./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/LogRecursive.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/LogRecursive.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e724a514255a950b17f8b31ed081620ead5e2540931c6bb88a6923d310e5f391 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 02:50:55,459 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 02:50:55,461 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 02:50:55,484 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 02:50:55,484 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 02:50:55,486 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 02:50:55,487 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 02:50:55,490 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 02:50:55,492 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 02:50:55,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 02:50:55,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 02:50:55,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 02:50:55,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 02:50:55,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 02:50:55,499 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 02:50:55,501 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 02:50:55,502 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 02:50:55,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 02:50:55,506 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 02:50:55,509 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 02:50:55,511 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 02:50:55,512 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 02:50:55,514 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 02:50:55,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 02:50:55,520 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 02:50:55,521 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 02:50:55,521 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 02:50:55,522 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 02:50:55,523 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 02:50:55,524 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 02:50:55,525 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 02:50:55,526 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 02:50:55,527 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 02:50:55,528 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 02:50:55,530 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 02:50:55,530 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 02:50:55,531 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 02:50:55,532 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 02:50:55,532 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 02:50:55,533 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 02:50:55,534 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 02:50:55,535 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-11-23 02:50:55,562 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 02:50:55,563 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 02:50:55,563 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 02:50:55,563 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 02:50:55,564 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 02:50:55,565 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 02:50:55,565 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 02:50:55,566 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 02:50:55,566 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 02:50:55,566 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 02:50:55,566 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 02:50:55,567 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 02:50:55,567 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 02:50:55,567 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 02:50:55,567 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 02:50:55,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 02:50:55,568 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 02:50:55,568 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 02:50:55,568 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 02:50:55,568 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 02:50:55,569 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 02:50:55,569 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 02:50:55,569 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 02:50:55,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:50:55,570 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 02:50:55,570 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 02:50:55,570 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 02:50:55,570 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 02:50:55,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 02:50:55,571 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 02:50:55,571 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 02:50:55,571 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 02:50:55,571 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 02:50:55,571 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e724a514255a950b17f8b31ed081620ead5e2540931c6bb88a6923d310e5f391 [2022-11-23 02:50:55,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 02:50:55,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 02:50:55,885 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 02:50:55,886 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 02:50:55,887 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 02:50:55,888 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/termination-numeric/LogRecursive.c [2022-11-23 02:50:58,977 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 02:50:59,271 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 02:50:59,272 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/sv-benchmarks/c/termination-numeric/LogRecursive.c [2022-11-23 02:50:59,281 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/data/5b9b141d8/dcbef44c35904eeeba4a06c318059911/FLAG12eb23adf [2022-11-23 02:50:59,307 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/data/5b9b141d8/dcbef44c35904eeeba4a06c318059911 [2022-11-23 02:50:59,313 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 02:50:59,316 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 02:50:59,320 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 02:50:59,320 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 02:50:59,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 02:50:59,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:50:59" (1/1) ... [2022-11-23 02:50:59,327 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e48c59c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:50:59, skipping insertion in model container [2022-11-23 02:50:59,327 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:50:59" (1/1) ... [2022-11-23 02:50:59,335 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 02:50:59,353 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 02:50:59,584 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:50:59,590 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 02:50:59,616 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:50:59,631 INFO L208 MainTranslator]: Completed translation [2022-11-23 02:50:59,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:50:59 WrapperNode [2022-11-23 02:50:59,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 02:50:59,638 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 02:50:59,638 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 02:50:59,639 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 02:50:59,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:50:59" (1/1) ... [2022-11-23 02:50:59,654 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:50:59" (1/1) ... [2022-11-23 02:50:59,674 INFO L138 Inliner]: procedures = 6, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-11-23 02:50:59,674 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 02:50:59,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 02:50:59,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 02:50:59,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 02:50:59,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:50:59" (1/1) ... [2022-11-23 02:50:59,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:50:59" (1/1) ... [2022-11-23 02:50:59,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:50:59" (1/1) ... [2022-11-23 02:50:59,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:50:59" (1/1) ... [2022-11-23 02:50:59,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:50:59" (1/1) ... [2022-11-23 02:50:59,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:50:59" (1/1) ... [2022-11-23 02:50:59,709 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:50:59" (1/1) ... [2022-11-23 02:50:59,710 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:50:59" (1/1) ... [2022-11-23 02:50:59,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 02:50:59,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 02:50:59,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 02:50:59,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 02:50:59,716 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:50:59" (1/1) ... [2022-11-23 02:50:59,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:50:59,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:50:59,760 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 02:50:59,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 02:50:59,816 INFO L130 BoogieDeclarations]: Found specification of procedure _log [2022-11-23 02:50:59,816 INFO L138 BoogieDeclarations]: Found implementation of procedure _log [2022-11-23 02:50:59,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 02:50:59,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 02:50:59,882 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 02:50:59,884 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 02:51:00,031 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 02:51:00,039 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 02:51:00,039 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 02:51:00,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:51:00 BoogieIcfgContainer [2022-11-23 02:51:00,041 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 02:51:00,044 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 02:51:00,044 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 02:51:00,048 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 02:51:00,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:50:59" (1/3) ... [2022-11-23 02:51:00,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bf0ce4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:51:00, skipping insertion in model container [2022-11-23 02:51:00,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:50:59" (2/3) ... [2022-11-23 02:51:00,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bf0ce4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:51:00, skipping insertion in model container [2022-11-23 02:51:00,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:51:00" (3/3) ... [2022-11-23 02:51:00,051 INFO L112 eAbstractionObserver]: Analyzing ICFG LogRecursive.c [2022-11-23 02:51:00,083 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 02:51:00,083 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-23 02:51:00,168 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:51:00,178 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@181ad347, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:51:00,178 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-23 02:51:00,183 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 19 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 02:51:00,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 02:51:00,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:51:00,193 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:51:00,194 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting _logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [_logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 02:51:00,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:51:00,204 INFO L85 PathProgramCache]: Analyzing trace with hash -211694171, now seen corresponding path program 1 times [2022-11-23 02:51:00,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:51:00,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859905132] [2022-11-23 02:51:00,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:51:00,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:51:00,354 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:51:00,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [653009330] [2022-11-23 02:51:00,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:51:00,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:51:00,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:51:00,360 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:51:00,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 02:51:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:51:00,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 