./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_10-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b 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_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_10-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN --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 acde98dd01af02b5a508b32116f1b2c3612f1f84e6ba2fe02fc76c333a1d32d3 --- 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-6b4ec56 [2022-11-20 10:50:21,546 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:50:21,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:50:21,569 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:50:21,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:50:21,570 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:50:21,578 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:50:21,580 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:50:21,582 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:50:21,583 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:50:21,588 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:50:21,589 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:50:21,589 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:50:21,590 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:50:21,593 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:50:21,597 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:50:21,598 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:50:21,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:50:21,603 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:50:21,606 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:50:21,613 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:50:21,614 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:50:21,616 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:50:21,622 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:50:21,626 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:50:21,626 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:50:21,630 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:50:21,632 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:50:21,632 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:50:21,633 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:50:21,633 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:50:21,634 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:50:21,635 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:50:21,638 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:50:21,639 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:50:21,640 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:50:21,642 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:50:21,643 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:50:21,643 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:50:21,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:50:21,646 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:50:21,647 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 10:50:21,681 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:50:21,684 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:50:21,685 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:50:21,685 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:50:21,686 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:50:21,687 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:50:21,687 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:50:21,688 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:50:21,688 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:50:21,688 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:50:21,689 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:50:21,690 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:50:21,690 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:50:21,690 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:50:21,690 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:50:21,691 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:50:21,691 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:50:21,691 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:50:21,691 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 10:50:21,691 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:50:21,692 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:50:21,692 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:50:21,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:50:21,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:50:21,693 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:50:21,693 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:50:21,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:50:21,693 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:50:21,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:50:21,695 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:50:21,695 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:50:21,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:50:21,696 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:50:21,696 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:50:21,696 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:50:21,696 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> acde98dd01af02b5a508b32116f1b2c3612f1f84e6ba2fe02fc76c333a1d32d3 [2022-11-20 10:50:22,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:50:22,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:50:22,053 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:50:22,054 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:50:22,055 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:50:22,056 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/recursive-simple/fibo_10-1.c [2022-11-20 10:50:25,261 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:50:25,435 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:50:25,436 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/sv-benchmarks/c/recursive-simple/fibo_10-1.c [2022-11-20 10:50:25,442 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/data/3a6c29605/b752b83426b84236adbd080c5bc67023/FLAGc648d9db1 [2022-11-20 10:50:25,456 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/data/3a6c29605/b752b83426b84236adbd080c5bc67023 [2022-11-20 10:50:25,459 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:50:25,461 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:50:25,462 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:50:25,462 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:50:25,467 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:50:25,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:50:25" (1/1) ... [2022-11-20 10:50:25,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56e848c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:25, skipping insertion in model container [2022-11-20 10:50:25,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:50:25" (1/1) ... [2022-11-20 10:50:25,478 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:50:25,491 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:50:25,655 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_b775d943-d9c9-46eb-9512-f160d60e1e6d/sv-benchmarks/c/recursive-simple/fibo_10-1.c[743,756] [2022-11-20 10:50:25,656 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:50:25,667 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:50:25,681 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_b775d943-d9c9-46eb-9512-f160d60e1e6d/sv-benchmarks/c/recursive-simple/fibo_10-1.c[743,756] [2022-11-20 10:50:25,682 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:50:25,695 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:50:25,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:25 WrapperNode [2022-11-20 10:50:25,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:50:25,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:50:25,698 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:50:25,698 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:50:25,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:25" (1/1) ... [2022-11-20 10:50:25,713 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:25" (1/1) ... [2022-11-20 10:50:25,730 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2022-11-20 10:50:25,730 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:50:25,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:50:25,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:50:25,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:50:25,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:25" (1/1) ... [2022-11-20 10:50:25,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:25" (1/1) ... [2022-11-20 10:50:25,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:25" (1/1) ... [2022-11-20 10:50:25,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:25" (1/1) ... [2022-11-20 10:50:25,743 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:25" (1/1) ... [2022-11-20 10:50:25,745 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:25" (1/1) ... [2022-11-20 10:50:25,746 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:25" (1/1) ... [2022-11-20 10:50:25,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:25" (1/1) ... [2022-11-20 10:50:25,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:50:25,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:50:25,749 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:50:25,749 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:50:25,750 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:25" (1/1) ... [2022-11-20 10:50:25,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:50:25,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:50:25,784 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:50:25,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:50:25,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:50:25,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:50:25,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:50:25,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:50:25,848 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2022-11-20 10:50:25,848 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2022-11-20 10:50:25,920 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:50:25,922 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:50:26,112 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:50:26,118 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:50:26,118 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 10:50:26,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:50:26 BoogieIcfgContainer [2022-11-20 10:50:26,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:50:26,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:50:26,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:50:26,127 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:50:26,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:50:25" (1/3) ... [2022-11-20 10:50:26,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed79f01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:50:26, skipping insertion in model container [2022-11-20 10:50:26,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:25" (2/3) ... [2022-11-20 10:50:26,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed79f01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:50:26, skipping insertion in model container [2022-11-20 10:50:26,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:50:26" (3/3) ... [2022-11-20 10:50:26,130 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_10-1.c [2022-11-20 10:50:26,148 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:50:26,148 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-20 10:50:26,202 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:50:26,209 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;@3c7f1b15, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:50:26,210 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-20 10:50:26,214 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 20 states have (on average 1.45) internal successors, (29), 26 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 10:50:26,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 10:50:26,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:26,227 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:26,229 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:50:26,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:26,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1840307469, now seen corresponding path program 1 times [2022-11-20 10:50:26,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:26,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814116126] [2022-11-20 10:50:26,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:26,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:26,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:26,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:26,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:26,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814116126] [2022-11-20 10:50:26,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814116126] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:26,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:26,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:50:26,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043776913] [2022-11-20 10:50:26,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:26,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:50:26,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:26,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:50:26,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:50:26,573 INFO L87 Difference]: Start difference. First operand has 31 states, 20 states have (on average 1.45) internal successors, (29), 26 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2022-11-20 10:50:26,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:26,717 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2022-11-20 10:50:26,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:50:26,720 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-20 10:50:26,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:26,727 INFO L225 Difference]: With dead ends: 35 [2022-11-20 10:50:26,728 INFO L226 Difference]: Without dead ends: 22 [2022-11-20 10:50:26,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:50:26,734 