./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/list-simple/dll2n_remove_all_reverse.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f69ccca-72f5-458c-9110-0d9ec5398c36/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f69ccca-72f5-458c-9110-0d9ec5398c36/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_6f69ccca-72f5-458c-9110-0d9ec5398c36/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f69ccca-72f5-458c-9110-0d9ec5398c36/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_remove_all_reverse.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f69ccca-72f5-458c-9110-0d9ec5398c36/bin/uautomizer-QkZJyEgLgS/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f69ccca-72f5-458c-9110-0d9ec5398c36/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 32bit --witnessprinter.graph.data.programhash 4d5c55d9a4a2ded389ff7ce077afdc88fb2d2855921e5fd1e3b93fbba7e140e8 --- 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 02:26:08,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 02:26:08,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 02:26:08,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 02:26:08,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 02:26:08,505 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 02:26:08,508 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 02:26:08,512 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 02:26:08,514 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 02:26:08,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 02:26:08,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 02:26:08,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 02:26:08,526 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 02:26:08,529 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 02:26:08,531 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 02:26:08,534 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 02:26:08,536 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 02:26:08,537 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 02:26:08,539 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 02:26:08,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 02:26:08,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 02:26:08,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 02:26:08,554 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 02:26:08,555 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 02:26:08,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 02:26:08,565 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 02:26:08,566 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 02:26:08,568 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 02:26:08,569 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 02:26:08,570 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 02:26:08,570 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 02:26:08,571 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 02:26:08,572 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 02:26:08,573 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 02:26:08,575 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 02:26:08,575 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 02:26:08,576 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 02:26:08,576 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 02:26:08,577 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 02:26:08,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 02:26:08,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 02:26:08,580 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f69ccca-72f5-458c-9110-0d9ec5398c36/bin/uautomizer-QkZJyEgLgS/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-23 02:26:08,616 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 02:26:08,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 02:26:08,619 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 02:26:08,619 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 02:26:08,620 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 02:26:08,621 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 02:26:08,622 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 02:26:08,622 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 02:26:08,622 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 02:26:08,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 02:26:08,624 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 02:26:08,624 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 02:26:08,625 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 02:26:08,625 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 02:26:08,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 02:26:08,626 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 02:26:08,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 02:26:08,626 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 02:26:08,627 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 02:26:08,627 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 02:26:08,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 02:26:08,627 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 02:26:08,628 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 02:26:08,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 02:26:08,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 02:26:08,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 02:26:08,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:26:08,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 02:26:08,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 02:26:08,630 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 02:26:08,630 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 02:26:08,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 02:26:08,631 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 02:26:08,632 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 02:26:08,632 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 02:26:08,632 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 02:26:08,632 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_6f69ccca-72f5-458c-9110-0d9ec5398c36/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f69ccca-72f5-458c-9110-0d9ec5398c36/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d5c55d9a4a2ded389ff7ce077afdc88fb2d2855921e5fd1e3b93fbba7e140e8 [2022-11-23 02:26:09,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 02:26:09,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 02:26:09,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 02:26:09,060 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 02:26:09,061 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 02:26:09,062 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f69ccca-72f5-458c-9110-0d9ec5398c36/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/list-simple/dll2n_remove_all_reverse.i [2022-11-23 02:26:12,739 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 02:26:13,097 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 02:26:13,101 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f69ccca-72f5-458c-9110-0d9ec5398c36/sv-benchmarks/c/list-simple/dll2n_remove_all_reverse.i [2022-11-23 02:26:13,118 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f69ccca-72f5-458c-9110-0d9ec5398c36/bin/uautomizer-QkZJyEgLgS/data/3492eff37/203cc2c461184bae9e1b2b30f1a00e95/FLAG8c61a3c3b [2022-11-23 02:26:13,141 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f69ccca-72f5-458c-9110-0d9ec5398c36/bin/uautomizer-QkZJyEgLgS/data/3492eff37/203cc2c461184bae9e1b2b30f1a00e95 [2022-11-23 02:26:13,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 02:26:13,150 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 02:26:13,154 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 02:26:13,154 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 02:26:13,159 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 02:26:13,160 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:26:13" (1/1) ... [2022-11-23 02:26:13,161 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43abe62f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:13, skipping insertion in model container [2022-11-23 02:26:13,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:26:13" (1/1) ... [2022-11-23 02:26:13,172 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 02:26:13,230 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 02:26:13,571 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f69ccca-72f5-458c-9110-0d9ec5398c36/sv-benchmarks/c/list-simple/dll2n_remove_all_reverse.i[24275,24288] [2022-11-23 02:26:13,572 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:26:13,584 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 02:26:13,637 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f69ccca-72f5-458c-9110-0d9ec5398c36/sv-benchmarks/c/list-simple/dll2n_remove_all_reverse.i[24275,24288] [2022-11-23 