./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa --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 b05b18c0458ef705f828769f88cc2a590589ce4d5c3f0e48f99be90a949f7ed4 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 20:12:34,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 20:12:34,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 20:12:34,218 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 20:12:34,219 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 20:12:34,220 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 20:12:34,221 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 20:12:34,223 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 20:12:34,224 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 20:12:34,225 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 20:12:34,226 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 20:12:34,227 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 20:12:34,227 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 20:12:34,228 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 20:12:34,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 20:12:34,231 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 20:12:34,232 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 20:12:34,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 20:12:34,234 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 20:12:34,236 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 20:12:34,237 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 20:12:34,239 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 20:12:34,240 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 20:12:34,240 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 20:12:34,243 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 20:12:34,244 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 20:12:34,244 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 20:12:34,245 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 20:12:34,245 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 20:12:34,246 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 20:12:34,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 20:12:34,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 20:12:34,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 20:12:34,248 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 20:12:34,249 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 20:12:34,249 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 20:12:34,250 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 20:12:34,250 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 20:12:34,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 20:12:34,250 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 20:12:34,251 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 20:12:34,252 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-06 20:12:34,276 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 20:12:34,276 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 20:12:34,276 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 20:12:34,276 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 20:12:34,277 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 20:12:34,277 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 20:12:34,278 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 20:12:34,278 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 20:12:34,278 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 20:12:34,278 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 20:12:34,279 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 20:12:34,279 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 20:12:34,279 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 20:12:34,279 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 20:12:34,279 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 20:12:34,280 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 20:12:34,280 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 20:12:34,280 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 20:12:34,280 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 20:12:34,280 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 20:12:34,280 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 20:12:34,281 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 20:12:34,281 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 20:12:34,281 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 20:12:34,281 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 20:12:34,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:12:34,281 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 20:12:34,282 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 20:12:34,282 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 20:12:34,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 20:12:34,282 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 20:12:34,282 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_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b05b18c0458ef705f828769f88cc2a590589ce4d5c3f0e48f99be90a949f7ed4 [2021-12-06 20:12:34,457 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 20:12:34,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 20:12:34,476 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 20:12:34,477 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 20:12:34,478 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 20:12:34,479 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i [2021-12-06 20:12:34,520 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/data/37882a4cf/d5547f1ec11e487491508ce869db8f60/FLAG3ec7dfb3a [2021-12-06 20:12:34,985 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 20:12:34,986 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i [2021-12-06 20:12:34,998 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/data/37882a4cf/d5547f1ec11e487491508ce869db8f60/FLAG3ec7dfb3a [2021-12-06 20:12:35,312 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/data/37882a4cf/d5547f1ec11e487491508ce869db8f60 [2021-12-06 20:12:35,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 20:12:35,314 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 20:12:35,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 20:12:35,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 20:12:35,319 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 20:12:35,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:12:35" (1/1) ... [2021-12-06 20:12:35,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ea64596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:12:35, skipping insertion in model container [2021-12-06 20:12:35,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:12:35" (1/1) ... [2021-12-06 20:12:35,325 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 20:12:35,353 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 20:12:35,518 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_5a800bd6-c448-4a77-87ec-1f1c67281149/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22534,22547] [2021-12-06 20:12:35,520 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22606,22619] [2021-12-06 20:12:35,522 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_5a800bd6-c448-4a77-87ec-1f1c67281149/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22746,22759] [2021-12-06 20:12:35,522 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_5a800bd6-c448-4a77-87ec-1f1c67281149/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22820,22833] [2021-12-06 20:12:35,526 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:12:35,532 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 20:12:35,557 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_5a800bd6-c448-4a77-87ec-1f1c67281149/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22534,22547] [2021-12-06 20:12:35,558 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_5a800bd6-c448-4a77-87ec-1f1c67281149/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22606,22619] [2021-12-06 20:12:35,559 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_5a800bd6-c448-4a77-87ec-1f1c67281149/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22746,22759] [2021-12-06 20:12:35,560 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_5a800bd6-c448-4a77-87ec-1f1c67281149/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22820,22833] [2021-12-06 20:12:35,562 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:12:35,581 INFO L208 MainTranslator]: Completed translation [2021-12-06 20:12:35,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:12:35 WrapperNode [2021-12-06 20:12:35,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 20:12:35,583 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 20:12:35,583 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 20:12:35,583 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 20:12:35,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:12:35" (1/1) ... [2021-12-06 20:12:35,597 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:12:35" (1/1) ... [2021-12-06 20:12:35,614 INFO L137 Inliner]: procedures = 119, calls = 36, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 134 [2021-12-06 20:12:35,615 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 20:12:35,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 20:12:35,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 20:12:35,615 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 20:12:35,621 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:12:35" (1/1) ... [2021-12-06 20:12:35,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:12:35" (1/1) ... [2021-12-06 20:12:35,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:12:35" (1/1) ... [2021-12-06 20:12:35,625 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:12:35" (1/1) ... [2021-12-06 20:12:35,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:12:35" (1/1) ... [2021-12-06 20:12:35,634 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:12:35" (1/1) ... [2021-12-06 20:12:35,636 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:12:35" (1/1) ... [2021-12-06 20:12:35,638 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 20:12:35,639 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 20:12:35,639 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 20:12:35,639 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 20:12:35,640 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:12:35" (1/1) ... [2021-12-06 20:12:35,647 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:12:35,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:12:35,665 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 20:12:35,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 20:12:35,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 20:12:35,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 20:12:35,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 20:12:35,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 20:12:35,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 20:12:35,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 20:12:35,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 20:12:35,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 20:12:35,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 20:12:35,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 20:12:35,769 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 20:12:35,770 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 20:12:36,069 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 20:12:36,076 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 20:12:36,076 INFO L301 CfgBuilder]: Removed 11 assume(true) statements. [2021-12-06 20:12:36,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:12:36 BoogieIcfgContainer [2021-12-06 20:12:36,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 20:12:36,080 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 20:12:36,080 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 20:12:36,083 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 20:12:36,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 08:12:35" (1/3) ... [2021-12-06 20:12:36,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cfa4dda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:12:36, skipping insertion in model container [2021-12-06 20:12:36,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:12:35" (2/3) ... [2021-12-06 20:12:36,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cfa4dda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:12:36, skipping insertion in model container [2021-12-06 20:12:36,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:12:36" (3/3) ... [2021-12-06 20:12:36,086 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-1.i [2021-12-06 20:12:36,090 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 20:12:36,090 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 61 error locations. [2021-12-06 20:12:36,130 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 20:12:36,136 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 [2021-12-06 20:12:36,137 INFO L340 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2021-12-06 20:12:36,154 INFO L276 IsEmpty]: Start isEmpty. Operand has 133 states, 71 states have (on average 2.1549295774647885) internal successors, (153), 132 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:36,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-06 20:12:36,159 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:12:36,160 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-06 20:12:36,160 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:12:36,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:12:36,164 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-12-06 20:12:36,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:12:36,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432066990] [2021-12-06 20:12:36,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:12:36,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:12:36,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:12:36,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:12:36,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:12:36,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432066990] [2021-12-06 20:12:36,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432066990] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:12:36,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:12:36,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 20:12:36,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088168737] [2021-12-06 20:12:36,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:12:36,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:12:36,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:12:36,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:12:36,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:12:36,323 INFO L87 Difference]: Start difference. First operand has 133 states, 71 states have (on average 2.1549295774647885) internal successors, (153), 132 states have internal predecessors, (153), 0 states have call successors, (0), 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) [2021-12-06 20:12:36,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:12:36,450 INFO L93 Difference]: Finished difference Result 161 states and 168 transitions. [2021-12-06 20:12:36,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:12:36,452 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 [2021-12-06 20:12:36,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:12:36,459 INFO L225 Difference]: With dead ends: 161 [2021-12-06 20:12:36,459 INFO L226 Difference]: Without dead ends: 159 [2021-12-06 20:12:36,460 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 [2021-12-06 20:12:36,463 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 114 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:12:36,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 100 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:12:36,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-12-06 20:12:36,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 133. [2021-12-06 20:12:36,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 74 states have (on average 1.9054054054054055) internal successors, (141), 132 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) [2021-12-06 20:12:36,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 141 transitions. [2021-12-06 20:12:36,495 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 141 transitions. Word has length 3 [2021-12-06 20:12:36,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:12:36,495 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 141 transitions. [2021-12-06 20:12:36,495 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) [2021-12-06 20:12:36,496 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 141 transitions. [2021-12-06 20:12:36,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-06 20:12:36,496 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:12:36,496 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-06 20:12:36,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 20:12:36,496 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:12:36,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:12:36,497 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-12-06 20:12:36,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:12:36,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262799638] [2021-12-06 20:12:36,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:12:36,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:12:36,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:12:36,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:12:36,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:12:36,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262799638] [2021-12-06 20:12:36,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262799638] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:12:36,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:12:36,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 20:12:36,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027458252] [2021-12-06 20:12:36,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:12:36,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:12:36,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:12:36,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:12:36,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:12:36,536 INFO L87 Difference]: Start difference. First operand 133 states and 141 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) [2021-12-06 20:12:36,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:12:36,606 INFO L93 Difference]: Finished difference Result 130 states and 137 transitions. [2021-12-06 20:12:36,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:12:36,607 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 [2021-12-06 20:12:36,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:12:36,608 INFO L225 Difference]: With dead ends: 130 [2021-12-06 20:12:36,608 INFO L226 Difference]: Without dead ends: 130 [2021-12-06 20:12:36,608 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 [2021-12-06 20:12:36,609 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 126 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:12:36,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 73 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:12:36,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-12-06 20:12:36,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-12-06 20:12:36,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 74 states have (on average 1.8513513513513513) internal successors, (137), 129 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:36,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 137 transitions. [2021-12-06 20:12:36,618 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 137 transitions. Word has length 3 [2021-12-06 20:12:36,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:12:36,618 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 137 transitions. [2021-12-06 20:12:36,619 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) [2021-12-06 20:12:36,619 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 137 transitions. [2021-12-06 20:12:36,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 20:12:36,619 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:12:36,619 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 20:12:36,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 20:12:36,619 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:12:36,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:12:36,620 INFO L85 PathProgramCache]: Analyzing trace with hash 889446152, now seen corresponding path program 1 times [2021-12-06 20:12:36,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:12:36,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430386362] [2021-12-06 20:12:36,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:12:36,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:12:36,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:12:36,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:12:36,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:12:36,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430386362] [2021-12-06 20:12:36,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430386362] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:12:36,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:12:36,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 20:12:36,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291254627] [2021-12-06 20:12:36,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:12:36,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:12:36,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:12:36,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:12:36,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:12:36,660 INFO L87 Difference]: Start difference. First operand 130 states and 137 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:36,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:12:36,721 INFO L93 Difference]: Finished difference Result 127 states and 133 transitions. [2021-12-06 20:12:36,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:12:36,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-06 20:12:36,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:12:36,722 INFO L225 Difference]: With dead ends: 127 [2021-12-06 20:12:36,722 INFO L226 Difference]: Without dead ends: 127 [2021-12-06 20:12:36,723 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 [2021-12-06 20:12:36,724 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 102 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:12:36,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 82 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:12:36,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-12-06 20:12:36,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2021-12-06 20:12:36,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 75 states have (on average 1.7733333333333334) internal successors, (133), 124 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) [2021-12-06 20:12:36,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 133 transitions. [2021-12-06 20:12:36,731 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 133 transitions. Word has length 6 [2021-12-06 20:12:36,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:12:36,731 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 133 transitions. [2021-12-06 20:12:36,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:36,732 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 133 transitions. [2021-12-06 20:12:36,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 20:12:36,732 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:12:36,732 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 20:12:36,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 20:12:36,733 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:12:36,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:12:36,733 INFO L85 PathProgramCache]: Analyzing trace with hash 889446153, now seen corresponding path program 1 times [2021-12-06 20:12:36,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:12:36,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600165092] [2021-12-06 20:12:36,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:12:36,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:12:36,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:12:36,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:12:36,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:12:36,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600165092] [2021-12-06 20:12:36,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600165092] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:12:36,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:12:36,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 20:12:36,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432830117] [2021-12-06 20:12:36,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:12:36,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:12:36,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:12:36,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:12:36,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:12:36,772 INFO L87 Difference]: Start difference. First operand 125 states and 133 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:36,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:12:36,838 INFO L93 Difference]: Finished difference Result 143 states and 149 transitions. [2021-12-06 20:12:36,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:12:36,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-06 20:12:36,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:12:36,840 INFO L225 Difference]: With dead ends: 143 [2021-12-06 20:12:36,840 INFO L226 Difference]: Without dead ends: 143 [2021-12-06 20:12:36,840 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 [2021-12-06 20:12:36,841 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 101 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:12:36,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 91 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:12:36,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-12-06 20:12:36,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 130. [2021-12-06 20:12:36,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 82 states have (on average 1.6829268292682926) internal successors, (138), 129 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:36,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 138 transitions. [2021-12-06 20:12:36,848 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 138 transitions. Word has length 6 [2021-12-06 20:12:36,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:12:36,848 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 138 transitions. [2021-12-06 20:12:36,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:36,848 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 138 transitions. [2021-12-06 20:12:36,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-06 20:12:36,849 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:12:36,849 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:12:36,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 20:12:36,849 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:12:36,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:12:36,849 INFO L85 PathProgramCache]: Analyzing trace with hash 171980525, now seen corresponding path program 1 times [2021-12-06 20:12:36,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:12:36,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134677618] [2021-12-06 20:12:36,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:12:36,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:12:36,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:12:36,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:12:36,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:12:36,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134677618] [2021-12-06 20:12:36,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134677618] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:12:36,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:12:36,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:12:36,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658073737] [2021-12-06 20:12:36,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:12:36,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:12:36,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:12:36,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:12:36,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:12:36,912 INFO L87 Difference]: Start difference. First operand 130 states and 138 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:36,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:12:36,996 INFO L93 Difference]: Finished difference Result 134 states and 144 transitions. [2021-12-06 20:12:36,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:12:36,997 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-06 20:12:36,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:12:36,997 INFO L225 Difference]: With dead ends: 134 [2021-12-06 20:12:36,997 INFO L226 Difference]: Without dead ends: 134 [2021-12-06 20:12:36,998 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 [2021-12-06 20:12:36,999 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 161 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:12:36,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 74 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:12:37,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-12-06 20:12:37,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 121. [2021-12-06 20:12:37,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 84 states have (on average 1.5595238095238095) 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) [2021-12-06 20:12:37,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 131 transitions. [2021-12-06 20:12:37,006 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 131 transitions. Word has length 11 [2021-12-06 20:12:37,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:12:37,007 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 131 transitions. [2021-12-06 20:12:37,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:37,007 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 131 transitions. [2021-12-06 20:12:37,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-06 20:12:37,008 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:12:37,008 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:12:37,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 20:12:37,008 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:12:37,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:12:37,009 INFO L85 PathProgramCache]: Analyzing trace with hash 171980526, now seen corresponding path program 1 times [2021-12-06 20:12:37,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:12:37,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475178844] [2021-12-06 20:12:37,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:12:37,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:12:37,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:12:37,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:12:37,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:12:37,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475178844] [2021-12-06 20:12:37,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475178844] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:12:37,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:12:37,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:12:37,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655123311] [2021-12-06 20:12:37,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:12:37,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:12:37,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:12:37,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:12:37,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:12:37,078 INFO L87 Difference]: Start difference. First operand 121 states and 131 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:37,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:12:37,182 INFO L93 Difference]: Finished difference Result 158 states and 168 transitions. [2021-12-06 20:12:37,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 20:12:37,182 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-06 20:12:37,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:12:37,183 INFO L225 Difference]: With dead ends: 158 [2021-12-06 20:12:37,183 INFO L226 Difference]: Without dead ends: 158 [2021-12-06 20:12:37,183 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 [2021-12-06 20:12:37,184 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 149 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:12:37,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 102 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:12:37,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-12-06 20:12:37,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 128. [2021-12-06 20:12:37,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 92 states have (on average 1.5108695652173914) internal successors, (139), 127 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:37,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 139 transitions. [2021-12-06 20:12:37,189 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 139 transitions. Word has length 11 [2021-12-06 20:12:37,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:12:37,189 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 139 transitions. [2021-12-06 20:12:37,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:37,189 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 139 transitions. [2021-12-06 20:12:37,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-06 20:12:37,190 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:12:37,190 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:12:37,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 20:12:37,190 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:12:37,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:12:37,190 INFO L85 PathProgramCache]: Analyzing trace with hash 2064509497, now seen corresponding path program 1 times [2021-12-06 20:12:37,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:12:37,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388148052] [2021-12-06 20:12:37,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:12:37,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:12:37,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:12:37,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:12:37,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:12:37,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388148052] [2021-12-06 20:12:37,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388148052] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:12:37,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:12:37,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 20:12:37,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200428969] [2021-12-06 20:12:37,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:12:37,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 20:12:37,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:12:37,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 20:12:37,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:12:37,239 INFO L87 Difference]: Start difference. First operand 128 states and 139 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:37,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:12:37,352 INFO L93 Difference]: Finished difference Result 167 states and 177 transitions. [2021-12-06 20:12:37,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:12:37,352 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-06 20:12:37,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:12:37,354 