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 39 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:26,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 42 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:50:26,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-20 10:50:26,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-20 10:50:26,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 18 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 10:50:26,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-11-20 10:50:26,773 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 7 [2022-11-20 10:50:26,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:26,773 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-11-20 10:50:26,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2022-11-20 10:50:26,774 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-11-20 10:50:26,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 10:50:26,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:26,775 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:26,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:50:26,776 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:50:26,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:26,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1214956750, now seen corresponding path program 1 times [2022-11-20 10:50:26,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:26,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339424845] [2022-11-20 10:50:26,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:26,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:26,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:26,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:26,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:26,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339424845] [2022-11-20 10:50:26,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339424845] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:26,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:26,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:50:26,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045354122] [2022-11-20 10:50:26,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:26,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:50:26,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:26,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:50:26,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:50:26,823 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:26,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:26,865 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2022-11-20 10:50:26,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:50:26,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 10:50:26,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:26,868 INFO L225 Difference]: With dead ends: 24 [2022-11-20 10:50:26,868 INFO L226 Difference]: Without dead ends: 22 [2022-11-20 10:50:26,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:50:26,870 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 11 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:26,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 22 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:50:26,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-20 10:50:26,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2022-11-20 10:50:26,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 16 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 10:50:26,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-11-20 10:50:26,880 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 8 [2022-11-20 10:50:26,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:26,880 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-11-20 10:50:26,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:26,881 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-11-20 10:50:26,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 10:50:26,882 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:26,882 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:26,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:50:26,883 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:50:26,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:26,884 INFO L85 PathProgramCache]: Analyzing trace with hash 199265907, now seen corresponding path program 1 times [2022-11-20 10:50:26,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:26,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59884363] [2022-11-20 10:50:26,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:26,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:26,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:27,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:50:27,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:27,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 10:50:27,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:27,216 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 10:50:27,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:27,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59884363] [2022-11-20 10:50:27,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59884363] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:27,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:27,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:50:27,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421857927] [2022-11-20 10:50:27,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:27,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:50:27,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:27,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:50:27,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:50:27,224 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 10:50:27,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:27,313 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2022-11-20 10:50:27,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:50:27,314 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2022-11-20 10:50:27,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:27,315 INFO L225 Difference]: With dead ends: 36 [2022-11-20 10:50:27,315 INFO L226 Difference]: Without dead ends: 34 [2022-11-20 10:50:27,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:50:27,317 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 7 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:27,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 51 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:50:27,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-20 10:50:27,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2022-11-20 10:50:27,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 23 states have internal predecessors, (25), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-20 10:50:27,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2022-11-20 10:50:27,326 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 29 [2022-11-20 10:50:27,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:27,327 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2022-11-20 10:50:27,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 10:50:27,327 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-11-20 10:50:27,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-20 10:50:27,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:27,329 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:27,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:50:27,329 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:50:27,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:27,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1894113426, now seen corresponding path program 1 times [2022-11-20 10:50:27,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:27,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809236934] [2022-11-20 10:50:27,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:27,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:27,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:27,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:50:27,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:27,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 10:50:27,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:27,478 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 10:50:27,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:27,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809236934] [2022-11-20 10:50:27,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809236934] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:50:27,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914839778] [2022-11-20 10:50:27,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:27,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:50:27,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:50:27,483 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:50:27,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:50:27,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:27,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 10:50:27,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:27,757 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:27,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:50:27,930 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:50:27,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914839778] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:50:27,930 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:50:27,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2022-11-20 10:50:27,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763939017] [2022-11-20 10:50:27,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:50:27,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 10:50:27,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:27,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 10:50:27,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-11-20 10:50:27,933 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 19 states, 17 states have (on average 3.176470588235294) internal successors, (54), 15 states have internal predecessors, (54), 9 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-20 10:50:28,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:28,632 INFO L93 Difference]: Finished difference Result 178 states and 248 transitions. [2022-11-20 10:50:28,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 10:50:28,634 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.176470588235294) internal successors, (54), 15 states have internal predecessors, (54), 9 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 30 [2022-11-20 10:50:28,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:28,639 INFO L225 Difference]: With dead ends: 178 [2022-11-20 10:50:28,639 INFO L226 Difference]: Without dead ends: 145 [2022-11-20 10:50:28,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2022-11-20 10:50:28,642 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 213 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:28,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 258 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 10:50:28,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-11-20 10:50:28,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 129. [2022-11-20 10:50:28,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 100 states have (on average 1.11) internal successors, (111), 102 states have internal predecessors, (111), 17 states have call successors, (17), 5 states have call predecessors, (17), 10 states have return successors, (46), 21 states have call predecessors, (46), 16 states have call successors, (46) [2022-11-20 10:50:28,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 174 transitions. [2022-11-20 10:50:28,684 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 174 transitions. Word has length 30 [2022-11-20 10:50:28,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:28,685 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 174 transitions. [2022-11-20 10:50:28,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.176470588235294) internal successors, (54), 15 states have internal predecessors, (54), 9 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-20 10:50:28,685 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 174 transitions. [2022-11-20 10:50:28,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-20 10:50:28,686 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:28,687 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:28,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:28,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:50:28,893 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:50:28,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:28,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1184531600, now seen corresponding path program 2 times [2022-11-20 10:50:28,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:28,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871926482] [2022-11-20 10:50:28,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:28,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:28,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:29,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 10:50:29,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:29,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 10:50:29,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:29,160 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 10:50:29,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:29,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871926482] [2022-11-20 10:50:29,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871926482] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:50:29,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779199600] [2022-11-20 10:50:29,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:50:29,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:50:29,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:50:29,163 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:50:29,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:50:29,229 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:50:29,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:50:29,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:50:29,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:29,278 