02:26:13,638 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:26:13,672 INFO L208 MainTranslator]: Completed translation [2022-11-23 02:26:13,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:13 WrapperNode [2022-11-23 02:26:13,673 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 02:26:13,674 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 02:26:13,675 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 02:26:13,675 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 02:26:13,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:13" (1/1) ... [2022-11-23 02:26:13,701 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:13" (1/1) ... [2022-11-23 02:26:13,728 INFO L138 Inliner]: procedures = 126, calls = 35, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 101 [2022-11-23 02:26:13,729 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 02:26:13,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 02:26:13,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 02:26:13,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 02:26:13,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:13" (1/1) ... [2022-11-23 02:26:13,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:13" (1/1) ... [2022-11-23 02:26:13,746 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:13" (1/1) ... [2022-11-23 02:26:13,746 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:13" (1/1) ... [2022-11-23 02:26:13,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:13" (1/1) ... [2022-11-23 02:26:13,760 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:13" (1/1) ... [2022-11-23 02:26:13,761 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:13" (1/1) ... [2022-11-23 02:26:13,763 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:13" (1/1) ... [2022-11-23 02:26:13,766 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 02:26:13,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 02:26:13,768 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 02:26:13,768 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 02:26:13,769 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:13" (1/1) ... [2022-11-23 02:26:13,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:26:13,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f69ccca-72f5-458c-9110-0d9ec5398c36/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:26:13,825 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f69ccca-72f5-458c-9110-0d9ec5398c36/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 02:26:13,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f69ccca-72f5-458c-9110-0d9ec5398c36/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 02:26:13,887 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2022-11-23 02:26:13,888 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2022-11-23 02:26:13,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 02:26:13,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 02:26:13,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 02:26:13,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 02:26:13,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 02:26:13,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 02:26:13,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 02:26:13,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 02:26:13,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 02:26:13,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 02:26:13,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 02:26:14,175 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 02:26:14,177 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 02:26:14,223 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2022-11-23 02:26:14,420 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 02:26:14,429 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 02:26:14,429 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-23 02:26:14,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:26:14 BoogieIcfgContainer [2022-11-23 02:26:14,437 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 02:26:14,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 02:26:14,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 02:26:14,447 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 02:26:14,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:26:13" (1/3) ... [2022-11-23 02:26:14,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28a22731 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:26:14, skipping insertion in model container [2022-11-23 02:26:14,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:13" (2/3) ... [2022-11-23 02:26:14,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28a22731 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:26:14, skipping insertion in model container [2022-11-23 02:26:14,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:26:14" (3/3) ... [2022-11-23 02:26:14,455 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2n_remove_all_reverse.i [2022-11-23 02:26:14,484 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 02:26:14,485 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-23 02:26:14,546 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:26:14,554 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;@6221a777, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:26:14,554 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-23 02:26:14,559 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 29 states have (on average 1.5517241379310345) internal successors, (45), 35 states have internal predecessors, (45), 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 02:26:14,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 02:26:14,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:26:14,570 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 02:26:14,571 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 02:26:14,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:26:14,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1038255142, now seen corresponding path program 1 times [2022-11-23 02:26:14,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:26:14,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949689703] [2022-11-23 02:26:14,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:26:14,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:26:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:26:14,789 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 02:26:14,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:26:14,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949689703] [2022-11-23 02:26:14,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949689703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:26:14,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:26:14,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:26:14,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044732816] [2022-11-23 02:26:14,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:26:14,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 02:26:14,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:26:14,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 02:26:14,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 02:26:14,844 INFO L87 Difference]: Start difference. First operand has 37 states, 29 states have (on average 1.5517241379310345) internal successors, (45), 35 states have internal predecessors, (45), 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:14,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:26:14,878 INFO L93 Difference]: Finished difference Result 60 states and 74 transitions. [2022-11-23 02:26:14,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 02:26:14,882 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-23 02:26:14,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:26:14,891 INFO L225 Difference]: With dead ends: 60 [2022-11-23 02:26:14,892 INFO L226 Difference]: Without dead ends: 28 [2022-11-23 02:26:14,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 02:26:14,904 INFO L413 NwaCegarLoop]: 42 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, 42 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 02:26:14,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:26:14,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-23 02:26:14,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-11-23 02:26:14,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:14,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-11-23 02:26:14,958 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 6 [2022-11-23 02:26:14,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:26:14,959 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-11-23 02:26:14,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:14,961 