./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/Fibonacci02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/Fibonacci02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a --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 b7261cadd839cd02322bb28945f92ad1bd2170c0a65dd385996b5ff81cbb1de7 --- 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-b5237d8 [2022-11-21 16:55:24,465 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:55:24,468 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:55:24,500 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:55:24,504 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:55:24,508 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:55:24,511 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:55:24,517 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:55:24,519 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:55:24,525 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:55:24,526 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:55:24,528 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:55:24,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:55:24,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:55:24,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:55:24,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:55:24,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:55:24,541 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:55:24,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:55:24,546 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:55:24,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:55:24,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:55:24,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:55:24,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:55:24,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:55:24,556 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:55:24,556 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:55:24,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:55:24,562 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:55:24,565 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:55:24,565 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:55:24,566 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:55:24,567 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:55:24,567 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:55:24,568 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:55:24,569 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:55:24,569 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:55:24,570 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:55:24,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:55:24,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:55:24,572 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:55:24,576 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-21 16:55:24,608 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:55:24,608 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:55:24,609 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:55:24,609 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:55:24,610 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:55:24,610 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:55:24,611 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:55:24,611 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:55:24,611 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:55:24,611 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:55:24,612 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:55:24,612 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 16:55:24,612 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:55:24,612 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:55:24,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:55:24,613 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:55:24,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:55:24,613 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:55:24,614 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 16:55:24,614 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:55:24,614 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:55:24,614 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:55:24,614 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:55:24,615 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:55:24,615 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:55:24,615 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:55:24,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:55:24,616 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:55:24,616 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:55:24,616 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:55:24,617 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:55:24,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:55:24,617 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:55:24,617 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:55:24,617 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:55:24,618 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_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7261cadd839cd02322bb28945f92ad1bd2170c0a65dd385996b5ff81cbb1de7 [2022-11-21 16:55:24,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:55:24,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:55:24,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:55:24,991 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:55:24,992 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:55:24,993 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/recursive/Fibonacci02.c [2022-11-21 16:55:28,185 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:55:28,444 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:55:28,445 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/sv-benchmarks/c/recursive/Fibonacci02.c [2022-11-21 16:55:28,452 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/data/3f39b0d6d/4c07e650ced340aabe9cde739b772146/FLAG52d9340e4 [2022-11-21 16:55:28,470 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/data/3f39b0d6d/4c07e650ced340aabe9cde739b772146 [2022-11-21 16:55:28,473 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:55:28,474 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:55:28,476 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:55:28,476 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:55:28,481 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:55:28,482 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:55:28" (1/1) ... [2022-11-21 16:55:28,483 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@675ccc08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:55:28, skipping insertion in model container [2022-11-21 16:55:28,483 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:55:28" (1/1) ... [2022-11-21 16:55:28,492 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:55:28,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:55:28,674 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_a75e358d-a486-4ccf-9574-31244e48265f/sv-benchmarks/c/recursive/Fibonacci02.c[715,728] [2022-11-21 16:55:28,675 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:55:28,688 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:55:28,705 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_a75e358d-a486-4ccf-9574-31244e48265f/sv-benchmarks/c/recursive/Fibonacci02.c[715,728] [2022-11-21 16:55:28,705 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:55:28,720 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:55:28,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:55:28 WrapperNode [2022-11-21 16:55:28,721 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:55:28,722 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:55:28,722 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:55:28,722 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:55:28,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:55:28" (1/1) ... [2022-11-21 16:55:28,738 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:55:28" (1/1) ... [2022-11-21 16:55:28,755 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2022-11-21 16:55:28,755 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:55:28,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:55:28,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:55:28,756 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:55:28,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:55:28" (1/1) ... [2022-11-21 16:55:28,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:55:28" (1/1) ... [2022-11-21 16:55:28,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:55:28" (1/1) ... [2022-11-21 16:55:28,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:55:28" (1/1) ... [2022-11-21 16:55:28,771 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:55:28" (1/1) ... [2022-11-21 16:55:28,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:55:28" (1/1) ... [2022-11-21 16:55:28,774 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:55:28" (1/1) ... [2022-11-21 16:55:28,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:55:28" (1/1) ... [2022-11-21 16:55:28,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:55:28,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:55:28,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:55:28,777 