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 10:50:29,278 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:29,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779199600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:29,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:50:29,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-20 10:50:29,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286173048] [2022-11-20 10:50:29,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:29,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:50:29,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:29,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:50:29,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:50:29,282 INFO L87 Difference]: Start difference. First operand 129 states and 174 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 10:50:29,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:29,321 INFO L93 Difference]: Finished difference Result 143 states and 190 transitions. [2022-11-20 10:50:29,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:50:29,321 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2022-11-20 10:50:29,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:29,326 INFO L225 Difference]: With dead ends: 143 [2022-11-20 10:50:29,327 INFO L226 Difference]: Without dead ends: 142 [2022-11-20 10:50:29,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:50:29,331 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 7 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:29,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 64 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:50:29,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-11-20 10:50:29,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 133. [2022-11-20 10:50:29,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 104 states have (on average 1.1057692307692308) internal successors, (115), 104 states have internal predecessors, (115), 17 states have call successors, (17), 5 states have call predecessors, (17), 10 states have return successors, (46), 23 states have call predecessors, (46), 16 states have call successors, (46) [2022-11-20 10:50:29,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 178 transitions. [2022-11-20 10:50:29,367 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 178 transitions. Word has length 42 [2022-11-20 10:50:29,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:29,367 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 178 transitions. [2022-11-20 10:50:29,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 10:50:29,368 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 178 transitions. [2022-11-20 10:50:29,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-20 10:50:29,371 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:29,371 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:29,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:29,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:50:29,577 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:50:29,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:29,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1934226135, now seen corresponding path program 1 times [2022-11-20 10:50:29,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:29,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601090553] [2022-11-20 10:50:29,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:29,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:29,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:29,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 10:50:29,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:29,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 10:50:29,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:29,780 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 10:50:29,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:29,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601090553] [2022-11-20 10:50:29,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601090553] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:50:29,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962509520] [2022-11-20 10:50:29,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:29,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:50:29,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:50:29,782 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:50:29,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:50:29,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:29,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 10:50:29,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:30,041 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 12 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:30,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:50:30,320 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:50:30,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962509520] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:50:30,321 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:50:30,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 13] total 27 [2022-11-20 10:50:30,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895796730] [2022-11-20 10:50:30,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:50:30,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-20 10:50:30,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:30,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-20 10:50:30,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=583, Unknown=0, NotChecked=0, Total=702 [2022-11-20 10:50:30,328 INFO L87 Difference]: Start difference. First operand 133 states and 178 transitions. Second operand has 27 states, 25 states have (on average 3.08) internal successors, (77), 19 states have internal predecessors, (77), 13 states have call successors, (15), 10 states have call predecessors, (15), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-20 10:50:31,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:31,713 INFO L93 Difference]: Finished difference Result 450 states and 682 transitions. [2022-11-20 10:50:31,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-20 10:50:31,714 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 3.08) internal successors, (77), 19 states have internal predecessors, (77), 13 states have call successors, (15), 10 states have call predecessors, (15), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 43 [2022-11-20 10:50:31,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:31,717 INFO L225 Difference]: With dead ends: 450 [2022-11-20 10:50:31,717 INFO L226 Difference]: Without dead ends: 332 [2022-11-20 10:50:31,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=324, Invalid=1568, Unknown=0, NotChecked=0, Total=1892 [2022-11-20 10:50:31,721 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 265 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 1373 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 1503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:31,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 685 Invalid, 1503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1373 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 10:50:31,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-11-20 10:50:31,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 295. [2022-11-20 10:50:31,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 232 states have (on average 1.0991379310344827) internal successors, (255), 232 states have internal predecessors, (255), 37 states have call successors, (37), 11 states have call predecessors, (37), 24 states have return successors, (109), 51 states have call predecessors, (109), 36 states have call successors, (109) [2022-11-20 10:50:31,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 401 transitions. [2022-11-20 10:50:31,753 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 401 transitions. Word has length 43 [2022-11-20 10:50:31,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:31,753 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 401 transitions. [2022-11-20 10:50:31,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 3.08) internal successors, (77), 19 states have internal predecessors, (77), 13 states have call successors, (15), 10 states have call predecessors, (15), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-20 10:50:31,753 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 401 transitions. [2022-11-20 10:50:31,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 10:50:31,755 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:31,755 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:31,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:31,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:50:31,960 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:50:31,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:31,961 INFO L85 PathProgramCache]: Analyzing trace with hash -994547079, now seen corresponding path program 1 times [2022-11-20 10:50:31,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:31,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638661661] [2022-11-20 10:50:31,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:31,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:32,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 10:50:32,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:32,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-20 10:50:32,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:32,191 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2022-11-20 10:50:32,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:32,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638661661] [2022-11-20 10:50:32,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638661661] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:32,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:32,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:50:32,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182860876] [2022-11-20 10:50:32,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:32,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:50:32,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:32,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:50:32,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:50:32,193 INFO L87 Difference]: Start difference. First operand 295 states and 401 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 10:50:32,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:32,292 INFO L93 Difference]: Finished difference Result 312 states and 424 transitions. [2022-11-20 10:50:32,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:50:32,292 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 79 [2022-11-20 10:50:32,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:32,295 INFO L225 Difference]: With dead ends: 312 [2022-11-20 10:50:32,295 INFO L226 Difference]: Without dead ends: 310 [2022-11-20 10:50:32,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:50:32,296 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 5 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:32,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 80 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:50:32,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-11-20 10:50:32,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 302. [2022-11-20 10:50:32,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 238 states have (on average 1.096638655462185) internal successors, (261), 237 states have internal predecessors, (261), 38 states have call successors, (38), 11 states have call predecessors, (38), 24 states have return successors, (115), 53 states have call predecessors, (115), 37 states have call successors, (115) [2022-11-20 10:50:32,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 414 transitions. [2022-11-20 10:50:32,344 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 414 transitions. Word has length 79 [2022-11-20 10:50:32,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:32,346 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 414 transitions. [2022-11-20 10:50:32,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 10:50:32,347 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 414 transitions. [2022-11-20 10:50:32,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-20 10:50:32,358 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:32,358 INFO L195 NwaCegarLoop]: trace histogram [15, 12, 11, 11, 11, 11, 5, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:32,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:50:32,359 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:50:32,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:32,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1679547299, now seen corresponding path program 1 times [2022-11-20 10:50:32,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:32,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751581541] [2022-11-20 10:50:32,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:32,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:32,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-20 10:50:32,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:32,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-20 10:50:32,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:32,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 10:50:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:32,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:50:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:32,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:50:32,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:32,566 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 457 trivial. 0 not checked. [2022-11-20 10:50:32,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:32,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751581541] [2022-11-20 10:50:32,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751581541] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:50:32,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758965473] [2022-11-20 10:50:32,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:32,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:50:32,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:50:32,569 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:50:32,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 10:50:32,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:32,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 10:50:32,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:33,048 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 189 proven. 