INFO L225 Difference]: With dead ends: 167 [2021-12-06 20:12:37,355 INFO L226 Difference]: Without dead ends: 167 [2021-12-06 20:12:37,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:12:37,356 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 230 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:12:37,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 129 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:12:37,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-12-06 20:12:37,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 129. [2021-12-06 20:12:37,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 94 states have (on average 1.4893617021276595) internal successors, (140), 128 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:37,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 140 transitions. [2021-12-06 20:12:37,363 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 140 transitions. Word has length 13 [2021-12-06 20:12:37,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:12:37,364 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 140 transitions. [2021-12-06 20:12:37,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:37,364 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 140 transitions. [2021-12-06 20:12:37,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-06 20:12:37,365 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:12:37,365 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:12:37,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 20:12:37,365 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:12:37,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:12:37,366 INFO L85 PathProgramCache]: Analyzing trace with hash -264176465, now seen corresponding path program 1 times [2021-12-06 20:12:37,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:12:37,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092781822] [2021-12-06 20:12:37,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:12:37,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:12:37,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:12:37,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:12:37,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:12:37,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092781822] [2021-12-06 20:12:37,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092781822] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:12:37,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:12:37,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 20:12:37,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278312174] [2021-12-06 20:12:37,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:12:37,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:12:37,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:12:37,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:12:37,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:12:37,419 INFO L87 Difference]: Start difference. First operand 129 states and 140 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:37,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:12:37,541 INFO L93 Difference]: Finished difference Result 129 states and 140 transitions. [2021-12-06 20:12:37,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 20:12:37,542 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-12-06 20:12:37,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:12:37,542 INFO L225 Difference]: With dead ends: 129 [2021-12-06 20:12:37,542 INFO L226 Difference]: Without dead ends: 129 [2021-12-06 20:12:37,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-06 20:12:37,543 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 47 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:12:37,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 264 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:12:37,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-12-06 20:12:37,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 128. [2021-12-06 20:12:37,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 94 states have (on average 1.4787234042553192) internal successors, (139), 127 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:37,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 139 transitions. [2021-12-06 20:12:37,547 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 139 transitions. Word has length 15 [2021-12-06 20:12:37,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:12:37,547 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 139 transitions. [2021-12-06 20:12:37,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:37,548 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 139 transitions. [2021-12-06 20:12:37,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-06 20:12:37,548 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:12:37,548 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:12:37,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 20:12:37,548 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:12:37,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:12:37,549 INFO L85 PathProgramCache]: Analyzing trace with hash -264176464, now seen corresponding path program 1 times [2021-12-06 20:12:37,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:12:37,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489005268] [2021-12-06 20:12:37,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:12:37,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:12:37,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:12:37,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:12:37,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:12:37,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489005268] [2021-12-06 20:12:37,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489005268] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:12:37,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:12:37,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 20:12:37,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662997179] [2021-12-06 20:12:37,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:12:37,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:12:37,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:12:37,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:12:37,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:12:37,601 INFO L87 Difference]: Start difference. First operand 128 states and 139 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:37,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:12:37,731 INFO L93 Difference]: Finished difference Result 130 states and 142 transitions. [2021-12-06 20:12:37,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 20:12:37,732 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-12-06 20:12:37,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:12:37,732 INFO L225 Difference]: With dead ends: 130 [2021-12-06 20:12:37,732 INFO L226 Difference]: Without dead ends: 130 [2021-12-06 20:12:37,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-12-06 20:12:37,733 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 18 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:12:37,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 307 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:12:37,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-12-06 20:12:37,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 123. [2021-12-06 20:12:37,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 94 states have (on average 1.425531914893617) internal successors, (134), 122 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:37,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 134 transitions. [2021-12-06 20:12:37,736 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 134 transitions. Word has length 15 [2021-12-06 20:12:37,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:12:37,737 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 134 transitions. [2021-12-06 20:12:37,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:37,737 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 134 transitions. [2021-12-06 20:12:37,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 20:12:37,737 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:12:37,737 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:12:37,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 20:12:37,738 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:12:37,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:12:37,738 INFO L85 PathProgramCache]: Analyzing trace with hash -125261441, now seen corresponding path program 1 times [2021-12-06 20:12:37,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:12:37,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722719405] [2021-12-06 20:12:37,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:12:37,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:12:37,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:12:37,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:12:37,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:12:37,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722719405] [2021-12-06 20:12:37,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722719405] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:12:37,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:12:37,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 20:12:37,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924270444] [2021-12-06 20:12:37,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:12:37,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 20:12:37,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:12:37,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 20:12:37,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:12:37,816 INFO L87 Difference]: Start difference. First operand 123 states and 134 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 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) [2021-12-06 20:12:37,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:12:37,968 INFO L93 Difference]: Finished difference Result 184 states and 200 transitions. [2021-12-06 20:12:37,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 20:12:37,968 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 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 [2021-12-06 20:12:37,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:12:37,969 INFO L225 Difference]: With dead ends: 184 [2021-12-06 20:12:37,969 INFO L226 Difference]: Without dead ends: 184 [2021-12-06 20:12:37,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-12-06 20:12:37,970 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 256 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:12:37,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 229 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:12:37,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-12-06 20:12:37,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 130. [2021-12-06 20:12:37,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 101 states have (on average 1.4059405940594059) internal successors, (142), 129 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:37,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 142 transitions. [2021-12-06 20:12:37,973 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 142 transitions. Word has length 16 [2021-12-06 20:12:37,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:12:37,974 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 142 transitions. [2021-12-06 20:12:37,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 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) [2021-12-06 20:12:37,974 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 142 transitions. [2021-12-06 20:12:37,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-06 20:12:37,974 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:12:37,975 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] [2021-12-06 20:12:37,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 20:12:37,975 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:12:37,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:12:37,975 INFO L85 PathProgramCache]: Analyzing trace with hash -926362969, now seen corresponding path program 1 times [2021-12-06 20:12:37,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:12:37,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977140050] [2021-12-06 20:12:37,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:12:37,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:12:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:12:38,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:12:38,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:12:38,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977140050] [2021-12-06 20:12:38,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977140050] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:12:38,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392836022] [2021-12-06 20:12:38,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:12:38,032 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:12:38,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:12:38,033 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:12:38,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 20:12:38,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:12:38,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 29 conjunts are in the unsatisfiable core [2021-12-06 20:12:38,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:12:38,175 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 [2021-12-06 20:12:38,180 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 [2021-12-06 20:12:38,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:12:38,224 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 21 treesize of output 20 [2021-12-06 20:12:38,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:12:38,230 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 21 treesize of output 20 [2021-12-06 20:12:38,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 20:12:38,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 20:12:38,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:12:38,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:12:38,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:12:38,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392836022] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:12:38,482 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:12:38,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 6] total 12 [2021-12-06 20:12:38,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481362465] [2021-12-06 20:12:38,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:12:38,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 20:12:38,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:12:38,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 20:12:38,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-12-06 20:12:38,483 INFO L87 Difference]: Start difference. First operand 130 states and 142 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:38,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:12:38,720 INFO L93 Difference]: Finished difference Result 181 states and 197 transitions. [2021-12-06 20:12:38,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 20:12:38,721 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 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 23 [2021-12-06 20:12:38,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:12:38,722 INFO L225 Difference]: With dead ends: 181 [2021-12-06 20:12:38,722 INFO L226 Difference]: Without dead ends: 181 [2021-12-06 20:12:38,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2021-12-06 20:12:38,723 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 313 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:12:38,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 260 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 20:12:38,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-12-06 20:12:38,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 137. [2021-12-06 20:12:38,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 108 states have (on average 1.3888888888888888) internal successors, (150), 136 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:38,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 150 transitions. [2021-12-06 20:12:38,728 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 150 transitions. Word has length 23 [2021-12-06 20:12:38,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:12:38,729 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 150 transitions. [2021-12-06 20:12:38,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:38,729 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 150 transitions. [2021-12-06 20:12:38,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-06 20:12:38,730 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:12:38,730 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] [2021-12-06 20:12:38,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 20:12:38,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-06 20:12:38,932 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:12:38,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:12:38,934 INFO L85 PathProgramCache]: Analyzing trace with hash -968381222, now seen corresponding path program 1 times [2021-12-06 20:12:38,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:12:38,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942996911] [2021-12-06 20:12:38,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:12:38,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:12:38,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:12:39,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:12:39,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:12:39,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942996911] [2021-12-06 20:12:39,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942996911] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:12:39,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:12:39,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 20:12:39,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955894347] [2021-12-06 20:12:39,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:12:39,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 20:12:39,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:12:39,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 20:12:39,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:12:39,103 INFO L87 Difference]: Start difference. First operand 137 states and 150 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:39,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:12:39,173 INFO L93 Difference]: Finished difference Result 141 states and 152 transitions. [2021-12-06 20:12:39,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:12:39,174 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-12-06 20:12:39,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:12:39,175 INFO L225 Difference]: With dead ends: 141 [2021-12-06 20:12:39,175 INFO L226 Difference]: Without dead ends: 141 [2021-12-06 20:12:39,175 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 [2021-12-06 20:12:39,175 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 9 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:12:39,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 296 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:12:39,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-12-06 20:12:39,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 136. [2021-12-06 20:12:39,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 107 states have (on average 1.3738317757009346) internal successors, (147), 135 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) [2021-12-06 20:12:39,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 147 transitions. [2021-12-06 20:12:39,179 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 147 transitions. Word has length 23 [2021-12-06 20:12:39,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:12:39,179 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 147 transitions. [2021-12-06 20:12:39,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:39,179 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 147 transitions. [2021-12-06 20:12:39,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-06 20:12:39,180 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:12:39,180 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] [2021-12-06 20:12:39,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 20:12:39,180 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:12:39,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:12:39,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1747136957, now seen corresponding path program 1 times [2021-12-06 20:12:39,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:12:39,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434139106] [2021-12-06 20:12:39,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:12:39,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:12:39,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:12:39,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:12:39,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:12:39,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434139106] [2021-12-06 20:12:39,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434139106] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:12:39,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:12:39,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 20:12:39,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482374751] [2021-12-06 20:12:39,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:12:39,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:12:39,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:12:39,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:12:39,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:12:39,222 INFO L87 Difference]: Start difference. First operand 136 states and 147 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:39,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:12:39,338 INFO L93 Difference]: Finished difference Result 136 states and 147 transitions. [2021-12-06 20:12:39,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:12:39,338 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2021-12-06 20:12:39,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:12:39,339 INFO L225 Difference]: With dead ends: 136 [2021-12-06 20:12:39,339 INFO L226 Difference]: Without dead ends: 136 [2021-12-06 20:12:39,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-06 20:12:39,340 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 41 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:12:39,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 261 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:12:39,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-12-06 20:12:39,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 135. [2021-12-06 20:12:39,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 107 states have (on average 1.3644859813084111) internal successors, (146), 134 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:39,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 146 transitions. [2021-12-06 20:12:39,345 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 146 transitions. Word has length 24 [2021-12-06 20:12:39,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:12:39,345 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 146 transitions. [2021-12-06 20:12:39,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:39,345 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 146 transitions. [2021-12-06 20:12:39,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-06 20:12:39,346 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:12:39,346 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] [2021-12-06 20:12:39,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 20:12:39,346 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:12:39,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:12:39,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1747136958, now seen corresponding path program 1 times [2021-12-06 20:12:39,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:12:39,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337034577] [2021-12-06 20:12:39,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:12:39,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:12:39,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:12:39,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:12:39,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:12:39,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337034577] [2021-12-06 20:12:39,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337034577] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:12:39,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:12:39,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 20:12:39,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262757157] [2021-12-06 20:12:39,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:12:39,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:12:39,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:12:39,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:12:39,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:12:39,408 INFO L87 Difference]: Start difference. First operand 135 states and 146 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:39,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:12:39,515 INFO L93 Difference]: Finished difference Result 133 states and 144 transitions. [2021-12-06 20:12:39,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:12:39,515 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2021-12-06 20:12:39,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:12:39,516 INFO L225 Difference]: With dead ends: 133 [2021-12-06 20:12:39,516 INFO L226 Difference]: Without dead ends: 133 [2021-12-06 20:12:39,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:12:39,517 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 9 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:12:39,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 315 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:12:39,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-12-06 20:12:39,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 126. [2021-12-06 20:12:39,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 102 states have (on average 1.3333333333333333) internal successors, (136), 125 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:39,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 136 transitions. [2021-12-06 20:12:39,520 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 136 transitions. Word has length 24 [2021-12-06 20:12:39,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:12:39,520 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 136 transitions. [2021-12-06 20:12:39,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:39,520 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 136 transitions. [2021-12-06 20:12:39,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-06 20:12:39,521 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:12:39,521 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] [2021-12-06 20:12:39,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 20:12:39,521 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:12:39,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:12:39,521 INFO L85 PathProgramCache]: Analyzing trace with hash 59031534, now seen corresponding path program 1 times [2021-12-06 20:12:39,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:12:39,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566372450] [2021-12-06 20:12:39,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:12:39,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:12:39,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:12:39,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:12:39,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:12:39,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566372450] [2021-12-06 20:12:39,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566372450] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:12:39,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308605310] [2021-12-06 20:12:39,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:12:39,789 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:12:39,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:12:39,790 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:12:39,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 20:12:39,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:12:39,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 31 conjunts are in the unsatisfiable core [2021-12-06 20:12:39,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:12:39,866 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 [2021-12-06 20:12:39,880 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 [2021-12-06 20:12:39,923 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 20:12:39,923 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 [2021-12-06 20:12:39,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:12:39,950 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 21 treesize of output 20 [2021-12-06 20:12:39,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 20:12:39,978 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 16 treesize of output 8 [2021-12-06 20:12:40,004 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 16 treesize of output 18 [2021-12-06 20:12:40,018 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 16 treesize of output 18 [2021-12-06 20:12:40,042 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 19 treesize of output 7 [2021-12-06 20:12:40,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:12:40,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:12:40,057 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_533 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_533) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)) ~unnamed1~0~BLACK)) is different from false [2021-12-06 20:12:40,071 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_533 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_533) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)) ~unnamed1~0~BLACK)) is different from false [2021-12-06 20:12:40,076 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_533 (Array Int Int))) (= ~unnamed1~0~BLACK (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_533) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)))) is different from false [2021-12-06 20:12:40,085 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_528 Int) (v_ArrVal_533 (Array Int Int))) (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_528)) |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_533) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)))) is different from false [2021-12-06 20:12:40,155 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_528 Int) (|v_ULTIMATE.start_main_~end~0#1.offset_56| Int) (|v_ULTIMATE.start_main_#t~malloc4#1.base_6| Int) (v_ArrVal_533 (Array Int Int))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc4#1.base_6|) 0)) (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) |v_ULTIMATE.start_main_~end~0#1.offset_56| v_ArrVal_528)) |v_ULTIMATE.start_main_#t~malloc4#1.base_6| v_ArrVal_533) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4))) (< |c_ULTIMATE.start_main_~list~0#1.offset| |v_ULTIMATE.start_main_~end~0#1.offset_56|))) is different from false [2021-12-06 20:12:40,165 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:12:40,168 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:12:40,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 31 [2021-12-06 20:12:40,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2021-12-06 20:12:40,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-06 20:12:40,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:12:40,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308605310] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:12:40,188 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:12:40,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 31 [2021-12-06 20:12:40,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479856131] [2021-12-06 20:12:40,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:12:40,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-12-06 20:12:40,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:12:40,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-12-06 20:12:40,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=541, Unknown=5, NotChecked=260, Total=930 [2021-12-06 20:12:40,191 INFO L87 Difference]: Start difference. First operand 126 states and 136 transitions. Second operand has 31 states, 31 states have (on average 2.032258064516129) internal successors, (63), 31 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:40,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:12:40,849 INFO L93 Difference]: Finished difference Result 348 states and 376 transitions. [2021-12-06 20:12:40,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-06 20:12:40,849 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.032258064516129) internal successors, (63), 31 states have internal predecessors, (63), 0 states have call successors, (0), 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 26 [2021-12-06 20:12:40,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:12:40,851 INFO L225 Difference]: With dead ends: 348 [2021-12-06 20:12:40,851 INFO L226 Difference]: Without dead ends: 348 [2021-12-06 20:12:40,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 38 SyntacticMatches, 6 SemanticMatches, 40 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=296, Invalid=1051, Unknown=5, NotChecked=370, Total=1722 [2021-12-06 20:12:40,852 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 564 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 1969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 910 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 20:12:40,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [564 Valid, 743 Invalid, 1969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 956 Invalid, 0 Unknown, 910 Unchecked, 0.4s Time] [2021-12-06 20:12:40,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2021-12-06 20:12:40,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 151. [2021-12-06 20:12:40,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 127 states have (on average 1.2992125984251968) 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) [2021-12-06 20:12:40,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 165 transitions. [2021-12-06 20:12:40,857 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 165 transitions. Word has length 26 [2021-12-06 20:12:40,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:12:40,857 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 165 transitions. [2021-12-06 20:12:40,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.032258064516129) internal successors, (63), 31 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:40,857 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 165 transitions. [2021-12-06 20:12:40,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-06 20:12:40,858 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:12:40,858 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] [2021-12-06 20:12:40,885 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 20:12:41,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-06 20:12:41,058 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:12:41,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:12:41,059 INFO L85 PathProgramCache]: Analyzing trace with hash 500584872, now seen corresponding path program 1 times [2021-12-06 20:12:41,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:12:41,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90373821] [2021-12-06 