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:55:28,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:55:28" (1/1) ... [2022-11-21 16:55:28,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:55:28,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:55:28,810 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:55:28,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:55:28,863 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2022-11-21 16:55:28,863 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2022-11-21 16:55:28,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:55:28,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:55:28,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:55:28,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:55:28,936 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:55:28,938 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:55:29,113 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:55:29,120 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:55:29,120 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-21 16:55:29,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:55:29 BoogieIcfgContainer [2022-11-21 16:55:29,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:55:29,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:55:29,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:55:29,138 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:55:29,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:55:28" (1/3) ... [2022-11-21 16:55:29,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55157aef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:55:29, skipping insertion in model container [2022-11-21 16:55:29,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:55:28" (2/3) ... [2022-11-21 16:55:29,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55157aef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:55:29, skipping insertion in model container [2022-11-21 16:55:29,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:55:29" (3/3) ... [2022-11-21 16:55:29,142 INFO L112 eAbstractionObserver]: Analyzing ICFG Fibonacci02.c [2022-11-21 16:55:29,165 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:55:29,166 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-21 16:55:29,280 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:55:29,289 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;@7c16a80a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:55:29,290 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-21 16:55:29,297 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 25 states have internal predecessors, (28), 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) [2022-11-21 16:55:29,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-21 16:55:29,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:55:29,307 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:55:29,308 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 16:55:29,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:55:29,314 INFO L85 PathProgramCache]: Analyzing trace with hash -108718961, now seen corresponding path program 1 times [2022-11-21 16:55:29,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:55:29,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425146676] [2022-11-21 16:55:29,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:55:29,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:55:29,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:29,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:55:29,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:55:29,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425146676] [2022-11-21 16:55:29,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425146676] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:55:29,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:55:29,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:55:29,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6873394] [2022-11-21 16:55:29,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:55:29,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:55:29,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:55:29,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:55:29,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:55:29,703 INFO L87 Difference]: Start difference. First operand has 30 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 25 states have internal predecessors, (28), 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) [2022-11-21 16:55:29,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:55:29,855 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2022-11-21 16:55:29,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:55:29,860 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 [2022-11-21 16:55:29,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:55:29,872 INFO L225 Difference]: With dead ends: 33 [2022-11-21 16:55:29,873 INFO L226 Difference]: Without dead ends: 22 [2022-11-21 16:55:29,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:55:29,888 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 38 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 39 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 [2022-11-21 16:55:29,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 39 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:55:29,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-21 16:55:29,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-21 16:55:29,943 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) [2022-11-21 16:55:29,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-11-21 16:55:29,949 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 7 [2022-11-21 16:55:29,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:55:29,950 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-11-21 16:55:29,951 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) [2022-11-21 16:55:29,951 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-11-21 16:55:29,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-21 16:55:29,954 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:55:29,954 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:55:29,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:55:29,956 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 16:55:29,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:55:29,959 INFO L85 PathProgramCache]: Analyzing trace with hash 924679547, now seen corresponding path program 1 times [2022-11-21 16:55:29,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:55:29,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092178215] [2022-11-21 16:55:29,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:55:29,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:55:29,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:30,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:55:30,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:55:30,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092178215] [2022-11-21 16:55:30,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092178215] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:55:30,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:55:30,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:55:30,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658459784] [2022-11-21 16:55:30,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:55:30,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:55:30,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:55:30,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:55:30,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:55:30,009 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) [2022-11-21 16:55:30,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:55:30,035 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2022-11-21 16:55:30,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:55:30,036 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 [2022-11-21 16:55:30,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:55:30,039 INFO L225 Difference]: With dead ends: 24 [2022-11-21 16:55:30,039 INFO L226 Difference]: Without dead ends: 22 [2022-11-21 16:55:30,040 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 [2022-11-21 16:55:30,041 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 [2022-11-21 16:55:30,042 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] [2022-11-21 16:55:30,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-21 16:55:30,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2022-11-21 16:55:30,049 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) [2022-11-21 16:55:30,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-11-21 16:55:30,051 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 8 [2022-11-21 16:55:30,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:55:30,052 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-11-21 16:55:30,052 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) [2022-11-21 16:55:30,052 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-11-21 16:55:30,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-21 16:55:30,053 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:55:30,054 