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-11-23 02:26:14,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 02:26:14,962 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:26:14,962 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 02:26:14,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 02:26:14,964 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 02:26:14,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:26:14,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1037569949, now seen corresponding path program 1 times [2022-11-23 02:26:14,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:26:14,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041329114] [2022-11-23 02:26:14,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:26:14,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:26:15,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:26:15,170 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 02:26:15,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:26:15,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041329114] [2022-11-23 02:26:15,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041329114] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:26:15,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:26:15,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:26:15,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424109082] [2022-11-23 02:26:15,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:26:15,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:26:15,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:26:15,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:26:15,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:26:15,176 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:15,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:26:15,201 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2022-11-23 02:26:15,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:26:15,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-23 02:26:15,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:26:15,203 INFO L225 Difference]: With dead ends: 54 [2022-11-23 02:26:15,203 INFO L226 Difference]: Without dead ends: 37 [2022-11-23 02:26:15,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:26:15,205 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 9 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:26:15,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 57 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:26:15,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-23 02:26:15,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 29. [2022-11-23 02:26:15,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.434782608695652) internal successors, (33), 28 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:15,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2022-11-23 02:26:15,213 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 6 [2022-11-23 02:26:15,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:26:15,214 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2022-11-23 02:26:15,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:15,215 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2022-11-23 02:26:15,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 02:26:15,215 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:26:15,216 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:26:15,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 02:26:15,216 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 02:26:15,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:26:15,217 INFO L85 PathProgramCache]: Analyzing trace with hash 713346893, now seen corresponding path program 1 times [2022-11-23 02:26:15,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:26:15,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552793964] [2022-11-23 02:26:15,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:26:15,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:26:15,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:26:15,395 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 02:26:15,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:26:15,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552793964] [2022-11-23 02:26:15,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552793964] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:26:15,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:26:15,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:26:15,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350022113] [2022-11-23 02:26:15,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:26:15,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:26:15,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:26:15,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:26:15,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:26:15,399 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:15,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:26:15,442 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2022-11-23 02:26:15,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:26:15,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-23 02:26:15,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:26:15,444 INFO L225 Difference]: With dead ends: 59 [2022-11-23 02:26:15,444 INFO L226 Difference]: Without dead ends: 33 [2022-11-23 02:26:15,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:26:15,451 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 1 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:26:15,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 56 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:26:15,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-23 02:26:15,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2022-11-23 02:26:15,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:15,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-11-23 02:26:15,464 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 8 [2022-11-23 02:26:15,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:26:15,465 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-11-23 02:26:15,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:15,467 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-11-23 02:26:15,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 02:26:15,468 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:26:15,468 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:26:15,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 02:26:15,469 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 02:26:15,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:26:15,475 INFO L85 PathProgramCache]: Analyzing trace with hash 713348815, now seen corresponding path program 1 times [2022-11-23 02:26:15,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:26:15,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026872896] [2022-11-23 02:26:15,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:26:15,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:26:15,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:26:15,666 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 02:26:15,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:26:15,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026872896] [2022-11-23 02:26:15,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026872896] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:26:15,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:26:15,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:26:15,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030363249] [2022-11-23 02:26:15,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:26:15,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:26:15,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:26:15,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:26:15,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:26:15,670 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:15,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:26:15,713 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2022-11-23 02:26:15,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:26:15,714 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-23 02:26:15,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:26:15,715 INFO L225 Difference]: With dead ends: 37 [2022-11-23 02:26:15,715 INFO L226 Difference]: Without dead ends: 36 [2022-11-23 02:26:15,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:26:15,717 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 5 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:26:15,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 79 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:26:15,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-23 