234 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-20 10:50:33,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:50:33,492 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 58 proven. 384 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-20 10:50:33,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758965473] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:50:33,493 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:50:33,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 23, 23] total 27 [2022-11-20 10:50:33,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476525726] [2022-11-20 10:50:33,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:50:33,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-20 10:50:33,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:33,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-20 10:50:33,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=567, Unknown=0, NotChecked=0, Total=702 [2022-11-20 10:50:33,499 INFO L87 Difference]: Start difference. First operand 302 states and 414 transitions. Second operand has 27 states, 26 states have (on average 3.423076923076923) internal successors, (89), 18 states have internal predecessors, (89), 13 states have call successors, (18), 11 states have call predecessors, (18), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-20 10:50:34,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:34,457 INFO L93 Difference]: Finished difference Result 652 states and 941 transitions. [2022-11-20 10:50:34,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-20 10:50:34,458 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.423076923076923) internal successors, (89), 18 states have internal predecessors, (89), 13 states have call successors, (18), 11 states have call predecessors, (18), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 105 [2022-11-20 10:50:34,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:34,460 INFO L225 Difference]: With dead ends: 652 [2022-11-20 10:50:34,461 INFO L226 Difference]: Without dead ends: 365 [2022-11-20 10:50:34,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 187 SyntacticMatches, 20 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=315, Invalid=1167, Unknown=0, NotChecked=0, Total=1482 [2022-11-20 10:50:34,464 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 306 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 874 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:34,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 562 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 874 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 10:50:34,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2022-11-20 10:50:34,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 330. [2022-11-20 10:50:34,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 260 states have (on average 1.0961538461538463) internal successors, (285), 259 states have internal predecessors, (285), 42 states have call successors, (42), 12 states have call predecessors, (42), 26 states have return successors, (130), 58 states have call predecessors, (130), 41 states have call successors, (130) [2022-11-20 10:50:34,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 457 transitions. [2022-11-20 10:50:34,491 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 457 transitions. Word has length 105 [2022-11-20 10:50:34,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:34,492 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 457 transitions. [2022-11-20 10:50:34,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.423076923076923) internal successors, (89), 18 states have internal predecessors, (89), 13 states have call successors, (18), 11 states have call predecessors, (18), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-20 10:50:34,492 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 457 transitions. [2022-11-20 10:50:34,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-20 10:50:34,494 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:34,494 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 10, 10, 10, 10, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:34,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:34,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-20 10:50:34,700 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:50:34,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:34,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1618530551, now seen corresponding path program 2 times [2022-11-20 10:50:34,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:34,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65205146] [2022-11-20 10:50:34,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:34,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:34,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:35,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-20 10:50:35,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:35,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 10:50:35,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:35,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:50:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:35,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 10:50:35,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:35,164 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 231 proven. 130 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 10:50:35,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:35,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65205146] [2022-11-20 10:50:35,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65205146] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:50:35,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504733741] [2022-11-20 10:50:35,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:50:35,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:50:35,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:50:35,166 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:50:35,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 10:50:35,229 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:50:35,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:50:35,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 10:50:35,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:35,401 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 226 proven. 133 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 10:50:35,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:50:35,750 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 226 proven. 133 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 10:50:35,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504733741] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:50:35,751 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:50:35,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23, 23] total 28 [2022-11-20 10:50:35,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954116755] [2022-11-20 10:50:35,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:50:35,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 10:50:35,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:35,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 10:50:35,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2022-11-20 10:50:35,754 INFO L87 Difference]: Start difference. First operand 330 states and 457 transitions. Second operand has 28 states, 27 states have (on average 3.111111111111111) internal successors, (84), 19 states have internal predecessors, (84), 13 states have call successors, (15), 10 states have call predecessors, (15), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-20 10:50:36,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:36,839 INFO L93 Difference]: Finished difference Result 532 states and 737 transitions. [2022-11-20 10:50:36,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-20 10:50:36,840 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.111111111111111) internal successors, (84), 19 states have internal predecessors, (84), 13 states have call successors, (15), 10 states have call predecessors, (15), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 92 [2022-11-20 10:50:36,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:36,841 INFO L225 Difference]: With dead ends: 532 [2022-11-20 10:50:36,842 INFO L226 Difference]: Without dead ends: 205 [2022-11-20 10:50:36,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 178 SyntacticMatches, 20 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1111 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1007, Invalid=2899, Unknown=0, NotChecked=0, Total=3906 [2022-11-20 10:50:36,846 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 901 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:36,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 163 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 10:50:36,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-11-20 10:50:36,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 179. [2022-11-20 10:50:36,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 142 states have (on average 1.1408450704225352) internal successors, (162), 142 states have internal predecessors, (162), 23 states have call successors, (23), 14 states have call predecessors, (23), 12 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-20 10:50:36,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 207 transitions. [2022-11-20 10:50:36,861 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 207 transitions. Word has length 92 [2022-11-20 10:50:36,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:36,862 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 207 transitions. [2022-11-20 10:50:36,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.111111111111111) internal successors, (84), 19 states have internal predecessors, (84), 13 states have call successors, (15), 10 states have call predecessors, (15), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-20 10:50:36,862 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 207 transitions. [2022-11-20 10:50:36,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-20 10:50:36,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:36,863 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 9, 9, 9, 9, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:36,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:37,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:50:37,069 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:50:37,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:37,069 INFO L85 PathProgramCache]: Analyzing trace with hash -906589917, now seen corresponding path program 3 times [2022-11-20 10:50:37,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:37,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704596894] [2022-11-20 10:50:37,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:37,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:37,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:37,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 10:50:37,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:37,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:50:37,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:37,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:50:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:37,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 10:50:37,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:37,248 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2022-11-20 10:50:37,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:37,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704596894] [2022-11-20 10:50:37,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704596894] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:50:37,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688776085] [2022-11-20 10:50:37,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 10:50:37,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:50:37,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:50:37,250 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:50:37,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 10:50:37,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 10:50:37,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:50:37,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 10:50:37,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:37,382 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2022-11-20 10:50:37,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:50:37,602 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2022-11-20 10:50:37,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688776085] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:50:37,602 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:50:37,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 13 [2022-11-20 10:50:37,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046655202] [2022-11-20 10:50:37,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:50:37,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 10:50:37,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:37,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 10:50:37,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-11-20 10:50:37,607 INFO L87 Difference]: Start difference. First operand 179 states and 207 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (8), 8 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 10:50:37,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:37,716 INFO L93 Difference]: Finished difference Result 182 states and 207 transitions. [2022-11-20 10:50:37,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 10:50:37,717 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (8), 8 states have call predecessors, (8), 3 states have call successors, (8) Word has length 86 [2022-11-20 