02:51:00,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:51:00,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:51:00,523 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:51:00,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:51:00,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859905132] [2022-11-23 02:51:00,524 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:51:00,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653009330] [2022-11-23 02:51:00,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653009330] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:51:00,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:51:00,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:51:00,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342614457] [2022-11-23 02:51:00,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:51:00,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:51:00,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:51:00,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:51:00,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:51:00,604 INFO L87 Difference]: Start difference. First operand has 23 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 19 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:51:00,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:51:00,710 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2022-11-23 02:51:00,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:51:00,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-23 02:51:00,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:51:00,722 INFO L225 Difference]: With dead ends: 25 [2022-11-23 02:51:00,723 INFO L226 Difference]: Without dead ends: 20 [2022-11-23 02:51:00,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:51:00,736 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 9 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:51:00,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 37 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:51:00,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-23 02:51:00,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2022-11-23 02:51:00,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 15 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 02:51:00,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-11-23 02:51:00,785 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 8 [2022-11-23 02:51:00,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:51:00,788 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-11-23 02:51:00,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:51:00,792 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-11-23 02:51:00,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 02:51:00,793 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:51:00,793 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:51:00,805 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 02:51:00,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-23 02:51:01,000 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [_logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 02:51:01,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:51:01,000 INFO L85 PathProgramCache]: Analyzing trace with hash 2027415328, now seen corresponding path program 1 times [2022-11-23 02:51:01,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:51:01,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489675594] [2022-11-23 02:51:01,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:51:01,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:51:01,014 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:51:01,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [663046288] [2022-11-23 02:51:01,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:51:01,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:51:01,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:51:01,016 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:51:01,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 02:51:01,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:51:01,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 02:51:01,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:51:01,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:51:01,184 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:51:01,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:51:01,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489675594] [2022-11-23 02:51:01,185 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:51:01,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663046288] [2022-11-23 02:51:01,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663046288] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:51:01,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:51:01,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 02:51:01,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045967420] [2022-11-23 02:51:01,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:51:01,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:51:01,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:51:01,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:51:01,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:51:01,190 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:51:01,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:51:01,261 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2022-11-23 02:51:01,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:51:01,263 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-23 02:51:01,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:51:01,264 INFO L225 Difference]: With dead ends: 20 [2022-11-23 02:51:01,264 INFO L226 Difference]: Without dead ends: 19 [2022-11-23 02:51:01,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:51:01,266 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 28 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:51:01,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 27 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:51:01,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-23 02:51:01,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2022-11-23 02:51:01,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 14 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 02:51:01,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2022-11-23 02:51:01,272 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2022-11-23 02:51:01,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:51:01,273 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2022-11-23 02:51:01,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:51:01,273 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2022-11-23 02:51:01,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 02:51:01,274 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:51:01,274 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:51:01,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 02:51:01,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:51:01,481 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [_logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 02:51:01,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:51:01,484 INFO L85 PathProgramCache]: Analyzing trace with hash -768770172, now seen corresponding path program 1 times [2022-11-23 02:51:01,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:51:01,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322378620] [2022-11-23 02:51:01,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:51:01,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:51:01,504 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:51:01,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1108457170] [2022-11-23 02:51:01,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:51:01,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:51:01,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:51:01,510 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:51:01,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 02:51:01,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:51:01,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 02:51:01,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:51:01,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 02:51:01,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:51:01,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:51:01,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322378620] [2022-11-23 02:51:01,605 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:51:01,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108457170] [2022-11-23 02:51:01,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108457170] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:51:01,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:51:01,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:51:01,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291655655] [2022-11-23 02:51:01,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:51:01,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:51:01,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:51:01,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:51:01,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:51:01,610 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 02:51:01,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:51:01,631 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2022-11-23 02:51:01,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:51:01,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-23 02:51:01,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:51:01,633 INFO L225 Difference]: With dead ends: 17 [2022-11-23 02:51:01,633 INFO L226 Difference]: Without dead ends: 16 [2022-11-23 02:51:01,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:51:01,635 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 2 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:51:01,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 27 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:51:01,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-23 02:51:01,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-11-23 02:51:01,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 02:51:01,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-11-23 02:51:01,640 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 16 [2022-11-23 02:51:01,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:51:01,641 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-11-23 02:51:01,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 02:51:01,641 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-11-23 02:51:01,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-23 02:51:01,647 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:51:01,647 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:51:01,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 02:51:01,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:51:01,860 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting _logErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [_logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 02:51:01,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:51:01,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1059120524, now seen corresponding path program 1 times [2022-11-23 02:51:01,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:51:01,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809324438] [2022-11-23 02:51:01,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:51:01,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:51:01,889 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:51:01,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1206054152] [2022-11-23 02:51:01,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:51:01,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:51:01,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:51:01,897 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:51:01,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 02:51:01,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:51:01,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 02:51:01,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:51:01,998 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 02:51:01,998 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:51:01,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:51:01,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809324438] [2022-11-23 02:51:01,999 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:51:01,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206054152] [2022-11-23 02:51:01,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206054152] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:51:02,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:51:02,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:51:02,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424742297] [2022-11-23 02:51:02,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:51:02,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:51:02,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:51:02,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:51:02,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:51:02,002 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 02:51:02,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:51:02,021 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2022-11-23 02:51:02,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:51:02,022 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-11-23 02:51:02,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:51:02,023 INFO L225 Difference]: With dead ends: 22 [2022-11-23 02:51:02,023 INFO L226 Difference]: Without dead ends: 21 [2022-11-23 02:51:02,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:51:02,025 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:51:02,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:51:02,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-23 02:51:02,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-23 02:51:02,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 02:51:02,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2022-11-23 02:51:02,032 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 22 [2022-11-23 02:51:02,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:51:02,032 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2022-11-23 02:51:02,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 02:51:02,033 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2022-11-23 02:51:02,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-23 02:51:02,034 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:51:02,034 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:51:02,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 02:51:02,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:51:02,240 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting _logErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [_logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 02:51:02,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:51:02,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1451429522, now seen corresponding path program 1 times [2022-11-23 02:51:02,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:51:02,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913613532] [2022-11-23 02:51:02,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:51:02,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:51:02,256 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:51:02,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1051726437] [2022-11-23 02:51:02,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:51:02,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:51:02,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:51:02,258 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:51:02,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 02:51:02,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:51:02,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 02:51:02,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:51:02,433 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-23 02:51:02,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:51:02,584 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-23 02:51:02,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:51:02,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913613532] [2022-11-23 02:51:02,593 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:51:02,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051726437] [2022-11-23 02:51:02,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051726437] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:51:02,594 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 02:51:02,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-11-23 02:51:02,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592447859] [2022-11-23 02:51:02,595 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 02:51:02,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 02:51:02,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:51:02,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 02:51:02,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:51:02,597 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 10 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 02:51:02,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:51:02,668 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2022-11-23 02:51:02,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 02:51:02,669 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 10 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) Word has length 32 [2022-11-23 02:51:02,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:51:02,670 INFO L225 Difference]: With dead ends: 37 [2022-11-23 02:51:02,671 INFO L226 Difference]: Without dead ends: 36 [2022-11-23 02:51:02,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:51:02,672 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:51:02,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 65 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:51:02,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-23 02:51:02,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-11-23 02:51:02,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 29 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-23 02:51:02,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2022-11-23 02:51:02,680 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 32 [2022-11-23 02:51:02,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:51:02,681 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2022-11-23 02:51:02,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 10 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 02:51:02,681 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2022-11-23 02:51:02,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-23 02:51:02,682 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:51:02,683 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:51:02,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 02:51:02,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:51:02,889 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting _logErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [_logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 02:51:02,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:51:02,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1418031143, now seen corresponding path program 2 times [2022-11-23 02:51:02,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:51:02,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677765811] [2022-11-23 02:51:02,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:51:02,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:51:02,912 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:51:02,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [19255163] [2022-11-23 02:51:02,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 02:51:02,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:51:02,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:51:02,918 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:51:02,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 02:51:03,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 02:51:03,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:51:03,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-23 02:51:03,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:51:03,180 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-23 02:51:03,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:51:04,173 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-23 02:51:04,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:51:04,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677765811] [2022-11-23 02:51:04,174 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:51:04,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19255163] [2022-11-23 02:51:04,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19255163] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:51:04,174 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 02:51:04,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2022-11-23 02:51:04,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150574963] [2022-11-23 02:51:04,175 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 02:51:04,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-23 02:51:04,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:51:04,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-23 02:51:04,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-11-23 02:51:04,177 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 22 states, 21 states have (on average 2.380952380952381) internal successors, (50), 22 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-23 02:51:04,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:51:04,284 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2022-11-23 02:51:04,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-23 02:51:04,285 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.380952380952381) internal successors, (50), 22 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) Word has length 57 [2022-11-23 02:51:04,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:51:04,286 INFO L225 Difference]: With dead ends: 67 [2022-11-23 02:51:04,287 INFO L226 Difference]: Without dead ends: 66 [2022-11-23 02:51:04,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-11-23 02:51:04,288 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:51:04,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:51:04,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-11-23 02:51:04,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2022-11-23 02:51:04,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 53 states have internal predecessors, (54), 2 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-23 02:51:04,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2022-11-23 02:51:04,299 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 57 [2022-11-23 02:51:04,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:51:04,300 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2022-11-23 02:51:04,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.380952380952381) internal successors, (50), 22 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-23 02:51:04,300 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2022-11-23 02:51:04,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-23 02:51:04,303 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:51:04,304 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:51:04,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 02:51:04,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-23 02:51:04,510 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting _logErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [_logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 02:51:04,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:51:04,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1057277068, now seen corresponding path program 3 times [2022-11-23 02:51:04,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:51:04,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097669207] [2022-11-23 02:51:04,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:51:04,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:51:04,535 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:51:04,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [987336764] [2022-11-23 02:51:04,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 02:51:04,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:51:04,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:51:04,538 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:51:04,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 02:51:04,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-11-23 02:51:04,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:51:04,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-23 02:51:04,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:51:05,109 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2022-11-23 02:51:05,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:51:11,033 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2022-11-23 02:51:11,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:51:11,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097669207] [2022-11-23 02:51:11,034 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:51:11,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987336764] [2022-11-23 02:51:11,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987336764] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:51:11,034 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 02:51:11,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 45 [2022-11-23 02:51:11,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755661344] [2022-11-23 02:51:11,035 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 02:51:11,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-23 