02:26:15,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2022-11-23 02:26:15,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 33 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:15,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2022-11-23 02:26:15,724 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 8 [2022-11-23 02:26:15,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:26:15,725 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2022-11-23 02:26:15,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:15,725 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2022-11-23 02:26:15,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 02:26:15,726 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:26:15,726 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:26:15,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 02:26:15,727 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 02:26:15,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:26:15,728 INFO L85 PathProgramCache]: Analyzing trace with hash 638976850, now seen corresponding path program 1 times [2022-11-23 02:26:15,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:26:15,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551518744] [2022-11-23 02:26:15,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:26:15,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:26:15,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:26:15,860 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 02:26:15,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:26:15,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551518744] [2022-11-23 02:26:15,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551518744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:26:15,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:26:15,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:26:15,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453068768] [2022-11-23 02:26:15,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:26:15,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:26:15,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:26:15,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:26:15,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:26:15,867 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:15,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:26:15,930 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2022-11-23 02:26:15,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:26:15,931 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-23 02:26:15,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:26:15,932 INFO L225 Difference]: With dead ends: 36 [2022-11-23 02:26:15,933 INFO L226 Difference]: Without dead ends: 35 [2022-11-23 02:26:15,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:26:15,935 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:26:15,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 80 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:26:15,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-23 02:26:15,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-11-23 02:26:15,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:15,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2022-11-23 02:26:15,952 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 9 [2022-11-23 02:26:15,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:26:15,953 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2022-11-23 02:26:15,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:15,954 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2022-11-23 02:26:15,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-23 02:26:15,954 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:26:15,955 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:26:15,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 02:26:15,958 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 02:26:15,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:26:15,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1509234317, now seen corresponding path program 1 times [2022-11-23 02:26:15,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:26:15,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072297022] [2022-11-23 02:26:15,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:26:15,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:26:15,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:26:16,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:26:16,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:26:16,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072297022] [2022-11-23 02:26:16,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072297022] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:26:16,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602730992] [2022-11-23 02:26:16,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:26:16,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:26:16,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f69ccca-72f5-458c-9110-0d9ec5398c36/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:26:16,131 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f69ccca-72f5-458c-9110-0d9ec5398c36/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:26:16,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f69ccca-72f5-458c-9110-0d9ec5398c36/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 02:26:16,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:26:16,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 02:26:16,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:26:16,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 02:26:16,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:26:16,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602730992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:26:16,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:26:16,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 3 [2022-11-23 02:26:16,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118239132] [2022-11-23 02:26:16,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:26:16,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:26:16,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:26:16,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:26:16,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:26:16,444 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:16,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:26:16,462 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2022-11-23 02:26:16,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:26:16,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-23 02:26:16,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:26:16,465 INFO L225 Difference]: With dead ends: 35 [2022-11-23 02:26:16,466 INFO L226 Difference]: Without dead ends: 34 [2022-11-23 02:26:16,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:26:16,477 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 19 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:26:16,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 29 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:26:16,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-23 02:26:16,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-23 02:26:16,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 33 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:16,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2022-11-23 02:26:16,483 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 13 [2022-11-23 02:26:16,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:26:16,484 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2022-11-23 02:26:16,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:16,484 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2022-11-23 02:26:16,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-23 02:26:16,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:26:16,485 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:26:16,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f69ccca-72f5-458c-9110-0d9ec5398c36/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 02:26:16,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f69ccca-72f5-458c-9110-0d9ec5398c36/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:26:16,700 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 02:26:16,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:26:16,701 INFO L85 PathProgramCache]: Analyzing trace with hash -458376354, now seen corresponding path program 1 times [2022-11-23 02:26:16,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:26:16,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551481053] [2022-11-23 