10:50:37,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:37,718 INFO L225 Difference]: With dead ends: 182 [2022-11-20 10:50:37,718 INFO L226 Difference]: Without dead ends: 181 [2022-11-20 10:50:37,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 173 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-11-20 10:50:37,719 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 22 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:37,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 89 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:50:37,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-11-20 10:50:37,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 179. [2022-11-20 10:50:37,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 142 states have (on average 1.1267605633802817) internal successors, (160), 142 states have internal predecessors, (160), 23 states have call successors, (23), 14 states have call predecessors, (23), 12 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-20 10:50:37,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 205 transitions. [2022-11-20 10:50:37,736 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 205 transitions. Word has length 86 [2022-11-20 10:50:37,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:37,736 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 205 transitions. [2022-11-20 10:50:37,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (8), 8 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 10:50:37,737 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 205 transitions. [2022-11-20 10:50:37,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-20 10:50:37,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:37,737 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 9, 9, 9, 9, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:37,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:37,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 10:50:37,949 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:50:37,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:37,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1960483716, now seen corresponding path program 1 times [2022-11-20 10:50:37,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:37,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875480285] [2022-11-20 10:50:37,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:37,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:37,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:38,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 10:50:38,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:38,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:50:38,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:38,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:50:38,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:38,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 10:50:38,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:38,035 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2022-11-20 10:50:38,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:38,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875480285] [2022-11-20 10:50:38,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875480285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:38,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:38,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:50:38,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316879703] [2022-11-20 10:50:38,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:38,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:50:38,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:38,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:50:38,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:50:38,037 INFO L87 Difference]: Start difference. First operand 179 states and 205 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 10:50:38,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:38,069 INFO L93 Difference]: Finished difference Result 180 states and 205 transitions. [2022-11-20 10:50:38,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:50:38,070 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 87 [2022-11-20 10:50:38,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:38,072 INFO L225 Difference]: With dead ends: 180 [2022-11-20 10:50:38,072 INFO L226 Difference]: Without dead ends: 179 [2022-11-20 10:50:38,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:50:38,073 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 4 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:38,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 50 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:50:38,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-11-20 10:50:38,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2022-11-20 10:50:38,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 142 states have (on average 1.119718309859155) internal successors, (159), 142 states have internal predecessors, (159), 23 states have call successors, (23), 14 states have call predecessors, (23), 12 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-20 10:50:38,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 204 transitions. [2022-11-20 10:50:38,088 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 204 transitions. Word has length 87 [2022-11-20 10:50:38,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:38,089 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 204 transitions. [2022-11-20 10:50:38,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 10:50:38,089 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 204 transitions. [2022-11-20 10:50:38,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-20 10:50:38,090 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:38,090 INFO L195 NwaCegarLoop]: trace histogram [15, 13, 10, 10, 10, 10, 8, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1] [2022-11-20 10:50:38,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 10:50:38,090 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:50:38,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:38,091 INFO L85 PathProgramCache]: Analyzing trace with hash -228343141, now seen corresponding path program 2 times [2022-11-20 10:50:38,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:38,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844094461] [2022-11-20 10:50:38,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:38,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:38,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-20 10:50:38,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:38,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:50:38,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:38,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:50:38,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:38,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:50:38,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:38,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:50:38,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:38,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-20 10:50:38,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:38,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:50:38,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:38,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:50:38,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:38,578 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 38 proven. 23 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2022-11-20 10:50:38,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:38,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844094461] [2022-11-20 10:50:38,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844094461] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:50:38,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421711536] [2022-11-20 10:50:38,579 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:50:38,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:50:38,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:50:38,580 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:50:38,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 10:50:38,658 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:50:38,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:50:38,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 10:50:38,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:38,775 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 26 proven. 56 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2022-11-20 10:50:38,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:50:39,222 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 26 proven. 58 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2022-11-20 10:50:39,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421711536] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:50:39,223 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:50:39,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-20 10:50:39,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247661444] [2022-11-20 10:50:39,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:50:39,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 10:50:39,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:39,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 10:50:39,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2022-11-20 10:50:39,225 INFO L87 Difference]: Start difference. First operand 179 states and 204 transitions. Second operand has 19 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 19 states have internal predecessors, (62), 5 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (15), 12 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-20 10:50:39,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:39,311 INFO L93 Difference]: Finished difference Result 179 states and 204 transitions. [2022-11-20 10:50:39,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 10:50:39,311 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 19 states have internal predecessors, (62), 5 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (15), 12 states have call predecessors, (15), 5 states have call successors, (15) Word has length 120 [2022-11-20 10:50:39,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:39,313 INFO L225 Difference]: With dead ends: 179 [2022-11-20 10:50:39,313 INFO L226 Difference]: Without dead ends: 177 [2022-11-20 10:50:39,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 252 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2022-11-20 10:50:39,314 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 14 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:39,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 152 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:50:39,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-20 10:50:39,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2022-11-20 10:50:39,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 141 states have (on average 1.0567375886524824) internal successors, (149), 140 states have internal predecessors, (149), 23 states have call successors, (23), 14 states have call predecessors, (23), 12 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-20 10:50:39,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 194 transitions. [2022-11-20 10:50:39,326 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 194 transitions. Word has length 120 [2022-11-20 10:50:39,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:39,327 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 194 transitions. [2022-11-20 10:50:39,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 19 states have internal predecessors, (62), 5 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (15), 12 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-20 10:50:39,327 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 194 transitions. [2022-11-20 10:50:39,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-20 10:50:39,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:39,329 INFO L195 NwaCegarLoop]: trace histogram [20, 17, 14, 12, 12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 3, 1, 1, 1, 1] [2022-11-20 10:50:39,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:39,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 10:50:39,534 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:50:39,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:39,535 INFO L85 PathProgramCache]: Analyzing trace with hash -779849832, now seen corresponding path program 4 times [2022-11-20 10:50:39,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:39,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957638271] [2022-11-20 10:50:39,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:39,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:39,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:39,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 10:50:40,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:40,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:50:40,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:40,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:50:40,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:40,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:50:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:40,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:50:40,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:40,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:50:40,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:40,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:50:40,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:40,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:50:40,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:40,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:50:40,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:40,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-20 10:50:40,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:40,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:50:40,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:40,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:50:40,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:40,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:50:40,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:40,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:50:40,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:40,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1037 backedges. 