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:55:30,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:55:30,054 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 16:55:30,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:55:30,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1244761165, now seen corresponding path program 1 times [2022-11-21 16:55:30,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:55:30,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585793586] [2022-11-21 16:55:30,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:55:30,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:55:30,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:30,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:55:30,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:30,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 16:55:30,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:30,296 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-21 16:55:30,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:55:30,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585793586] [2022-11-21 16:55:30,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585793586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:55:30,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:55:30,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:55:30,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137934474] [2022-11-21 16:55:30,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:55:30,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:55:30,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:55:30,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:55:30,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:55:30,300 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) [2022-11-21 16:55:30,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:55:30,352 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2022-11-21 16:55:30,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:55:30,352 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 23 [2022-11-21 16:55:30,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:55:30,354 INFO L225 Difference]: With dead ends: 36 [2022-11-21 16:55:30,354 INFO L226 Difference]: Without dead ends: 34 [2022-11-21 16:55:30,355 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 [2022-11-21 16:55:30,356 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 6 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:55:30,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 64 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:55:30,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-21 16:55:30,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2022-11-21 16:55:30,364 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) [2022-11-21 16:55:30,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2022-11-21 16:55:30,367 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 23 [2022-11-21 16:55:30,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:55:30,367 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2022-11-21 16:55:30,367 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) [2022-11-21 16:55:30,368 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-11-21 16:55:30,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-21 16:55:30,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:55:30,369 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:55:30,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 16:55:30,370 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 16:55:30,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:55:30,371 INFO L85 PathProgramCache]: Analyzing trace with hash 78572347, now seen corresponding path program 1 times [2022-11-21 16:55:30,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:55:30,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514595430] [2022-11-21 16:55:30,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:55:30,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:55:30,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:30,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:55:30,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:30,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 16:55:30,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:30,547 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-21 16:55:30,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:55:30,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514595430] [2022-11-21 16:55:30,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514595430] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:55:30,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067346691] [2022-11-21 16:55:30,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:55:30,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:55:30,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:55:30,552 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:55:30,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 16:55:30,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:30,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 16:55:30,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:55:30,743 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:55:30,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:55:30,906 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:55:30,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067346691] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:55:30,907 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:55:30,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2022-11-21 16:55:30,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931118246] [2022-11-21 16:55:30,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:55:30,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-21 16:55:30,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:55:30,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-21 16:55:30,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-11-21 16:55:30,910 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 15 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 7 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-21 16:55:31,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:55:31,357 INFO L93 Difference]: Finished difference Result 126 states and 172 transitions. [2022-11-21 16:55:31,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 16:55:31,359 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 7 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 24 [2022-11-21 16:55:31,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:55:31,361 INFO L225 Difference]: With dead ends: 126 [2022-11-21 16:55:31,361 INFO L226 Difference]: Without dead ends: 93 [2022-11-21 16:55:31,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:55:31,364 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 122 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:55:31,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 135 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 16:55:31,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-21 16:55:31,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 81. [2022-11-21 16:55:31,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 62 states have (on average 1.1129032258064515) internal successors, (69), 64 states have internal predecessors, (69), 11 states have call successors, (11), 3 states have call predecessors, (11), 6 states have return successors, (32), 13 states have call predecessors, (32), 10 states have call successors, (32) [2022-11-21 16:55:31,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 112 transitions. [2022-11-21 16:55:31,400 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 112 transitions. Word has length 24 [2022-11-21 16:55:31,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:55:31,401 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 112 transitions. [2022-11-21 16:55:31,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 7 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-21 16:55:31,401 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 112 transitions. [2022-11-21 16:55:31,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-21 16:55:31,403 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:55:31,403 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] [2022-11-21 16:55:31,419 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-21 16:55:31,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:55:31,610 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 16:55:31,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:55:31,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1267704266, now seen corresponding path program 2 times [2022-11-21 16:55:31,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:55:31,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871879837] [2022-11-21 16:55:31,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:55:31,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:55:31,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:31,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:55:31,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:31,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-21 16:55:31,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:31,824 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-21 