20:12:41,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:12:41,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:12:41,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:12:41,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 20:12:41,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:12:41,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90373821] [2021-12-06 20:12:41,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90373821] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:12:41,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:12:41,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 20:12:41,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105535948] [2021-12-06 20:12:41,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:12:41,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:12:41,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:12:41,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:12:41,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:12:41,084 INFO L87 Difference]: Start difference. First operand 151 states and 165 transitions. Second operand has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:41,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:12:41,110 INFO L93 Difference]: Finished difference Result 152 states and 165 transitions. [2021-12-06 20:12:41,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:12:41,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2021-12-06 20:12:41,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:12:41,111 INFO L225 Difference]: With dead ends: 152 [2021-12-06 20:12:41,111 INFO L226 Difference]: Without dead ends: 152 [2021-12-06 20:12:41,112 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 [2021-12-06 20:12:41,112 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 48 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:12:41,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 101 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:12:41,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-12-06 20:12:41,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-12-06 20:12:41,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 128 states have (on average 1.2890625) internal successors, (165), 151 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) [2021-12-06 20:12:41,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 165 transitions. [2021-12-06 20:12:41,117 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 165 transitions. Word has length 29 [2021-12-06 20:12:41,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:12:41,117 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 165 transitions. [2021-12-06 20:12:41,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:41,117 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 165 transitions. [2021-12-06 20:12:41,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-06 20:12:41,118 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:12:41,118 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] [2021-12-06 20:12:41,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 20:12:41,119 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr47REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:12:41,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:12:41,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1324652277, now seen corresponding path program 1 times [2021-12-06 20:12:41,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:12:41,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112420185] [2021-12-06 20:12:41,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:12:41,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:12:41,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:12:41,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 20:12:41,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:12:41,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112420185] [2021-12-06 20:12:41,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112420185] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:12:41,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:12:41,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:12:41,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811113710] [2021-12-06 20:12:41,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:12:41,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:12:41,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:12:41,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:12:41,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:12:41,177 INFO L87 Difference]: Start difference. First operand 152 states and 165 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:41,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:12:41,223 INFO L93 Difference]: Finished difference Result 160 states and 173 transitions. [2021-12-06 20:12:41,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 20:12:41,223 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-12-06 20:12:41,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:12:41,224 INFO L225 Difference]: With dead ends: 160 [2021-12-06 20:12:41,224 INFO L226 Difference]: Without dead ends: 160 [2021-12-06 20:12:41,225 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 [2021-12-06 20:12:41,225 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 6 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:12:41,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 229 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:12:41,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-12-06 20:12:41,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 155. [2021-12-06 20:12:41,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 131 states have (on average 1.282442748091603) internal successors, (168), 154 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:41,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 168 transitions. [2021-12-06 20:12:41,230 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 168 transitions. Word has length 31 [2021-12-06 20:12:41,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:12:41,230 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 168 transitions. [2021-12-06 20:12:41,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:41,231 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 168 transitions. [2021-12-06 20:12:41,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-06 20:12:41,231 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:12:41,231 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] [2021-12-06 20:12:41,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 20:12:41,232 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:12:41,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:12:41,232 INFO L85 PathProgramCache]: Analyzing trace with hash 797716084, now seen corresponding path program 1 times [2021-12-06 20:12:41,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:12:41,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140080805] [2021-12-06 20:12:41,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:12:41,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:12:41,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:12:41,334 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:12:41,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:12:41,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140080805] [2021-12-06 20:12:41,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140080805] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:12:41,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341696272] [2021-12-06 20:12:41,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:12:41,334 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:12:41,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:12:41,335 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:12:41,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 20:12:41,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:12:41,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 27 conjunts are in the unsatisfiable core [2021-12-06 20:12:41,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:12:41,408 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 [2021-12-06 20:12:41,411 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 [2021-12-06 20:12:41,434 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-12-06 20:12:41,434 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 21 treesize of output 20 [2021-12-06 20:12:41,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:12:41,439 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 21 treesize of output 20 [2021-12-06 20:12:41,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 20:12:41,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 20:12:41,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 20:12:41,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:12:41,680 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 20:12:41,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341696272] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:12:41,680 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:12:41,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 6] total 14 [2021-12-06 20:12:41,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997830285] [2021-12-06 20:12:41,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:12:41,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 20:12:41,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:12:41,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 20:12:41,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-12-06 20:12:41,682 INFO L87 Difference]: Start difference. First operand 155 states and 168 transitions. Second operand has 14 states, 14 states have (on average 5.642857142857143) internal successors, (79), 14 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:42,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:12:42,002 INFO L93 Difference]: Finished difference Result 209 states and 225 transitions. [2021-12-06 20:12:42,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 20:12:42,003 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.642857142857143) internal successors, (79), 14 states have internal predecessors, (79), 0 states have call successors, (0), 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 32 [2021-12-06 20:12:42,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:12:42,004 INFO L225 Difference]: With dead ends: 209 [2021-12-06 20:12:42,004 INFO L226 Difference]: Without dead ends: 209 [2021-12-06 20:12:42,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2021-12-06 20:12:42,005 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 249 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:12:42,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 405 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 20:12:42,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-12-06 20:12:42,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 166. [2021-12-06 20:12:42,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 142 states have (on average 1.2746478873239437) internal successors, (181), 165 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:42,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 181 transitions. [2021-12-06 20:12:42,009 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 181 transitions. Word has length 32 [2021-12-06 20:12:42,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:12:42,010 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 181 transitions. [2021-12-06 20:12:42,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.642857142857143) internal successors, (79), 14 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:42,010 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 181 transitions. [2021-12-06 20:12:42,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 20:12:42,010 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:12:42,010 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] [2021-12-06 20:12:42,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 20:12:42,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-06 20:12:42,212 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:12:42,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:12:42,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1040605566, now seen corresponding path program 1 times [2021-12-06 20:12:42,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:12:42,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583766812] [2021-12-06 20:12:42,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:12:42,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:12:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:12:42,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 20:12:42,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:12:42,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583766812] [2021-12-06 20:12:42,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583766812] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:12:42,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:12:42,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 20:12:42,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843003588] [2021-12-06 20:12:42,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:12:42,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:12:42,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:12:42,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:12:42,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:12:42,275 INFO L87 Difference]: Start difference. First operand 166 states and 181 transitions. Second operand has 3 states, 2 states have (on average 16.5) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:42,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:12:42,296 INFO L93 Difference]: Finished difference Result 165 states and 179 transitions. [2021-12-06 20:12:42,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:12:42,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 16.5) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-12-06 20:12:42,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:12:42,297 INFO L225 Difference]: With dead ends: 165 [2021-12-06 20:12:42,297 INFO L226 Difference]: Without dead ends: 165 [2021-12-06 20:12:42,297 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 [2021-12-06 20:12:42,298 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 65 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:12:42,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 73 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:12:42,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-12-06 20:12:42,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2021-12-06 20:12:42,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 142 states have (on average 1.2605633802816902) internal successors, (179), 164 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:42,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 179 transitions. [2021-12-06 20:12:42,303 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 179 transitions. Word has length 33 [2021-12-06 20:12:42,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:12:42,303 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 179 transitions. [2021-12-06 20:12:42,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 16.5) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:42,303 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 179 transitions. [2021-12-06 20:12:42,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 20:12:42,304 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:12:42,304 INFO L514 BasicCegarLoop]: trace histogram [2, 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] [2021-12-06 20:12:42,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 20:12:42,304 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:12:42,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:12:42,305 INFO L85 PathProgramCache]: Analyzing trace with hash 248148312, now seen corresponding path program 1 times [2021-12-06 20:12:42,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:12:42,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913458871] [2021-12-06 20:12:42,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:12:42,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:12:42,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:12:42,422 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:12:42,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:12:42,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913458871] [2021-12-06 20:12:42,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913458871] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:12:42,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429310830] [2021-12-06 20:12:42,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:12:42,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:12:42,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:12:42,424 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:12:42,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 20:12:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:12:42,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 33 conjunts are in the unsatisfiable core [2021-12-06 20:12:42,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:12:42,506 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 [2021-12-06 20:12:42,555 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-06 20:12:42,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-06 20:12:42,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 20:12:42,675 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 20:12:42,675 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 31 treesize of output 29 [2021-12-06 20:12:42,704 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 20:12:42,704 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 28 treesize of output 29 [2021-12-06 20:12:42,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-12-06 20:12:42,840 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:12:42,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:12:42,924 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_787 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_787) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)) 1)) is different from false [2021-12-06 20:12:42,930 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:12:42,931 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2021-12-06 20:12:42,935 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:12:42,935 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 37 [2021-12-06 20:12:42,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-12-06 20:12:45,240 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:12:45,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429310830] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:12:45,240 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:12:45,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 28 [2021-12-06 20:12:45,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603109311] [2021-12-06 20:12:45,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:12:45,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-06 20:12:45,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:12:45,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-06 20:12:45,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=624, Unknown=13, NotChecked=52, Total=812 [2021-12-06 20:12:45,241 INFO L87 Difference]: Start difference. First operand 165 states and 179 transitions. Second operand has 29 states, 28 states have (on average 2.7142857142857144) internal successors, (76), 29 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:45,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:12:45,578 INFO L93 Difference]: Finished difference Result 192 states and 209 transitions. [2021-12-06 20:12:45,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 20:12:45,578 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.7142857142857144) internal successors, (76), 29 states have internal predecessors, (76), 0 states have call successors, (0), 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 33 [2021-12-06 20:12:45,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:12:45,579 INFO L225 Difference]: With dead ends: 192 [2021-12-06 20:12:45,579 INFO L226 Difference]: Without dead ends: 192 [2021-12-06 20:12:45,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=207, Invalid=840, Unknown=13, NotChecked=62, Total=1122 [2021-12-06 20:12:45,580 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 89 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 594 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:12:45,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 707 Invalid, 1243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 621 Invalid, 0 Unknown, 594 Unchecked, 0.2s Time] [2021-12-06 20:12:45,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-12-06 20:12:45,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 178. [2021-12-06 20:12:45,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 155 states have (on average 1.2516129032258065) internal successors, (194), 177 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:45,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 194 transitions. [2021-12-06 20:12:45,584 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 194 transitions. Word has length 33 [2021-12-06 20:12:45,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:12:45,584 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 194 transitions. [2021-12-06 20:12:45,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.7142857142857144) internal successors, (76), 29 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:45,584 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 194 transitions. [2021-12-06 20:12:45,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 20:12:45,584 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:12:45,584 INFO L514 BasicCegarLoop]: trace histogram [2, 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] [2021-12-06 20:12:45,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 20:12:45,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:12:45,786 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:12:45,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:12:45,787 INFO L85 PathProgramCache]: Analyzing trace with hash 248148313, now seen corresponding path program 1 times [2021-12-06 20:12:45,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:12:45,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966900396] [2021-12-06 20:12:45,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:12:45,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:12:45,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:12:45,952 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:12:45,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:12:45,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966900396] [2021-12-06 20:12:45,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966900396] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:12:45,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314810234] [2021-12-06 20:12:45,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:12:45,953 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:12:45,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:12:45,953 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:12:45,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 20:12:46,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:12:46,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 46 conjunts are in the unsatisfiable core [2021-12-06 20:12:46,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:12:46,028 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 [2021-12-06 20:12:46,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 20:12:46,078 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 20:12:46,079 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 [2021-12-06 20:12:46,107 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 [2021-12-06 20:12:46,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 20:12:46,209 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 20:12:46,209 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 14 treesize of output 20 [2021-12-06 20:12:46,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 20:12:46,224 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 20:12:46,225 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 31 treesize of output 29 [2021-12-06 20:12:46,279 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 20:12:46,279 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 38 treesize of output 37 [2021-12-06 20:12:46,283 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 18 treesize of output 20 [2021-12-06 20:12:46,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 20:12:46,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-12-06 20:12:46,421 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:12:46,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:12:46,533 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_892 (Array Int Int)) (v_ArrVal_893 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_892) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_893) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)))) (forall ((v_ArrVal_892 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_892) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) 4)))) is different from false [2021-12-06 20:12:46,557 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_892 (Array Int Int)) (v_ArrVal_893 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_892) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_893) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)))) (forall ((v_ArrVal_892 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_892) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) 4)))) is different from false [2021-12-06 20:12:46,566 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_892 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_892) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) 4))) (forall ((v_ArrVal_892 (Array Int Int)) (v_ArrVal_893 (Array Int Int))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_892) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_893) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)))))) is different from false [2021-12-06 20:12:46,581 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:12:46,581 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2021-12-06 20:12:46,585 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:12:46,585 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 37 [2021-12-06 20:12:46,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-12-06 20:12:46,604 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:12:46,604 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 38 [2021-12-06 20:12:46,608 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:12:46,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2021-12-06 20:12:46,610 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:12:46,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2021-12-06 20:12:46,613 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:12:46,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-12-06 20:12:46,693 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:12:46,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314810234] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:12:46,693 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:12:46,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2021-12-06 20:12:46,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636264255] [2021-12-06 20:12:46,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:12:46,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-06 20:12:46,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:12:46,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-06 20:12:46,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=720, Unknown=3, NotChecked=168, Total=992 [2021-12-06 20:12:46,695 INFO L87 Difference]: Start difference. First operand 178 states and 194 transitions. Second operand has 32 states, 31 states have (on average 2.935483870967742) internal successors, (91), 32 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:47,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:12:47,651 INFO L93 Difference]: Finished difference Result 239 states and 259 transitions. [2021-12-06 20:12:47,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 20:12:47,651 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.935483870967742) internal successors, (91), 32 states have internal predecessors, (91), 0 states have call successors, (0), 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 33 [2021-12-06 20:12:47,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:12:47,652 INFO L225 Difference]: With dead ends: 239 [2021-12-06 20:12:47,653 INFO L226 Difference]: Without dead ends: 239 [2021-12-06 20:12:47,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=346, Invalid=1643, Unknown=3, NotChecked=264, Total=2256 [2021-12-06 20:12:47,654 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 389 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 1451 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 2115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 589 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 20:12:47,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [389 Valid, 756 Invalid, 2115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1451 Invalid, 0 Unknown, 589 Unchecked, 0.5s Time] [2021-12-06 20:12:47,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-12-06 20:12:47,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 181. [2021-12-06 20:12:47,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 158 states have (on average 1.2468354430379747) internal successors, (197), 180 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:47,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 197 transitions. [2021-12-06 20:12:47,657 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 197 transitions. Word has length 33 [2021-12-06 20:12:47,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:12:47,657 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 197 transitions. [2021-12-06 20:12:47,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.935483870967742) internal successors, (91), 32 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:47,658 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 197 transitions. [2021-12-06 20:12:47,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 20:12:47,658 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:12:47,658 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] [2021-12-06 20:12:47,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-06 20:12:47,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-12-06 20:12:47,860 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:12:47,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:12:47,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1639111831, now seen corresponding path program 1 times [2021-12-06 20:12:47,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:12:47,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677739053] [2021-12-06 20:12:47,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:12:47,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:12:47,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:12:48,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:12:48,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:12:48,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677739053] [2021-12-06 20:12:48,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677739053] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:12:48,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711201214] [2021-12-06 20:12:48,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:12:48,262 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:12:48,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:12:48,262 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:12:48,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 20:12:48,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:12:48,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 46 conjunts are in the unsatisfiable core [2021-12-06 20:12:48,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:12:48,342 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 [2021-12-06 20:12:48,352 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 [2021-12-06 20:12:48,397 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 20:12:48,397 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 [2021-12-06 20:12:48,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 20:12:48,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:12:48,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 20:12:48,468 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 16 treesize of output 8 [2021-12-06 20:12:48,510 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 16 treesize of output 18 [2021-12-06 20:12:48,529 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 16 treesize of output 18 [2021-12-06 20:12:48,541 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 20:12:48,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-06 20:12:48,566 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 16 treesize of output 18 [2021-12-06 20:12:48,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 20:12:48,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 16 treesize of output 8 [2021-12-06 20:12:48,640 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 16 treesize of output 18 [2021-12-06 20:12:48,647 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 16 treesize of output 18 [2021-12-06 20:12:48,668 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 19 treesize of output 7 [2021-12-06 20:12:48,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:12:48,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:12:48,684 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1043 (Array Int Int))) (= ~unnamed1~0~BLACK (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1043) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)))) is different from false [2021-12-06 20:12:48,691 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1043 (Array Int Int))) (= ~unnamed1~0~BLACK (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem8#1.base| v_ArrVal_1043) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)))) is different from false [2021-12-06 20:12:48,696 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1043 (Array Int Int))) (= ~unnamed1~0~BLACK (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_1043) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)))) is different from false [2021-12-06 20:12:48,703 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1043 (Array Int Int)) (v_ArrVal_1040 (Array Int Int))) (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1040) |c_ULTIMATE.start_main_#t~malloc7#1.base| v_ArrVal_1043) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)))) is different from false [2021-12-06 20:12:48,740 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1043 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc7#1.base_6| Int) (v_ArrVal_1040 (Array Int Int))) (or (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1040) |v_ULTIMATE.start_main_#t~malloc7#1.base_6| v_ArrVal_1043) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4))) (not (= 0 (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc7#1.base_6|))))) is different from false [2021-12-06 20:12:48,836 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 20:12:48,836 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 13 treesize of output 12 [2021-12-06 20:12:48,845 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1036 Int) (v_ArrVal_1043 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc7#1.base_6| Int) (v_ArrVal_1040 (Array Int Int))) (or (= |c_ULTIMATE.start_main_~end~0#1.base| |v_ULTIMATE.start_main_#t~malloc7#1.base_6|) (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_1036)) |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_1040) |v_ULTIMATE.start_main_#t~malloc7#1.base_6| v_ArrVal_1043) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4))))) is different from false [2021-12-06 20:12:48,972 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.offset_72| Int) (v_ArrVal_1036 Int) (v_ArrVal_1043 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc7#1.base_6| Int) (|v_ULTIMATE.start_main_#t~malloc4#1.base_12| Int) (v_ArrVal_1040 (Array Int Int))) (or (< |c_ULTIMATE.start_main_~list~0#1.offset| |v_ULTIMATE.start_main_~end~0#1.offset_72|) (= |v_ULTIMATE.start_main_#t~malloc7#1.base_6| |c_ULTIMATE.start_main_~list~0#1.base|) (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) |v_ULTIMATE.start_main_~end~0#1.offset_72| v_ArrVal_1036)) |v_ULTIMATE.start_main_#t~malloc4#1.base_12| v_ArrVal_1040) |v_ULTIMATE.start_main_#t~malloc7#1.base_6| v_ArrVal_1043) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc4#1.base_12|) 0)))) is different from false [2021-12-06 20:12:48,982 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:12:48,985 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:12:48,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 34 [2021-12-06 20:12:48,989 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:12:48,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 36 treesize of output 24 [2021-12-06 20:12:48,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-06 20:12:49,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:12:49,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711201214] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:12:49,013 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:12:49,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 17] total 43 [2021-12-06 20:12:49,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706631847] [2021-12-06 20:12:49,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:12:49,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-12-06 20:12:49,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:12:49,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-12-06 20:12:49,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1063, Unknown=17, NotChecked=518, Total=1806 [2021-12-06 20:12:49,015 INFO L87 Difference]: Start difference. First operand 181 states and 197 transitions. Second operand has 43 states, 43 states have (on average 1.9069767441860466) internal successors, (82), 43 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:49,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:12:49,817 INFO L93 Difference]: Finished difference Result 424 states and 460 transitions. [2021-12-06 20:12:49,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-06 20:12:49,818 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.9069767441860466) internal successors, (82), 43 states have internal predecessors, (82), 0 states have call successors, (0), 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 33 [2021-12-06 20:12:49,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:12:49,819 INFO L225 Difference]: With dead ends: 424 [2021-12-06 20:12:49,819 INFO L226 Difference]: Without dead ends: 424 [2021-12-06 20:12:49,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 48 SyntacticMatches, 5 SemanticMatches, 55 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=434, Invalid=2027, Unknown=17, NotChecked=714, Total=3192 [2021-12-06 20:12:49,821 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 696 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 2585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1465 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 20:12:49,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [696 Valid, 920 Invalid, 2585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 975 Invalid, 0 Unknown, 1465 Unchecked, 0.4s Time] [2021-12-06 20:12:49,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-12-06 20:12:49,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 189. [2021-12-06 20:12:49,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 166 states have (on average 1.2349397590361446) internal successors, (205), 188 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:49,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 205 transitions. [2021-12-06 20:12:49,825 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 205 transitions. Word has length 33 [2021-12-06 20:12:49,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:12:49,825 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 205 transitions. [2021-12-06 20:12:49,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.9069767441860466) internal successors, (82), 43 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:49,825 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 205 transitions. [2021-12-06 20:12:49,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-06 20:12:49,825 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:12:49,825 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] [2021-12-06 20:12:49,845 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 20:12:50,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:12:50,026 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:12:50,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:12:50,026 INFO L85 PathProgramCache]: Analyzing trace with hash 705439333, now seen corresponding path program 1 times [2021-12-06 20:12:50,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:12:50,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613140475] [2021-12-06 20:12:50,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:12:50,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:12:50,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:12:50,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 20:12:50,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:12:50,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613140475] [2021-12-06 20:12:50,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613140475] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:12:50,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425357176] [2021-12-06 20:12:50,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:12:50,154 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:12:50,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:12:50,155 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:12:50,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 20:12:50,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:12:50,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-06 20:12:50,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:12:50,256 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-12-06 20:12:50,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 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 20 treesize of output 14 [2021-12-06 20:12:50,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 20:12:50,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2021-12-06 20:12:50,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 20:12:50,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:12:50,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 20:12:50,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425357176] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:12:50,772 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:12:50,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2021-12-06 20:12:50,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446196677] [2021-12-06 20:12:50,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:12:50,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 20:12:50,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:12:50,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 20:12:50,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-12-06 20:12:50,773 INFO L87 Difference]: Start difference. First operand 189 states and 205 transitions. Second operand has 15 states, 14 states have (on average 6.785714285714286) internal successors, (95), 15 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:51,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:12:51,075 INFO L93 Difference]: Finished difference Result 225 states and 240 transitions. [2021-12-06 20:12:51,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 20:12:51,076 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 6.785714285714286) internal successors, (95), 15 states have internal predecessors, (95), 0 states have call successors, (0), 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 35 [2021-12-06 20:12:51,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:12:51,077 INFO L225 Difference]: With dead ends: 225 [2021-12-06 20:12:51,077 INFO L226 Difference]: Without dead ends: 190 [2021-12-06 20:12:51,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 60 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2021-12-06 20:12:51,077 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 157 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 317 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:12:51,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 676 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 449 Invalid, 0 Unknown, 317 Unchecked, 0.2s Time] [2021-12-06 20:12:51,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-12-06 20:12:51,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 165. [2021-12-06 20:12:51,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 142 states have (on average 1.2535211267605635) internal successors, (178), 164 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:51,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 178 transitions. [2021-12-06 20:12:51,084 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 178 transitions. Word has length 35 [2021-12-06 20:12:51,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:12:51,084 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 178 transitions. [2021-12-06 20:12:51,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.785714285714286) internal successors, (95), 15 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:51,085 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 178 transitions. [2021-12-06 20:12:51,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-06 20:12:51,085 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:12:51,085 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 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] [2021-12-06 20:12:51,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 20:12:51,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:12:51,286 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:12:51,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:12:51,286 INFO L85 PathProgramCache]: Analyzing trace with hash 283994547, now seen corresponding path program 2 times [2021-12-06 20:12:51,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:12:51,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052738711] [2021-12-06 20:12:51,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:12:51,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:12:51,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:12:51,458 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:12:51,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:12:51,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052738711] [2021-12-06 20:12:51,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052738711] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:12:51,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030969024] [2021-12-06 20:12:51,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 20:12:51,459 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:12:51,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:12:51,460 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:12:51,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 20:12:51,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 20:12:51,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:12:51,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 65 conjunts are in the unsatisfiable core [2021-12-06 20:12:51,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:12:51,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 20:12:51,620 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 20:12:51,621 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 [2021-12-06 20:12:51,650 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 [2021-12-06 20:12:51,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 20:12:51,753 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-06 20:12:51,753 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 27 treesize of output 22 [2021-12-06 20:12:51,758 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 26 treesize of output 21 [2021-12-06 20:12:51,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:12:51,827 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 20:12:51,827 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 1 case distinctions, treesize of input 89 treesize of output 70 [2021-12-06 20:12:51,833 INFO L354 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2021-12-06 20:12:51,833 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 4 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 55 [2021-12-06 20:12:52,105 INFO L354 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2021-12-06 20:12:52,105 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 61 treesize of output 35 [2021-12-06 20:12:52,110 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 20:12:52,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-12-06 20:12:52,148 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:12:52,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:13:10,994 WARN L227 SmtUtils]: Spent 7.53s on a formula simplification that was a NOOP. DAG size: 36 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 20:13:22,593 WARN L227 SmtUtils]: Spent 7.43s on a formula simplification that was a NOOP. DAG size: 40 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 20:13:22,613 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 1388 treesize of output 1380 [2021-12-06 20:13:22,623 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:13:23,876 INFO L354 Elim1Store]: treesize reduction 591, result has 51.0 percent of original size [2021-12-06 20:13:23,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 15 new quantified variables, introduced 92 case distinctions, treesize of input 75662 treesize of output 73656 [2021-12-06 20:13:31,985 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:13:31,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 58780 treesize of output 58840 [2021-12-06 20:13:32,453 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-12-06 20:13:32,453 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:13:32,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-12-06 20:13:32,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034232354] [2021-12-06 20:13:32,454 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 20:13:32,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 20:13:32,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:13:32,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 20:13:32,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=939, Unknown=6, NotChecked=0, Total=1056 [2021-12-06 20:13:32,455 INFO L87 Difference]: Start difference. First operand 165 states and 178 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 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) [2021-12-06 20:13:33,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:13:33,071 INFO L93 Difference]: Finished difference Result 212 states and 228 transitions. [2021-12-06 20:13:33,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 20:13:33,072 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 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 [2021-12-06 20:13:33,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:13:33,073 INFO L225 Difference]: With dead ends: 212 [2021-12-06 20:13:33,073 INFO L226 Difference]: Without dead ends: 212 [2021-12-06 20:13:33,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 30.9s TimeCoverageRelationStatistics Valid=229, Invalid=2021, Unknown=6, NotChecked=0, Total=2256 [2021-12-06 20:13:33,074 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 261 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 20:13:33,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 490 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 932 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 20:13:33,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-12-06 20:13:33,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 167. [2021-12-06 20:13:33,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 144 states have (on average 1.25) internal successors, (180), 166 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:33,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 180 transitions. [2021-12-06 20:13:33,077 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 180 transitions. Word has length 38 [2021-12-06 20:13:33,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:13:33,077 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 180 transitions. [2021-12-06 20:13:33,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 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) [2021-12-06 20:13:33,077 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 180 transitions. [2021-12-06 20:13:33,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-06 20:13:33,078 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:13:33,078 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 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] [2021-12-06 20:13:33,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 20:13:33,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-12-06 20:13:33,279 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:13:33,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:13:33,280 INFO L85 PathProgramCache]: Analyzing trace with hash 241976294, now seen corresponding path program 1 times [2021-12-06 20:13:33,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:13:33,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405764721] [2021-12-06 20:13:33,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:13:33,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:13:33,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:13:33,637 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:13:33,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:13:33,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405764721] [2021-12-06 20:13:33,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405764721] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:13:33,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526671641] [2021-12-06 20:13:33,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:13:33,638 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:13:33,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:13:33,639 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:13:33,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 20:13:33,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:13:33,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 55 conjunts are in the unsatisfiable core [2021-12-06 20:13:33,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:13:33,721 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 [2021-12-06 20:13:33,763 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 20:13:33,763 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 [2021-12-06 20:13:33,786 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 [2021-12-06 20:13:33,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 20:13:33,872 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 20:13:33,872 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 21 treesize of output 25 [2021-12-06 20:13:33,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 20:13:33,890 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 20:13:33,890 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 22 treesize of output 22 [2021-12-06 20:13:33,955 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 20:13:33,955 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 50 treesize of output 47 [2021-12-06 20:13:33,958 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 21 treesize of output 13 [2021-12-06 20:13:33,961 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 25 [2021-12-06 20:13:34,158 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 29 treesize of output 17 [2021-12-06 20:13:34,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 22 treesize of output 10 [2021-12-06 20:13:34,234 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:13:34,235 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:13:34,236 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 19 treesize of output 10 [2021-12-06 20:13:34,262 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:13:34,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:13:34,444 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 82 treesize of output 62 [2021-12-06 20:13:34,462 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1323 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1323) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))) (or (and (= .cse0 |c_ULTIMATE.start_main_~end~0#1.offset|) (forall ((v_ArrVal_1321 (Array Int Int))) (= |c_ULTIMATE.start_main_~end~0#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1321) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)))) (< .cse0 0)))) is different from false [2021-12-06 20:13:34,587 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1323 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_1323) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))) (or (< .cse0 0) (let ((.cse1 (< |c_ULTIMATE.start_main_#t~mem5#1.offset| 0))) (and (or .cse1 (<= .cse0 0)) (<= |c_ULTIMATE.start_main_#t~mem5#1.offset| .cse0) (or .cse1 (forall ((v_ArrVal_1321 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_1321) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) |c_ULTIMATE.start_main_#t~mem5#1.base|)))))))) is different from false [2021-12-06 20:13:34,650 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1323 (Array Int Int))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_1323) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))) (or (let ((.cse3 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|))) (let ((.cse0 (< .cse3 0))) (and (or .cse0 (<= .cse1 0)) (or .cse0 (forall ((v_ArrVal_1321 (Array Int Int))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|))) (= .cse2 (select (select (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_1321) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))))) (<= .cse3 .cse1)))) (< .cse1 0)))) is different from false [2021-12-06 20:13:34,685 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:13:34,685 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 66 [2021-12-06 20:13:34,688 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:13:34,688 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 66 [2021-12-06 20:13:34,694 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:13:34,694 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 100 treesize of output 95 [2021-12-06 20:13:34,700 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:13:34,700 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 106 treesize of output 109 [2021-12-06 20:13:34,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 103 [2021-12-06 20:13:34,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 55 [2021-12-06 20:13:34,960 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:13:34,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526671641] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:13:34,960 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:13:34,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14, 15] total 44 [2021-12-06 20:13:34,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878557788] [2021-12-06 20:13:34,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:13:34,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-12-06 20:13:34,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:13:34,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-12-06 20:13:34,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1506, Unknown=6, NotChecked=240, Total=1892 [2021-12-06 20:13:34,961 INFO L87 Difference]: Start difference. First operand 167 states and 180 transitions. Second operand has 44 states, 44 states have (on average 2.340909090909091) internal successors, (103), 44 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:36,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:13:36,191 INFO L93 Difference]: Finished difference Result 166 states and 178 transitions. [2021-12-06 20:13:36,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 20:13:36,192 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.340909090909091) internal successors, (103), 44 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-12-06 20:13:36,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:13:36,193 INFO L225 Difference]: With dead ends: 166 [2021-12-06 20:13:36,193 INFO L226 Difference]: Without dead ends: 166 [2021-12-06 20:13:36,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 54 SyntacticMatches, 5 SemanticMatches, 59 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=373, Invalid=2939, Unknown=6, NotChecked=342, Total=3660 [2021-12-06 20:13:36,194 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 150 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 543 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 20:13:36,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 892 Invalid, 1448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 872 Invalid, 0 Unknown, 543 Unchecked, 0.4s Time] [2021-12-06 20:13:36,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-12-06 20:13:36,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-12-06 20:13:36,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 143 states have (on average 1.2447552447552448) internal successors, (178), 165 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:36,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 178 transitions. [2021-12-06 20:13:36,197 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 178 transitions. Word has length 38 [2021-12-06 20:13:36,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:13:36,197 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 178 transitions. [2021-12-06 20:13:36,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.340909090909091) internal successors, (103), 44 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:36,198 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 178 transitions. [2021-12-06 20:13:36,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-06 20:13:36,198 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:13:36,198 INFO L514 BasicCegarLoop]: trace histogram [2, 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] [2021-12-06 20:13:36,218 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 20:13:36,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:13:36,400 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:13:36,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:13:36,401 INFO L85 PathProgramCache]: Analyzing trace with hash 896234639, now seen corresponding path program 1 times [2021-12-06 20:13:36,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:13:36,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672646668] [2021-12-06 20:13:36,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:13:36,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:13:36,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:13:36,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:13:36,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:13:36,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672646668] [2021-12-06 20:13:36,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672646668] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:13:36,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787244118] [2021-12-06 20:13:36,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:13:36,607 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:13:36,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:13:36,608 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:13:36,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 20:13:36,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:13:36,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 46 conjunts are in the unsatisfiable core [2021-12-06 20:13:36,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:13:36,693 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 [2021-12-06 20:13:36,743 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 20:13:36,744 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 [2021-12-06 20:13:36,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 20:13:36,844 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 20:13:36,844 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 22 treesize of output 22 [2021-12-06 20:13:36,869 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 20:13:36,869 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 22 treesize of output 22 [2021-12-06 20:13:36,879 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 20:13:36,879 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 [2021-12-06 20:13:36,909 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-06 20:13:36,909 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 27 treesize of output 22 [2021-12-06 20:13:37,014 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-12-06 20:13:37,015 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 47 treesize of output 49 [2021-12-06 20:13:37,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2021-12-06 20:13:37,081 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-12-06 20:13:37,081 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 56 treesize of output 56 [2021-12-06 20:13:37,084 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Should have been eliminated by DER [2021-12-06 20:13:37,084 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:13:37,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-12-06 20:13:37,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562130232] [2021-12-06 20:13:37,084 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 20:13:37,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-06 20:13:37,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:13:37,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-06 20:13:37,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=609, Unknown=0, NotChecked=0, Total=702 [2021-12-06 20:13:37,085 INFO L87 Difference]: Start difference. First operand 166 states and 178 transitions. Second operand has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 16 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) [2021-12-06 20:13:37,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 20:13:37,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=609, Unknown=0, NotChecked=0, Total=702 [2021-12-06 20:13:37,086 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:13:37,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:13:37,106 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-06 20:13:37,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-06 20:13:37,289 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@32da9b01 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:360) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:455) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:103) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-06 20:13:37,299 INFO L158 Benchmark]: Toolchain (without parser) took 61984.06ms. Allocated memory was 119.5MB in the beginning and 337.6MB in the end (delta: 218.1MB). Free memory was 78.1MB in the beginning and 129.3MB in the end (delta: -51.2MB). Peak memory consumption was 165.3MB. Max. memory is 16.1GB. [2021-12-06 20:13:37,299 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 119.5MB. Free memory is still 95.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 20:13:37,299 INFO L158 Benchmark]: CACSL2BoogieTranslator took 265.95ms. Allocated memory is still 119.5MB. Free memory was 78.0MB in the beginning and 84.9MB in the end (delta: -6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 20:13:37,299 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.28ms. Allocated memory is still 119.5MB. Free memory was 84.3MB in the beginning and 82.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 20:13:37,299 INFO L158 Benchmark]: Boogie Preprocessor took 23.24ms. Allocated memory is still 119.5MB. Free memory was 82.2MB in the beginning and 80.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 20:13:37,300 INFO L158 Benchmark]: RCFGBuilder took 439.72ms. Allocated memory is still 119.5MB. Free memory was 80.7MB in the beginning and 61.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-12-06 20:13:37,300 INFO L158 Benchmark]: TraceAbstraction took 61217.93ms. Allocated memory was 119.5MB in the beginning and 337.6MB in the end (delta: 218.1MB). Free memory was 61.3MB in the beginning and 129.3MB in the end (delta: -68.1MB). Peak memory consumption was 150.6MB. Max. memory is 16.1GB. [2021-12-06 20:13:37,301 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 119.5MB. Free memory is still 95.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 265.95ms. Allocated memory is still 119.5MB. Free memory was 78.0MB in the beginning and 84.9MB in the end (delta: -6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.28ms. Allocated memory is still 119.5MB. Free memory was 84.3MB in the beginning and 82.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.24ms. Allocated memory is still 119.5MB. Free memory was 82.2MB in the beginning and 80.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 439.72ms. Allocated memory is still 119.5MB. Free memory was 80.7MB in the beginning and 61.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 61217.93ms. Allocated memory was 119.5MB in the beginning and 337.6MB in the end (delta: 218.1MB). Free memory was 61.3MB in the beginning and 129.3MB in the end (delta: -68.1MB). Peak memory consumption was 150.