78 proven. 129 refuted. 0 times theorem prover too weak. 830 trivial. 0 not checked. [2022-11-20 10:50:40,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:40,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957638271] [2022-11-20 10:50:40,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957638271] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:50:40,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338263648] [2022-11-20 10:50:40,344 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 10:50:40,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:50:40,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:50:40,345 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:50:40,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 10:50:40,458 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 10:50:40,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:50:40,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-20 10:50:40,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:40,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1037 backedges. 78 proven. 129 refuted. 0 times theorem prover too weak. 830 trivial. 0 not checked. [2022-11-20 10:50:40,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:50:42,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1037 backedges. 144 proven. 122 refuted. 0 times theorem prover too weak. 771 trivial. 0 not checked. [2022-11-20 10:50:42,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338263648] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:50:42,091 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:50:42,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 17] total 26 [2022-11-20 10:50:42,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850142447] [2022-11-20 10:50:42,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:50:42,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-20 10:50:42,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:42,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-20 10:50:42,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2022-11-20 10:50:42,093 INFO L87 Difference]: Start difference. First operand 177 states and 194 transitions. Second operand has 27 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 27 states have internal predecessors, (68), 7 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (18), 18 states have call predecessors, (18), 7 states have call successors, (18) [2022-11-20 10:50:42,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:42,215 INFO L93 Difference]: Finished difference Result 178 states and 194 transitions. [2022-11-20 10:50:42,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 10:50:42,216 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 27 states have internal predecessors, (68), 7 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (18), 18 states have call predecessors, (18), 7 states have call successors, (18) Word has length 172 [2022-11-20 10:50:42,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:42,217 INFO L225 Difference]: With dead ends: 178 [2022-11-20 10:50:42,217 INFO L226 Difference]: Without dead ends: 177 [2022-11-20 10:50:42,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 358 SyntacticMatches, 16 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=178, Invalid=578, Unknown=0, NotChecked=0, Total=756 [2022-11-20 10:50:42,219 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 36 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:42,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 141 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:50:42,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-20 10:50:42,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2022-11-20 10:50:42,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 141 states have (on average 1.0354609929078014) internal successors, (146), 140 states have internal predecessors, (146), 23 states have call successors, (23), 14 states have call predecessors, (23), 12 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-20 10:50:42,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 191 transitions. [2022-11-20 10:50:42,236 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 191 transitions. Word has length 172 [2022-11-20 10:50:42,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:42,236 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 191 transitions. [2022-11-20 10:50:42,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 27 states have internal predecessors, (68), 7 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (18), 18 states have call predecessors, (18), 7 states have call successors, (18) [2022-11-20 10:50:42,237 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 191 transitions. [2022-11-20 10:50:42,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2022-11-20 10:50:42,244 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:42,245 INFO L195 NwaCegarLoop]: trace histogram [44, 40, 36, 23, 23, 23, 23, 20, 20, 20, 20, 20, 20, 20, 19, 19, 13, 8, 1, 1, 1, 1] [2022-11-20 10:50:42,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:42,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:50:42,456 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:50:42,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:42,456 INFO L85 PathProgramCache]: Analyzing trace with hash 396660910, now seen corresponding path program 5 times [2022-11-20 10:50:42,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:42,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168470081] [2022-11-20 10:50:42,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:42,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:42,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:44,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 10:50:44,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:45,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:50:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:45,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:50:45,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:45,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:50:45,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:45,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:50:45,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:45,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:50:45,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:45,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:50:45,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:45,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:50:45,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:45,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:50:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:45,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:50:45,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:45,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:50:45,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:45,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-20 10:50:45,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:45,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:50:45,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:45,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:50:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:45,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:50:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:45,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:50:45,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:45,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-20 10:50:45,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:45,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:50:46,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:46,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:50:46,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:46,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:50:46,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:46,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:50:46,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:46,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:50:46,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:46,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:50:46,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:46,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:50:46,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:46,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:50:46,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:46,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-11-20 10:50:46,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:46,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:50:46,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:46,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:50:46,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:46,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:50:46,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:46,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:50:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:46,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:50:46,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:46,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:50:46,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:46,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:50:46,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:46,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:50:46,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:46,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:50:46,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:46,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-20 10:50:46,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:46,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:50:46,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:46,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:50:46,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:46,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:50:46,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:46,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:50:46,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:46,622 INFO L134 CoverageAnalysis]: Checked inductivity of 6152 backedges. 820 proven. 1093 refuted. 0 times theorem prover too weak. 4239 trivial. 0 not checked. [2022-11-20 10:50:46,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:46,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168470081] [2022-11-20 10:50:46,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168470081] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:50:46,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756492313] [2022-11-20 10:50:46,623 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 10:50:46,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:50:46,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:50:46,627 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:50:46,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 10:50:46,867 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2022-11-20 10:50:46,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:50:46,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 81 conjunts are in the unsatisfiable core [2022-11-20 10:50:46,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:47,527 INFO L134 CoverageAnalysis]: Checked inductivity of 6152 backedges. 820 proven. 1093 refuted. 0 times theorem prover too weak. 4239 trivial. 0 not checked. [2022-11-20 10:50:47,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:50:55,831 INFO L134 CoverageAnalysis]: Checked inductivity of 6152 backedges. 1149 proven. 996 refuted. 0 times theorem prover too weak. 4007 trivial. 0 not checked. [2022-11-20 10:50:55,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756492313] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:50:55,832 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:50:55,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 29] total 40 [2022-11-20 10:50:55,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530449895] [2022-11-20 10:50:55,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:50:55,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-20 10:50:55,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:55,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-20 10:50:55,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1273, Unknown=0, NotChecked=0, Total=1640 [2022-11-20 10:50:55,835 INFO L87 Difference]: Start difference. First operand 177 states and 191 transitions. Second operand has 41 states, 40 states have (on average 2.55) internal successors, (102), 41 states have internal predecessors, (102), 11 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (28), 28 states have call predecessors, (28), 11 states have call successors, (28) [2022-11-20 10:50:55,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:55,985 INFO L93 Difference]: Finished difference Result 178 states and 191 transitions. [2022-11-20 10:50:55,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 10:50:55,986 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.55) internal successors, (102), 41 states have internal predecessors, (102), 11 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (28), 28 states have call predecessors, (28), 11 states have call successors, (28) Word has length 415 [2022-11-20 10:50:55,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:55,989 INFO L225 Difference]: With dead ends: 178 [2022-11-20 10:50:55,989 INFO L226 Difference]: Without dead ends: 177 [2022-11-20 10:50:55,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 990 GetRequests, 888 SyntacticMatches, 62 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2223 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=381, Invalid=1341, Unknown=0, NotChecked=0, Total=1722 [2022-11-20 10:50:55,991 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 63 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:55,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 155 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:50:55,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-20 10:50:56,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2022-11-20 10:50:56,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 141 states have (on average 1.0141843971631206) internal successors, (143), 140 states have internal predecessors, (143), 23 states have call successors, (23), 14 states have call predecessors, (23), 12 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-20 10:50:56,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 188 transitions. [2022-11-20 10:50:56,004 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 188 transitions. Word has length 415 [2022-11-20 10:50:56,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:56,006 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 188 transitions. [2022-11-20 10:50:56,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.55) internal successors, (102), 41 states have internal predecessors, (102), 11 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (28), 28 states have call predecessors, (28), 11 states have call successors, (28) [2022-11-20 10:50:56,007 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 188 transitions. [2022-11-20 10:50:56,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1071 [2022-11-20 10:50:56,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:56,046 INFO L195 NwaCegarLoop]: trace histogram [110, 108, 89, 55, 55, 55, 55, 54, 54, 54, 54, 54, 54, 54, 53, 53, 34, 21, 1, 1, 1, 1] [2022-11-20 10:50:56,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:56,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:50:56,253 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:50:56,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:56,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1723956895, now seen corresponding path program 6 times [2022-11-20 10:50:56,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:56,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056398941] [2022-11-20 10:50:56,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:56,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:56,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:07,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:51:07,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:10,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:11,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:11,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:11,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:11,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:11,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:11,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:11,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:11,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:11,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:11,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:11,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:11,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:51:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:11,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:51:11,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:11,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:51:11,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:11,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:11,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:51:11,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:11,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-20 10:51:11,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:11,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:12,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:12,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:12,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:51:12,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:12,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:51:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:12,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-20 10:51:12,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:12,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:12,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:12,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:12,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:12,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:12,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:51:12,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:12,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:51:12,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:12,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:51:12,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:12,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:12,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:51:12,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:12,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-11-20 10:51:12,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:12,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:12,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:12,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:12,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:12,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:12,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:12,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:12,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:12,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:51:12,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:12,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:51:12,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:12,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:51:12,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:12,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:12,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:12,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:51:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:12,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-20 10:51:12,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:12,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:12,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:12,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:12,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:12,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:51:12,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:12,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:51:12,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:12,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-11-20 10:51:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:12,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:12,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:12,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:12,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:12,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:13,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:13,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:13,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:13,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:51:13,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:13,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:51:13,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:13,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:51:13,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:13,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:13,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:13,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:51:13,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:13,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-20 10:51:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:13,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:13,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:13,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:13,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:51:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:13,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:51:13,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:13,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-20 10:51:13,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:13,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:13,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:13,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:13,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:13,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:13,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:51:13,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:13,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:51:13,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:13,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:51:13,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:13,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:13,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:13,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:51:13,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:13,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 670 [2022-11-20 10:51:13,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:13,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:14,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:14,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:14,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:51:14,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:51:14,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:51:14,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:14,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:51:14,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-20 10:51:14,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:14,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:14,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:51:14,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:51:14,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-20 10:51:14,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:14,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:14,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:14,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:51:14,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:51:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:51:14,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:14,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:51:14,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:14,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-11-20 10:51:14,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:15,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:15,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:15,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:15,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:15,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:15,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:15,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:15,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:51:15,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:15,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:51:15,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:15,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:51:15,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:15,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:15,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:15,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:51:15,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:15,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-20 10:51:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:15,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:15,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:15,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:51:15,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:15,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:51:15,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:15,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:51:15,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:15,357 INFO L134 CoverageAnalysis]: Checked inductivity of 41881 backedges. 6686 proven. 7802 refuted. 0 times theorem prover too weak. 27393 trivial. 0 not checked. [2022-11-20 10:51:15,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:15,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056398941] [2022-11-20 10:51:15,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056398941] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:51:15,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877580630] [2022-11-20 10:51:15,358 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 10:51:15,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:51:15,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:51:15,360 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:51:15,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 10:51:16,145 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 76 check-sat command(s) [2022-11-20 10:51:16,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:51:16,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 2001 conjuncts, 217 conjunts are in the unsatisfiable core [2022-11-20 10:51:16,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:51:17,741 INFO L134 CoverageAnalysis]: Checked inductivity of 41881 backedges. 6686 proven. 7802 refuted. 0 times theorem prover too weak. 27393 trivial. 0 not checked. [2022-11-20 10:51:17,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:52:02,811 INFO L134 CoverageAnalysis]: Checked inductivity of 41881 backedges. 7863 proven. 7339 refuted. 0 times theorem prover too weak. 26679 trivial. 0 not checked. [2022-11-20 10:52:02,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877580630] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:52:02,812 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:52:02,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 41] total 54 [2022-11-20 10:52:02,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246096047] [2022-11-20 10:52:02,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:52:02,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-11-20 10:52:02,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:02,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-11-20 10:52:02,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=642, Invalid=2328, Unknown=0, NotChecked=0, Total=2970 [2022-11-20 10:52:02,818 INFO L87 Difference]: Start difference. First operand 177 states and 188 transitions. Second operand has 55 states, 54 states have (on average 2.5185185185185186) internal successors, (136), 55 states have internal predecessors, (136), 15 states have call successors, (16), 1 states have call predecessors, (16), 15 states have return successors, (38), 38 states have call predecessors, (38), 15 states have call successors, (38) [2022-11-20 10:52:03,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:52:03,002 INFO L93 Difference]: Finished difference Result 177 states and 188 transitions. [2022-11-20 10:52:03,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-20 10:52:03,002 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 2.5185185185185186) internal successors, (136), 55 states have internal predecessors, (136), 15 states have call successors, (16), 1 states have call predecessors, (16), 15 states have return successors, (38), 38 states have call predecessors, (38), 15 states have call successors, (38) Word has length 1070 [2022-11-20 10:52:03,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:52:03,005 INFO L225 Difference]: With dead ends: 177 [2022-11-20 10:52:03,005 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 10:52:03,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2572 GetRequests, 2326 SyntacticMatches, 192 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7409 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=660, Invalid=2420, Unknown=0, NotChecked=0, Total=3080 [2022-11-20 10:52:03,009 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 58 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:52:03,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 211 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:52:03,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 10:52:03,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 10:52:03,010 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) [2022-11-20 10:52:03,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 10:52:03,010 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1070 [2022-11-20 10:52:03,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:52:03,011 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 10:52:03,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 2.5185185185185186) internal successors, (136), 55 states have internal predecessors, (136), 15 states have call successors, (16), 1 states have call predecessors, (16), 15 states have return successors, (38), 38 states have call predecessors, (38), 15 states have call successors, (38) [2022-11-20 10:52:03,011 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 10:52:03,011 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 10:52:03,014 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2022-11-20 10:52:03,015 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2022-11-20 10:52:03,015 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2022-11-20 10:52:03,015 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fiboErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2022-11-20 10:52:03,016 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2022-11-20 10:52:03,017 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2022-11-20 10:52:03,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 10:52:03,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:52:03,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 10:52:04,106 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 10:52:04,107 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-20 10:52:04,107 INFO L895 garLoopResultBuilder]: At program point L31(lines 25 32) the Hoare annotation is: (<= |ULTIMATE.start_main_~x~0#1| 10) [2022-11-20 10:52:04,107 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-20 10:52:04,107 INFO L899 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2022-11-20 10:52:04,107 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-20 10:52:04,107 INFO L899 garLoopResultBuilder]: For program point L28(lines 28 30) no Hoare annotation was computed. [2022-11-20 10:52:04,108 INFO L895 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~x~0#1| 10) (<= 10 |ULTIMATE.start_main_~x~0#1|)) [2022-11-20 10:52:04,108 INFO L899 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2022-11-20 10:52:04,108 INFO L899 garLoopResultBuilder]: For program point L28-2(lines 28 30) no Hoare annotation was computed. [2022-11-20 10:52:04,108 INFO L899 garLoopResultBuilder]: For program point fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2022-11-20 10:52:04,108 INFO L899 garLoopResultBuilder]: For program point fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2022-11-20 10:52:04,108 INFO L899 garLoopResultBuilder]: For program point fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2022-11-20 10:52:04,108 INFO L899 garLoopResultBuilder]: For program point fiboFINAL(lines 7 15) no Hoare annotation was computed. [2022-11-20 10:52:04,109 INFO L899 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2022-11-20 10:52:04,109 INFO L899 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2022-11-20 10:52:04,109 INFO L895 garLoopResultBuilder]: At program point L13-2(line 13) the Hoare annotation is: (and (or (= fibo_~n |fibo_#in~n|) (not (<= |fibo_#in~n| 10))) (or (< 1 fibo_~n) (not (<= |fibo_#in~n| 2)))) [2022-11-20 10:52:04,109 INFO L899 garLoopResultBuilder]: For program point L13-3(line 13) no Hoare annotation was computed. [2022-11-20 10:52:04,109 INFO L899 garLoopResultBuilder]: For program point L13-4(line 13) no Hoare annotation was computed. [2022-11-20 10:52:04,109 INFO L899 garLoopResultBuilder]: For program point L13-5(line 13) no Hoare annotation was computed. [2022-11-20 10:52:04,110 INFO L895 garLoopResultBuilder]: At program point L13-6(line 13) the Hoare annotation is: (let ((.cse0 (= fibo_~n |fibo_#in~n|)) (.cse1 (<= 2 |fibo_#t~ret4|))) (and (or (and (<= |fibo_#t~ret4| 5) .cse0 .cse1) (not (<= 6 |fibo_#in~n|)) (not (<= |fibo_#in~n| 6))) (or (not (<= |fibo_#in~n| 4)) (not (< 3 |fibo_#in~n|)) (and .cse0 (<= |fibo_#t~ret4| 2) .cse1)) (or (and .cse0 .cse1 (<= |fibo_#t~ret4| 3)) (not (<= |fibo_#in~n| 5)) (not (<= 5 |fibo_#in~n|))) (or (and (<= |fibo_#t~ret4| 1) (<= |fibo_#in~n| fibo_~n) (<= 1 |fibo_#t~ret4|) (<= fibo_~n 3)) (not (<= |fibo_#in~n| 3))) (or (and .cse0 .cse1 (<= |fibo_#t~ret4| 21)) (not (<= 9 |fibo_#in~n|)) (not (<= |fibo_#in~n| 9))) (or (not (<= 7 |fibo_#in~n|)) (not (<= |fibo_#in~n| 7)) (and (<= |fibo_#t~ret4| 8) .cse0 .cse1)) (or (not (<= |fibo_#in~n| 8)) (not (<= 8 |fibo_#in~n|)) (and (<= |fibo_#t~ret4| 13) .cse0 .cse1)) (or (and .cse0 (< 1 fibo_~n)) (not (<= |fibo_#in~n| 2))) (or (not (<= |fibo_#in~n| 10)) (not (<= 10 |fibo_#in~n|)) (and .cse0 .cse1 (< |fibo_#t~ret4| 2147483615))))) [2022-11-20 10:52:04,110 INFO L899 garLoopResultBuilder]: For program point L13-7(line 13) no Hoare annotation was computed. [2022-11-20 10:52:04,110 INFO L899 garLoopResultBuilder]: For program point L13-8(line 13) no Hoare annotation was computed. [2022-11-20 10:52:04,110 INFO L899 garLoopResultBuilder]: For program point L13-9(line 13) no Hoare annotation was computed. [2022-11-20 10:52:04,110 INFO L899 garLoopResultBuilder]: For program point fiboEXIT(lines 7 15) no Hoare annotation was computed. [2022-11-20 10:52:04,111 INFO L899 garLoopResultBuilder]: For program point fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2022-11-20 10:52:04,111 INFO L899 garLoopResultBuilder]: For program point fiboErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2022-11-20 10:52:04,111 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 14) no Hoare annotation was computed. [2022-11-20 10:52:04,111 INFO L899 garLoopResultBuilder]: For program point L8(lines 8 14) no Hoare annotation was computed. [2022-11-20 10:52:04,111 INFO L899 garLoopResultBuilder]: For program point fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2022-11-20 10:52:04,111 INFO L902 garLoopResultBuilder]: At program point fiboENTRY(lines 7 15) the Hoare annotation is: true [2022-11-20 10:52:04,115 INFO L444 BasicCegarLoop]: Path program histogram: [6, 2, 2, 1, 1, 1, 1, 1] [2022-11-20 10:52:04,117 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 10:52:04,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:52:04 BoogieIcfgContainer [2022-11-20 10:52:04,130 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 10:52:04,130 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 10:52:04,131 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 10:52:04,131 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 10:52:04,131 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:50:26" (3/4) ... [2022-11-20 10:52:04,134 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 10:52:04,141 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo [2022-11-20 10:52:04,144 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-11-20 10:52:04,145 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-20 10:52:04,145 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 10:52:04,145 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 10:52:04,175 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 10:52:04,176 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 10:52:04,176 INFO L158 Benchmark]: Toolchain (without parser) took 98715.72ms. Allocated memory was 203.4MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 158.4MB in the beginning and 1.2GB in the end (delta: -1.0GB). Peak memory consumption was 64.4MB. Max. memory is 16.1GB. [2022-11-20 10:52:04,177 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 142.6MB. Free memory is still 84.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:52:04,177 INFO L158 Benchmark]: CACSL2BoogieTranslator took 234.40ms. Allocated memory is still 203.4MB. Free memory was 157.8MB in the beginning and 148.6MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 10:52:04,177 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.96ms. Allocated memory is still 203.4MB. Free memory was 148.6MB in the beginning and 147.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:52:04,178 INFO L158 Benchmark]: Boogie Preprocessor took 17.35ms. Allocated memory is still 203.4MB. Free memory was 147.2MB in the beginning and 145.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:52:04,178 INFO L158 Benchmark]: RCFGBuilder took 371.70ms. Allocated memory is still 203.4MB. Free memory was 145.8MB in the beginning and 135.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 10:52:04,178 INFO L158 Benchmark]: TraceAbstraction took 98006.86ms. Allocated memory was 203.4MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 134.8MB in the beginning and 1.2GB in the end (delta: -1.0GB). Peak memory consumption was 746.0MB. Max. memory is 16.1GB. [2022-11-20 10:52:04,179 INFO L158 Benchmark]: Witness Printer took 45.31ms. Allocated memory is still 1.3GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:52:04,180 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 142.6MB. Free memory is still 84.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 234.40ms. Allocated memory is still 203.4MB. Free memory was 157.8MB in the beginning and 148.6MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.96ms. Allocated memory is still 203.4MB. Free memory was 148.6MB in the beginning and 147.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 17.35ms. Allocated memory is still 203.4MB. Free memory was 147.2MB in the beginning and 145.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 371.70ms. Allocated memory is still 203.4MB. Free memory was 145.8MB in the beginning and 135.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 98006.86ms. Allocated memory was 203.4MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 134.8MB in the beginning and 1.2GB in the end (delta: -1.0GB). Peak memory consumption was 746.0MB. Max. memory is 16.1GB. * Witness Printer took 45.31ms. Allocated memory is still 1.3GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. 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: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: 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, 31 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 97.9s, OverallIterations: 15, TraceHistogramMax: 110, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.1s, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2001 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1951 mSDsluCounter, 2725 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2267 mSDsCounter, 660 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4035 IncrementalHoareTripleChecker+Invalid, 4695 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 660 mSolverCounterUnsat, 458 mSDtfsCounter, 4035 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5217 GetRequests, 4561 SyntacticMatches, 317 SemanticMatches, 339 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12362 ImplicationChecksByTransitivity, 7.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=330occurred in iteration=8, InterpolantAutomatonStates: 238, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 15 MinimizatonAttempts, 140 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 350 PreInvPairs, 374 NumberOfFragments, 192 HoareAnnotationTreeSize, 350 FomulaSimplifications, 1106 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 5 FomulaSimplificationsInter, 1469 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 86.7s InterpolantComputationTime, 4560 NumberOfCodeBlocks, 4506 NumberOfCodeBlocksAsserted, 137 NumberOfCheckSat, 6659 ConstructedInterpolants, 0 QuantifiedInterpolants, 15618 SizeOfPredicates, 29 NumberOfNonLiveVariables, 4134 ConjunctsInSsa, 416 ConjunctsInUnsatCore, 34 InterpolantComputations, 6 PerfectInterpolantSequences, 125463/153289 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: 25]: Loop Invariant Derived loop invariant: x <= 10 RESULT: Ultimate proved your program to be correct! [2022-11-20 10:52:04,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b775d943-d9c9-46eb-9512-f160d60e1e6d/bin/uautomizer-ug76WZFUDN/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