02:26:16,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:26:16,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:26:16,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:26:16,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:26:16,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:26:16,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551481053] [2022-11-23 02:26:16,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551481053] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:26:16,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647132904] [2022-11-23 02:26:16,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:26:16,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:26:16,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f69ccca-72f5-458c-9110-0d9ec5398c36/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:26:16,795 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f69ccca-72f5-458c-9110-0d9ec5398c36/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:26:16,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f69ccca-72f5-458c-9110-0d9ec5398c36/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 02:26:16,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:26:16,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 02:26:16,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:26:16,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 02:26:16,967 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:26:16,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647132904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:26:16,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:26:16,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 3 [2022-11-23 02:26:16,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185837224] [2022-11-23 02:26:16,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:26:16,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:26:16,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:26:16,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:26:16,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:26:16,971 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:16,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:26:16,979 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2022-11-23 02:26:16,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:26:16,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-23 02:26:16,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:26:16,987 INFO L225 Difference]: With dead ends: 34 [2022-11-23 02:26:16,987 INFO L226 Difference]: Without dead ends: 33 [2022-11-23 02:26:16,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:26:16,988 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 17 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:26:16,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 29 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:26:16,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-23 02:26:16,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-23 02:26:16,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:16,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2022-11-23 02:26:16,994 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 14 [2022-11-23 02:26:16,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:26:16,995 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2022-11-23 02:26:16,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:16,995 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2022-11-23 02:26:16,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-23 02:26:16,996 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:26:16,996 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:26:17,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f69ccca-72f5-458c-9110-0d9ec5398c36/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 02:26:17,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f69ccca-72f5-458c-9110-0d9ec5398c36/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:26:17,207 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 02:26:17,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:26:17,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1283728835, now seen corresponding path program 1 times [2022-11-23 02:26:17,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:26:17,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945928768] [2022-11-23 02:26:17,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:26:17,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:26:17,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:26:17,338 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 02:26:17,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:26:17,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945928768] [2022-11-23 02:26:17,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945928768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:26:17,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:26:17,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:26:17,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978078323] [2022-11-23 02:26:17,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:26:17,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:26:17,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:26:17,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:26:17,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:26:17,342 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:17,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:26:17,380 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2022-11-23 02:26:17,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:26:17,381 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-23 02:26:17,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:26:17,382 INFO L225 Difference]: With dead ends: 33 [2022-11-23 02:26:17,382 INFO L226 Difference]: Without dead ends: 32 [2022-11-23 02:26:17,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:26:17,384 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:26:17,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 65 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:26:17,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-23 02:26:17,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-11-23 02:26:17,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:17,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-11-23 02:26:17,402 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 15 [2022-11-23 02:26:17,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:26:17,403 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-11-23 02:26:17,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:17,403 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-11-23 02:26:17,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 02:26:17,404 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:26:17,404 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-23 02:26:17,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 02:26:17,405 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 02:26:17,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:26:17,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1140888156, now seen corresponding path program 1 times [2022-11-23 02:26:17,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:26:17,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771972324] [2022-11-23 02:26:17,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:26:17,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:26:17,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:26:17,564 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:26:17,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:26:17,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771972324] [2022-11-23 02:26:17,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771972324] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:26:17,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12812235] [2022-11-23 02:26:17,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:26:17,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:26:17,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f69ccca-72f5-458c-9110-0d9ec5398c36/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:26:17,567 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f69ccca-72f5-458c-9110-0d9ec5398c36/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:26:17,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f69ccca-72f5-458c-9110-0d9ec5398c36/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 02:26:17,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:26:17,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 02:26:17,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:26:17,813 