16:55:31,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:55:31,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871879837] [2022-11-21 16:55:31,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871879837] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:55:31,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725091535] [2022-11-21 16:55:31,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:55:31,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:55:31,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:55:31,832 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:55:31,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 16:55:31,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 16:55:31,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:55:31,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 16:55:31,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:55:31,939 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-21 16:55:31,940 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:55:31,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725091535] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:55:31,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:55:31,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-21 16:55:31,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326653995] [2022-11-21 16:55:31,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:55:31,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:55:31,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:55:31,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:55:31,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:55:31,943 INFO L87 Difference]: Start difference. First operand 81 states and 112 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) [2022-11-21 16:55:31,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:55:31,979 INFO L93 Difference]: Finished difference Result 95 states and 128 transitions. [2022-11-21 16:55:31,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:55:31,980 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 30 [2022-11-21 16:55:31,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:55:31,982 INFO L225 Difference]: With dead ends: 95 [2022-11-21 16:55:31,982 INFO L226 Difference]: Without dead ends: 94 [2022-11-21 16:55:31,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:55:31,984 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 [2022-11-21 16:55:31,984 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] [2022-11-21 16:55:31,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-21 16:55:32,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 85. [2022-11-21 16:55:32,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 66 states have (on average 1.106060606060606) internal successors, (73), 66 states have internal predecessors, (73), 11 states have call successors, (11), 3 states have call predecessors, (11), 6 states have return successors, (32), 15 states have call predecessors, (32), 10 states have call successors, (32) [2022-11-21 16:55:32,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 116 transitions. [2022-11-21 16:55:32,005 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 116 transitions. Word has length 30 [2022-11-21 16:55:32,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:55:32,006 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 116 transitions. [2022-11-21 16:55:32,006 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) [2022-11-21 16:55:32,006 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 116 transitions. [2022-11-21 16:55:32,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-21 16:55:32,008 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:55:32,008 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, 1] [2022-11-21 16:55:32,019 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-21 16:55:32,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:55:32,214 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 16:55:32,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:55:32,215 INFO L85 PathProgramCache]: Analyzing trace with hash -644126528, now seen corresponding path program 1 times [2022-11-21 16:55:32,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:55:32,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436918540] [2022-11-21 16:55:32,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:55:32,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:55:32,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:32,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:55:32,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:32,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-21 16:55:32,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:32,430 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-21 16:55:32,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:55:32,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436918540] [2022-11-21 16:55:32,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436918540] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:55:32,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109795579] [2022-11-21 16:55:32,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:55:32,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:55:32,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:55:32,434 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:55:32,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 16:55:32,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:32,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 16:55:32,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:55:32,648 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:55:32,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:55:32,829 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:55:32,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109795579] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:55:32,830 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:55:32,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2022-11-21 16:55:32,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383566835] [2022-11-21 16:55:32,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:55:32,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:55:32,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:55:32,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:55:32,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:55:32,832 INFO L87 Difference]: Start difference. First operand 85 states and 116 transitions. Second operand has 19 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 15 states have internal predecessors, (57), 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) [2022-11-21 16:55:33,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:55:33,782 INFO L93 Difference]: Finished difference Result 287 states and 442 transitions. [2022-11-21 16:55:33,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-21 16:55:33,783 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 15 states have internal predecessors, (57), 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 31 [2022-11-21 16:55:33,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:55:33,788 INFO L225 Difference]: With dead ends: 287 [2022-11-21 16:55:33,791 INFO L226 Difference]: Without dead ends: 211 [2022-11-21 16:55:33,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=822, Unknown=0, NotChecked=0, Total=992 [2022-11-21 16:55:33,799 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 168 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-21 16:55:33,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 326 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-21 16:55:33,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-11-21 16:55:33,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 175. [2022-11-21 16:55:33,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 137 states have (on average 1.094890510948905) internal successors, (150), 137 states have internal predecessors, (150), 22 states have call successors, (22), 6 states have call predecessors, (22), 14 states have return successors, (83), 31 states have call predecessors, (83), 21 states have call successors, (83) [2022-11-21 16:55:33,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 255 transitions. [2022-11-21 16:55:33,831 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 255 transitions. Word has length 31 [2022-11-21 16:55:33,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:55:33,831 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 255 transitions. [2022-11-21 16:55:33,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 15 states have internal predecessors, (57), 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) [2022-11-21 16:55:33,832 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 255 transitions. [2022-11-21 16:55:33,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-21 16:55:33,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:55:33,834 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:55:33,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 16:55:34,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:55:34,040 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 16:55:34,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:55:34,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1089076188, now