07:38:17,417 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 82 treesize of output 63 [2021-11-20 07:38:17,436 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-11-20 07:38:17,436 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 74 treesize of output 69 [2021-11-20 07:38:17,739 INFO L354 Elim1Store]: treesize reduction 134, result has 18.3 percent of original size [2021-11-20 07:38:17,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 195 treesize of output 116 [2021-11-20 07:38:17,765 INFO L354 Elim1Store]: treesize reduction 122, result has 20.3 percent of original size [2021-11-20 07:38:17,765 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 158 treesize of output 127 [2021-11-20 07:38:18,187 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-20 07:38:18,187 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 91 treesize of output 86 [2021-11-20 07:38:18,199 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-11-20 07:38:18,199 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 80 treesize of output 46 [2021-11-20 07:38:18,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:38:18,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:38:43,570 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:38:43,571 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 1045 treesize of output 1049 [2021-11-20 07:40:50,961 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 17377576 treesize of output 17369256 [2021-11-20 07:43:39,557 WARN L227 SmtUtils]: Spent 2.81m on a formula simplification. DAG size of input: 2754 DAG size of output: 2748 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-20 07:43:39,886 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 15884226 treesize of output 15870914