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:26:17,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:26:17,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12812235] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:26:17,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:26:17,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2022-11-23 02:26:17,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564515186] [2022-11-23 02:26:17,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:26:17,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:26:17,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:26:17,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:26:17,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:26:17,822 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:17,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:26:17,874 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2022-11-23 02:26:17,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:26:17,875 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-23 02:26:17,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:26:17,876 INFO L225 Difference]: With dead ends: 32 [2022-11-23 02:26:17,876 INFO L226 Difference]: Without dead ends: 31 [2022-11-23 02:26:17,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:26:17,877 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 42 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:26:17,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 55 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:26:17,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-23 02:26:17,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2022-11-23 02:26:17,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:17,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-11-23 02:26:17,883 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2022-11-23 02:26:17,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:26:17,883 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-11-23 02:26:17,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:17,884 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-11-23 02:26:17,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-23 02:26:17,884 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:26:17,885 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:26:17,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f69ccca-72f5-458c-9110-0d9ec5398c36/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-23 02:26:18,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f69ccca-72f5-458c-9110-0d9ec5398c36/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-23 02:26:18,086 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 02:26:18,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:26:18,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1093600823, now seen corresponding path program 1 times [2022-11-23 02:26:18,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:26:18,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280459285] [2022-11-23 02:26:18,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:26:18,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:26:18,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:26:18,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 02:26:18,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:26:18,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280459285] [2022-11-23 02:26:18,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280459285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:26:18,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:26:18,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:26:18,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369633109] [2022-11-23 02:26:18,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:26:18,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:26:18,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:26:18,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:26:18,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:26:18,156 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:18,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:26:18,181 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2022-11-23 02:26:18,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:26:18,182 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-23 02:26:18,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:26:18,183 INFO L225 Difference]: With dead ends: 28 [2022-11-23 02:26:18,183 INFO L226 Difference]: Without dead ends: 27 [2022-11-23 02:26:18,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:26:18,184 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 10 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:26:18,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 57 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:26:18,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-23 02:26:18,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-23 02:26:18,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:18,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2022-11-23 02:26:18,190 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 19 [2022-11-23 02:26:18,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:26:18,191 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2022-11-23 02:26:18,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:18,191 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-11-23 02:26:18,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-23 02:26:18,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:26:18,192 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:26:18,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 02:26:18,193 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 02:26:18,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:26:18,194 INFO L85 PathProgramCache]: Analyzing trace with hash 458112965, now seen corresponding path program 1 times [2022-11-23 02:26:18,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:26:18,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639478795] [2022-11-23 02:26:18,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:26:18,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:26:18,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:26:18,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:26:18,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:26:18,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639478795] [2022-11-23 02:26:18,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639478795] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:26:18,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028316631] [2022-11-23 02:26:18,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:26:18,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:26:18,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f69ccca-72f5-458c-9110-0d9ec5398c36/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:26:18,315 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f69ccca-72f5-458c-9110-0d9ec5398c36/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:26:18,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f69ccca-72f5-458c-9110-0d9ec5398c36/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 02:26:18,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:26:18,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 02:26:18,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:26:18,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:26:18,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:26:18,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:26:18,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028316631] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:26:18,547 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:26:18,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-11-23 02:26:18,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063782667] [2022-11-23 02:26:18,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:26:18,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:26:18,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:26:18,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:26:18,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:26:18,549 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:18,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:26:18,580 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2022-11-23 02:26:18,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:26:18,580 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-23 02:26:18,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:26:18,583 INFO L225 Difference]: With dead ends: 45 [2022-11-23 02:26:18,583 INFO L226 Difference]: Without dead ends: 31 [2022-11-23 02:26:18,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:26:18,585 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 17 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:26:18,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 