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@32da9b01 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@32da9b01: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-06 20:13:37,321 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa --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 b05b18c0458ef705f828769f88cc2a590589ce4d5c3f0e48f99be90a949f7ed4 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 20:13:38,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 20:13:38,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 20:13:38,829 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 20:13:38,830 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 20:13:38,831 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 20:13:38,832 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 20:13:38,834 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 20:13:38,835 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 20:13:38,836 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 20:13:38,837 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 20:13:38,838 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 20:13:38,839 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 20:13:38,840 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 20:13:38,841 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 20:13:38,842 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 20:13:38,843 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 20:13:38,844 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 20:13:38,851 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 20:13:38,853 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 20:13:38,855 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 20:13:38,856 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 20:13:38,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 20:13:38,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 20:13:38,863 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 20:13:38,863 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 20:13:38,863 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 20:13:38,865 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 20:13:38,865 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 20:13:38,867 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 20:13:38,867 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 20:13:38,868 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 20:13:38,869 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 20:13:38,869 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 20:13:38,871 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 20:13:38,871 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 20:13:38,872 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 20:13:38,872 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 20:13:38,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 20:13:38,873 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 20:13:38,874 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 20:13:38,874 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-06 20:13:38,898 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 20:13:38,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 20:13:38,899 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 20:13:38,899 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 20:13:38,900 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 20:13:38,900 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 20:13:38,901 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 20:13:38,901 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 20:13:38,901 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 20:13:38,901 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 20:13:38,901 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 20:13:38,902 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 20:13:38,902 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 20:13:38,902 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 20:13:38,902 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 20:13:38,902 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 20:13:38,903 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 20:13:38,903 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 20:13:38,903 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 20:13:38,903 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 20:13:38,903 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-06 20:13:38,903 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-06 20:13:38,903 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 20:13:38,903 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 20:13:38,904 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 20:13:38,904 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 20:13:38,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 20:13:38,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:13:38,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 20:13:38,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 20:13:38,904 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-06 20:13:38,904 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-06 20:13:38,905 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 20:13:38,905 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-06 20:13:38,905 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b05b18c0458ef705f828769f88cc2a590589ce4d5c3f0e48f99be90a949f7ed4 [2021-12-06 20:13:39,136 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 20:13:39,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 20:13:39,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 20:13:39,158 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 20:13:39,158 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 20:13:39,159 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i [2021-12-06 20:13:39,202 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/data/54777a3d7/0cb2d0d84c6a48e696bb9620342c85d1/FLAGba3979fa7 [2021-12-06 20:13:39,648 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 20:13:39,649 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i [2021-12-06 20:13:39,661 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/data/54777a3d7/0cb2d0d84c6a48e696bb9620342c85d1/FLAGba3979fa7 [2021-12-06 20:13:39,674 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/data/54777a3d7/0cb2d0d84c6a48e696bb9620342c85d1 [2021-12-06 20:13:39,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 20:13:39,677 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 20:13:39,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 20:13:39,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 20:13:39,682 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 20:13:39,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:13:39" (1/1) ... [2021-12-06 20:13:39,683 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@738d7811 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:13:39, skipping insertion in model container [2021-12-06 20:13:39,683 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:13:39" (1/1) ... [2021-12-06 20:13:39,688 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 20:13:39,720 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 20:13:39,953 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_5a800bd6-c448-4a77-87ec-1f1c67281149/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22534,22547] [2021-12-06 20:13:39,956 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_5a800bd6-c448-4a77-87ec-1f1c67281149/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22606,22619] [2021-12-06 20:13:39,957 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_5a800bd6-c448-4a77-87ec-1f1c67281149/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22746,22759] [2021-12-06 20:13:39,958 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_5a800bd6-c448-4a77-87ec-1f1c67281149/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22820,22833] [2021-12-06 20:13:39,964 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:13:39,975 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 20:13:40,003 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_5a800bd6-c448-4a77-87ec-1f1c67281149/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22534,22547] [2021-12-06 20:13:40,004 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_5a800bd6-c448-4a77-87ec-1f1c67281149/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22606,22619] [2021-12-06 20:13:40,005 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_5a800bd6-c448-4a77-87ec-1f1c67281149/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22746,22759] [2021-12-06 20:13:40,006 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_5a800bd6-c448-4a77-87ec-1f1c67281149/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22820,22833] [2021-12-06 20:13:40,008 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:13:40,032 INFO L208 MainTranslator]: Completed translation [2021-12-06 20:13:40,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:13:40 WrapperNode [2021-12-06 20:13:40,033 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 20:13:40,034 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 20:13:40,034 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 20:13:40,034 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 20:13:40,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:13:40" (1/1) ... [2021-12-06 20:13:40,053 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:13:40" (1/1) ... [2021-12-06 20:13:40,071 INFO L137 Inliner]: procedures = 122, calls = 36, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 133 [2021-12-06 20:13:40,071 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 20:13:40,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 20:13:40,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 20:13:40,072 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 20:13:40,079 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:13:40" (1/1) ... [2021-12-06 20:13:40,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:13:40" (1/1) ... [2021-12-06 20:13:40,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:13:40" (1/1) ... [2021-12-06 20:13:40,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:13:40" (1/1) ... [2021-12-06 20:13:40,092 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:13:40" (1/1) ... [2021-12-06 20:13:40,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:13:40" (1/1) ... [2021-12-06 20:13:40,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:13:40" (1/1) ... [2021-12-06 20:13:40,101 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 20:13:40,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 20:13:40,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 20:13:40,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 20:13:40,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:13:40" (1/1) ... [2021-12-06 20:13:40,108 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:13:40,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:13:40,126 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 20:13:40,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 20:13:40,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-06 20:13:40,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 20:13:40,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 20:13:40,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 20:13:40,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 20:13:40,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 20:13:40,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-06 20:13:40,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-06 20:13:40,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 20:13:40,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 20:13:40,233 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 20:13:40,234 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 20:13:40,634 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 20:13:40,640 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 20:13:40,640 INFO L301 CfgBuilder]: Removed 11 assume(true) statements. [2021-12-06 20:13:40,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:13:40 BoogieIcfgContainer [2021-12-06 20:13:40,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 20:13:40,643 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 20:13:40,643 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 20:13:40,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 20:13:40,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 08:13:39" (1/3) ... [2021-12-06 20:13:40,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fe9aed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:13:40, skipping insertion in model container [2021-12-06 20:13:40,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:13:40" (2/3) ... [2021-12-06 20:13:40,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fe9aed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:13:40, skipping insertion in model container [2021-12-06 20:13:40,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:13:40" (3/3) ... [2021-12-06 20:13:40,647 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-1.i [2021-12-06 20:13:40,651 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 20:13:40,651 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 61 error locations. [2021-12-06 20:13:40,687 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 20:13:40,692 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 [2021-12-06 20:13:40,693 INFO L340 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2021-12-06 20:13:40,705 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 69 states have (on average 2.1884057971014492) internal successors, (151), 130 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:40,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-06 20:13:40,710 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:13:40,711 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-06 20:13:40,711 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:13:40,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:13:40,715 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-12-06 20:13:40,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:13:40,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [465046535] [2021-12-06 20:13:40,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:13:40,725 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:13:40,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:13:40,726 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:13:40,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-06 20:13:40,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:13:40,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 20:13:40,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:13:40,848 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 [2021-12-06 20:13:40,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:13:40,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:13:40,858 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:13:40,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [465046535] [2021-12-06 20:13:40,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [465046535] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:13:40,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:13:40,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 20:13:40,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000759046] [2021-12-06 20:13:40,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:13:40,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:13:40,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:13:40,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:13:40,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:13:40,895 INFO L87 Difference]: Start difference. First operand has 131 states, 69 states have (on average 2.1884057971014492) internal successors, (151), 130 states have internal predecessors, (151), 0 states have call successors, (0), 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) [2021-12-06 20:13:41,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:13:41,114 INFO L93 Difference]: Finished difference Result 159 states and 166 transitions. [2021-12-06 20:13:41,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:13:41,116 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 [2021-12-06 20:13:41,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:13:41,126 INFO L225 Difference]: With dead ends: 159 [2021-12-06 20:13:41,126 INFO L226 Difference]: Without dead ends: 157 [2021-12-06 20:13:41,128 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 [2021-12-06 20:13:41,131 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 112 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:13:41,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 98 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 20:13:41,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-12-06 20:13:41,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 131. [2021-12-06 20:13:41,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 72 states have (on average 1.9305555555555556) internal successors, (139), 130 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:41,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 139 transitions. [2021-12-06 20:13:41,168 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 139 transitions. Word has length 3 [2021-12-06 20:13:41,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:13:41,168 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 139 transitions. [2021-12-06 20:13:41,168 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) [2021-12-06 20:13:41,168 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 139 transitions. [2021-12-06 20:13:41,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-06 20:13:41,169 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:13:41,169 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-06 20:13:41,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-06 20:13:41,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:13:41,370 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:13:41,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:13:41,373 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-12-06 20:13:41,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:13:41,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1722288559] [2021-12-06 20:13:41,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:13:41,376 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:13:41,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:13:41,379 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:13:41,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-06 20:13:41,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:13:41,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 20:13:41,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:13:41,526 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 [2021-12-06 20:13:41,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:13:41,540 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:13:41,541 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:13:41,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1722288559] [2021-12-06 20:13:41,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1722288559] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:13:41,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:13:41,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 20:13:41,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394103114] [2021-12-06 20:13:41,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:13:41,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:13:41,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:13:41,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:13:41,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:13:41,544 INFO L87 Difference]: Start difference. First operand 131 states and 139 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) [2021-12-06 20:13:41,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:13:41,727 INFO L93 Difference]: Finished difference Result 128 states and 135 transitions. [2021-12-06 20:13:41,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:13:41,727 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 [2021-12-06 20:13:41,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:13:41,729 INFO L225 Difference]: With dead ends: 128 [2021-12-06 20:13:41,729 INFO L226 Difference]: Without dead ends: 128 [2021-12-06 20:13:41,729 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 [2021-12-06 20:13:41,731 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 124 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:13:41,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 71 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 20:13:41,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-12-06 20:13:41,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-12-06 20:13:41,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 72 states have (on average 1.875) internal successors, (135), 127 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:41,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 135 transitions. [2021-12-06 20:13:41,742 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 135 transitions. Word has length 3 [2021-12-06 20:13:41,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:13:41,742 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 135 transitions. [2021-12-06 20:13:41,742 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) [2021-12-06 20:13:41,742 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 135 transitions. [2021-12-06 20:13:41,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 20:13:41,743 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:13:41,743 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 20:13:41,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-06 20:13:41,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:13:41,944 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:13:41,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:13:41,946 INFO L85 PathProgramCache]: Analyzing trace with hash 889446152, now seen corresponding path program 1 times [2021-12-06 20:13:41,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:13:41,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [343881181] [2021-12-06 20:13:41,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:13:41,950 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:13:41,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:13:41,952 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:13:41,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-06 20:13:42,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:13:42,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 20:13:42,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:13:42,083 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 [2021-12-06 20:13:42,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:13:42,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:13:42,088 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:13:42,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [343881181] [2021-12-06 20:13:42,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [343881181] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:13:42,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:13:42,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 20:13:42,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413260095] [2021-12-06 20:13:42,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:13:42,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:13:42,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:13:42,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:13:42,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:13:42,090 INFO L87 Difference]: Start difference. First operand 128 states and 135 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:42,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:13:42,233 INFO L93 Difference]: Finished difference Result 125 states and 131 transitions. [2021-12-06 20:13:42,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:13:42,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-06 20:13:42,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:13:42,234 INFO L225 Difference]: With dead ends: 125 [2021-12-06 20:13:42,235 INFO L226 Difference]: Without dead ends: 125 [2021-12-06 20:13:42,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:13:42,236 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 100 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:13:42,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 80 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:13:42,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-12-06 20:13:42,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 123. [2021-12-06 20:13:42,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 73 states have (on average 1.7945205479452055) internal successors, (131), 122 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) [2021-12-06 20:13:42,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 131 transitions. [2021-12-06 20:13:42,242 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 131 transitions. Word has length 6 [2021-12-06 20:13:42,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:13:42,242 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 131 transitions. [2021-12-06 20:13:42,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:42,243 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 131 transitions. [2021-12-06 20:13:42,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 20:13:42,243 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:13:42,243 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 20:13:42,249 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-12-06 20:13:42,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:13:42,445 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:13:42,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:13:42,447 INFO L85 PathProgramCache]: Analyzing trace with hash 889446153, now seen corresponding path program 1 times [2021-12-06 20:13:42,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:13:42,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1815243614] [2021-12-06 20:13:42,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:13:42,450 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:13:42,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:13:42,452 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:13:42,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-06 20:13:42,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:13:42,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 20:13:42,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:13:42,607 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 [2021-12-06 20:13:42,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:13:42,615 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:13:42,615 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:13:42,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1815243614] [2021-12-06 20:13:42,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1815243614] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:13:42,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:13:42,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 20:13:42,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645978230] [2021-12-06 20:13:42,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:13:42,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:13:42,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:13:42,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:13:42,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:13:42,616 INFO L87 Difference]: Start difference. First operand 123 states and 131 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:42,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:13:42,798 INFO L93 Difference]: Finished difference Result 141 states and 147 transitions. [2021-12-06 20:13:42,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:13:42,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-06 20:13:42,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:13:42,800 INFO L225 Difference]: With dead ends: 141 [2021-12-06 20:13:42,803 INFO L226 Difference]: Without dead ends: 141 [2021-12-06 20:13:42,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:13:42,804 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 99 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:13:42,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 89 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 20:13:42,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-12-06 20:13:42,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 128. [2021-12-06 20:13:42,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 80 states have (on average 1.7) internal successors, (136), 127 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:42,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 136 transitions. [2021-12-06 20:13:42,814 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 136 transitions. Word has length 6 [2021-12-06 20:13:42,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:13:42,814 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 136 transitions. [2021-12-06 20:13:42,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:42,814 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 136 transitions. [2021-12-06 20:13:42,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 20:13:42,815 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:13:42,815 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:13:42,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-12-06 20:13:43,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:13:43,016 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:13:43,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:13:43,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1113926540, now seen corresponding path program 1 times [2021-12-06 20:13:43,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:13:43,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [340440891] [2021-12-06 20:13:43,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:13:43,022 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:13:43,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:13:43,025 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:13:43,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-06 20:13:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:13:43,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 20:13:43,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:13:43,102 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 [2021-12-06 20:13:43,140 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-06 20:13:43,140 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 20 treesize of output 25 [2021-12-06 20:13:43,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:13:43,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:13:43,160 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:13:43,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [340440891] [2021-12-06 20:13:43,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [340440891] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:13:43,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:13:43,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:13:43,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150022696] [2021-12-06 20:13:43,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:13:43,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:13:43,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:13:43,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:13:43,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:13:43,162 INFO L87 Difference]: Start difference. First operand 128 states and 136 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:43,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:13:43,418 INFO L93 Difference]: Finished difference Result 132 states and 142 transitions. [2021-12-06 20:13:43,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:13:43,418 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2021-12-06 20:13:43,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:13:43,419 INFO L225 Difference]: With dead ends: 132 [2021-12-06 20:13:43,419 INFO L226 Difference]: Without dead ends: 132 [2021-12-06 20:13:43,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:13:43,420 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 158 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:13:43,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 72 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 20:13:43,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-12-06 20:13:43,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 119. [2021-12-06 20:13:43,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 82 states have (on average 1.5731707317073171) 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) [2021-12-06 20:13:43,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 129 transitions. [2021-12-06 20:13:43,425 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 129 transitions. Word has length 10 [2021-12-06 20:13:43,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:13:43,426 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 129 transitions. [2021-12-06 20:13:43,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:43,426 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 129 transitions. [2021-12-06 20:13:43,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 20:13:43,426 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:13:43,426 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:13:43,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-12-06 20:13:43,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:13:43,627 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:13:43,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:13:43,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1113926541, now seen corresponding path program 1 times [2021-12-06 20:13:43,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:13:43,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [22266931] [2021-12-06 20:13:43,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:13:43,631 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:13:43,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:13:43,634 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:13:43,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-06 20:13:43,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:13:43,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 20:13:43,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:13:43,771 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 [2021-12-06 20:13:43,821 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 20:13:43,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 20:13:43,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:13:43,833 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:13:43,833 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:13:43,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [22266931] [2021-12-06 20:13:43,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [22266931] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:13:43,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:13:43,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:13:43,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754374962] [2021-12-06 20:13:43,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:13:43,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:13:43,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:13:43,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:13:43,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:13:43,834 INFO L87 Difference]: Start difference. First operand 119 states and 129 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:44,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:13:44,115 INFO L93 Difference]: Finished difference Result 155 states and 165 transitions. [2021-12-06 20:13:44,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 20:13:44,115 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2021-12-06 20:13:44,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:13:44,116 INFO L225 Difference]: With dead ends: 155 [2021-12-06 20:13:44,116 INFO L226 Difference]: Without dead ends: 155 [2021-12-06 20:13:44,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:13:44,117 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 146 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 20:13:44,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 98 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 20:13:44,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-12-06 20:13:44,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 125. [2021-12-06 20:13:44,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 89 states have (on average 1.5280898876404494) internal successors, (136), 124 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:44,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 136 transitions. [2021-12-06 20:13:44,124 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 136 transitions. Word has length 10 [2021-12-06 20:13:44,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:13:44,124 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 136 transitions. [2021-12-06 20:13:44,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:44,125 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 136 transitions. [2021-12-06 20:13:44,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 20:13:44,125 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:13:44,125 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:13:44,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-12-06 20:13:44,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:13:44,328 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:13:44,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:13:44,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1036529431, now seen corresponding path program 1 times [2021-12-06 20:13:44,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:13:44,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182392814] [2021-12-06 20:13:44,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:13:44,331 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:13:44,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:13:44,333 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:13:44,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-06 20:13:44,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:13:44,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 20:13:44,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:13:44,443 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 [2021-12-06 20:13:44,460 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 20:13:44,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-12-06 20:13:44,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:13:44,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:13:44,481 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:13:44,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [182392814] [2021-12-06 20:13:44,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [182392814] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:13:44,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:13:44,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 20:13:44,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965665902] [2021-12-06 20:13:44,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:13:44,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 20:13:44,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:13:44,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 20:13:44,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:13:44,482 INFO L87 Difference]: Start difference. First operand 125 states and 136 transitions. Second operand has 5 states, 5 states have (on average 2.4) 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) [2021-12-06 20:13:44,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:13:44,762 INFO L93 Difference]: Finished difference Result 164 states and 174 transitions. [2021-12-06 20:13:44,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:13:44,763 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) 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 [2021-12-06 20:13:44,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:13:44,764 INFO L225 Difference]: With dead ends: 164 [2021-12-06 20:13:44,764 INFO L226 Difference]: Without dead ends: 164 [2021-12-06 20:13:44,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:13:44,765 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 225 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 20:13:44,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 125 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 20:13:44,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-12-06 20:13:44,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 126. [2021-12-06 20:13:44,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 91 states have (on average 1.5054945054945055) internal successors, (137), 125 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:44,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 137 transitions. [2021-12-06 20:13:44,770 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 137 transitions. Word has length 12 [2021-12-06 20:13:44,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:13:44,770 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 137 transitions. [2021-12-06 20:13:44,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) 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) [2021-12-06 20:13:44,770 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 137 transitions. [2021-12-06 20:13:44,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-06 20:13:44,771 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:13:44,771 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:13:44,779 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-12-06 20:13:44,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:13:44,972 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:13:44,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:13:44,974 INFO L85 PathProgramCache]: Analyzing trace with hash -309587570, now seen corresponding path program 1 times [2021-12-06 20:13:44,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:13:44,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [436464882] [2021-12-06 20:13:44,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:13:44,975 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:13:44,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:13:44,978 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:13:44,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-06 20:13:45,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:13:45,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 20:13:45,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:13:45,094 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 [2021-12-06 20:13:45,107 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 [2021-12-06 20:13:45,122 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 21 treesize of output 13 [2021-12-06 20:13:45,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:13:45,135 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:13:45,135 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:13:45,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [436464882] [2021-12-06 20:13:45,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [436464882] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:13:45,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:13:45,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 20:13:45,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858730474] [2021-12-06 20:13:45,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:13:45,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:13:45,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:13:45,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:13:45,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:13:45,137 INFO L87 Difference]: Start difference. First operand 126 states and 137 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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) [2021-12-06 20:13:45,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:13:45,555 INFO L93 Difference]: Finished difference Result 126 states and 137 transitions. [2021-12-06 20:13:45,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 20:13:45,555 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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 [2021-12-06 20:13:45,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:13:45,556 INFO L225 Difference]: With dead ends: 126 [2021-12-06 20:13:45,556 INFO L226 Difference]: Without dead ends: 126 [2021-12-06 20:13:45,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-06 20:13:45,557 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 45 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 20:13:45,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 251 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 20:13:45,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-12-06 20:13:45,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 125. [2021-12-06 20:13:45,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 91 states have (on average 1.4945054945054945) internal successors, (136), 124 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:45,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 136 transitions. [2021-12-06 20:13:45,560 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 136 transitions. Word has length 14 [2021-12-06 20:13:45,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:13:45,561 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 136 transitions. [2021-12-06 20:13:45,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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) [2021-12-06 20:13:45,561 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 136 transitions. [2021-12-06 20:13:45,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-06 20:13:45,561 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:13:45,561 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:13:45,568 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-12-06 20:13:45,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:13:45,763 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:13:45,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:13:45,764 INFO L85 PathProgramCache]: Analyzing trace with hash -309587569, now seen corresponding path program 1 times [2021-12-06 20:13:45,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:13:45,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1915906469] [2021-12-06 20:13:45,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:13:45,766 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:13:45,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:13:45,769 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:13:45,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-06 20:13:45,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:13:45,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 20:13:45,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:13:45,856 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 [2021-12-06 20:13:45,873 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 [2021-12-06 20:13:45,878 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 [2021-12-06 20:13:45,904 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 17 treesize of output 9 [2021-12-06 20:13:45,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 20:13:45,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:13:45,931 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:13:45,931 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:13:45,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1915906469] [2021-12-06 20:13:45,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1915906469] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:13:45,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:13:45,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 20:13:45,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271267166] [2021-12-06 20:13:45,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:13:45,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:13:45,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:13:45,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:13:45,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:13:45,932 INFO L87 Difference]: Start difference. First operand 125 states and 136 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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) [2021-12-06 20:13:46,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:13:46,367 INFO L93 Difference]: Finished difference Result 126 states and 138 transitions. [2021-12-06 20:13:46,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 20:13:46,368 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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 [2021-12-06 20:13:46,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:13:46,368 INFO L225 Difference]: With dead ends: 126 [2021-12-06 20:13:46,368 INFO L226 Difference]: Without dead ends: 126 [2021-12-06 20:13:46,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-12-06 20:13:46,369 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 16 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 20:13:46,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 294 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 20:13:46,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-12-06 20:13:46,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 120. [2021-12-06 20:13:46,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 91 states have (on average 1.4395604395604396) internal successors, (131), 119 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) [2021-12-06 20:13:46,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 131 transitions. [2021-12-06 20:13:46,372 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 131 transitions. Word has length 14 [2021-12-06 20:13:46,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:13:46,372 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 131 transitions. [2021-12-06 20:13:46,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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) [2021-12-06 20:13:46,372 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 131 transitions. [2021-12-06 20:13:46,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-06 20:13:46,373 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:13:46,373 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:13:46,380 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-12-06 20:13:46,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:13:46,575 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:13:46,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:13:46,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1562589153, now seen corresponding path program 1 times [2021-12-06 20:13:46,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:13:46,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1744129580] [2021-12-06 20:13:46,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:13:46,578 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:13:46,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:13:46,580 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:13:46,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-06 20:13:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:13:46,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 20:13:46,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:13:46,777 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 [2021-12-06 20:13:46,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 20:13:46,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:13:46,834 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:13:46,834 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:13:46,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1744129580] [2021-12-06 20:13:46,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1744129580] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:13:46,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:13:46,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 20:13:46,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639217741] [2021-12-06 20:13:46,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:13:46,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:13:46,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:13:46,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:13:46,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:13:46,835 INFO L87 Difference]: Start difference. First operand 120 states and 131 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:47,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:13:47,162 INFO L93 Difference]: Finished difference Result 180 states and 196 transitions. [2021-12-06 20:13:47,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 20:13:47,162 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-12-06 20:13:47,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:13:47,163 INFO L225 Difference]: With dead ends: 180 [2021-12-06 20:13:47,163 INFO L226 Difference]: Without dead ends: 180 [2021-12-06 20:13:47,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:13:47,164 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 144 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 20:13:47,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 268 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 20:13:47,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-12-06 20:13:47,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 126. [2021-12-06 20:13:47,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 97 states have (on average 1.422680412371134) internal successors, (138), 125 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:47,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 138 transitions. [2021-12-06 20:13:47,167 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 138 transitions. Word has length 15 [2021-12-06 20:13:47,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:13:47,167 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 138 transitions. [2021-12-06 20:13:47,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:47,167 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 138 transitions. [2021-12-06 20:13:47,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-06 20:13:47,168 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:13:47,168 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] [2021-12-06 20:13:47,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-12-06 20:13:47,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:13:47,370 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:13:47,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:13:47,371 INFO L85 PathProgramCache]: Analyzing trace with hash 2057287877, now seen corresponding path program 1 times [2021-12-06 20:13:47,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:13:47,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1526748563] [2021-12-06 20:13:47,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:13:47,372 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:13:47,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:13:47,374 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:13:47,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-06 20:13:47,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:13:47,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-06 20:13:47,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:13:47,605 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 [2021-12-06 20:13:47,610 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 [2021-12-06 20:13:47,641 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-12-06 20:13:47,641 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 21 treesize of output 20 [2021-12-06 20:13:47,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:13:47,648 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 21 treesize of output 20 [2021-12-06 20:13:47,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 20:13:47,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 20:13:47,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:13:47,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:13:47,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:13:47,906 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:13:47,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1526748563] [2021-12-06 20:13:47,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1526748563] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:13:47,906 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 20:13:47,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2021-12-06 20:13:47,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130383016] [2021-12-06 20:13:47,907 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 20:13:47,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 20:13:47,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:13:47,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 20:13:47,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-06 20:13:47,908 INFO L87 Difference]: Start difference. First operand 126 states and 138 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:48,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:13:48,520 INFO L93 Difference]: Finished difference Result 177 states and 193 transitions. [2021-12-06 20:13:48,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 20:13:48,521 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-06 20:13:48,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:13:48,522 INFO L225 Difference]: With dead ends: 177 [2021-12-06 20:13:48,523 INFO L226 Difference]: Without dead ends: 177 [2021-12-06 20:13:48,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-12-06 20:13:48,524 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 308 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 20:13:48,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 289 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 20:13:48,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-12-06 20:13:48,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 133. [2021-12-06 20:13:48,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 104 states have (on average 1.4038461538461537) internal successors, (146), 132 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:48,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 146 transitions. [2021-12-06 20:13:48,531 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 146 transitions. Word has length 22 [2021-12-06 20:13:48,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:13:48,532 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 146 transitions. [2021-12-06 20:13:48,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:48,532 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 146 transitions. [2021-12-06 20:13:48,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-06 20:13:48,533 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:13:48,533 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:13:48,540 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-12-06 20:13:48,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:13:48,734 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:13:48,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:13:48,735 INFO L85 PathProgramCache]: Analyzing trace with hash 2015269624, now seen corresponding path program 1 times [2021-12-06 20:13:48,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:13:48,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852769848] [2021-12-06 20:13:48,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:13:48,737 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:13:48,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:13:48,738 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:13:48,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-06 20:13:48,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:13:48,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 20:13:48,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:13:48,839 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 [2021-12-06 20:13:48,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 20:13:48,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:13:48,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:13:48,903 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:13:48,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [852769848] [2021-12-06 20:13:48,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [852769848] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:13:48,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:13:48,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 20:13:48,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95309589] [2021-12-06 20:13:48,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:13:48,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:13:48,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:13:48,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:13:48,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:13:48,904 INFO L87 Difference]: Start difference. First operand 133 states and 146 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:49,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:13:49,244 INFO L93 Difference]: Finished difference Result 157 states and 170 transitions. [2021-12-06 20:13:49,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 20:13:49,244 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-06 20:13:49,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:13:49,245 INFO L225 Difference]: With dead ends: 157 [2021-12-06 20:13:49,245 INFO L226 Difference]: Without dead ends: 157 [2021-12-06 20:13:49,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:13:49,245 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 112 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 20:13:49,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 272 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 20:13:49,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-12-06 20:13:49,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 133. [2021-12-06 20:13:49,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 104 states have (on average 1.3942307692307692) internal successors, (145), 132 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) [2021-12-06 20:13:49,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 145 transitions. [2021-12-06 20:13:49,248 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 145 transitions. Word has length 22 [2021-12-06 20:13:49,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:13:49,249 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 145 transitions. [2021-12-06 20:13:49,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:49,249 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 145 transitions. [2021-12-06 20:13:49,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-06 20:13:49,250 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:13:49,250 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:13:49,257 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-12-06 20:13:49,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:13:49,451 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:13:49,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:13:49,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1383851026, now seen corresponding path program 1 times [2021-12-06 20:13:49,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:13:49,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1821363400] [2021-12-06 20:13:49,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:13:49,454 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:13:49,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:13:49,457 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:13:49,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-06 20:13:49,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:13:49,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 20:13:49,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:13:49,597 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 [2021-12-06 20:13:49,606 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 [2021-12-06 20:13:49,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2021-12-06 20:13:49,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:13:49,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:13:49,630 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:13:49,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1821363400] [2021-12-06 20:13:49,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1821363400] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:13:49,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:13:49,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 20:13:49,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815306607] [2021-12-06 20:13:49,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:13:49,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:13:49,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:13:49,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:13:49,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:13:49,631 INFO L87 Difference]: Start difference. First operand 133 states and 145 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:50,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:13:50,000 INFO L93 Difference]: Finished difference Result 133 states and 145 transitions. [2021-12-06 20:13:50,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:13:50,001 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-06 20:13:50,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:13:50,001 INFO L225 Difference]: With dead ends: 133 [2021-12-06 20:13:50,001 INFO L226 Difference]: Without dead ends: 133 [2021-12-06 20:13:50,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-06 20:13:50,002 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 39 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 20:13:50,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 248 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 20:13:50,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-12-06 20:13:50,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 132. [2021-12-06 20:13:50,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 104 states have (on average 1.3846153846153846) internal successors, (144), 131 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) [2021-12-06 20:13:50,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 144 transitions. [2021-12-06 20:13:50,005 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 144 transitions. Word has length 22 [2021-12-06 20:13:50,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:13:50,005 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 144 transitions. [2021-12-06 20:13:50,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:50,005 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 144 transitions. [2021-12-06 20:13:50,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-06 20:13:50,006 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:13:50,006 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:13:50,013 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-12-06 20:13:50,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:13:50,207 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:13:50,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:13:50,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1383851027, now seen corresponding path program 1 times [2021-12-06 20:13:50,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:13:50,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1253848626] [2021-12-06 20:13:50,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:13:50,210 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:13:50,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:13:50,213 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:13:50,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-06 20:13:50,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:13:50,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 20:13:50,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:13:50,317 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 [2021-12-06 20:13:50,333 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 [2021-12-06 20:13:50,339 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 [2021-12-06 20:13:50,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 20:13:50,363 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 17 treesize of output 9 [2021-12-06 20:13:50,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:13:50,384 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:13:50,384 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:13:50,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1253848626] [2021-12-06 20:13:50,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1253848626] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:13:50,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:13:50,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 20:13:50,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278723831] [2021-12-06 20:13:50,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:13:50,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:13:50,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:13:50,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:13:50,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:13:50,385 INFO L87 Difference]: Start difference. First operand 132 states and 144 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:50,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:13:50,794 INFO L93 Difference]: Finished difference Result 130 states and 142 transitions. [2021-12-06 20:13:50,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:13:50,794 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-06 20:13:50,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:13:50,795 INFO L225 Difference]: With dead ends: 130 [2021-12-06 20:13:50,795 INFO L226 Difference]: Without dead ends: 130 [2021-12-06 20:13:50,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:13:50,796 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 8 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 20:13:50,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 301 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 20:13:50,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-12-06 20:13:50,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 124. [2021-12-06 20:13:50,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 100 states have (on average 1.35) internal successors, (135), 123 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:50,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 135 transitions. [2021-12-06 20:13:50,799 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 135 transitions. Word has length 22 [2021-12-06 20:13:50,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:13:50,799 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 135 transitions. [2021-12-06 20:13:50,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:50,799 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 135 transitions. [2021-12-06 20:13:50,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-06 20:13:50,800 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:13:50,800 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] [2021-12-06 20:13:50,809 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-12-06 20:13:51,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:13:51,001 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:13:51,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:13:51,002 INFO L85 PathProgramCache]: Analyzing trace with hash 99452763, now seen corresponding path program 1 times [2021-12-06 20:13:51,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:13:51,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1464306046] [2021-12-06 20:13:51,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:13:51,004 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:13:51,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:13:51,006 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:13:51,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-06 20:13:51,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:13:51,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-06 20:13:51,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:13:51,160 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 [2021-12-06 20:13:51,176 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 [2021-12-06 20:13:51,225 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 20:13:51,225 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 22 treesize of output 22 [2021-12-06 20:13:51,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:13:51,257 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 21 treesize of output 20 [2021-12-06 20:13:51,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 20:13:51,299 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 16 treesize of output 8 [2021-12-06 20:13:51,342 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 16 treesize of output 18 [2021-12-06 20:13:51,358 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 16 treesize of output 18 [2021-12-06 20:13:51,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 20:13:51,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:13:51,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:13:51,469 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_486 (Array (_ BitVec 32) (_ BitVec 32)))) (= ~unnamed1~0~BLACK (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_486) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|)))) is different from false [2021-12-06 20:13:51,485 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_486 (Array (_ BitVec 32) (_ BitVec 32)))) (= ~unnamed1~0~BLACK (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_486) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|)))) is different from false [2021-12-06 20:13:51,494 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_486 (Array (_ BitVec 32) (_ BitVec 32)))) (= ~unnamed1~0~BLACK (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_486) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|)))) is different from false [2021-12-06 20:13:51,511 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_486 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_484 (_ BitVec 32))) (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_484)) |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_486) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|)))) is different from false [2021-12-06 20:13:51,605 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_486 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_#t~malloc4#1.base_6| (_ BitVec 32)) (v_ArrVal_484 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc4#1.base_6|))))) (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset| v_ArrVal_484)) |v_ULTIMATE.start_main_#t~malloc4#1.base_6| v_ArrVal_486) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2021-12-06 20:13:51,629 INFO L354 Elim1Store]: treesize reduction 23, result has 45.2 percent of original size [2021-12-06 20:13:51,629 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 31 [2021-12-06 20:13:51,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2021-12-06 20:13:51,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-06 20:13:51,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:13:51,668 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:13:51,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1464306046] [2021-12-06 20:13:51,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1464306046] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:13:51,668 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 20:13:51,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-12-06 20:13:51,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138551921] [2021-12-06 20:13:51,668 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 20:13:51,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-06 20:13:51,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:13:51,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-06 20:13:51,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=187, Unknown=6, NotChecked=160, Total=420 [2021-12-06 20:13:51,669 INFO L87 Difference]: Start difference. First operand 124 states and 135 transitions. Second operand has 21 states, 21 states have (on average 1.9047619047619047) 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) [2021-12-06 20:13:52,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:13:52,533 INFO L93 Difference]: Finished difference Result 200 states and 217 transitions. [2021-12-06 20:13:52,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 20:13:52,534 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.9047619047619047) 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 23 [2021-12-06 20:13:52,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:13:52,535 INFO L225 Difference]: With dead ends: 200 [2021-12-06 20:13:52,535 INFO L226 Difference]: Without dead ends: 200 [2021-12-06 20:13:52,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 25 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=131, Invalid=345, Unknown=6, NotChecked=220, Total=702 [2021-12-06 20:13:52,537 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 186 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 666 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 20:13:52,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 480 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 439 Invalid, 0 Unknown, 666 Unchecked, 0.6s Time] [2021-12-06 20:13:52,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-12-06 20:13:52,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 137. [2021-12-06 20:13:52,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 113 states have (on average 1.3274336283185841) internal successors, (150), 136 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:52,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 150 transitions. [2021-12-06 20:13:52,544 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 150 transitions. Word has length 23 [2021-12-06 20:13:52,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:13:52,544 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 150 transitions. [2021-12-06 20:13:52,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.9047619047619047) 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) [2021-12-06 20:13:52,544 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 150 transitions. [2021-12-06 20:13:52,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-06 20:13:52,545 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:13:52,545 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] [2021-12-06 20:13:52,557 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-12-06 20:13:52,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:13:52,746 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:13:52,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:13:52,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1633911312, now seen corresponding path program 1 times [2021-12-06 20:13:52,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:13:52,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [390621119] [2021-12-06 20:13:52,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:13:52,750 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:13:52,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:13:52,752 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:13:52,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-06 20:13:52,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:13:52,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 20:13:52,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:13:52,866 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 [2021-12-06 20:13:52,905 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 19 treesize of output 7 [2021-12-06 20:13:52,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 20:13:52,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:13:52,913 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:13:52,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [390621119] [2021-12-06 20:13:52,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [390621119] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:13:52,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:13:52,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:13:52,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013107396] [2021-12-06 20:13:52,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:13:52,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:13:52,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:13:52,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:13:52,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:13:52,914 INFO L87 Difference]: Start difference. First operand 137 states and 150 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 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) [2021-12-06 20:13:53,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:13:53,065 INFO L93 Difference]: Finished difference Result 146 states and 159 transitions. [2021-12-06 20:13:53,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 20:13:53,066 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 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 [2021-12-06 20:13:53,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:13:53,067 INFO L225 Difference]: With dead ends: 146 [2021-12-06 20:13:53,067 INFO L226 Difference]: Without dead ends: 146 [2021-12-06 20:13:53,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:13:53,068 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 7 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:13:53,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 221 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:13:53,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-12-06 20:13:53,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 140. [2021-12-06 20:13:53,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 116 states have (on average 1.3189655172413792) internal successors, (153), 139 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:53,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 153 transitions. [2021-12-06 20:13:53,072 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 153 transitions. Word has length 28 [2021-12-06 20:13:53,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:13:53,072 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 153 transitions. [2021-12-06 20:13:53,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 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) [2021-12-06 20:13:53,072 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 153 transitions. [2021-12-06 20:13:53,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-06 20:13:53,073 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:13:53,073 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] [2021-12-06 20:13:53,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-12-06 20:13:53,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:13:53,275 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:13:53,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:13:53,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1612916602, now seen corresponding path program 1 times [2021-12-06 20:13:53,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:13:53,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [72231870] [2021-12-06 20:13:53,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:13:53,278 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:13:53,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:13:53,280 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:13:53,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-06 20:13:53,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:13:53,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 20:13:53,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:13:53,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 20:13:53,469 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:13:53,469 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:13:53,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [72231870] [2021-12-06 20:13:53,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [72231870] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:13:53,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:13:53,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 20:13:53,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929005333] [2021-12-06 20:13:53,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:13:53,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:13:53,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:13:53,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:13:53,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:13:53,471 INFO L87 Difference]: Start difference. First operand 140 states and 153 transitions. Second operand has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 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) [2021-12-06 20:13:53,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:13:53,532 INFO L93 Difference]: Finished difference Result 141 states and 153 transitions. [2021-12-06 20:13:53,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:13:53,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 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 [2021-12-06 20:13:53,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:13:53,534 INFO L225 Difference]: With dead ends: 141 [2021-12-06 20:13:53,534 INFO L226 Difference]: Without dead ends: 141 [2021-12-06 20:13:53,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:13:53,534 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 46 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:13:53,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 104 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:13:53,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-12-06 20:13:53,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2021-12-06 20:13:53,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 117 states have (on average 1.3076923076923077) internal successors, (153), 140 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:53,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 153 transitions. [2021-12-06 20:13:53,537 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 153 transitions. Word has length 28 [2021-12-06 20:13:53,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:13:53,537 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 153 transitions. [2021-12-06 20:13:53,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 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) [2021-12-06 20:13:53,537 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 153 transitions. [2021-12-06 20:13:53,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-06 20:13:53,538 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:13:53,538 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] [2021-12-06 20:13:53,545 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-12-06 20:13:53,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:13:53,739 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:13:53,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:13:53,739 INFO L85 PathProgramCache]: Analyzing trace with hash -556753399, now seen corresponding path program 1 times [2021-12-06 20:13:53,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:13:53,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1760634350] [2021-12-06 20:13:53,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:13:53,739 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:13:53,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:13:53,740 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:13:53,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-12-06 20:13:53,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:13:53,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-06 20:13:53,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:13:53,864 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 [2021-12-06 20:13:53,905 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-06 20:13:53,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 35 [2021-12-06 20:13:53,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 20:13:54,066 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 20:13:54,066 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 37 treesize of output 35 [2021-12-06 20:13:54,112 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 20:13:54,113 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 34 treesize of output 35 [2021-12-06 20:13:54,269 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 32 treesize of output 20 [2021-12-06 20:13:54,366 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:13:54,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:13:54,445 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_598 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_598) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))))))))))) is different from false [2021-12-06 20:13:54,494 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_598 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_598) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)))))))) (_ bv1 1)))) is different from false [2021-12-06 20:13:54,503 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:13:54,504 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2021-12-06 20:13:54,511 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:13:54,512 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 54 treesize of output 57 [2021-12-06 20:13:54,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2021-12-06 20:14:11,641 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:14:11,642 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:14:11,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1760634350] [2021-12-06 20:14:11,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1760634350] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:14:11,642 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 20:14:11,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-12-06 20:14:11,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003657131] [2021-12-06 20:14:11,642 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 20:14:11,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-06 20:14:11,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:14:11,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-06 20:14:11,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=296, Unknown=10, NotChecked=74, Total=462 [2021-12-06 20:14:11,643 INFO L87 Difference]: Start difference. First operand 141 states and 153 transitions. Second operand has 22 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:12,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:14:12,039 INFO L93 Difference]: Finished difference Result 156 states and 172 transitions. [2021-12-06 20:14:12,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 20:14:12,040 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-12-06 20:14:12,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:14:12,040 INFO L225 Difference]: With dead ends: 156 [2021-12-06 20:14:12,040 INFO L226 Difference]: Without dead ends: 156 [2021-12-06 20:14:12,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 2 IntricatePredicates, 2 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=106, Invalid=354, Unknown=10, NotChecked=82, Total=552 [2021-12-06 20:14:12,041 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 96 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 600 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 20:14:12,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 465 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 233 Invalid, 0 Unknown, 600 Unchecked, 0.3s Time] [2021-12-06 20:14:12,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-12-06 20:14:12,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 149. [2021-12-06 20:14:12,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 125 states have (on average 1.312) internal successors, (164), 148 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:12,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 164 transitions. [2021-12-06 20:14:12,046 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 164 transitions. Word has length 30 [2021-12-06 20:14:12,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:14:12,047 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 164 transitions. [2021-12-06 20:14:12,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:12,047 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 164 transitions. [2021-12-06 20:14:12,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-06 20:14:12,047 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:14:12,047 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] [2021-12-06 20:14:12,059 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-12-06 20:14:12,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:14:12,248 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:14:12,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:14:12,248 INFO L85 PathProgramCache]: Analyzing trace with hash -556753398, now seen corresponding path program 1 times [2021-12-06 20:14:12,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:14:12,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [817986744] [2021-12-06 20:14:12,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:14:12,249 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:14:12,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:14:12,249 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:14:12,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-12-06 20:14:12,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:14:12,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 27 conjunts are in the unsatisfiable core [2021-12-06 20:14:12,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:14:12,372 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 [2021-12-06 20:14:12,406 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 20:14:12,406 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 20 treesize of output 20 [2021-12-06 20:14:12,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 20:14:12,436 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 [2021-12-06 20:14:12,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 20:14:12,539 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 20:14:12,539 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 31 treesize of output 29 [2021-12-06 20:14:12,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:12,549 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 14 treesize of output 16 [2021-12-06 20:14:12,572 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 20:14:12,572 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 38 treesize of output 37 [2021-12-06 20:14:12,576 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 18 treesize of output 20 [2021-12-06 20:14:12,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-12-06 20:14:12,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 15 treesize of output 7 [2021-12-06 20:14:12,715 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:14:12,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:14:13,091 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_656 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_656) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_655 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_656 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_656) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_655) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2021-12-06 20:14:13,136 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_655 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_656 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_656) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_655) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)))) (forall ((v_ArrVal_656 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_656) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0))))) is different from false [2021-12-06 20:14:13,161 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_655 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_656 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_656) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_655) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))))) (forall ((v_ArrVal_656 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_656) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1))))) is different from false [2021-12-06 20:14:13,187 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:14:13,187 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 30 [2021-12-06 20:14:13,200 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:14:13,201 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 44 treesize of output 43 [2021-12-06 20:14:13,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-06 20:14:13,254 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:14:13,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 38 [2021-12-06 20:14:13,265 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:14:13,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2021-12-06 20:14:13,268 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:14:13,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2021-12-06 20:14:13,274 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:14:13,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-12-06 20:14:13,448 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:14:13,448 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:14:13,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [817986744] [2021-12-06 20:14:13,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [817986744] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:14:13,448 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 20:14:13,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-12-06 20:14:13,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794131990] [2021-12-06 20:14:13,448 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 20:14:13,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-06 20:14:13,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:14:13,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-06 20:14:13,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=260, Unknown=3, NotChecked=102, Total=420 [2021-12-06 20:14:13,449 INFO L87 Difference]: Start difference. First operand 149 states and 164 transitions. Second operand has 21 states, 20 states have (on average 2.65) internal successors, (53), 21 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:16,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:14:16,631 INFO L93 Difference]: Finished difference Result 214 states and 233 transitions. [2021-12-06 20:14:16,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 20:14:16,632 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.65) internal successors, (53), 21 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-12-06 20:14:16,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:14:16,633 INFO L225 Difference]: With dead ends: 214 [2021-12-06 20:14:16,633 INFO L226 Difference]: Without dead ends: 214 [2021-12-06 20:14:16,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 34 SyntacticMatches, 7 SemanticMatches, 30 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=162, Invalid=659, Unknown=3, NotChecked=168, Total=992 [2021-12-06 20:14:16,634 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 224 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 1522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 474 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-06 20:14:16,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 574 Invalid, 1522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1010 Invalid, 0 Unknown, 474 Unchecked, 2.3s Time] [2021-12-06 20:14:16,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-12-06 20:14:16,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 148. [2021-12-06 20:14:16,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 124 states have (on average 1.3064516129032258) internal successors, (162), 147 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:16,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 162 transitions. [2021-12-06 20:14:16,637 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 162 transitions. Word has length 30 [2021-12-06 20:14:16,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:14:16,637 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 162 transitions. [2021-12-06 20:14:16,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.65) internal successors, (53), 21 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:16,638 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 162 transitions. [2021-12-06 20:14:16,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-06 20:14:16,638 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:14:16,638 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] [2021-12-06 20:14:16,647 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-12-06 20:14:16,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:14:16,841 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:14:16,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:14:16,842 INFO L85 PathProgramCache]: Analyzing trace with hash -598771652, now seen corresponding path program 1 times [2021-12-06 20:14:16,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:14:16,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [41875095] [2021-12-06 20:14:16,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:14:16,844 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:14:16,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:14:16,846 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:14:16,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-12-06 20:14:16,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:14:16,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 20:14:16,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:14:16,972 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 19 treesize of output 7 [2021-12-06 20:14:16,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 20:14:16,982 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:14:16,982 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:14:16,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [41875095] [2021-12-06 20:14:16,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [41875095] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:14:16,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:14:16,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 20:14:16,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619786422] [2021-12-06 20:14:16,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:14:16,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 20:14:16,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:14:16,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 20:14:16,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:14:16,984 INFO L87 Difference]: Start difference. First operand 148 states and 162 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 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) [2021-12-06 20:14:17,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:14:17,234 INFO L93 Difference]: Finished difference Result 152 states and 165 transitions. [2021-12-06 20:14:17,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:14:17,235 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 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 [2021-12-06 20:14:17,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:14:17,235 INFO L225 Difference]: With dead ends: 152 [2021-12-06 20:14:17,236 INFO L226 Difference]: Without dead ends: 152 [2021-12-06 20:14:17,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:14:17,236 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 6 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:14:17,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 279 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 20:14:17,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-12-06 20:14:17,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 150. [2021-12-06 20:14:17,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 126 states have (on average 1.2936507936507937) 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) [2021-12-06 20:14:17,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 163 transitions. [2021-12-06 20:14:17,241 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 163 transitions. Word has length 30 [2021-12-06 20:14:17,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:14:17,241 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 163 transitions. [2021-12-06 20:14:17,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 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) [2021-12-06 20:14:17,241 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 163 transitions. [2021-12-06 20:14:17,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-06 20:14:17,241 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:14:17,242 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] [2021-12-06 20:14:17,249 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-12-06 20:14:17,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:14:17,443 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:14:17,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:14:17,444 INFO L85 PathProgramCache]: Analyzing trace with hash 51447198, now seen corresponding path program 1 times [2021-12-06 20:14:17,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:14:17,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [831930704] [2021-12-06 20:14:17,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:14:17,446 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:14:17,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:14:17,448 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:14:17,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-12-06 20:14:17,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:14:17,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 33 conjunts are in the unsatisfiable core [2021-12-06 20:14:17,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:14:17,630 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 [2021-12-06 20:14:17,642 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 [2021-12-06 20:14:17,686 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 20:14:17,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-12-06 20:14:17,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:17,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 20:14:17,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 20:14:17,757 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 16 treesize of output 8 [2021-12-06 20:14:17,809 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 16 treesize of output 18 [2021-12-06 20:14:17,830 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 16 treesize of output 18 [2021-12-06 20:14:17,841 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 20:14:17,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 24 [2021-12-06 20:14:17,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 20:14:17,876 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 16 treesize of output 18 [2021-12-06 20:14:17,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 16 treesize of output 8 [2021-12-06 20:14:17,962 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 16 treesize of output 18 [2021-12-06 20:14:17,971 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 16 treesize of output 18 [2021-12-06 20:14:18,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 20:14:18,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:14:18,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:14:18,109 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_786 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_786) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|)) ~unnamed1~0~BLACK)) is different from false [2021-12-06 20:14:18,118 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_786 (Array (_ BitVec 32) (_ BitVec 32)))) (= ~unnamed1~0~BLACK (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem8#1.base| v_ArrVal_786) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|)))) is different from false [2021-12-06 20:14:18,124 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_786 (Array (_ BitVec 32) (_ BitVec 32)))) (= ~unnamed1~0~BLACK (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_786) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|)))) is different from false [2021-12-06 20:14:18,135 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_783 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_786 (Array (_ BitVec 32) (_ BitVec 32)))) (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_783) |c_ULTIMATE.start_main_#t~malloc7#1.base| v_ArrVal_786) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|)))) is different from false [2021-12-06 20:14:18,150 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~malloc7#1.base_6| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc7#1.base_6|)))) (forall ((v_ArrVal_783 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_786 (Array (_ BitVec 32) (_ BitVec 32)))) (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_783) |v_ULTIMATE.start_main_#t~malloc7#1.base_6| v_ArrVal_786) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|)))))) is different from false [2021-12-06 20:14:18,165 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_783 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_786 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_#t~malloc7#1.base_6| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc7#1.base_6|)))) (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_783) |v_ULTIMATE.start_main_#t~malloc7#1.base_6| v_ArrVal_786) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2021-12-06 20:14:18,200 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_783 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_786 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_#t~malloc7#1.base_6| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc7#1.base_6|)))) (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_783) |v_ULTIMATE.start_main_#t~malloc7#1.base_6| v_ArrVal_786) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2021-12-06 20:14:18,219 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 20:14:18,219 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 17 treesize of output 16 [2021-12-06 20:14:18,232 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_783 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_786 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_#t~malloc7#1.base_6| (_ BitVec 32))) (or (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_783) |v_ULTIMATE.start_main_#t~malloc7#1.base_6| v_ArrVal_786) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (= |c_ULTIMATE.start_main_~end~0#1.base| |v_ULTIMATE.start_main_#t~malloc7#1.base_6|))) is different from false [2021-12-06 20:14:18,266 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_783 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_786 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_#t~malloc7#1.base_6| (_ BitVec 32)) (v_ArrVal_777 (_ BitVec 32))) (or (= |c_ULTIMATE.start_main_~end~0#1.base| |v_ULTIMATE.start_main_#t~malloc7#1.base_6|) (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_777)) |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_783) |v_ULTIMATE.start_main_#t~malloc7#1.base_6| v_ArrVal_786) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2021-12-06 20:14:18,324 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~malloc4#1.base_12| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc4#1.base_12|))) (forall ((v_ArrVal_783 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_786 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_#t~malloc7#1.base_6| (_ BitVec 32)) (v_ArrVal_777 (_ BitVec 32))) (or (= |c_ULTIMATE.start_main_~end~0#1.base| |v_ULTIMATE.start_main_#t~malloc7#1.base_6|) (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_777)) |v_ULTIMATE.start_main_#t~malloc4#1.base_12| v_ArrVal_783) |v_ULTIMATE.start_main_#t~malloc7#1.base_6| v_ArrVal_786) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))))) is different from false [2021-12-06 20:14:18,364 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_783 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_786 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_#t~malloc7#1.base_6| (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~malloc4#1.base_12| (_ BitVec 32)) (v_ArrVal_777 (_ BitVec 32))) (or (= |c_ULTIMATE.start_main_~list~0#1.base| |v_ULTIMATE.start_main_#t~malloc7#1.base_6|) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc4#1.base_12|))) (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset| v_ArrVal_777)) |v_ULTIMATE.start_main_#t~malloc4#1.base_12| v_ArrVal_783) |v_ULTIMATE.start_main_#t~malloc7#1.base_6| v_ArrVal_786) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2021-12-06 20:14:18,389 INFO L354 Elim1Store]: treesize reduction 23, result has 45.2 percent of original size [2021-12-06 20:14:18,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 34 [2021-12-06 20:14:18,393 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:14:18,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 36 treesize of output 24 [2021-12-06 20:14:18,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-06 20:14:18,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-12-06 20:14:18,419 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:14:18,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [831930704] [2021-12-06 20:14:18,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [831930704] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:14:18,419 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 20:14:18,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 30 [2021-12-06 20:14:18,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608595115] [2021-12-06 20:14:18,420 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 20:14:18,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-06 20:14:18,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:14:18,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-06 20:14:18,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=275, Unknown=11, NotChecked=484, Total=870 [2021-12-06 20:14:18,421 INFO L87 Difference]: Start difference. First operand 150 states and 163 transitions. Second operand has 30 states, 30 states have (on average 1.8) internal successors, (54), 30 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:27,443 WARN L227 SmtUtils]: Spent 8.73s on a formula simplification. DAG size of input: 45 DAG size of output: 34 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 20:14:28,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:14:28,619 INFO L93 Difference]: Finished difference Result 298 states and 322 transitions. [2021-12-06 20:14:28,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-06 20:14:28,619 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.8) internal successors, (54), 30 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-12-06 20:14:28,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:14:28,621 INFO L225 Difference]: With dead ends: 298 [2021-12-06 20:14:28,621 INFO L226 Difference]: Without dead ends: 298 [2021-12-06 20:14:28,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 29 SyntacticMatches, 9 SemanticMatches, 40 ConstructedPredicates, 11 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=229, Invalid=734, Unknown=11, NotChecked=748, Total=1722 [2021-12-06 20:14:28,622 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 307 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 2463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1728 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 20:14:28,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 604 Invalid, 2463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 658 Invalid, 0 Unknown, 1728 Unchecked, 0.9s Time] [2021-12-06 20:14:28,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-12-06 20:14:28,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 164. [2021-12-06 20:14:28,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 140 states have (on average 1.2714285714285714) internal successors, (178), 163 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:28,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 178 transitions. [2021-12-06 20:14:28,625 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 178 transitions. Word has length 30 [2021-12-06 20:14:28,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:14:28,626 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 178 transitions. [2021-12-06 20:14:28,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.8) internal successors, (54), 30 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:28,626 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 178 transitions. [2021-12-06 20:14:28,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-06 20:14:28,626 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:14:28,626 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] [2021-12-06 20:14:28,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-12-06 20:14:28,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:14:28,827 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:14:28,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:14:28,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1695861524, now seen corresponding path program 1 times [2021-12-06 20:14:28,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:14:28,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [860045492] [2021-12-06 20:14:28,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:14:28,830 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:14:28,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:14:28,832 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:14:28,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-12-06 20:14:28,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:14:28,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 20:14:28,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:14:29,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 20:14:29,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 20:14:29,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:14:29,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:14:29,271 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-12-06 20:14:29,271 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 19 treesize of output 19 [2021-12-06 20:14:29,277 INFO L354 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2021-12-06 20:14:29,277 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 20 treesize of output 12 [2021-12-06 20:14:29,324 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:14:29,324 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:14:29,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [860045492] [2021-12-06 20:14:29,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [860045492] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:14:29,324 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 20:14:29,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2021-12-06 20:14:29,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350836956] [2021-12-06 20:14:29,325 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 20:14:29,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 20:14:29,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:14:29,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 20:14:29,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-12-06 20:14:29,325 INFO L87 Difference]: Start difference. First operand 164 states and 178 transitions. Second operand has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:30,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:14:30,419 INFO L93 Difference]: Finished difference Result 213 states and 231 transitions. [2021-12-06 20:14:30,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 20:14:30,419 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 0 states have call successors, (0), 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 31 [2021-12-06 20:14:30,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:14:30,420 INFO L225 Difference]: With dead ends: 213 [2021-12-06 20:14:30,420 INFO L226 Difference]: Without dead ends: 213 [2021-12-06 20:14:30,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2021-12-06 20:14:30,421 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 317 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 20:14:30,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 387 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 20:14:30,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-12-06 20:14:30,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 176. [2021-12-06 20:14:30,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 152 states have (on average 1.263157894736842) internal successors, (192), 175 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:30,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 192 transitions. [2021-12-06 20:14:30,424 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 192 transitions. Word has length 31 [2021-12-06 20:14:30,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:14:30,425 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 192 transitions. [2021-12-06 20:14:30,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:30,425 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 192 transitions. [2021-12-06 20:14:30,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-06 20:14:30,425 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:14:30,425 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:14:30,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-12-06 20:14:30,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:14:30,626 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:14:30,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:14:30,626 INFO L85 PathProgramCache]: Analyzing trace with hash 668551831, now seen corresponding path program 2 times [2021-12-06 20:14:30,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:14:30,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1526649035] [2021-12-06 20:14:30,627 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 20:14:30,627 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:14:30,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:14:30,627 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:14:30,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-12-06 20:14:30,790 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 20:14:30,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:14:30,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 33 conjunts are in the unsatisfiable core [2021-12-06 20:14:30,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:14:30,807 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 [2021-12-06 20:14:30,822 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 [2021-12-06 20:14:30,865 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 20:14:30,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-12-06 20:14:30,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:14:30,901 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 21 treesize of output 20 [2021-12-06 20:14:30,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 20:14:30,938 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 16 treesize of output 8 [2021-12-06 20:14:30,991 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 16 treesize of output 18 [2021-12-06 20:14:31,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 20:14:31,028 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 20:14:31,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-12-06 20:14:31,060 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 16 treesize of output 18 [2021-12-06 20:14:31,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 20:14:31,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 16 treesize of output 8 [2021-12-06 20:14:31,155 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 16 treesize of output 18 [2021-12-06 20:14:31,170 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 16 treesize of output 18 [2021-12-06 20:14:31,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 20:14:31,241 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:14:31,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:14:31,316 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_897 (Array (_ BitVec 32) (_ BitVec 32)))) (= ~unnamed1~0~BLACK (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_897) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|)))) is different from false [2021-12-06 20:14:31,333 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_897 (Array (_ BitVec 32) (_ BitVec 32)))) (= ~unnamed1~0~BLACK (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_897) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|)))) is different from false [2021-12-06 20:14:31,344 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_897 (Array (_ BitVec 32) (_ BitVec 32)))) (= ~unnamed1~0~BLACK (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_897) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|)))) is different from false [2021-12-06 20:14:31,356 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_895 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_897 (Array (_ BitVec 32) (_ BitVec 32)))) (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_895) |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_897) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|)))) is different from false [2021-12-06 20:14:31,447 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_895 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_#t~malloc4#1.base_14| (_ BitVec 32)) (v_ArrVal_897 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc4#1.base_14|)))) (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_895) |v_ULTIMATE.start_main_#t~malloc4#1.base_14| v_ArrVal_897) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2021-12-06 20:14:31,483 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_895 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_#t~malloc4#1.base_14| (_ BitVec 32)) (v_ArrVal_897 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_895) |v_ULTIMATE.start_main_#t~malloc4#1.base_14| v_ArrVal_897) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc4#1.base_14|)))))) is different from false [2021-12-06 20:14:31,503 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 20:14:31,503 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 17 treesize of output 16 [2021-12-06 20:14:31,517 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_895 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_#t~malloc4#1.base_14| (_ BitVec 32)) (v_ArrVal_897 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= |c_ULTIMATE.start_main_~end~0#1.base| |v_ULTIMATE.start_main_#t~malloc4#1.base_14|) (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_895) |v_ULTIMATE.start_main_#t~malloc4#1.base_14| v_ArrVal_897) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2021-12-06 20:14:31,548 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_895 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_#t~malloc4#1.base_14| (_ BitVec 32)) (v_ArrVal_888 (_ BitVec 32)) (v_ArrVal_897 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= |c_ULTIMATE.start_main_~end~0#1.base| |v_ULTIMATE.start_main_#t~malloc4#1.base_14|) (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_888)) |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_895) |v_ULTIMATE.start_main_#t~malloc4#1.base_14| v_ArrVal_897) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2021-12-06 20:14:31,746 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~malloc4#1.base_16| (_ BitVec 32)) (v_ArrVal_895 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_#t~malloc4#1.base_14| (_ BitVec 32)) (v_ArrVal_888 (_ BitVec 32)) (v_ArrVal_897 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= |c_ULTIMATE.start_main_~list~0#1.base| |v_ULTIMATE.start_main_#t~malloc4#1.base_14|) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc4#1.base_16|)))) (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset| v_ArrVal_888)) |v_ULTIMATE.start_main_#t~malloc4#1.base_16| v_ArrVal_895) |v_ULTIMATE.start_main_#t~malloc4#1.base_14| v_ArrVal_897) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2021-12-06 20:14:31,772 INFO L354 Elim1Store]: treesize reduction 23, result has 45.2 percent of original size [2021-12-06 20:14:31,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 34 [2021-12-06 20:14:31,775 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:14:31,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 36 treesize of output 24 [2021-12-06 20:14:31,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-06 20:14:31,813 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2021-12-06 20:14:31,813 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:14:31,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1526649035] [2021-12-06 20:14:31,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1526649035] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:14:31,813 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 20:14:31,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 30 [2021-12-06 20:14:31,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787287334] [2021-12-06 20:14:31,814 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 20:14:31,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-06 20:14:31,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:14:31,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-06 20:14:31,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=335, Unknown=17, NotChecked=414, Total=870 [2021-12-06 20:14:31,815 INFO L87 Difference]: Start difference. First operand 176 states and 192 transitions. Second operand has 30 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 30 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:33,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:14:33,384 INFO L93 Difference]: Finished difference Result 347 states and 379 transitions. [2021-12-06 20:14:33,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 20:14:33,385 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 30 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-12-06 20:14:33,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:14:33,386 INFO L225 Difference]: With dead ends: 347 [2021-12-06 20:14:33,386 INFO L226 Difference]: Without dead ends: 347 [2021-12-06 20:14:33,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 31 SyntacticMatches, 7 SemanticMatches, 41 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=260, Invalid=881, Unknown=17, NotChecked=648, Total=1806 [2021-12-06 20:14:33,387 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 222 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 3039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2266 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:14:33,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 880 Invalid, 3039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 716 Invalid, 0 Unknown, 2266 Unchecked, 1.0s Time] [2021-12-06 20:14:33,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-12-06 20:14:33,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 183. [2021-12-06 20:14:33,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 159 states have (on average 1.2578616352201257) internal successors, (200), 182 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:33,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 200 transitions. [2021-12-06 20:14:33,390 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 200 transitions. Word has length 31 [2021-12-06 20:14:33,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:14:33,391 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 200 transitions. [2021-12-06 20:14:33,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 30 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:33,391 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 200 transitions. [2021-12-06 20:14:33,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-06 20:14:33,391 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:14:33,391 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] [2021-12-06 20:14:33,399 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-12-06 20:14:33,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:14:33,592 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:14:33,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:14:33,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1032099296, now seen corresponding path program 1 times [2021-12-06 20:14:33,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:14:33,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [388178752] [2021-12-06 20:14:33,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:14:33,595 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:14:33,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:14:33,598 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:14:33,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-12-06 20:14:33,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:14:33,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 20:14:33,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:14:33,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 20:14:33,747 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:14:33,747 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:14:33,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [388178752] [2021-12-06 20:14:33,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [388178752] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:14:33,747 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:14:33,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 20:14:33,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220556789] [2021-12-06 20:14:33,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:14:33,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:14:33,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:14:33,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:14:33,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:14:33,748 INFO L87 Difference]: Start difference. First operand 183 states and 200 transitions. Second operand has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:33,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:14:33,802 INFO L93 Difference]: Finished difference Result 182 states and 198 transitions. [2021-12-06 20:14:33,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:14:33,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2021-12-06 20:14:33,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:14:33,803 INFO L225 Difference]: With dead ends: 182 [2021-12-06 20:14:33,803 INFO L226 Difference]: Without dead ends: 182 [2021-12-06 20:14:33,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:14:33,803 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 64 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:14:33,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 71 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:14:33,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-12-06 20:14:33,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2021-12-06 20:14:33,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 159 states have (on average 1.2452830188679245) internal successors, (198), 181 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) [2021-12-06 20:14:33,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 198 transitions. [2021-12-06 20:14:33,806 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 198 transitions. Word has length 32 [2021-12-06 20:14:33,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:14:33,807 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 198 transitions. [2021-12-06 20:14:33,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:33,807 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 198 transitions. [2021-12-06 20:14:33,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-06 20:14:33,807 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:14:33,807 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] [2021-12-06 20:14:33,815 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-12-06 20:14:34,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:14:34,008 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:14:34,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:14:34,008 INFO L85 PathProgramCache]: Analyzing trace with hash -290013693, now seen corresponding path program 1 times [2021-12-06 20:14:34,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:14:34,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [963632446] [2021-12-06 20:14:34,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:14:34,008 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:14:34,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:14:34,009 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:14:34,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-12-06 20:14:34,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:14:34,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 20:14:34,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:14:43,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:14:43,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:15:01,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:15:01,450 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:15:01,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [963632446] [2021-12-06 20:15:01,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [963632446] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:15:01,451 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 20:15:01,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-12-06 20:15:01,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20668090] [2021-12-06 20:15:01,451 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 20:15:01,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 20:15:01,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:15:01,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 20:15:01,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=127, Unknown=13, NotChecked=0, Total=182 [2021-12-06 20:15:01,452 INFO L87 Difference]: Start difference. First operand 182 states and 198 transitions. Second operand has 14 states, 13 states have (on average 5.153846153846154) internal successors, (67), 14 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:15:01,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:15:01,725 INFO L93 Difference]: Finished difference Result 192 states and 207 transitions. [2021-12-06 20:15:01,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 20:15:01,726 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.153846153846154) internal successors, (67), 14 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-12-06 20:15:01,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:15:01,727 INFO L225 Difference]: With dead ends: 192 [2021-12-06 20:15:01,727 INFO L226 Difference]: Without dead ends: 167 [2021-12-06 20:15:01,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 26.8s TimeCoverageRelationStatistics Valid=42, Invalid=127, Unknown=13, NotChecked=0, Total=182 [2021-12-06 20:15:01,727 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 12 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 172 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 20:15:01,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 443 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 141 Invalid, 0 Unknown, 172 Unchecked, 0.3s Time] [2021-12-06 20:15:01,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-12-06 20:15:01,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2021-12-06 20:15:01,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 144 states have (on average 1.2638888888888888) internal successors, (182), 166 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:15:01,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 182 transitions. [2021-12-06 20:15:01,730 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 182 transitions. Word has length 34 [2021-12-06 20:15:01,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:15:01,730 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 182 transitions. [2021-12-06 20:15:01,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.153846153846154) internal successors, (67), 14 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:15:01,730 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 182 transitions. [2021-12-06 20:15:01,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-06 20:15:01,731 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:15:01,731 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 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] [2021-12-06 20:15:01,738 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2021-12-06 20:15:01,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:15:01,932 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-06 20:15:01,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:15:01,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1748016096, now seen corresponding path program 2 times [2021-12-06 20:15:01,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:15:01,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1597145155] [2021-12-06 20:15:01,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 20:15:01,935 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:15:01,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:15:01,937 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:15:01,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a800bd6-c448-4a77-87ec-1f1c67281149/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-12-06 20:15:02,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 20:15:02,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:15:02,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 34 conjunts are in the unsatisfiable core [2021-12-06 20:15:02,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:15:02,145 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 [2021-12-06 20:15:02,198 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 20:15:02,199 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 22 treesize of output 22 [2021-12-06 20:15:02,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 20:15:02,341 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-06 20:15:02,341 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 27 treesize of output 22 [2021-12-06 20:15:02,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:15:02,354 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 19 treesize of output 18 [2021-12-06 20:15:02,447 INFO L354 Elim1Store]: treesize reduction 92, result has 17.1 percent of original size [2021-12-06 20:15:02,447 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 89 treesize of output 70 [2021-12-06 20:15:02,462 INFO L354 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2021-12-06 20:15:02,463 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 4 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 52 [2021-12-06 20:15:02,863 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-12-06 20:15:02,863 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 69 treesize of output 36 [2021-12-06 20:15:02,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 10 [2021-12-06 20:15:02,941 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:15:02,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:15:32,583 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1017 (_ BitVec 32)) (v_ArrVal_1016 (_ BitVec 32)) (|ULTIMATE.start_main_~null~0#1.base| (_ BitVec 32))) (= (let ((.cse1 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_#t~mem5#1.offset|))) (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base|) |c_ULTIMATE.start_main_#t~mem5#1.offset| |c_ULTIMATE.start_main_~null~0#1.offset|) .cse1 v_ArrVal_1017)))) (select (select .cse0 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base|) |c_ULTIMATE.start_main_#t~mem5#1.offset| |ULTIMATE.start_main_~null~0#1.base|) .cse1 v_ArrVal_1016)) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)) (select (select .cse0 |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)))) |c_ULTIMATE.start_main_~null~0#1.offset|)) (forall ((v_ArrVal_1017 (_ BitVec 32)) (v_ArrVal_1016 (_ BitVec 32)) (|ULTIMATE.start_main_~null~0#1.base| (_ BitVec 32))) (= (let ((.cse3 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_#t~mem5#1.offset|))) (select (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base|) |c_ULTIMATE.start_main_#t~mem5#1.offset| |ULTIMATE.start_main_~null~0#1.base|) .cse3 v_ArrVal_1016)))) (select .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base|) |c_ULTIMATE.start_main_#t~mem5#1.offset| |c_ULTIMATE.start_main_~null~0#1.offset|) .cse3 v_ArrVal_1017)) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))) |ULTIMATE.start_main_~null~0#1.base|))) is different from false [2021-12-06 20:15:32,617 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:15:32,617 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 810 treesize of output 629 [2021-12-06 20:15:40,628 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:15:40,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 2809 treesize of output 1959