02:51:11,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:51:11,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-23 02:51:11,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2022-11-23 02:51:11,038 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand has 46 states, 45 states have (on average 2.1777777777777776) internal successors, (98), 46 states have internal predecessors, (98), 1 states have call successors, (2), 1 states have call predecessors, (2), 22 states have return successors, (22), 22 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-23 02:51:11,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:51:11,243 INFO L93 Difference]: Finished difference Result 127 states and 139 transitions. [2022-11-23 02:51:11,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-23 02:51:11,243 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.1777777777777776) internal successors, (98), 46 states have internal predecessors, (98), 1 states have call successors, (2), 1 states have call predecessors, (2), 22 states have return successors, (22), 22 states have call predecessors, (22), 1 states have call successors, (22) Word has length 122 [2022-11-23 02:51:11,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:51:11,245 INFO L225 Difference]: With dead ends: 127 [2022-11-23 02:51:11,245 INFO L226 Difference]: Without dead ends: 126 [2022-11-23 02:51:11,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2022-11-23 02:51:11,247 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 02:51:11,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 95 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 02:51:11,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-11-23 02:51:11,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2022-11-23 02:51:11,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 100 states have (on average 1.02) internal successors, (102), 101 states have internal predecessors, (102), 2 states have call successors, (2), 1 states have call predecessors, (2), 23 states have return successors, (23), 23 states have call predecessors, (23), 1 states have call successors, (23) [2022-11-23 02:51:11,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 127 transitions. [2022-11-23 02:51:11,259 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 127 transitions. Word has length 122 [2022-11-23 02:51:11,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:51:11,260 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 127 transitions. [2022-11-23 02:51:11,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.1777777777777776) internal successors, (98), 46 states have internal predecessors, (98), 1 states have call successors, (2), 1 states have call predecessors, (2), 22 states have return successors, (22), 22 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-23 02:51:11,260 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 127 transitions. [2022-11-23 02:51:11,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-11-23 02:51:11,263 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:51:11,264 INFO L195 NwaCegarLoop]: trace histogram [25, 24, 24, 24, 24, 23, 23, 23, 23, 22, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:51:11,270 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-23 02:51:11,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-23 02:51:11,470 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting _logErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [_logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 02:51:11,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:51:11,470 INFO L85 PathProgramCache]: Analyzing trace with hash 840779404, now seen corresponding path program 4 times [2022-11-23 02:51:11,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:51:11,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364194667] [2022-11-23 02:51:11,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:51:11,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:51:11,529 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:51:11,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1038068754] [2022-11-23 02:51:11,532 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 02:51:11,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:51:11,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:51:11,539 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:51:11,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 02:51:12,351 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 02:51:12,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:51:12,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-23 02:51:12,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:51:13,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2693 backedges. 0 proven. 1265 refuted. 0 times theorem prover too weak. 1428 trivial. 0 not checked. [2022-11-23 02:51:13,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:52:02,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2693 backedges. 0 proven. 1265 refuted. 0 times theorem prover too weak. 1428 trivial. 0 not checked. [2022-11-23 02:52:02,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:52:02,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364194667] [2022-11-23 02:52:02,338 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:52:02,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038068754] [2022-11-23 02:52:02,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038068754] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:52:02,339 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 02:52:02,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 93 [2022-11-23 02:52:02,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210671032] [2022-11-23 02:52:02,339 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 02:52:02,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-11-23 02:52:02,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:52:02,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-11-23 02:52:02,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2255, Invalid=6487, Unknown=0, NotChecked=0, Total=8742 [2022-11-23 02:52:02,347 INFO L87 Difference]: Start difference. First operand 126 states and 127 transitions. Second operand has 94 states, 93 states have (on average 2.086021505376344) internal successors, (194), 94 states have internal predecessors, (194), 1 states have call successors, (2), 1 states have call predecessors, (2), 46 states have return successors, (46), 46 states have call predecessors, (46), 1 states have call successors, (46) [2022-11-23 02:52:02,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:52:02,780 INFO L93 Difference]: Finished difference Result 247 states and 271 transitions. [2022-11-23 02:52:02,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-11-23 02:52:02,782 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 2.086021505376344) internal successors, (194), 94 states have internal predecessors, (194), 1 states have call successors, (2), 1 states have call predecessors, (2), 46 states have return successors, (46), 46 states have call predecessors, (46), 1 states have call successors, (46) Word has length 242 [2022-11-23 02:52:02,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:52:02,794 INFO L225 Difference]: With dead ends: 247 [2022-11-23 02:52:02,795 INFO L226 Difference]: Without dead ends: 246 [2022-11-23 02:52:02,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2509 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2255, Invalid=6487, Unknown=0, NotChecked=0, Total=8742 [2022-11-23 02:52:02,800 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 02:52:02,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 177 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 02:52:02,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-11-23 02:52:02,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2022-11-23 02:52:02,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 196 states have (on average 1.010204081632653) internal successors, (198), 197 states have internal predecessors, (198), 2 states have call successors, (2), 1 states have call predecessors, (2), 47 states have return successors, (47), 47 states have call predecessors, (47), 1 states have call successors, (47) [2022-11-23 02:52:02,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 247 transitions. [2022-11-23 02:52:02,838 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 247 transitions. Word has length 242 [2022-11-23 02:52:02,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:52:02,839 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 247 transitions. [2022-11-23 02:52:02,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 2.086021505376344) internal successors, (194), 94 states have internal predecessors, (194), 1 states have call successors, (2), 1 states have call predecessors, (2), 46 states have return successors, (46), 46 states have call predecessors, (46), 1 states have call successors, (46) [2022-11-23 02:52:02,839 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 247 transitions. [2022-11-23 02:52:02,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2022-11-23 02:52:02,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:52:02,849 INFO L195 NwaCegarLoop]: trace histogram [48, 47, 47, 47, 47, 47, 47, 47, 47, 46, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:52:02,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-23 02:52:03,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-23 02:52:03,059 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting _logErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [_logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 02:52:03,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:52:03,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1188208039, now seen corresponding path program 5 times [2022-11-23 02:52:03,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:52:03,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825351100] [2022-11-23 02:52:03,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:52:03,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:52:03,115 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:52:03,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [10103696] [2022-11-23 02:52:03,115 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-23 02:52:03,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:52:03,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:52:03,117 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:52:03,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-23 02:54:59,950 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2022-11-23 02:54:59,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:54:59,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 238 conjunts are in the unsatisfiable core [2022-11-23 02:55:00,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:58:12,684 WARN L837 $PredicateComparison]: unable to prove that (and (exists ((v__log_~x_1096 Int) (v__log_~x_1097 Int) (v__log_~x_1098 Int) (v__log_~x_1099 Int) (v__log_~x_1092 Int) (v__log_~x_1093 Int) (v__log_~x_1094 Int) (v__log_~x_1095 Int) (_log_~x Int) (v__log_~x_1090 Int) (v__log_~x_1091 Int)) (and (<= v__log_~x_1090 (div v__log_~x_1091 |c__log_#in~y|)) (<= _log_~x |c__log_#in~x|) (<= v__log_~x_1093 (div v__log_~x_1094 |c__log_#in~y|)) (<= v__log_~x_1092 (div v__log_~x_1093 |c__log_#in~y|)) (<= v__log_~x_1096 (div v__log_~x_1097 |c__log_#in~y|)) (<= v__log_~x_1094 (div v__log_~x_1095 |c__log_#in~y|)) (<= v__log_~x_1095 (div v__log_~x_1096 |c__log_#in~y|)) (<= v__log_~x_1097 (div v__log_~x_1098 |c__log_#in~y|)) (<= v__log_~x_1098 (div v__log_~x_1099 |c__log_#in~y|)) (<= |c__log_#in~y| (div v__log_~x_1090 |c__log_#in~y|)) (<= v__log_~x_1099 (div _log_~x |c__log_#in~y|)) (<= v__log_~x_1091 (div v__log_~x_1092 |c__log_#in~y|)))) (< 1 |c__log_#in~y|)) is different from false [2022-11-23 02:58:26,750 WARN L837 $PredicateComparison]: unable to prove that (and (exists ((v__log_~x_1100 Int) (v__log_~x_1096 Int) (v__log_~x_1097 Int) (v__log_~x_1098 Int) (v__log_~x_1099 Int) (v__log_~x_1092 Int) (v__log_~x_1093 Int) (v__log_~x_1094 Int) (v__log_~x_1095 Int) (_log_~x Int) (v__log_~x_1090 Int) (v__log_~x_1091 Int)) (and (<= v__log_~x_1090 (div v__log_~x_1091 |c__log_#in~y|)) (<= _log_~x |c__log_#in~x|) (<= v__log_~x_1093 (div v__log_~x_1094 |c__log_#in~y|)) (<= v__log_~x_1092 (div v__log_~x_1093 |c__log_#in~y|)) (<= v__log_~x_1099 (div v__log_~x_1100 |c__log_#in~y|)) (<= v__log_~x_1096 (div v__log_~x_1097 |c__log_#in~y|)) (<= v__log_~x_1094 (div v__log_~x_1095 |c__log_#in~y|)) (<= v__log_~x_1095 (div v__log_~x_1096 |c__log_#in~y|)) (<= v__log_~x_1100 (div _log_~x |c__log_#in~y|)) (<= v__log_~x_1097 (div v__log_~x_1098 |c__log_#in~y|)) (<= v__log_~x_1098 (div v__log_~x_1099 |c__log_#in~y|)) (<= |c__log_#in~y| (div v__log_~x_1090 |c__log_#in~y|)) (<= v__log_~x_1091 (div v__log_~x_1092 |c__log_#in~y|)))) (< 1 |c__log_#in~y|)) is different from false [2022-11-23 02:59:56,247 WARN L837 $PredicateComparison]: unable to prove that (and (exists ((v__log_~x_1100 Int) (v__log_~x_1101 Int) (v__log_~x_1102 Int) (v__log_~x_1096 Int) (v__log_~x_1097 Int) (v__log_~x_1098 Int) (v__log_~x_1099 Int) (v__log_~x_1092 Int) (v__log_~x_1093 Int) (v__log_~x_1094 Int) (v__log_~x_1095 Int) (_log_~x Int) (v__log_~x_1090 Int) (v__log_~x_1091 Int)) (and (<= v__log_~x_1090 (div v__log_~x_1091 |c__log_#in~y|)) (<= _log_~x |c__log_#in~x|) (<= v__log_~x_1093 (div v__log_~x_1094 |c__log_#in~y|)) (<= v__log_~x_1092 (div v__log_~x_1093 |c__log_#in~y|)) (<= v__log_~x_1099 (div v__log_~x_1100 |c__log_#in~y|)) (<= v__log_~x_1096 (div v__log_~x_1097 |c__log_#in~y|)) (<= v__log_~x_1101 (div v__log_~x_1102 |c__log_#in~y|)) (<= v__log_~x_1094 (div v__log_~x_1095 |c__log_#in~y|)) (<= v__log_~x_1095 (div v__log_~x_1096 |c__log_#in~y|)) (<= v__log_~x_1102 (div _log_~x |c__log_#in~y|)) (<= v__log_~x_1097 (div v__log_~x_1098 |c__log_#in~y|)) (<= v__log_~x_1098 (div v__log_~x_1099 |c__log_#in~y|)) (<= |c__log_#in~y| (div v__log_~x_1090 |c__log_#in~y|)) (<= v__log_~x_1100 (div v__log_~x_1101 |c__log_#in~y|)) (<= v__log_~x_1091 (div v__log_~x_1092 |c__log_#in~y|)))) (< 1 |c__log_#in~y|)) is different from false [2022-11-23 03:00:07,231 WARN L837 $PredicateComparison]: unable to prove that (and (exists ((v__log_~x_1100 Int) (v__log_~x_1101 Int) (v__log_~x_1102 Int) (v__log_~x_1103 Int) (v__log_~x_1096 Int) (v__log_~x_1097 Int) (v__log_~x_1098 Int) (v__log_~x_1099 Int) (v__log_~x_1092 Int) (v__log_~x_1093 Int) (v__log_~x_1094 Int) (v__log_~x_1095 Int) (_log_~x Int) (v__log_~x_1090 Int) (v__log_~x_1091 Int)) (and (<= v__log_~x_1090 (div v__log_~x_1091 |c__log_#in~y|)) (<= _log_~x |c__log_#in~x|) (<= v__log_~x_1093 (div v__log_~x_1094 |c__log_#in~y|)) (<= v__log_~x_1092 (div v__log_~x_1093 |c__log_#in~y|)) (<= v__log_~x_1099 (div v__log_~x_1100 |c__log_#in~y|)) (<= v__log_~x_1096 (div v__log_~x_1097 |c__log_#in~y|)) (<= v__log_~x_1101 (div v__log_~x_1102 |c__log_#in~y|)) (<= v__log_~x_1094 (div v__log_~x_1095 |c__log_#in~y|)) (<= v__log_~x_1095 (div v__log_~x_1096 |c__log_#in~y|)) (<= v__log_~x_1102 (div v__log_~x_1103 |c__log_#in~y|)) (<= v__log_~x_1097 (div v__log_~x_1098 |c__log_#in~y|)) (<= v__log_~x_1098 (div v__log_~x_1099 |c__log_#in~y|)) (<= |c__log_#in~y| (div v__log_~x_1090 |c__log_#in~y|)) (<= v__log_~x_1103 (div _log_~x |c__log_#in~y|)) (<= v__log_~x_1100 (div v__log_~x_1101 |c__log_#in~y|)) (<= v__log_~x_1091 (div v__log_~x_1092 |c__log_#in~y|)))) (< 1 |c__log_#in~y|)) is different from false [2022-11-23 03:00:30,346 WARN L837 $PredicateComparison]: unable to prove that (and (exists ((v__log_~x_1100 Int) (v__log_~x_1101 Int) (v__log_~x_1102 Int) (v__log_~x_1103 Int) (v__log_~x_1096 Int) (v__log_~x_1097 Int) (v__log_~x_1098 Int) (v__log_~x_1099 Int) (v__log_~x_1104 Int) (v__log_~x_1092 Int) (v__log_~x_1093 Int) (v__log_~x_1094 Int) (v__log_~x_1095 Int) (_log_~x Int) (v__log_~x_1090 Int) (v__log_~x_1091 Int)) (and (<= v__log_~x_1090 (div v__log_~x_1091 |c__log_#in~y|)) (<= _log_~x |c__log_#in~x|) (<= v__log_~x_1093 (div v__log_~x_1094 |c__log_#in~y|)) (<= v__log_~x_1092 (div v__log_~x_1093 |c__log_#in~y|)) (<= v__log_~x_1099 (div v__log_~x_1100 |c__log_#in~y|)) (<= v__log_~x_1096 (div v__log_~x_1097 |c__log_#in~y|)) (<= v__log_~x_1101 (div v__log_~x_1102 |c__log_#in~y|)) (<= v__log_~x_1094 (div v__log_~x_1095 |c__log_#in~y|)) (<= v__log_~x_1095 (div v__log_~x_1096 |c__log_#in~y|)) (<= v__log_~x_1102 (div v__log_~x_1103 |c__log_#in~y|)) (<= v__log_~x_1097 (div v__log_~x_1098 |c__log_#in~y|)) (<= v__log_~x_1098 (div v__log_~x_1099 |c__log_#in~y|)) (<= |c__log_#in~y| (div v__log_~x_1090 |c__log_#in~y|)) (<= v__log_~x_1104 (div _log_~x |c__log_#in~y|)) (<= v__log_~x_1100 (div v__log_~x_1101 |c__log_#in~y|)) (<= v__log_~x_1091 (div v__log_~x_1092 |c__log_#in~y|)) (<= v__log_~x_1103 (div v__log_~x_1104 |c__log_#in~y|)))) (< 1 |c__log_#in~y|)) is different from false [2022-11-23 03:01:07,683 WARN L837 $PredicateComparison]: unable to prove that (and (exists ((v__log_~x_1100 Int) (v__log_~x_1101 Int) (v__log_~x_1102 Int) (v__log_~x_1103 Int) (v__log_~x_1096 Int) (v__log_~x_1097 Int) (v__log_~x_1098 Int) (v__log_~x_1099 Int) (v__log_~x_1104 Int) (v__log_~x_1105 Int) (v__log_~x_1092 Int) (v__log_~x_1093 Int) (v__log_~x_1094 Int) (v__log_~x_1095 Int) (_log_~x Int) (v__log_~x_1090 Int) (v__log_~x_1091 Int)) (and (<= v__log_~x_1090 (div v__log_~x_1091 |c__log_#in~y|)) (<= _log_~x |c__log_#in~x|) (<= v__log_~x_1093 (div v__log_~x_1094 |c__log_#in~y|)) (<= v__log_~x_1092 (div v__log_~x_1093 |c__log_#in~y|)) (<= v__log_~x_1099 (div v__log_~x_1100 |c__log_#in~y|)) (<= v__log_~x_1096 (div v__log_~x_1097 |c__log_#in~y|)) (<= v__log_~x_1101 (div v__log_~x_1102 |c__log_#in~y|)) (<= v__log_~x_1094 (div v__log_~x_1095 |c__log_#in~y|)) (<= v__log_~x_1095 (div v__log_~x_1096 |c__log_#in~y|)) (<= v__log_~x_1102 (div v__log_~x_1103 |c__log_#in~y|)) (<= v__log_~x_1105 (div _log_~x |c__log_#in~y|)) (<= v__log_~x_1097 (div v__log_~x_1098 |c__log_#in~y|)) (<= v__log_~x_1098 (div v__log_~x_1099 |c__log_#in~y|)) (<= |c__log_#in~y| (div v__log_~x_1090 |c__log_#in~y|)) (<= v__log_~x_1100 (div v__log_~x_1101 |c__log_#in~y|)) (<= v__log_~x_1091 (div v__log_~x_1092 |c__log_#in~y|)) (<= v__log_~x_1103 (div v__log_~x_1104 |c__log_#in~y|)) (<= v__log_~x_1104 (div v__log_~x_1105 |c__log_#in~y|)))) (< 1 |c__log_#in~y|)) is different from false [2022-11-23 03:02:08,669 WARN L230 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2022-11-23 03:02:08,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:02:08,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825351100] [2022-11-23 03:02:08,670 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:02:08,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10103696] [2022-11-23 03:02:08,670 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-11-23 03:02:08,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2022-11-23 03:02:08,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-23 03:02:08,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-23 03:02:08,871 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:258) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:86) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:898) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:772) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:346) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:306) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:582) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 45 more [2022-11-23 03:02:08,875 INFO L158 Benchmark]: Toolchain (without parser) took 669559.32ms. Allocated memory was 142.6MB in the beginning and 423.6MB in the end (delta: 281.0MB). Free memory was 110.7MB in the beginning and 252.8MB in the end (delta: -142.1MB). Peak memory consumption was 141.7MB. Max. memory is 16.1GB. [2022-11-23 03:02:08,875 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 142.6MB. Free memory is still 87.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 03:02:08,875 INFO L158 Benchmark]: CACSL2BoogieTranslator took 315.00ms. Allocated memory is still 142.6MB. Free memory was 110.7MB in the beginning and 101.0MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 03:02:08,875 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.82ms. Allocated memory is still 142.6MB. Free memory was 101.0MB in the beginning and 99.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 03:02:08,876 INFO L158 Benchmark]: Boogie Preprocessor took 37.26ms. Allocated memory is still 142.6MB. Free memory was 99.7MB in the beginning and 98.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 03:02:08,877 INFO L158 Benchmark]: RCFGBuilder took 328.48ms. Allocated memory is still 142.6MB. Free memory was 98.6MB in the beginning and 89.0MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-23 03:02:08,878 INFO L158 Benchmark]: TraceAbstraction took 668830.57ms. Allocated memory was 142.6MB in the beginning and 423.6MB in the end (delta: 281.0MB). Free memory was 88.1MB in the beginning and 252.8MB in the end (delta: -164.7MB). Peak memory consumption was 118.6MB. Max. memory is 16.1GB. [2022-11-23 03:02:08,879 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 142.6MB. Free memory is still 87.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 315.00ms. Allocated memory is still 142.6MB. Free memory was 110.7MB in the beginning and 101.0MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.82ms. Allocated memory is still 142.6MB. Free memory was 101.0MB in the beginning and 99.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 37.26ms. Allocated memory is still 142.6MB. Free memory was 99.7MB in the beginning and 98.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 328.48ms. Allocated memory is still 142.6MB. Free memory was 98.6MB in the beginning and 89.0MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 668830.57ms. Allocated memory was 142.6MB in the beginning and 423.6MB in the end (delta: 281.0MB). Free memory was 88.1MB in the beginning and 252.8MB in the end (delta: -164.7MB). Peak memory consumption was 118.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/LogRecursive.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e724a514255a950b17f8b31ed081620ead5e2540931c6bb88a6923d310e5f391 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 03:02:11,152 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 03:02:11,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 03:02:11,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 03:02:11,198 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 03:02:11,202 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 03:02:11,205 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 03:02:11,211 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 03:02:11,213 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 03:02:11,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 03:02:11,221 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 03:02:11,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 03:02:11,223 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 03:02:11,225 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 03:02:11,227 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 03:02:11,232 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 03:02:11,235 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 03:02:11,236 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 03:02:11,238 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 03:02:11,241 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 03:02:11,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 03:02:11,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 03:02:11,250 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 03:02:11,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 03:02:11,257 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 03:02:11,260 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 03:02:11,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 03:02:11,261 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 03:02:11,262 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 03:02:11,262 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 03:02:11,263 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 03:02:11,263 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 03:02:11,264 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 03:02:11,273 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 03:02:11,274 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 03:02:11,274 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 03:02:11,275 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 03:02:11,276 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 03:02:11,276 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 03:02:11,277 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 03:02:11,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 03:02:11,283 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2022-11-23 03:02:11,322 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 03:02:11,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 03:02:11,324 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 03:02:11,324 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 03:02:11,325 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 03:02:11,325 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 03:02:11,326 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 03:02:11,327 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 03:02:11,327 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 03:02:11,327 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 03:02:11,328 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 03:02:11,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 03:02:11,329 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 03:02:11,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 03:02:11,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 03:02:11,330 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 03:02:11,330 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 03:02:11,330 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 03:02:11,330 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 03:02:11,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 03:02:11,331 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 03:02:11,331 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 