67 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:26:18,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-23 02:26:18,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-23 02:26:18,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 30 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:18,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2022-11-23 02:26:18,598 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 20 [2022-11-23 02:26:18,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:26:18,598 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2022-11-23 02:26:18,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:18,599 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2022-11-23 02:26:18,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-23 02:26:18,600 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:26:18,600 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:26:18,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f69ccca-72f5-458c-9110-0d9ec5398c36/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 02:26:18,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f69ccca-72f5-458c-9110-0d9ec5398c36/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-23 02:26:18,807 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 02:26:18,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:26:18,808 INFO L85 PathProgramCache]: Analyzing trace with hash -282751437, now seen corresponding path program 1 times [2022-11-23 02:26:18,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:26:18,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253387973] [2022-11-23 02:26:18,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:26:18,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:26:18,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:26:19,029 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-23 02:26:19,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:26:19,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253387973] [2022-11-23 02:26:19,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253387973] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:26:19,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841999868] [2022-11-23 02:26:19,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:26:19,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:26:19,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f69ccca-72f5-458c-9110-0d9ec5398c36/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:26:19,032 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f69ccca-72f5-458c-9110-0d9ec5398c36/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:26:19,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f69ccca-72f5-458c-9110-0d9ec5398c36/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 02:26:19,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:26:19,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 02:26:19,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:26:19,255 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 02:26:19,255 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:26:19,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841999868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:26:19,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:26:19,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-11-23 02:26:19,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814463373] [2022-11-23 02:26:19,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:26:19,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:26:19,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:26:19,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:26:19,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:26:19,262 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:19,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:26:19,303 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2022-11-23 02:26:19,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:26:19,304 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-23 02:26:19,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:26:19,306 INFO L225 Difference]: With dead ends: 31 [2022-11-23 02:26:19,307 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 02:26:19,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:26:19,309 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 19 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:26:19,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 51 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:26:19,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 02:26:19,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 02:26:19,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:19,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 02:26:19,312 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2022-11-23 02:26:19,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:26:19,312 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 02:26:19,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:26:19,313 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 02:26:19,313 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 02:26:19,316 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2022-11-23 02:26:19,319 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2022-11-23 02:26:19,319 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2022-11-23 02:26:19,320 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2022-11-23 02:26:19,320 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2022-11-23 02:26:19,320 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2022-11-23 02:26:19,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f69ccca-72f5-458c-9110-0d9ec5398c36/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 02:26:19,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f69ccca-72f5-458c-9110-0d9ec5398c36/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:26:19,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-23 02:26:19,622 INFO L902 garLoopResultBuilder]: At program point myexitENTRY(lines 572 574) the Hoare annotation is: true [2022-11-23 02:26:19,622 INFO L902 garLoopResultBuilder]: At program point L573(line 573) the Hoare annotation is: true [2022-11-23 02:26:19,622 INFO L899 garLoopResultBuilder]: For program point myexitEXIT(lines 572 574) no Hoare annotation was computed. [2022-11-23 02:26:19,622 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 623) no Hoare annotation was computed. [2022-11-23 02:26:19,623 INFO L895 garLoopResultBuilder]: At program point L601(lines 585 602) the Hoare annotation is: (and (<= 2 |ULTIMATE.start_main_~len~0#1|) (<= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_dll_create_~len#1| 1)) [2022-11-23 02:26:19,623 INFO L899 garLoopResultBuilder]: For program point L626(lines 626 628) no Hoare annotation was computed. [2022-11-23 02:26:19,623 INFO L899 garLoopResultBuilder]: For program point L589(lines 589 591) no Hoare annotation was computed. [2022-11-23 02:26:19,623 INFO L899 garLoopResultBuilder]: For program point L589-1(lines 589 591) no Hoare annotation was computed. [2022-11-23 02:26:19,623 INFO L899 garLoopResultBuilder]: For program point L610-1(lines 610 613) no Hoare annotation was computed. [2022-11-23 02:26:19,624 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-23 02:26:19,624 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 599) no Hoare annotation was computed. [2022-11-23 02:26:19,624 INFO L895 garLoopResultBuilder]: At program point L610-3(lines 610 613) the Hoare annotation is: (and (<= 2 |ULTIMATE.start_main_~len~0#1|) (<= |ULTIMATE.start_main_~len~0#1| 2) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_dll_create_~len#1| 1) (<= |ULTIMATE.start_main_~i~0#1| 1)) [2022-11-23 02:26:19,624 INFO L899 garLoopResultBuilder]: For program point L610-4(lines 610 613) no Hoare annotation was computed. [2022-11-23 02:26:19,624 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-23 02:26:19,625 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 623) no Hoare annotation was computed. [2022-11-23 02:26:19,625 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-23 02:26:19,625 INFO L902 garLoopResultBuilder]: At program point L631(lines 618 632) the Hoare annotation is: true [2022-11-23 02:26:19,625 INFO L902 garLoopResultBuilder]: At program point L627(lines 618 632) the Hoare annotation is: true [2022-11-23 02:26:19,625 INFO L899 garLoopResultBuilder]: For program point L623(line 623) no Hoare annotation was computed. [2022-11-23 02:26:19,626 INFO L902 garLoopResultBuilder]: At program point L590(line 590) the Hoare annotation is: true [2022-11-23 02:26:19,626 INFO L899 garLoopResultBuilder]: For program point L623-1(line 623) no Hoare annotation was computed. [2022-11-23 02:26:19,626 INFO L899 garLoopResultBuilder]: For program point L623-4(lines 623 625) no Hoare annotation was computed. [2022-11-23 02:26:19,626 INFO L899 garLoopResultBuilder]: For program point L623-5(line 623) no Hoare annotation was computed. [2022-11-23 02:26:19,626 INFO L899 garLoopResultBuilder]: For program point L623-6(line 623) no Hoare annotation was computed. [2022-11-23 02:26:19,626 INFO L895 garLoopResultBuilder]: At program point L623-7(lines 623 625) the Hoare annotation is: (and (<= 2 |ULTIMATE.start_main_~len~0#1|) (<= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_dll_create_~len#1| 1) (<= |ULTIMATE.start_main_~i~0#1| 1)) [2022-11-23 02:26:19,627 INFO L899 garLoopResultBuilder]: For program point L623-8(lines 623 625) no Hoare annotation was computed. [2022-11-23 02:26:19,627 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 599) no Hoare annotation was computed. [2022-11-23 02:26:19,627 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-23 02:26:19,627 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 623) no Hoare annotation was computed. [2022-11-23 02:26:19,627 INFO L899 garLoopResultBuilder]: For program point L603(lines 603 617) no Hoare annotation was computed. [2022-11-23 02:26:19,628 INFO L899 garLoopResultBuilder]: For program point L599(line 599) no Hoare annotation was computed. [2022-11-23 02:26:19,628 INFO L899 garLoopResultBuilder]: For program point L599-1(line 599) no Hoare annotation was computed. [2022-11-23 02:26:19,628 INFO L899 garLoopResultBuilder]: For program point L595(lines 595 597) no Hoare annotation was computed. [2022-11-23 02:26:19,628 INFO L899 garLoopResultBuilder]: For program point L595-2(lines 595 597) no Hoare annotation was computed. [2022-11-23 02:26:19,628 INFO L895 garLoopResultBuilder]: At program point L587-2(lines 587 600) the Hoare annotation is: (let ((.cse0 (<= 2 |ULTIMATE.start_main_~len~0#1|)) (.cse1 (<= |ULTIMATE.start_main_~len~0#1| 2))) (or (and .cse0 .cse1 (<= |ULTIMATE.start_dll_create_~len#1| 1)) (and .cse0 (= 2 |ULTIMATE.start_dll_create_~len#1|) .cse1 (= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (= |ULTIMATE.start_dll_create_~head~0#1.base| 0)))) [2022-11-23 02:26:19,629 INFO L899 garLoopResultBuilder]: For program point L587-3(lines 587 600) no Hoare annotation was computed. [2022-11-23 02:26:19,629 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 623) no Hoare annotation was computed. [2022-11-23 02:26:19,629 INFO L899 garLoopResultBuilder]: For program point L604(lines 604 616) no Hoare annotation was computed. [2022-11-23 02:26:19,633 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:26:19,636 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 02:26:19,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:26:19 BoogieIcfgContainer [2022-11-23 02:26:19,652 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 02:26:19,653 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 02:26:19,653 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 02:26:19,653 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 02:26:19,654 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:26:14" (3/4) ... [2022-11-23 02:26:19,657 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 02:26:19,665 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure myexit [2022-11-23 02:26:19,670 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-11-23 02:26:19,670 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-23 02:26:19,670 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-23 02:26:19,671 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 02:26:19,742 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f69ccca-72f5-458c-9110-0d9ec5398c36/bin/uautomizer-QkZJyEgLgS/witness.graphml [2022-11-23 02:26:19,742 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 02:26:19,743 INFO L158 Benchmark]: Toolchain (without parser) took 6593.16ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 99.0MB in the beginning and 59.1MB in the end (delta: 39.9MB). Peak memory consumption was 72.4MB. Max. memory is 16.1GB. [2022-11-23 02:26:19,743 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 146.8MB. Free memory is still 86.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 02:26:19,743 INFO L158 Benchmark]: CACSL2BoogieTranslator took 519.66ms. Allocated memory is still 146.8MB. Free memory was 98.5MB in the beginning and 81.4MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-23 02:26:19,744 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.55ms. Allocated memory is still 146.8MB. Free memory was 81.4MB in the beginning and 79.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 02:26:19,744 INFO L158 Benchmark]: Boogie Preprocessor took 36.97ms. Allocated memory is still 146.8MB. Free memory was 79.7MB in the beginning and 78.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 02:26:19,745 INFO L158 Benchmark]: RCFGBuilder took 670.21ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 78.0MB in the beginning and 137.8MB in the end (delta: -59.8MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. [2022-11-23 02:26:19,745 INFO L158 Benchmark]: TraceAbstraction took 5211.02ms. Allocated memory is still 176.2MB. Free memory was 136.8MB in the beginning and 62.2MB in the end (delta: 74.5MB). Peak memory consumption was 74.5MB. Max. memory is 16.1GB. [2022-11-23 02:26:19,745 INFO L158 Benchmark]: Witness Printer took 89.36ms. Allocated memory is still 176.2MB. Free memory was 62.2MB in the beginning and 59.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 02:26:19,748 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 146.8MB. Free memory is still 86.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 519.66ms. Allocated memory is still 146.8MB. Free memory was 98.5MB in the beginning and 81.4MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.55ms. Allocated memory is still 146.8MB. Free memory was 81.4MB in the beginning and 79.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.97ms. Allocated memory is still 146.8MB. Free memory was 79.7MB in the beginning and 78.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 670.21ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 78.0MB in the beginning and 137.8MB in the end (delta: -59.8MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. * TraceAbstraction took 5211.02ms. Allocated memory is still 176.2MB. Free memory was 136.8MB in the beginning and 62.2MB in the end (delta: 74.5MB). Peak memory consumption was 74.5MB. Max. memory is 16.1GB. * Witness Printer took 89.36ms. Allocated memory is still 176.2MB. Free memory was 62.2MB in the beginning and 59.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 599]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 599]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 623]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 623]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 623]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 623]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 38 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 5.1s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 147 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 147 mSDsluCounter, 667 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 338 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 115 IncrementalHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 329 mSDtfsCounter, 115 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 155 GetRequests, 116 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 14 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 17 NumberOfFragments, 71 HoareAnnotationTreeSize, 9 FomulaSimplifications, 6 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 13 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 251 NumberOfCodeBlocks, 251 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 253 ConstructedInterpolants, 0 QuantifiedInterpolants, 679 SizeOfPredicates, 9 NumberOfNonLiveVariables, 796 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 18 InterpolantComputations, 11 PerfectInterpolantSequences, 30/46 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 618]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: ((2 <= len && len <= 2) && len <= 1) || ((((2 <= len && 2 == len) && len <= 2) && head == 0) && head == 0) - InvariantResult [Line: 623]: Loop Invariant Derived loop invariant: ((2 <= len && len <= 2) && len <= 1) && i <= 1 - InvariantResult [Line: 618]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: (((2 <= len && len <= 2) && 0 <= i) && len <= 1) && i <= 1 - InvariantResult [Line: 585]: Loop Invariant Derived loop invariant: (2 <= len && len <= 2) && len <= 1 - InvariantResult [Line: 573]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-23 02:26:19,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f69ccca-72f5-458c-9110-0d9ec5398c36/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE