./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-manipulation/tree-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/heap-manipulation/tree-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3ab0e6b3adccdafccbf4f7749fddf566a909e7e6b26ed4ad49012db1c4c97a10 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/heap-manipulation/tree-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3ab0e6b3adccdafccbf4f7749fddf566a909e7e6b26ed4ad49012db1c4c97a10 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 00:05:01,443 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 00:05:01,446 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 00:05:01,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 00:05:01,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 00:05:01,504 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 00:05:01,507 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 00:05:01,512 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 00:05:01,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 00:05:01,520 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 00:05:01,521 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 00:05:01,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 00:05:01,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 00:05:01,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 00:05:01,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 00:05:01,531 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 00:05:01,532 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 00:05:01,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 00:05:01,537 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 00:05:01,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 00:05:01,547 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 00:05:01,548 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 00:05:01,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 00:05:01,551 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 00:05:01,554 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 00:05:01,555 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 00:05:01,555 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 00:05:01,556 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 00:05:01,557 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 00:05:01,558 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 00:05:01,558 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 00:05:01,559 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 00:05:01,560 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 00:05:01,561 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 00:05:01,562 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 00:05:01,562 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 00:05:01,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 00:05:01,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 00:05:01,564 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 00:05:01,564 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 00:05:01,565 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 00:05:01,566 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-29 00:05:01,589 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 00:05:01,589 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 00:05:01,590 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-29 00:05:01,590 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-29 00:05:01,591 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 00:05:01,591 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 00:05:01,591 INFO L138 SettingsManager]: * Use SBE=true [2021-10-29 00:05:01,592 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 00:05:01,592 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 00:05:01,592 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 00:05:01,592 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 00:05:01,593 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 00:05:01,593 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 00:05:01,593 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 00:05:01,593 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 00:05:01,593 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 00:05:01,594 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 00:05:01,594 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 00:05:01,594 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 00:05:01,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 00:05:01,595 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 00:05:01,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 00:05:01,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 00:05:01,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 00:05:01,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 00:05:01,596 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 00:05:01,596 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-29 00:05:01,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 00:05:01,596 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-29 00:05:01,597 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-29 00:05:01,597 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 00:05:01,597 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 00:05:01,597 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_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ab0e6b3adccdafccbf4f7749fddf566a909e7e6b26ed4ad49012db1c4c97a10 [2021-10-29 00:05:01,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 00:05:01,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 00:05:01,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 00:05:01,906 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 00:05:01,907 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 00:05:01,908 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/heap-manipulation/tree-3.i [2021-10-29 00:05:01,980 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/data/da320a273/feda499e24c64260bcd8146a713310be/FLAGd3c847eae [2021-10-29 00:05:02,616 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 00:05:02,617 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/sv-benchmarks/c/heap-manipulation/tree-3.i [2021-10-29 00:05:02,644 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/data/da320a273/feda499e24c64260bcd8146a713310be/FLAGd3c847eae [2021-10-29 00:05:02,865 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/data/da320a273/feda499e24c64260bcd8146a713310be [2021-10-29 00:05:02,868 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 00:05:02,870 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 00:05:02,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 00:05:02,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 00:05:02,876 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 00:05:02,877 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:05:02" (1/1) ... [2021-10-29 00:05:02,878 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d73ab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:02, skipping insertion in model container [2021-10-29 00:05:02,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:05:02" (1/1) ... [2021-10-29 00:05:02,898 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 00:05:02,957 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 00:05:03,275 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/sv-benchmarks/c/heap-manipulation/tree-3.i[22626,22639] [2021-10-29 00:05:03,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 00:05:03,322 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 00:05:03,355 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/sv-benchmarks/c/heap-manipulation/tree-3.i[22626,22639] [2021-10-29 00:05:03,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 00:05:03,409 INFO L208 MainTranslator]: Completed translation [2021-10-29 00:05:03,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:03 WrapperNode [2021-10-29 00:05:03,410 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 00:05:03,411 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 00:05:03,411 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 00:05:03,411 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 00:05:03,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:03" (1/1) ... [2021-10-29 00:05:03,436 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:03" (1/1) ... [2021-10-29 00:05:03,467 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 00:05:03,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 00:05:03,468 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 00:05:03,468 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 00:05:03,476 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:03" (1/1) ... [2021-10-29 00:05:03,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:03" (1/1) ... [2021-10-29 00:05:03,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:03" (1/1) ... [2021-10-29 00:05:03,481 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:03" (1/1) ... [2021-10-29 00:05:03,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:03" (1/1) ... [2021-10-29 00:05:03,498 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:03" (1/1) ... [2021-10-29 00:05:03,500 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:03" (1/1) ... [2021-10-29 00:05:03,503 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 00:05:03,504 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 00:05:03,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 00:05:03,505 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 00:05:03,506 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:03" (1/1) ... [2021-10-29 00:05:03,514 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 00:05:03,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:03,554 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:03,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 00:05:03,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-29 00:05:03,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-29 00:05:03,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-29 00:05:03,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-29 00:05:03,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 00:05:03,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-29 00:05:03,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 00:05:03,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 00:05:03,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 00:05:03,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 00:05:04,087 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 00:05:04,088 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2021-10-29 00:05:04,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:05:04 BoogieIcfgContainer [2021-10-29 00:05:04,092 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 00:05:04,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 00:05:04,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 00:05:04,099 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 00:05:04,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:05:02" (1/3) ... [2021-10-29 00:05:04,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce6bc0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:05:04, skipping insertion in model container [2021-10-29 00:05:04,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:03" (2/3) ... [2021-10-29 00:05:04,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce6bc0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:05:04, skipping insertion in model container [2021-10-29 00:05:04,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:05:04" (3/3) ... [2021-10-29 00:05:04,104 INFO L111 eAbstractionObserver]: Analyzing ICFG tree-3.i [2021-10-29 00:05:04,110 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 00:05:04,110 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-29 00:05:04,178 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 00:05:04,190 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 [2021-10-29 00:05:04,191 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-29 00:05:04,210 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 43 states have (on average 1.744186046511628) internal successors, (75), 46 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:04,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 00:05:04,216 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:04,217 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:04,217 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 00:05:04,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:04,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1437310363, now seen corresponding path program 1 times [2021-10-29 00:05:04,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:04,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903818469] [2021-10-29 00:05:04,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:04,234 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:04,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:04,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:04,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:04,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903818469] [2021-10-29 00:05:04,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903818469] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 00:05:04,472 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:05:04,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 00:05:04,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296971355] [2021-10-29 00:05:04,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 00:05:04,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:04,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 00:05:04,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 00:05:04,513 INFO L87 Difference]: Start difference. First operand has 47 states, 43 states have (on average 1.744186046511628) internal successors, (75), 46 states have internal predecessors, (75), 0 states have call successors, (0), 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 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2021-10-29 00:05:04,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:04,542 INFO L93 Difference]: Finished difference Result 92 states and 148 transitions. [2021-10-29 00:05:04,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 00:05:04,544 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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 [2021-10-29 00:05:04,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:05:04,554 INFO L225 Difference]: With dead ends: 92 [2021-10-29 00:05:04,554 INFO L226 Difference]: Without dead ends: 34 [2021-10-29 00:05:04,558 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 00:05:04,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-29 00:05:04,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-29 00:05:04,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 33 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) [2021-10-29 00:05:04,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2021-10-29 00:05:04,602 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 10 [2021-10-29 00:05:04,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:05:04,603 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2021-10-29 00:05:04,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2021-10-29 00:05:04,604 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2021-10-29 00:05:04,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-29 00:05:04,605 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:04,605 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:04,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 00:05:04,606 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 00:05:04,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:04,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1902394293, now seen corresponding path program 1 times [2021-10-29 00:05:04,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:04,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471869447] [2021-10-29 00:05:04,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:04,611 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:04,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:04,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:04,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:04,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471869447] [2021-10-29 00:05:04,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471869447] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 00:05:04,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:05:04,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 00:05:04,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135437853] [2021-10-29 00:05:04,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 00:05:04,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:04,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 00:05:04,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 00:05:04,726 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:04,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:04,823 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2021-10-29 00:05:04,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 00:05:04,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-29 00:05:04,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:05:04,826 INFO L225 Difference]: With dead ends: 61 [2021-10-29 00:05:04,826 INFO L226 Difference]: Without dead ends: 38 [2021-10-29 00:05:04,828 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 00:05:04,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-29 00:05:04,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-10-29 00:05:04,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 37 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:04,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2021-10-29 00:05:04,835 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 11 [2021-10-29 00:05:04,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:05:04,836 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2021-10-29 00:05:04,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:04,837 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2021-10-29 00:05:04,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-29 00:05:04,838 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:04,838 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:04,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 00:05:04,843 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 00:05:04,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:04,844 INFO L85 PathProgramCache]: Analyzing trace with hash -617565641, now seen corresponding path program 1 times [2021-10-29 00:05:04,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:04,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626179031] [2021-10-29 00:05:04,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:04,846 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:04,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:04,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:04,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626179031] [2021-10-29 00:05:04,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626179031] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 00:05:04,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:05:04,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-29 00:05:04,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846181935] [2021-10-29 00:05:04,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 00:05:04,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:04,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 00:05:04,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 00:05:04,958 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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) [2021-10-29 00:05:05,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:05,016 INFO L93 Difference]: Finished difference Result 81 states and 96 transitions. [2021-10-29 00:05:05,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 00:05:05,017 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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 [2021-10-29 00:05:05,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:05:05,018 INFO L225 Difference]: With dead ends: 81 [2021-10-29 00:05:05,018 INFO L226 Difference]: Without dead ends: 43 [2021-10-29 00:05:05,019 INFO L786 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 [2021-10-29 00:05:05,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-29 00:05:05,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2021-10-29 00:05:05,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 39 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:05,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2021-10-29 00:05:05,025 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 11 [2021-10-29 00:05:05,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:05:05,026 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2021-10-29 00:05:05,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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) [2021-10-29 00:05:05,026 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2021-10-29 00:05:05,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-29 00:05:05,027 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:05,027 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:05,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-29 00:05:05,028 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 00:05:05,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:05,028 INFO L85 PathProgramCache]: Analyzing trace with hash -199489304, now seen corresponding path program 1 times [2021-10-29 00:05:05,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:05,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730429747] [2021-10-29 00:05:05,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:05,030 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:05,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:05,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:05,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:05,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730429747] [2021-10-29 00:05:05,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730429747] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 00:05:05,080 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:05:05,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 00:05:05,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275583627] [2021-10-29 00:05:05,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 00:05:05,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:05,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 00:05:05,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 00:05:05,083 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:05,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:05,137 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2021-10-29 00:05:05,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 00:05:05,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2021-10-29 00:05:05,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:05:05,139 INFO L225 Difference]: With dead ends: 63 [2021-10-29 00:05:05,139 INFO L226 Difference]: Without dead ends: 42 [2021-10-29 00:05:05,140 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 00:05:05,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-29 00:05:05,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2021-10-29 00:05:05,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 39 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:05,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2021-10-29 00:05:05,146 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 19 [2021-10-29 00:05:05,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:05:05,147 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2021-10-29 00:05:05,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:05,147 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2021-10-29 00:05:05,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-29 00:05:05,148 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:05,148 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:05,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-29 00:05:05,149 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 00:05:05,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:05,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1552949996, now seen corresponding path program 1 times [2021-10-29 00:05:05,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:05,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308934248] [2021-10-29 00:05:05,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:05,150 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:05,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:05,244 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-29 00:05:05,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:05,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308934248] [2021-10-29 00:05:05,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308934248] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 00:05:05,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:05:05,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-29 00:05:05,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007656965] [2021-10-29 00:05:05,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 00:05:05,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:05,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 00:05:05,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-29 00:05:05,248 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 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) [2021-10-29 00:05:05,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:05,440 INFO L93 Difference]: Finished difference Result 89 states and 102 transitions. [2021-10-29 00:05:05,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 00:05:05,441 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 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 [2021-10-29 00:05:05,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:05:05,442 INFO L225 Difference]: With dead ends: 89 [2021-10-29 00:05:05,442 INFO L226 Difference]: Without dead ends: 56 [2021-10-29 00:05:05,443 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-29 00:05:05,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-29 00:05:05,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 38. [2021-10-29 00:05:05,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 37 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) [2021-10-29 00:05:05,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2021-10-29 00:05:05,449 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 22 [2021-10-29 00:05:05,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:05:05,449 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2021-10-29 00:05:05,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 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) [2021-10-29 00:05:05,450 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2021-10-29 00:05:05,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-29 00:05:05,451 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:05,451 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:05,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-29 00:05:05,452 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 00:05:05,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:05,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1147750160, now seen corresponding path program 1 times [2021-10-29 00:05:05,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:05,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246773248] [2021-10-29 00:05:05,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:05,453 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:05,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:05,970 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:05,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:05,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246773248] [2021-10-29 00:05:05,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246773248] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:05,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308051902] [2021-10-29 00:05:05,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:05,972 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:05,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:05,977 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:05,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 00:05:06,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:06,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-29 00:05:06,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:06,146 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 [2021-10-29 00:05:06,339 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 22 treesize of output 18 [2021-10-29 00:05:06,355 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-10-29 00:05:06,360 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 15 treesize of output 15 [2021-10-29 00:05:06,376 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 [2021-10-29 00:05:07,756 INFO L354 Elim1Store]: treesize reduction 1382, result has 6.8 percent of original size [2021-10-29 00:05:07,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 9 new quantified variables, introduced 12 case distinctions, treesize of input 6518 treesize of output 3896 [2021-10-29 00:05:09,424 INFO L354 Elim1Store]: treesize reduction 2692, result has 12.9 percent of original size [2021-10-29 00:05:09,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 16 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 20 new quantified variables, introduced 44 case distinctions, treesize of input 11861 treesize of output 7816 [2021-10-29 00:05:10,280 INFO L354 Elim1Store]: treesize reduction 292, result has 14.4 percent of original size [2021-10-29 00:05:10,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 9059 treesize of output 6351 [2021-10-29 00:05:11,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:11,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:11,099 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:05:11,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 25 [2021-10-29 00:05:11,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:11,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:11,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:11,365 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:05:11,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 31 [2021-10-29 00:05:11,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:11,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:11,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:11,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 31 [2021-10-29 00:05:11,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:11,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:11,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:11,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 25 [2021-10-29 00:05:13,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:13,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:13,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 25 [2021-10-29 00:05:13,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:13,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:13,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:13,644 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:05:13,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 21 [2021-10-29 00:05:13,677 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 00:05:13,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:13,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:13,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:13,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:13,695 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:05:13,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 68 [2021-10-29 00:05:13,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:13,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:13,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:13,776 INFO L354 Elim1Store]: treesize reduction 94, result has 3.1 percent of original size [2021-10-29 00:05:13,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 2346 treesize of output 1864 [2021-10-29 00:05:14,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:14,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:14,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:14,360 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:05:14,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 27 [2021-10-29 00:05:14,472 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 00:05:14,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:14,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:14,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:14,525 INFO L354 Elim1Store]: treesize reduction 170, result has 27.0 percent of original size [2021-10-29 00:05:14,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 339 treesize of output 277 [2021-10-29 00:05:14,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:14,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:14,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:14,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:14,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:14,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:14,667 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:05:14,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 202 treesize of output 177 [2021-10-29 00:05:14,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:14,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:14,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:14,759 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:05:14,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 164 treesize of output 74 [2021-10-29 00:05:14,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:14,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:14,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:14,814 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-29 00:05:14,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 466 treesize of output 321 [2021-10-29 00:05:14,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:14,839 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:05:14,839 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 400 treesize of output 378 [2021-10-29 00:05:14,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:14,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:14,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:14,975 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:05:14,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 21 [2021-10-29 00:05:15,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:15,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:15,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:15,009 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:05:15,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 96 treesize of output 42 [2021-10-29 00:05:15,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:15,032 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:05:15,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 21 [2021-10-29 00:05:15,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:15,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:15,056 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:05:15,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 45 treesize of output 21 [2021-10-29 00:05:15,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:15,075 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:05:15,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 21 [2021-10-29 00:05:15,094 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-10-29 00:05:15,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 313 treesize of output 216 [2021-10-29 00:05:15,110 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:05:15,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 179 treesize of output 155 [2021-10-29 00:05:15,121 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:05:15,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 135 treesize of output 111 [2021-10-29 00:05:15,131 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:05:15,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 99 treesize of output 79 [2021-10-29 00:05:15,746 INFO L354 Elim1Store]: treesize reduction 54, result has 1.8 percent of original size [2021-10-29 00:05:15,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 122 treesize of output 71 [2021-10-29 00:05:15,760 INFO L354 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2021-10-29 00:05:15,760 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 59 treesize of output 48 [2021-10-29 00:05:15,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:15,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308051902] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:15,770 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 00:05:15,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-10-29 00:05:15,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719040085] [2021-10-29 00:05:15,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-29 00:05:15,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:15,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-29 00:05:15,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-10-29 00:05:15,772 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:16,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:16,481 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2021-10-29 00:05:16,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-29 00:05:16,482 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-29 00:05:16,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:05:16,483 INFO L225 Difference]: With dead ends: 72 [2021-10-29 00:05:16,483 INFO L226 Difference]: Without dead ends: 70 [2021-10-29 00:05:16,484 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2021-10-29 00:05:16,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-29 00:05:16,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 50. [2021-10-29 00:05:16,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 49 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) [2021-10-29 00:05:16,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2021-10-29 00:05:16,492 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 27 [2021-10-29 00:05:16,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:05:16,493 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2021-10-29 00:05:16,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:16,494 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2021-10-29 00:05:16,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-29 00:05:16,495 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:16,495 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:16,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:16,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-29 00:05:16,717 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 00:05:16,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:16,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1147042128, now seen corresponding path program 1 times [2021-10-29 00:05:16,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:16,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726956468] [2021-10-29 00:05:16,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:16,718 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:16,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:16,979 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:16,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:16,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726956468] [2021-10-29 00:05:16,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726956468] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:16,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962281382] [2021-10-29 00:05:16,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:16,980 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:16,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:16,984 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:17,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-29 00:05:17,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:17,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-29 00:05:17,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:17,132 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 [2021-10-29 00:05:17,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-10-29 00:05:17,321 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-10-29 00:05:17,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23 [2021-10-29 00:05:17,914 INFO L354 Elim1Store]: treesize reduction 1366, result has 7.9 percent of original size [2021-10-29 00:05:17,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 9 new quantified variables, introduced 12 case distinctions, treesize of input 2349 treesize of output 827 [2021-10-29 00:05:17,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:17,964 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 2247 treesize of output 1799 [2021-10-29 00:05:18,039 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 1563 treesize of output 1559 [2021-10-29 00:05:18,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:18,267 INFO L354 Elim1Store]: treesize reduction 5, result has 84.8 percent of original size [2021-10-29 00:05:18,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 129 treesize of output 120 [2021-10-29 00:05:18,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:18,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:18,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:18,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 86 [2021-10-29 00:05:18,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:18,691 INFO L354 Elim1Store]: treesize reduction 20, result has 71.0 percent of original size [2021-10-29 00:05:18,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 274 treesize of output 282 [2021-10-29 00:05:19,211 INFO L354 Elim1Store]: treesize reduction 176, result has 20.4 percent of original size [2021-10-29 00:05:19,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 112 treesize of output 103 [2021-10-29 00:05:19,228 INFO L354 Elim1Store]: treesize reduction 80, result has 1.2 percent of original size [2021-10-29 00:05:19,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 116 treesize of output 71 [2021-10-29 00:05:20,399 INFO L354 Elim1Store]: treesize reduction 52, result has 28.8 percent of original size [2021-10-29 00:05:20,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 73 treesize of output 56 [2021-10-29 00:05:20,450 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:20,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962281382] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:20,450 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 00:05:20,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-10-29 00:05:20,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570180484] [2021-10-29 00:05:20,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-29 00:05:20,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:20,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-29 00:05:20,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-10-29 00:05:20,453 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:21,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:21,089 INFO L93 Difference]: Finished difference Result 85 states and 93 transitions. [2021-10-29 00:05:21,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-29 00:05:21,090 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-29 00:05:21,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:05:21,091 INFO L225 Difference]: With dead ends: 85 [2021-10-29 00:05:21,091 INFO L226 Difference]: Without dead ends: 72 [2021-10-29 00:05:21,096 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2021-10-29 00:05:21,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-29 00:05:21,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 50. [2021-10-29 00:05:21,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 49 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:21,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2021-10-29 00:05:21,110 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 27 [2021-10-29 00:05:21,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:05:21,110 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2021-10-29 00:05:21,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:21,110 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2021-10-29 00:05:21,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-29 00:05:21,111 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:21,112 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:21,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:21,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:21,328 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 00:05:21,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:21,328 INFO L85 PathProgramCache]: Analyzing trace with hash -384468434, now seen corresponding path program 1 times [2021-10-29 00:05:21,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:21,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051620029] [2021-10-29 00:05:21,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:21,329 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:21,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:21,590 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:21,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:21,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051620029] [2021-10-29 00:05:21,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051620029] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:21,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449524538] [2021-10-29 00:05:21,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:21,591 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:21,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:21,594 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:21,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-29 00:05:21,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:21,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-29 00:05:21,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:21,756 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 [2021-10-29 00:05:21,803 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 [2021-10-29 00:05:21,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:21,861 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 29 treesize of output 13 [2021-10-29 00:05:21,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:21,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-10-29 00:05:21,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-10-29 00:05:21,905 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-10-29 00:05:21,905 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 15 treesize of output 15 [2021-10-29 00:05:22,623 INFO L354 Elim1Store]: treesize reduction 1366, result has 7.9 percent of original size [2021-10-29 00:05:22,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 9 new quantified variables, introduced 12 case distinctions, treesize of input 4488 treesize of output 2450 [2021-10-29 00:05:22,671 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 6900 treesize of output 5924 [2021-10-29 00:05:22,775 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Some non-self update cases but no top-level DER relation [2021-10-29 00:05:22,776 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-29 00:05:22,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-29 00:05:22,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951918701] [2021-10-29 00:05:22,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-29 00:05:22,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:22,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-29 00:05:22,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-29 00:05:22,778 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 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) [2021-10-29 00:05:22,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 00:05:22,817 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-10-29 00:05:22,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:22,992 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@61d74faa at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:356) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:204) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.checkInternal(ProtectiveHoareTripleChecker.java:61) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.checkInternal(EfficientHoareTripleChecker.java:63) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:97) 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:869) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:783) 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) [2021-10-29 00:05:22,997 INFO L168 Benchmark]: Toolchain (without parser) took 20126.73 ms. Allocated memory was 96.5 MB in the beginning and 226.5 MB in the end (delta: 130.0 MB). Free memory was 53.9 MB in the beginning and 166.3 MB in the end (delta: -112.4 MB). Peak memory consumption was 17.3 MB. Max. memory is 16.1 GB. [2021-10-29 00:05:22,998 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 96.5 MB. Free memory is still 71.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 00:05:22,998 INFO L168 Benchmark]: CACSL2BoogieTranslator took 538.75 ms. Allocated memory is still 96.5 MB. Free memory was 53.7 MB in the beginning and 62.1 MB in the end (delta: -8.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. [2021-10-29 00:05:22,999 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.16 ms. Allocated memory is still 96.5 MB. Free memory was 62.1 MB in the beginning and 60.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 00:05:22,999 INFO L168 Benchmark]: Boogie Preprocessor took 36.26 ms. Allocated memory is still 96.5 MB. Free memory was 60.0 MB in the beginning and 57.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 00:05:22,999 INFO L168 Benchmark]: RCFGBuilder took 587.83 ms. Allocated memory is still 96.5 MB. Free memory was 57.9 MB in the beginning and 41.4 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-29 00:05:23,000 INFO L168 Benchmark]: TraceAbstraction took 18901.95 ms. Allocated memory was 96.5 MB in the beginning and 226.5 MB in the end (delta: 130.0 MB). Free memory was 40.9 MB in the beginning and 166.3 MB in the end (delta: -125.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 00:05:23,002 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 96.5 MB. Free memory is still 71.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 538.75 ms. Allocated memory is still 96.5 MB. Free memory was 53.7 MB in the beginning and 62.1 MB in the end (delta: -8.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.16 ms. Allocated memory is still 96.5 MB. Free memory was 62.1 MB in the beginning and 60.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.26 ms. Allocated memory is still 96.5 MB. Free memory was 60.0 MB in the beginning and 57.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 587.83 ms. Allocated memory is still 96.5 MB. Free memory was 57.9 MB in the beginning and 41.4 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 18901.95 ms. Allocated memory was 96.5 MB in the beginning and 226.5 MB in the end (delta: 130.0 MB). Free memory was 40.9 MB in the beginning and 166.3 MB in the end (delta: -125.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@61d74faa de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@61d74faa: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-29 00:05:23,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 00:05:25,447 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 00:05:25,451 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 00:05:25,522 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 00:05:25,523 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 00:05:25,526 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 00:05:25,528 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 00:05:25,534 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 00:05:25,538 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 00:05:25,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 00:05:25,545 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 00:05:25,546 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 00:05:25,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 00:05:25,549 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 00:05:25,551 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 00:05:25,556 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 00:05:25,557 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 00:05:25,558 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 00:05:25,560 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 00:05:25,568 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 00:05:25,570 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 00:05:25,571 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 00:05:25,573 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 00:05:25,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 00:05:25,577 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 00:05:25,577 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 00:05:25,578 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 00:05:25,579 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 00:05:25,579 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 00:05:25,580 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 00:05:25,581 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 00:05:25,582 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 00:05:25,583 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 00:05:25,583 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 00:05:25,585 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 00:05:25,585 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 00:05:25,586 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 00:05:25,586 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 00:05:25,587 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 00:05:25,588 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 00:05:25,589 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 00:05:25,590 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-29 00:05:25,614 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 00:05:25,615 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 00:05:25,615 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-29 00:05:25,615 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-29 00:05:25,616 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 00:05:25,617 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 00:05:25,617 INFO L138 SettingsManager]: * Use SBE=true [2021-10-29 00:05:25,617 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 00:05:25,617 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 00:05:25,618 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 00:05:25,618 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 00:05:25,618 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 00:05:25,618 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 00:05:25,618 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 00:05:25,619 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 00:05:25,619 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 00:05:25,619 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 00:05:25,619 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 00:05:25,619 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 00:05:25,620 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 00:05:25,620 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 00:05:25,620 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 00:05:25,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 00:05:25,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 00:05:25,621 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 00:05:25,621 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 00:05:25,621 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 00:05:25,622 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-29 00:05:25,622 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 00:05:25,622 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-29 00:05:25,622 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-29 00:05:25,622 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 00:05:25,623 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 00:05:25,623 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 00:05:25,623 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_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ab0e6b3adccdafccbf4f7749fddf566a909e7e6b26ed4ad49012db1c4c97a10 [2021-10-29 00:05:26,003 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 00:05:26,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 00:05:26,039 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 00:05:26,041 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 00:05:26,042 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 00:05:26,043 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/heap-manipulation/tree-3.i [2021-10-29 00:05:26,119 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/data/8bcdccbde/5c1567aa83a14d3b99f869bffaf1346d/FLAG70655560b [2021-10-29 00:05:26,842 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 00:05:26,846 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/sv-benchmarks/c/heap-manipulation/tree-3.i [2021-10-29 00:05:26,877 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/data/8bcdccbde/5c1567aa83a14d3b99f869bffaf1346d/FLAG70655560b [2021-10-29 00:05:27,091 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/data/8bcdccbde/5c1567aa83a14d3b99f869bffaf1346d [2021-10-29 00:05:27,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 00:05:27,102 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 00:05:27,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 00:05:27,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 00:05:27,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 00:05:27,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:05:27" (1/1) ... [2021-10-29 00:05:27,111 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54466ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:27, skipping insertion in model container [2021-10-29 00:05:27,111 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:05:27" (1/1) ... [2021-10-29 00:05:27,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 00:05:27,156 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 00:05:27,480 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/sv-benchmarks/c/heap-manipulation/tree-3.i[22626,22639] [2021-10-29 00:05:27,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 00:05:27,518 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 00:05:27,567 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/sv-benchmarks/c/heap-manipulation/tree-3.i[22626,22639] [2021-10-29 00:05:27,586 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 00:05:27,629 INFO L208 MainTranslator]: Completed translation [2021-10-29 00:05:27,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:27 WrapperNode [2021-10-29 00:05:27,630 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 00:05:27,631 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 00:05:27,632 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 00:05:27,632 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 00:05:27,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:27" (1/1) ... [2021-10-29 00:05:27,658 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:27" (1/1) ... [2021-10-29 00:05:27,684 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 00:05:27,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 00:05:27,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 00:05:27,686 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 00:05:27,694 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:27" (1/1) ... [2021-10-29 00:05:27,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:27" (1/1) ... [2021-10-29 00:05:27,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:27" (1/1) ... [2021-10-29 00:05:27,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:27" (1/1) ... [2021-10-29 00:05:27,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:27" (1/1) ... [2021-10-29 00:05:27,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:27" (1/1) ... [2021-10-29 00:05:27,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:27" (1/1) ... [2021-10-29 00:05:27,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 00:05:27,727 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 00:05:27,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 00:05:27,727 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 00:05:27,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:27" (1/1) ... [2021-10-29 00:05:27,735 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 00:05:27,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:27,773 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:27,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 00:05:27,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-29 00:05:27,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-29 00:05:27,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-29 00:05:27,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 00:05:27,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-29 00:05:27,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 00:05:27,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-29 00:05:27,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 00:05:27,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 00:05:27,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 00:05:28,784 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 00:05:28,784 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2021-10-29 00:05:28,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:05:28 BoogieIcfgContainer [2021-10-29 00:05:28,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 00:05:28,789 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 00:05:28,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 00:05:28,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 00:05:28,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:05:27" (1/3) ... [2021-10-29 00:05:28,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59c9393b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:05:28, skipping insertion in model container [2021-10-29 00:05:28,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:27" (2/3) ... [2021-10-29 00:05:28,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59c9393b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:05:28, skipping insertion in model container [2021-10-29 00:05:28,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:05:28" (3/3) ... [2021-10-29 00:05:28,795 INFO L111 eAbstractionObserver]: Analyzing ICFG tree-3.i [2021-10-29 00:05:28,801 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 00:05:28,801 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-29 00:05:28,849 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 00:05:28,856 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 [2021-10-29 00:05:28,857 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-29 00:05:28,877 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 42 states have (on average 1.7619047619047619) internal successors, (74), 45 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:28,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 00:05:28,899 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:28,899 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:28,900 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 00:05:28,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:28,911 INFO L85 PathProgramCache]: Analyzing trace with hash -907666448, now seen corresponding path program 1 times [2021-10-29 00:05:28,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-29 00:05:28,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1865567627] [2021-10-29 00:05:28,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:28,928 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 00:05:28,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-29 00:05:28,936 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 00:05:28,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 00:05:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:29,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-29 00:05:29,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:29,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:29,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 00:05:29,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:29,168 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-29 00:05:29,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1865567627] [2021-10-29 00:05:29,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1865567627] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 00:05:29,170 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:05:29,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 00:05:29,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915573195] [2021-10-29 00:05:29,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 00:05:29,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-29 00:05:29,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 00:05:29,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 00:05:29,207 INFO L87 Difference]: Start difference. First operand has 46 states, 42 states have (on average 1.7619047619047619) internal successors, (74), 45 states have internal predecessors, (74), 0 states have call successors, (0), 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 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2021-10-29 00:05:29,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:29,256 INFO L93 Difference]: Finished difference Result 90 states and 146 transitions. [2021-10-29 00:05:29,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 00:05:29,258 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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 [2021-10-29 00:05:29,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:05:29,265 INFO L225 Difference]: With dead ends: 90 [2021-10-29 00:05:29,266 INFO L226 Difference]: Without dead ends: 33 [2021-10-29 00:05:29,273 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 00:05:29,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-29 00:05:29,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-10-29 00:05:29,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 30 states have (on average 1.3) internal successors, (39), 32 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:29,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2021-10-29 00:05:29,311 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 10 [2021-10-29 00:05:29,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:05:29,311 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2021-10-29 00:05:29,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2021-10-29 00:05:29,312 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2021-10-29 00:05:29,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 00:05:29,313 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:29,313 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:29,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:29,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-29 00:05:29,527 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 00:05:29,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:29,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1843172524, now seen corresponding path program 1 times [2021-10-29 00:05:29,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-29 00:05:29,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1018961505] [2021-10-29 00:05:29,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:29,534 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 00:05:29,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-29 00:05:29,536 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 00:05:29,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 00:05:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:29,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 00:05:29,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:29,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:29,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 00:05:29,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:29,793 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-29 00:05:29,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1018961505] [2021-10-29 00:05:29,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1018961505] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 00:05:29,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:05:29,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-29 00:05:29,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500469705] [2021-10-29 00:05:29,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 00:05:29,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-29 00:05:29,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 00:05:29,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 00:05:29,798 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2021-10-29 00:05:30,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:30,002 INFO L93 Difference]: Finished difference Result 59 states and 70 transitions. [2021-10-29 00:05:30,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 00:05:30,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 [2021-10-29 00:05:30,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:05:30,012 INFO L225 Difference]: With dead ends: 59 [2021-10-29 00:05:30,012 INFO L226 Difference]: Without dead ends: 36 [2021-10-29 00:05:30,013 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 00:05:30,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-29 00:05:30,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-10-29 00:05:30,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 33 states have (on average 1.303030303030303) internal successors, (43), 35 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:30,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2021-10-29 00:05:30,019 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 10 [2021-10-29 00:05:30,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:05:30,020 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2021-10-29 00:05:30,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2021-10-29 00:05:30,020 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2021-10-29 00:05:30,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 00:05:30,021 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:30,021 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:30,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:30,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-29 00:05:30,222 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 00:05:30,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:30,223 INFO L85 PathProgramCache]: Analyzing trace with hash -68165162, now seen corresponding path program 1 times [2021-10-29 00:05:30,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-29 00:05:30,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [304138737] [2021-10-29 00:05:30,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:30,224 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 00:05:30,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-29 00:05:30,229 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 00:05:30,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-29 00:05:30,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:30,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 00:05:30,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:30,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:30,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 00:05:30,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:30,537 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-29 00:05:30,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [304138737] [2021-10-29 00:05:30,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [304138737] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 00:05:30,538 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:05:30,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-29 00:05:30,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270582290] [2021-10-29 00:05:30,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 00:05:30,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-29 00:05:30,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 00:05:30,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 00:05:30,541 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2021-10-29 00:05:30,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:30,657 INFO L93 Difference]: Finished difference Result 78 states and 93 transitions. [2021-10-29 00:05:30,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 00:05:30,657 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 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 [2021-10-29 00:05:30,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:05:30,658 INFO L225 Difference]: With dead ends: 78 [2021-10-29 00:05:30,658 INFO L226 Difference]: Without dead ends: 41 [2021-10-29 00:05:30,659 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-29 00:05:30,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-29 00:05:30,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2021-10-29 00:05:30,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 37 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) [2021-10-29 00:05:30,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2021-10-29 00:05:30,665 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 10 [2021-10-29 00:05:30,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:05:30,666 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2021-10-29 00:05:30,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2021-10-29 00:05:30,666 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2021-10-29 00:05:30,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-29 00:05:30,667 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:30,667 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:30,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:30,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-29 00:05:30,881 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 00:05:30,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:30,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1748129759, now seen corresponding path program 1 times [2021-10-29 00:05:30,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-29 00:05:30,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [544316722] [2021-10-29 00:05:30,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:30,883 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 00:05:30,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-29 00:05:30,900 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 00:05:30,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-29 00:05:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:31,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:05:31,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:31,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:31,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 00:05:31,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:31,161 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-29 00:05:31,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [544316722] [2021-10-29 00:05:31,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [544316722] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 00:05:31,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:05:31,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-29 00:05:31,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672912158] [2021-10-29 00:05:31,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 00:05:31,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-29 00:05:31,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 00:05:31,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 00:05:31,166 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:32,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:32,318 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2021-10-29 00:05:32,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 00:05:32,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-29 00:05:32,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:05:32,323 INFO L225 Difference]: With dead ends: 61 [2021-10-29 00:05:32,323 INFO L226 Difference]: Without dead ends: 40 [2021-10-29 00:05:32,323 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 00:05:32,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-29 00:05:32,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2021-10-29 00:05:32,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 37 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:32,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2021-10-29 00:05:32,328 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 17 [2021-10-29 00:05:32,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:05:32,329 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2021-10-29 00:05:32,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:32,329 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2021-10-29 00:05:32,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-29 00:05:32,330 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:32,330 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:32,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:32,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-29 00:05:32,531 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 00:05:32,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:32,532 INFO L85 PathProgramCache]: Analyzing trace with hash -562052262, now seen corresponding path program 1 times [2021-10-29 00:05:32,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-29 00:05:32,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [32148222] [2021-10-29 00:05:32,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:32,533 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 00:05:32,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-29 00:05:32,535 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 00:05:32,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-29 00:05:32,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:32,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 00:05:32,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:32,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-29 00:05:32,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 00:05:32,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-29 00:05:32,959 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-29 00:05:32,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [32148222] [2021-10-29 00:05:32,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [32148222] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 00:05:32,960 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:05:32,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-10-29 00:05:32,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591655852] [2021-10-29 00:05:32,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 00:05:32,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-29 00:05:32,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 00:05:32,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-29 00:05:32,966 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:37,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:37,929 INFO L93 Difference]: Finished difference Result 86 states and 99 transitions. [2021-10-29 00:05:37,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 00:05:37,930 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-29 00:05:37,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:05:37,932 INFO L225 Difference]: With dead ends: 86 [2021-10-29 00:05:37,932 INFO L226 Difference]: Without dead ends: 54 [2021-10-29 00:05:37,932 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-29 00:05:37,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-29 00:05:37,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 36. [2021-10-29 00:05:37,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 35 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) [2021-10-29 00:05:37,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2021-10-29 00:05:37,939 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 20 [2021-10-29 00:05:37,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:05:37,939 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2021-10-29 00:05:37,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:37,940 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2021-10-29 00:05:37,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-29 00:05:37,940 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:37,941 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:37,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:38,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-29 00:05:38,156 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 00:05:38,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:38,157 INFO L85 PathProgramCache]: Analyzing trace with hash 65748649, now seen corresponding path program 1 times [2021-10-29 00:05:38,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-29 00:05:38,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1739090314] [2021-10-29 00:05:38,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:38,163 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 00:05:38,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-29 00:05:38,164 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 00:05:38,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-29 00:05:38,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:38,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-29 00:05:38,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:38,418 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 [2021-10-29 00:05:38,678 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 [2021-10-29 00:05:38,696 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 28 treesize of output 24 [2021-10-29 00:05:38,718 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-10-29 00:05:38,719 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 [2021-10-29 00:05:49,097 WARN L207 SmtUtils]: Spent 10.22 s on a formula simplification. DAG size of input: 163 DAG size of output: 47 [2021-10-29 00:05:49,098 INFO L354 Elim1Store]: treesize reduction 1382, result has 6.8 percent of original size [2021-10-29 00:05:49,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 9 new quantified variables, introduced 12 case distinctions, treesize of input 6522 treesize of output 3884 [2021-10-29 00:05:56,654 WARN L207 SmtUtils]: Spent 7.43 s on a formula simplification. DAG size of input: 372 DAG size of output: 152 [2021-10-29 00:05:56,657 INFO L354 Elim1Store]: treesize reduction 2692, result has 12.9 percent of original size [2021-10-29 00:05:56,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 16 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 20 new quantified variables, introduced 44 case distinctions, treesize of input 11891 treesize of output 7854 [2021-10-29 00:05:57,891 INFO L354 Elim1Store]: treesize reduction 292, result has 14.4 percent of original size [2021-10-29 00:05:57,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 9098 treesize of output 6390 [2021-10-29 00:05:58,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:58,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:58,922 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:05:58,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 25 [2021-10-29 00:05:59,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:59,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:59,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:05:59,414 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:05:59,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 25 [2021-10-29 00:06:01,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:01,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:01,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 25 [2021-10-29 00:06:02,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:02,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:02,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:02,062 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 00:06:02,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:02,276 INFO L354 Elim1Store]: treesize reduction 170, result has 27.0 percent of original size [2021-10-29 00:06:02,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 435 treesize of output 331 [2021-10-29 00:06:02,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:02,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:02,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:02,708 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:06:02,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 21 [2021-10-29 00:06:02,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:02,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:02,772 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 00:06:02,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:02,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:02,801 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:06:02,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 112 treesize of output 64 [2021-10-29 00:06:02,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:02,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:02,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:02,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 31 [2021-10-29 00:06:02,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:02,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:02,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:02,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:02,930 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 00:06:02,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:02,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:02,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:02,956 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-29 00:06:02,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 278 treesize of output 248 [2021-10-29 00:06:03,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:03,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:03,234 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:06:03,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 21 [2021-10-29 00:06:03,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:03,296 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 00:06:03,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:03,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:03,318 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:06:03,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 68 [2021-10-29 00:06:03,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:03,385 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 00:06:03,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:03,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:03,400 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-29 00:06:03,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 2217 treesize of output 1736 [2021-10-29 00:06:04,147 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-10-29 00:06:04,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 691 treesize of output 489 [2021-10-29 00:06:04,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:04,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:04,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:04,191 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-10-29 00:06:04,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 637 treesize of output 569 [2021-10-29 00:06:04,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:04,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:04,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:04,252 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-10-29 00:06:04,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 567 treesize of output 531 [2021-10-29 00:06:04,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:04,283 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:06:04,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 511 treesize of output 487 [2021-10-29 00:06:04,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:04,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:04,576 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:06:04,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 96 treesize of output 60 [2021-10-29 00:06:04,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:04,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 21 [2021-10-29 00:06:04,658 INFO L354 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2021-10-29 00:06:04,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 417 treesize of output 295 [2021-10-29 00:06:04,684 INFO L354 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2021-10-29 00:06:04,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 367 treesize of output 253 [2021-10-29 00:06:04,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:04,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:04,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:04,841 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:06:04,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 27 [2021-10-29 00:06:04,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:04,862 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:06:04,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 21 [2021-10-29 00:06:04,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:04,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:04,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:06:04,904 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:06:04,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 31 [2021-10-29 00:06:04,926 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-10-29 00:06:04,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 191 treesize of output 125 [2021-10-29 00:06:05,921 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-29 00:06:05,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 110 treesize of output 65 [2021-10-29 00:06:05,944 INFO L354 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2021-10-29 00:06:05,945 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 53 treesize of output 42 [2021-10-29 00:06:05,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:06:05,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 00:06:06,825 INFO L354 Elim1Store]: treesize reduction 550, result has 49.3 percent of original size [2021-10-29 00:06:06,832 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 1 case distinctions, treesize of input 2666 treesize of output 2384 [2021-10-29 00:06:07,155 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:06:07,156 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 8180 treesize of output 8183 [2021-10-29 00:06:24,322 WARN L207 SmtUtils]: Spent 13.59 s on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2021-10-29 00:06:24,602 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 30123 treesize of output 30119 [2021-10-29 00:06:24,945 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 727426 treesize of output 724858 [2021-10-29 00:07:32,679 WARN L207 SmtUtils]: Spent 1.13 m on a formula simplification. DAG size of input: 2209 DAG size of output: 2178 [2021-10-29 00:07:32,716 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-29 00:07:32,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1739090314] [2021-10-29 00:07:32,717 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-29 00:07:32,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1469092776] [2021-10-29 00:07:32,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:07:32,717 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-29 00:07:32,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/cvc4 [2021-10-29 00:07:32,732 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-29 00:07:32,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-10-29 00:07:33,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:07:33,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-29 00:07:33,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:07:33,082 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 [2021-10-29 00:07:33,264 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 [2021-10-29 00:07:33,289 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 28 treesize of output 24 [2021-10-29 00:07:33,309 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-10-29 00:07:33,310 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 [2021-10-29 00:07:47,104 WARN L207 SmtUtils]: Spent 13.72 s on a formula simplification. DAG size of input: 163 DAG size of output: 47 [2021-10-29 00:07:47,105 INFO L354 Elim1Store]: treesize reduction 1382, result has 6.8 percent of original size [2021-10-29 00:07:47,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 9 new quantified variables, introduced 12 case distinctions, treesize of input 6630 treesize of output 3968 [2021-10-29 00:07:55,789 WARN L207 SmtUtils]: Spent 8.60 s on a formula simplification. DAG size of input: 372 DAG size of output: 152 [2021-10-29 00:07:55,790 INFO L354 Elim1Store]: treesize reduction 2692, result has 12.9 percent of original size [2021-10-29 00:07:55,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 16 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 20 new quantified variables, introduced 44 case distinctions, treesize of input 11955 treesize of output 7478 [2021-10-29 00:07:56,751 INFO L354 Elim1Store]: treesize reduction 292, result has 14.4 percent of original size [2021-10-29 00:07:56,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 8330 treesize of output 6118 [2021-10-29 00:07:57,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:07:57,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:07:57,692 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:07:57,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 25 [2021-10-29 00:07:57,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:07:57,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:07:57,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:07:57,946 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:07:57,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 57 treesize of output 27 [2021-10-29 00:08:00,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:08:00,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:08:00,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:08:00,751 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:08:00,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 21 [2021-10-29 00:08:00,817 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 00:08:00,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:08:00,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:08:00,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:08:00,860 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:08:00,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 104 treesize of output 64 [2021-10-29 00:08:00,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:08:00,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:08:00,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:08:00,990 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:08:00,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 27 [2021-10-29 00:08:01,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:08:01,047 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 00:08:01,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:08:01,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:08:01,081 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:08:01,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 68 [2021-10-29 00:08:01,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:08:01,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:08:01,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:08:01,149 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 00:08:01,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:08:01,197 INFO L354 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2021-10-29 00:08:01,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 2100 treesize of output 1658 [2021-10-29 00:08:02,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:08:02,290 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:08:02,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 21 [2021-10-29 00:08:02,359 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-10-29 00:08:02,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 635 treesize of output 438 [2021-10-29 00:08:02,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:08:02,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:08:02,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:08:02,427 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-10-29 00:08:02,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 587 treesize of output 547 [2021-10-29 00:08:02,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:08:02,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:08:02,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:08:02,509 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-10-29 00:08:02,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 517 treesize of output 481 [2021-10-29 00:08:02,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:08:02,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:08:02,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:08:02,572 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-10-29 00:08:02,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 455 treesize of output 415 [2021-10-29 00:08:03,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:08:03,091 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:08:03,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 21 [2021-10-29 00:08:03,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:08:03,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:08:03,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:08:03,126 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-29 00:08:03,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 445 treesize of output 325 [2021-10-29 00:08:03,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:08:03,149 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:08:03,149 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 437 treesize of output 415 [2021-10-29 00:08:03,479 INFO L354 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2021-10-29 00:08:03,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 395 treesize of output 273 [2021-10-29 00:08:03,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:08:03,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:08:03,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:08:03,823 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:08:03,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 31 [2021-10-29 00:08:03,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:08:03,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:08:03,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:08:03,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 31 [2021-10-29 00:08:03,946 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-10-29 00:08:03,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 241 treesize of output 164 [2021-10-29 00:08:04,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:08:04,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:08:04,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:08:04,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 25 [2021-10-29 00:08:04,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:08:04,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:08:04,141 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:08:04,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 21 [2021-10-29 00:08:04,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 25 [2021-10-29 00:08:04,201 INFO L354 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2021-10-29 00:08:04,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 131 treesize of output 113 [2021-10-29 00:08:04,968 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-29 00:08:04,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 110 treesize of output 65 [2021-10-29 00:08:04,988 INFO L354 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2021-10-29 00:08:04,989 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 53 treesize of output 42 [2021-10-29 00:08:05,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:08:05,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 00:08:07,681 INFO L354 Elim1Store]: treesize reduction 550, result has 49.3 percent of original size [2021-10-29 00:08:07,681 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 1 case distinctions, treesize of input 2666 treesize of output 2384 [2021-10-29 00:08:08,309 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:08:08,309 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 8180 treesize of output 8183 [2021-10-29 00:08:26,801 WARN L207 SmtUtils]: Spent 12.99 s on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2021-10-29 00:08:27,059 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 59740 treesize of output 59724 [2021-10-29 00:08:27,330 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 678305 treesize of output 676593 [2021-10-29 00:09:42,271 WARN L207 SmtUtils]: Spent 1.25 m on a formula simplification. DAG size of input: 1642 DAG size of output: 1642 [2021-10-29 00:09:42,281 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-29 00:09:42,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654565560] [2021-10-29 00:09:42,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:09:42,282 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:09:42,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:09:42,295 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:09:42,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-29 00:09:42,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:09:42,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-29 00:09:42,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:09:42,578 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 [2021-10-29 00:09:42,742 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 30 treesize of output 26 [2021-10-29 00:09:42,759 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-10-29 00:09:42,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23 [2021-10-29 00:09:42,774 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 [2021-10-29 00:09:58,461 WARN L207 SmtUtils]: Spent 15.60 s on a formula simplification. DAG size of input: 164 DAG size of output: 48 [2021-10-29 00:09:58,462 INFO L354 Elim1Store]: treesize reduction 1382, result has 6.8 percent of original size [2021-10-29 00:09:58,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 9 new quantified variables, introduced 12 case distinctions, treesize of input 6630 treesize of output 3968 [2021-10-29 00:09:58,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:06,617 WARN L207 SmtUtils]: Spent 8.10 s on a formula simplification. DAG size of input: 373 DAG size of output: 153 [2021-10-29 00:10:06,618 INFO L354 Elim1Store]: treesize reduction 2692, result has 12.9 percent of original size [2021-10-29 00:10:06,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 16 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 20 new quantified variables, introduced 44 case distinctions, treesize of input 13731 treesize of output 8918 [2021-10-29 00:10:07,603 INFO L354 Elim1Store]: treesize reduction 292, result has 14.4 percent of original size [2021-10-29 00:10:07,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 9722 treesize of output 7510 [2021-10-29 00:10:08,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:08,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:08,579 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:10:08,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 25 [2021-10-29 00:10:08,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:08,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:08,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:08,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 31 [2021-10-29 00:10:12,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:12,574 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 00:10:12,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:12,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:12,627 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:10:12,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 68 [2021-10-29 00:10:13,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:13,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 21 [2021-10-29 00:10:13,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:13,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:13,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 25 [2021-10-29 00:10:13,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:13,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:13,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:13,937 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:10:13,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 25 [2021-10-29 00:10:13,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:14,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:14,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:14,043 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:10:14,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 27 [2021-10-29 00:10:14,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:14,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:14,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:14,146 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:10:14,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 31 [2021-10-29 00:10:14,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:14,180 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 00:10:14,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:14,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:14,363 INFO L354 Elim1Store]: treesize reduction 170, result has 27.0 percent of original size [2021-10-29 00:10:14,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 319 treesize of output 261 [2021-10-29 00:10:14,677 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-10-29 00:10:14,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 796 treesize of output 575 [2021-10-29 00:10:14,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:14,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:14,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:14,733 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-10-29 00:10:14,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 748 treesize of output 708 [2021-10-29 00:10:14,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:14,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:14,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:14,799 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-10-29 00:10:14,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 688 treesize of output 652 [2021-10-29 00:10:14,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:14,844 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-10-29 00:10:14,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 632 treesize of output 594 [2021-10-29 00:10:15,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:15,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:15,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:15,377 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:10:15,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 31 [2021-10-29 00:10:15,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:15,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:15,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:15,439 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:10:15,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 21 [2021-10-29 00:10:15,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:15,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:15,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:15,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:15,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:15,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:15,513 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:10:15,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 194 treesize of output 167 [2021-10-29 00:10:15,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:15,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:15,651 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:10:15,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 45 treesize of output 21 [2021-10-29 00:10:15,691 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-10-29 00:10:15,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 318 treesize of output 216 [2021-10-29 00:10:15,716 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:10:15,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 168 treesize of output 148 [2021-10-29 00:10:15,840 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-29 00:10:15,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 233 treesize of output 156 [2021-10-29 00:10:15,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:15,961 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:10:15,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 21 [2021-10-29 00:10:15,987 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:10:15,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 21 [2021-10-29 00:10:16,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 00:10:16,016 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:10:16,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 21 [2021-10-29 00:10:16,697 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-29 00:10:16,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 110 treesize of output 65 [2021-10-29 00:10:16,714 INFO L354 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2021-10-29 00:10:16,715 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 53 treesize of output 42 [2021-10-29 00:10:16,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:10:16,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 00:10:18,197 INFO L354 Elim1Store]: treesize reduction 550, result has 49.3 percent of original size [2021-10-29 00:10:18,198 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 1 case distinctions, treesize of input 2666 treesize of output 2384 [2021-10-29 00:10:18,656 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:10:18,659 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 8180 treesize of output 8183 [2021-10-29 00:10:46,298 WARN L207 SmtUtils]: Spent 18.21 s on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2021-10-29 00:10:46,572 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 39169 treesize of output 39161 [2021-10-29 00:10:46,873 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 628550 treesize of output 627206 [2021-10-29 00:11:52,557 WARN L207 SmtUtils]: Spent 1.09 m on a formula simplification. DAG size of input: 1935 DAG size of output: 1910 [2021-10-29 00:11:52,580 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-29 00:11:52,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:11:52,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-29 00:11:52,581 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-29 00:11:52,581 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-10-29 00:11:52,595 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 00:11:52,597 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 00:11:52,598 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 00:11:52,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-29 00:11:52,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-29 00:11:53,001 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2021-10-29 00:11:53,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/cvc4 --incremental --print-success --lang smt [2021-10-29 00:11:53,202 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-10-29 00:11:53,206 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 00:11:53,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 12:11:53 BoogieIcfgContainer [2021-10-29 00:11:53,225 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 00:11:53,226 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 00:11:53,226 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 00:11:53,226 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 00:11:53,227 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:05:28" (3/4) ... [2021-10-29 00:11:53,231 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 00:11:53,231 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 00:11:53,232 INFO L168 Benchmark]: Toolchain (without parser) took 386130.11 ms. Allocated memory was 73.4 MB in the beginning and 597.7 MB in the end (delta: 524.3 MB). Free memory was 53.9 MB in the beginning and 559.6 MB in the end (delta: -505.8 MB). Peak memory consumption was 17.0 MB. Max. memory is 16.1 GB. [2021-10-29 00:11:53,233 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 73.4 MB. Free memory was 53.9 MB in the beginning and 53.8 MB in the end (delta: 54.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 00:11:53,233 INFO L168 Benchmark]: CACSL2BoogieTranslator took 525.02 ms. Allocated memory is still 73.4 MB. Free memory was 53.7 MB in the beginning and 47.6 MB in the end (delta: 6.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 00:11:53,234 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.73 ms. Allocated memory is still 73.4 MB. Free memory was 47.6 MB in the beginning and 45.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 00:11:53,234 INFO L168 Benchmark]: Boogie Preprocessor took 40.65 ms. Allocated memory is still 73.4 MB. Free memory was 45.2 MB in the beginning and 43.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 00:11:53,235 INFO L168 Benchmark]: RCFGBuilder took 1060.24 ms. Allocated memory is still 73.4 MB. Free memory was 43.2 MB in the beginning and 45.7 MB in the end (delta: -2.5 MB). Peak memory consumption was 15.3 MB. Max. memory is 16.1 GB. [2021-10-29 00:11:53,235 INFO L168 Benchmark]: TraceAbstraction took 384436.67 ms. Allocated memory was 73.4 MB in the beginning and 597.7 MB in the end (delta: 524.3 MB). Free memory was 45.0 MB in the beginning and 559.6 MB in the end (delta: -514.6 MB). Peak memory consumption was 363.7 MB. Max. memory is 16.1 GB. [2021-10-29 00:11:53,236 INFO L168 Benchmark]: Witness Printer took 5.28 ms. Allocated memory is still 597.7 MB. Free memory is still 559.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 00:11:53,238 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 73.4 MB. Free memory was 53.9 MB in the beginning and 53.8 MB in the end (delta: 54.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 525.02 ms. Allocated memory is still 73.4 MB. Free memory was 53.7 MB in the beginning and 47.6 MB in the end (delta: 6.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.73 ms. Allocated memory is still 73.4 MB. Free memory was 47.6 MB in the beginning and 45.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.65 ms. Allocated memory is still 73.4 MB. Free memory was 45.2 MB in the beginning and 43.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1060.24 ms. Allocated memory is still 73.4 MB. Free memory was 43.2 MB in the beginning and 45.7 MB in the end (delta: -2.5 MB). Peak memory consumption was 15.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 384436.67 ms. Allocated memory was 73.4 MB in the beginning and 597.7 MB in the end (delta: 524.3 MB). Free memory was 45.0 MB in the beginning and 559.6 MB in the end (delta: -514.6 MB). Peak memory consumption was 363.7 MB. Max. memory is 16.1 GB. * Witness Printer took 5.28 ms. Allocated memory is still 597.7 MB. Free memory is still 559.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L585] struct node *nodelast = ((void *)0); [L586] struct node *node = ((void *)0); [L587] COND TRUE __VERIFIER_nondet_int() [L588] node = malloc(sizeof *node) [L589] COND FALSE !(!node) [L591] node->left = ((void *)0) [L592] node->right = nodelast [L593] COND FALSE !(\read(*nodelast)) [L595] int value = __VERIFIER_nondet_int(); [L596] COND TRUE !value [L597] value = 1 [L598] node->value = value [L599] nodelast = node [L587] COND FALSE !(__VERIFIER_nondet_int()) [L601] COND TRUE node != ((void *)0) [L602] node->parent = ((void *)0) [L603] COND TRUE node != ((void *)0) [L604] node->left = malloc(sizeof *node) [L605] COND FALSE !(!node) [L607] EXPR node->left [L607] node->left->left = ((void *)0) [L608] EXPR node->left [L608] node->left->right = ((void *)0) [L609] EXPR node->left [L609] node->left->value = 42 [L610] EXPR node->left [L610] node->left->parent = node [L611] EXPR node->right [L611] node = node->right [L603] COND FALSE !(node != ((void *)0)) [L613] return nodelast; [L634] struct node *data = create_tree(); [L635] COND FALSE !(!data) [L575] COND FALSE !(!(node)) [L576] COND TRUE node != ((void *)0) [L577] node->left [L577] COND TRUE node->left [L578] EXPR node->left [L578] EXPR node->left->value [L578] COND TRUE !(node->left->value == 42) [L565] reach_error() - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 46 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 384.3s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 6.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 184 SDtfs, 159 SDslu, 192 SDs, 0 SdLazy, 121 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=0, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 23 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 115.2s InterpolantComputationTime, 92 NumberOfCodeBlocks, 92 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 148 ConstructedInterpolants, 0 QuantifiedInterpolants, 1434 SizeOfPredicates, 24 NumberOfNonLiveVariables, 355 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 11 InterpolantComputations, 10 PerfectInterpolantSequences, 7/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-29 00:11:53,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04971654-cf7c-4acf-9973-0a59bd68f5dc/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...