03:02:11,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 03:02:11,331 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 03:02:11,332 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 03:02:11,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:02:11,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 03:02:11,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 03:02:11,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 03:02:11,333 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-23 03:02:11,333 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 03:02:11,333 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 03:02:11,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 03:02:11,334 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 03:02:11,334 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 03:02:11,335 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-23 03:02:11,335 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e724a514255a950b17f8b31ed081620ead5e2540931c6bb88a6923d310e5f391 [2022-11-23 03:02:11,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 03:02:11,756 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 03:02:11,759 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 03:02:11,760 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 03:02:11,761 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 03:02:11,763 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/termination-numeric/LogRecursive.c [2022-11-23 03:02:14,859 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 03:02:15,094 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 03:02:15,095 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/sv-benchmarks/c/termination-numeric/LogRecursive.c [2022-11-23 03:02:15,103 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/data/e620330ba/429b021b3fd54668876c23eff641e805/FLAG4f5c25273 [2022-11-23 03:02:15,130 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/data/e620330ba/429b021b3fd54668876c23eff641e805 [2022-11-23 03:02:15,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 03:02:15,138 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 03:02:15,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 03:02:15,141 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 03:02:15,145 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 03:02:15,146 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:02:15" (1/1) ... [2022-11-23 03:02:15,148 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73437dd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:15, skipping insertion in model container [2022-11-23 03:02:15,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:02:15" (1/1) ... [2022-11-23 03:02:15,156 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 03:02:15,178 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:02:15,390 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:02:15,400 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 03:02:15,421 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:02:15,435 INFO L208 MainTranslator]: Completed translation [2022-11-23 03:02:15,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:15 WrapperNode [2022-11-23 03:02:15,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 03:02:15,440 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 03:02:15,440 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 03:02:15,440 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 03:02:15,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:15" (1/1) ... [2022-11-23 03:02:15,455 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:15" (1/1) ... [2022-11-23 03:02:15,475 INFO L138 Inliner]: procedures = 6, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16 [2022-11-23 03:02:15,475 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 03:02:15,477 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 03:02:15,477 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 03:02:15,477 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 03:02:15,487 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:15" (1/1) ... [2022-11-23 03:02:15,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:15" (1/1) ... [2022-11-23 03:02:15,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:15" (1/1) ... [2022-11-23 03:02:15,492 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:15" (1/1) ... [2022-11-23 03:02:15,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:15" (1/1) ... [2022-11-23 03:02:15,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:15" (1/1) ... [2022-11-23 03:02:15,505 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:15" (1/1) ... [2022-11-23 03:02:15,506 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:15" (1/1) ... [2022-11-23 03:02:15,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 03:02:15,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 03:02:15,512 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 03:02:15,512 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 03:02:15,513 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:15" (1/1) ... [2022-11-23 03:02:15,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:02:15,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:02:15,549 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 03:02:15,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 03:02:15,598 INFO L130 BoogieDeclarations]: Found specification of procedure _log [2022-11-23 03:02:15,599 INFO L138 BoogieDeclarations]: Found implementation of procedure _log [2022-11-23 03:02:15,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 03:02:15,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 03:02:15,679 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 03:02:15,681 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 03:02:16,005 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 03:02:16,013 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 03:02:16,013 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 03:02:16,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:02:16 BoogieIcfgContainer [2022-11-23 03:02:16,023 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 03:02:16,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 03:02:16,025 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 03:02:16,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 03:02:16,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:02:15" (1/3) ... [2022-11-23 03:02:16,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55a65a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:02:16, skipping insertion in model container [2022-11-23 03:02:16,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:15" (2/3) ... [2022-11-23 03:02:16,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55a65a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:02:16, skipping insertion in model container [2022-11-23 03:02:16,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:02:16" (3/3) ... [2022-11-23 03:02:16,031 INFO L112 eAbstractionObserver]: Analyzing ICFG LogRecursive.c [2022-11-23 03:02:16,076 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 03:02:16,077 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-23 03:02:16,145 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:02:16,154 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6f2aba7e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:02:16,154 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-23 03:02:16,159 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 14 states have (on average 1.5) internal successors, (21), 18 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 03:02:16,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 03:02:16,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:02:16,169 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:02:16,169 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting _logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [_logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 03:02:16,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:02:16,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1423376646, now seen corresponding path program 1 times [2022-11-23 03:02:16,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:02:16,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2026163356] [2022-11-23 03:02:16,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:02:16,193 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 03:02:16,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:02:16,194 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 03:02:16,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-23 03:02:16,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:16,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-23 03:02:16,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:02:16,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:02:16,282 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:02:16,282 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:02:16,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2026163356] [2022-11-23 03:02:16,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2026163356] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:02:16,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:02:16,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 03:02:16,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146696071] [2022-11-23 03:02:16,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:02:16,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 03:02:16,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:02:16,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 03:02:16,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 03:02:16,322 INFO L87 Difference]: Start difference. First operand has 22 states, 14 states have (on average 1.5) internal successors, (21), 18 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 1 states have (on average 7.0) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:02:16,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:02:16,342 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2022-11-23 03:02:16,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 03:02:16,344 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 7.0) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-23 03:02:16,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:02:16,352 INFO L225 Difference]: With dead ends: 22 [2022-11-23 03:02:16,352 INFO L226 Difference]: Without dead ends: 16 [2022-11-23 03:02:16,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 03:02:16,362 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:02:16,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:02:16,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-23 03:02:16,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-11-23 03:02:16,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 13 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 03:02:16,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-11-23 03:02:16,400 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 8 [2022-11-23 03:02:16,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:02:16,400 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-11-23 03:02:16,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 7.0) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:02:16,401 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-11-23 03:02:16,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 03:02:16,401 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:02:16,402 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:02:16,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-23 03:02:16,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 03:02:16,603 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [_logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 03:02:16,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:02:16,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1175003103, now seen corresponding path program 1 times [2022-11-23 03:02:16,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:02:16,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [961318824] [2022-11-23 03:02:16,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:02:16,605 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 03:02:16,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:02:16,607 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 03:02:16,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-23 03:02:16,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:16,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 03:02:16,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:02:16,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:02:16,946 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:02:16,947 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:02:16,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [961318824] [2022-11-23 03:02:16,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [961318824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:02:16,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:02:16,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 03:02:16,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698275691] [2022-11-23 03:02:16,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:02:16,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:02:16,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:02:16,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:02:16,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:02:16,950 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:02:17,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:02:17,166 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2022-11-23 03:02:17,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 03:02:17,171 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-23 03:02:17,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:02:17,173 INFO L225 Difference]: With dead ends: 18 [2022-11-23 03:02:17,173 INFO L226 Difference]: Without dead ends: 17 [2022-11-23 03:02:17,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-23 03:02:17,175 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 19 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 03:02:17,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 30 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 03:02:17,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-23 03:02:17,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-23 03:02:17,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 03:02:17,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2022-11-23 03:02:17,186 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 9 [2022-11-23 03:02:17,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:02:17,188 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2022-11-23 03:02:17,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:02:17,193 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-11-23 03:02:17,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-23 03:02:17,194 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:02:17,194 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:02:17,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-11-23 03:02:17,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 03:02:17,408 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting _logErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [_logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 03:02:17,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:02:17,409 INFO L85 PathProgramCache]: Analyzing trace with hash 2057637021, now seen corresponding path program 1 times [2022-11-23 03:02:17,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:02:17,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [160767614] [2022-11-23 03:02:17,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:02:17,410 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 03:02:17,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:02:17,414 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 03:02:17,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-23 03:02:17,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:17,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 03:02:17,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:02:17,675 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 03:02:17,675 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:02:17,676 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:02:17,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [160767614] [2022-11-23 03:02:17,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [160767614] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:02:17,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:02:17,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:02:17,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614157596] [2022-11-23 03:02:17,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:02:17,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:02:17,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:02:17,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:02:17,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:02:17,679 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 03:02:17,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:02:17,725 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2022-11-23 03:02:17,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 03:02:17,726 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-11-23 03:02:17,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:02:17,727 INFO L225 Difference]: With dead ends: 20 [2022-11-23 03:02:17,727 INFO L226 Difference]: Without dead ends: 19 [2022-11-23 03:02:17,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:02:17,729 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:02:17,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:02:17,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-23 03:02:17,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-23 03:02:17,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 03:02:17,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-11-23 03:02:17,736 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2022-11-23 03:02:17,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:02:17,736 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-11-23 03:02:17,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 03:02:17,737 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-11-23 03:02:17,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-23 03:02:17,738 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:02:17,738 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:02:17,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-23 03:02:17,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 03:02:17,950 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting _logErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [_logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 03:02:17,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:02:17,951 INFO L85 PathProgramCache]: Analyzing trace with hash 466870137, now seen corresponding path program 1 times [2022-11-23 03:02:17,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:02:17,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [533717015] [2022-11-23 03:02:17,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:02:17,952 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 03:02:17,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:02:17,953 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 03:02:17,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-23 03:02:18,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:18,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 03:02:18,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:02:18,357 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-23 03:02:18,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:02:18,611 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-23 03:02:18,611 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:02:18,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [533717015] [2022-11-23 03:02:18,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [533717015] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:02:18,612 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:02:18,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-11-23 03:02:18,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12959083] [2022-11-23 03:02:18,612 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:02:18,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 03:02:18,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:02:18,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 03:02:18,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-23 03:02:18,614 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 03:02:18,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:02:18,864 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-11-23 03:02:18,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 03:02:18,865 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) Word has length 30 [2022-11-23 03:02:18,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:02:18,866 INFO L225 Difference]: With dead ends: 32 [2022-11-23 03:02:18,866 INFO L226 Difference]: Without dead ends: 31 [2022-11-23 03:02:18,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-11-23 03:02:18,868 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 03:02:18,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 03:02:18,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-23 03:02:18,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-23 03:02:18,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 24 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-23 03:02:18,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2022-11-23 03:02:18,876 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 30 [2022-11-23 03:02:18,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:02:18,877 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2022-11-23 03:02:18,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 03:02:18,877 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2022-11-23 03:02:18,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-23 03:02:18,879 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:02:18,879 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:02:18,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-23 03:02:19,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 03:02:19,102 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting _logErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [_logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 03:02:19,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:02:19,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1866174069, now seen corresponding path program 2 times [2022-11-23 03:02:19,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:02:19,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [390594279] [2022-11-23 03:02:19,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 03:02:19,104 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 03:02:19,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:02:19,106 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 03:02:19,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-23 03:02:19,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 03:02:19,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:02:19,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-23 03:02:19,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:02:19,885 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-23 03:02:19,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:02:20,796 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-23 03:02:20,796 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:02:20,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [390594279] [2022-11-23 03:02:20,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [390594279] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:02:20,797 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:02:20,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2022-11-23 03:02:20,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904130729] [2022-11-23 03:02:20,797 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:02:20,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-23 03:02:20,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:02:20,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-23 03:02:20,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2022-11-23 03:02:20,799 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 22 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 22 states have internal predecessors, (40), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-23 03:02:22,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:02:22,246 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2022-11-23 03:02:22,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-23 03:02:22,246 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 22 states have internal predecessors, (40), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) Word has length 57 [2022-11-23 03:02:22,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:02:22,248 INFO L225 Difference]: With dead ends: 56 [2022-11-23 03:02:22,248 INFO L226 Difference]: Without dead ends: 55 [2022-11-23 03:02:22,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=199, Invalid=731, Unknown=0, NotChecked=0, Total=930 [2022-11-23 03:02:22,250 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 03:02:22,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 210 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 03:02:22,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-11-23 03:02:22,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-11-23 03:02:22,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 41 states have (on average 1.048780487804878) internal successors, (43), 42 states have internal predecessors, (43), 2 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-23 03:02:22,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2022-11-23 03:02:22,259 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 57 [2022-11-23 03:02:22,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:02:22,260 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2022-11-23 03:02:22,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 22 states have internal predecessors, (40), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-23 03:02:22,260 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2022-11-23 03:02:22,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-23 03:02:22,263 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:02:22,263 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:02:22,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-23 03:02:22,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 03:02:22,470 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting _logErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [_logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 03:02:22,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:02:22,471 INFO L85 PathProgramCache]: Analyzing trace with hash -100073921, now seen corresponding path program 3 times [2022-11-23 03:02:22,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:02:22,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [959441688] [2022-11-23 03:02:22,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 03:02:22,472 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 03:02:22,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:02:22,473 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 03:02:22,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-23 03:02:24,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-11-23 03:02:24,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:02:24,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-23 03:02:24,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:02:25,464 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 0 proven. 220 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2022-11-23 03:02:25,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:02:28,911 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 0 proven. 220 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2022-11-23 03:02:28,912 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:02:28,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [959441688] [2022-11-23 03:02:28,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [959441688] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:02:28,912 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:02:28,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 45 [2022-11-23 03:02:28,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140561740] [2022-11-23 03:02:28,913 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:02:28,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-23 03:02:28,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:02:28,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-23 03:02:28,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=1739, Unknown=0, NotChecked=0, Total=2070 [2022-11-23 03:02:28,916 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand has 46 states, 45 states have (on average 1.6888888888888889) internal successors, (76), 46 states have internal predecessors, (76), 1 states have call successors, (2), 1 states have call predecessors, (2), 22 states have return successors, (22), 22 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-23 03:02:36,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:02:36,899 INFO L93 Difference]: Finished difference Result 104 states and 116 transitions. [2022-11-23 03:02:36,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-23 03:02:36,900 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 1.6888888888888889) internal successors, (76), 46 states have internal predecessors, (76), 1 states have call successors, (2), 1 states have call predecessors, (2), 22 states have return successors, (22), 22 states have call predecessors, (22), 1 states have call successors, (22) Word has length 106 [2022-11-23 03:02:36,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:02:36,902 INFO L225 Difference]: With dead ends: 104 [2022-11-23 03:02:36,902 INFO L226 Difference]: Without dead ends: 103 [2022-11-23 03:02:36,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=835, Invalid=3587, Unknown=0, NotChecked=0, Total=4422 [2022-11-23 03:02:36,906 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:02:36,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 607 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-23 03:02:36,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-23 03:02:36,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2022-11-23 03:02:36,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 77 states have (on average 1.025974025974026) internal successors, (79), 78 states have internal predecessors, (79), 2 states have call successors, (2), 1 states have call predecessors, (2), 23 states have return successors, (23), 23 states have call predecessors, (23), 1 states have call successors, (23) [2022-11-23 03:02:36,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2022-11-23 03:02:36,920 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 106 [2022-11-23 03:02:36,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:02:36,920 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2022-11-23 03:02:36,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 1.6888888888888889) internal successors, (76), 46 states have internal predecessors, (76), 1 states have call successors, (2), 1 states have call predecessors, (2), 22 states have return successors, (22), 22 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-23 03:02:36,921 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2022-11-23 03:02:36,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-11-23 03:02:36,925 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:02:36,925 INFO L195 NwaCegarLoop]: trace histogram [25, 24, 24, 24, 24, 23, 23, 23, 22, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:02:36,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-23 03:02:37,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 03:02:37,151 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting _logErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [_logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 03:02:37,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:02:37,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1590357185, now seen corresponding path program 4 times [2022-11-23 03:02:37,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:02:37,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1467398944] [2022-11-23 03:02:37,152 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 03:02:37,152 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 03:02:37,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:02:37,154 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 03:02:37,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-23 03:02:38,958 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 03:02:38,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:02:39,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-23 03:02:39,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:02:40,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2440 backedges. 0 proven. 1012 refuted. 0 times theorem prover too weak. 1428 trivial. 0 not checked. [2022-11-23 03:02:40,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:02:54,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2440 backedges. 0 proven. 1012 refuted. 0 times theorem prover too weak. 1428 trivial. 0 not checked. [2022-11-23 03:02:54,240 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:02:54,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1467398944] [2022-11-23 03:02:54,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1467398944] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:02:54,241 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:02:54,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 93 [2022-11-23 03:02:54,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279988882] [2022-11-23 03:02:54,241 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:02:54,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-11-23 03:02:54,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:02:54,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-11-23 03:02:54,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1243, Invalid=7499, Unknown=0, NotChecked=0, Total=8742 [2022-11-23 03:02:54,252 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand has 94 states, 93 states have (on average 1.5913978494623655) internal successors, (148), 94 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 46 states have return successors, (46), 46 states have call predecessors, (46), 1 states have call successors, (46) [2022-11-23 03:03:46,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:03:46,991 INFO L93 Difference]: Finished difference Result 200 states and 224 transitions. [2022-11-23 03:03:46,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-11-23 03:03:46,992 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 1.5913978494623655) internal successors, (148), 94 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 46 states have return successors, (46), 46 states have call predecessors, (46), 1 states have call successors, (46) Word has length 219 [2022-11-23 03:03:46,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:03:47,002 INFO L225 Difference]: With dead ends: 200 [2022-11-23 03:03:47,007 INFO L226 Difference]: Without dead ends: 199 [2022-11-23 03:03:47,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1519 ImplicationChecksByTransitivity, 54.8s TimeCoverageRelationStatistics Valid=3403, Invalid=15779, Unknown=0, NotChecked=0, Total=19182 [2022-11-23 03:03:47,015 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 0 mSDsluCounter, 1565 mSDsCounter, 0 mSdLazyCounter, 3251 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1623 SdHoareTripleChecker+Invalid, 3318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-23 03:03:47,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1623 Invalid, 3318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3251 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-11-23 03:03:47,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-11-23 03:03:47,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2022-11-23 03:03:47,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 149 states have (on average 1.0134228187919463) internal successors, (151), 150 states have internal predecessors, (151), 2 states have call successors, (2), 1 states have call predecessors, (2), 47 states have return successors, (47), 47 states have call predecessors, (47), 1 states have call successors, (47) [2022-11-23 03:03:47,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 200 transitions. [2022-11-23 03:03:47,046 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 200 transitions. Word has length 219 [2022-11-23 03:03:47,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:03:47,047 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 200 transitions. [2022-11-23 03:03:47,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 1.5913978494623655) internal successors, (148), 94 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 46 states have return successors, (46), 46 states have call predecessors, (46), 1 states have call successors, (46) [2022-11-23 03:03:47,047 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 200 transitions. [2022-11-23 03:03:47,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-11-23 03:03:47,062 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:03:47,063 INFO L195 NwaCegarLoop]: trace histogram [48, 47, 47, 47, 47, 47, 47, 47, 46, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:03:47,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-23 03:03:47,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 03:03:47,286 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting _logErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [_logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 03:03:47,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:03:47,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1693520855, now seen corresponding path program 5 times [2022-11-23 03:03:47,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:03:47,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [877253481] [2022-11-23 03:03:47,288 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-23 03:03:47,288 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 03:03:47,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:03:47,289 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 03:03:47,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce04043-a7af-483e-8d1d-cf3b6eb5327c/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-23 03:04:34,924 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2022-11-23 03:04:34,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:04:35,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 156 conjunts are in the unsatisfiable core [2022-11-23 03:04:35,287 INFO L286 TraceCheckSpWp]: Computing forward predicates...