seen corresponding path program 1 times [2022-11-21 16:55:34,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:55:34,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788473182] [2022-11-21 16:55:34,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:55:34,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:55:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:34,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 16:55:34,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:34,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-21 16:55:34,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:34,157 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-11-21 16:55:34,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:55:34,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788473182] [2022-11-21 16:55:34,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788473182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:55:34,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:55:34,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:55:34,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618970182] [2022-11-21 16:55:34,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:55:34,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:55:34,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:55:34,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:55:34,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:55:34,160 INFO L87 Difference]: Start difference. First operand 175 states and 255 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) [2022-11-21 16:55:34,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:55:34,208 INFO L93 Difference]: Finished difference Result 192 states and 278 transitions. [2022-11-21 16:55:34,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:55:34,209 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 55 [2022-11-21 16:55:34,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:55:34,212 INFO L225 Difference]: With dead ends: 192 [2022-11-21 16:55:34,212 INFO L226 Difference]: Without dead ends: 190 [2022-11-21 16:55:34,212 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 [2022-11-21 16:55:34,213 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 5 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:55:34,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 99 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:55:34,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-11-21 16:55:34,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 182. [2022-11-21 16:55:34,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 143 states have (on average 1.0909090909090908) internal successors, (156), 142 states have internal predecessors, (156), 23 states have call successors, (23), 6 states have call predecessors, (23), 14 states have return successors, (89), 33 states have call predecessors, (89), 22 states have call successors, (89) [2022-11-21 16:55:34,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 268 transitions. [2022-11-21 16:55:34,264 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 268 transitions. Word has length 55 [2022-11-21 16:55:34,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:55:34,265 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 268 transitions. [2022-11-21 16:55:34,266 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) [2022-11-21 16:55:34,266 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 268 transitions. [2022-11-21 16:55:34,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-21 16:55:34,277 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:55:34,277 INFO L195 NwaCegarLoop]: trace histogram [11, 9, 7, 7, 7, 7, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-21 16:55:34,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 16:55:34,278 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 16:55:34,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:55:34,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1167140976, now seen corresponding path program 1 times [2022-11-21 16:55:34,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:55:34,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915537446] [2022-11-21 16:55:34,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:55:34,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:55:34,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:34,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 16:55:34,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:34,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-21 16:55:34,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:34,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-21 16:55:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:34,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:55:34,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:34,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:55:34,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:34,443 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-21 16:55:34,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:55:34,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915537446] [2022-11-21 16:55:34,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915537446] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:55:34,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23001164] [2022-11-21 16:55:34,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:55:34,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:55:34,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:55:34,446 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:55:34,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 16:55:34,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:34,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-21 16:55:34,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:55:34,758 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 116 proven. 75 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-21 16:55:34,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:55:35,045 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 35 proven. 175 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-21 16:55:35,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23001164] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:55:35,045 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:55:35,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 15, 15] total 24 [2022-11-21 16:55:35,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904226688] [2022-11-21 16:55:35,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:55:35,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-21 16:55:35,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:55:35,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-21 16:55:35,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2022-11-21 16:55:35,048 INFO L87 Difference]: Start difference. First operand 182 states and 268 transitions. Second operand has 24 states, 22 states have (on average 3.727272727272727) internal successors, (82), 17 states have internal predecessors, (82), 12 states have call successors, (18), 9 states have call predecessors, (18), 4 states have return successors, (10), 3 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-21 16:55:35,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:55:35,789 INFO L93 Difference]: Finished difference Result 497 states and 797 transitions. [2022-11-21 16:55:35,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-21 16:55:35,790 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 3.727272727272727) internal successors, (82), 17 states have internal predecessors, (82), 12 states have call successors, (18), 9 states have call predecessors, (18), 4 states have return successors, (10), 3 states have call predecessors, (10), 5 states have call successors, (10) Word has length 82 [2022-11-21 16:55:35,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:55:35,793 INFO L225 Difference]: With dead ends: 497 [2022-11-21 16:55:35,793 INFO L226 Difference]: Without dead ends: 330 [2022-11-21 16:55:35,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 155 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=227, Invalid=963, Unknown=0, NotChecked=0, Total=1190 [2022-11-21 16:55:35,797 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 244 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-21 16:55:35,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 443 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-21 16:55:35,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-11-21 16:55:35,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 302. [2022-11-21 16:55:35,827 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) [2022-11-21 16:55:35,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 414 transitions. [2022-11-21 16:55:35,831 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 414 transitions. Word has length 82 [2022-11-21 16:55:35,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:55:35,831 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 414 transitions. [2022-11-21 16:55:35,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 3.727272727272727) internal successors, (82), 17 states have internal predecessors, (82), 12 states have call successors, (18), 9 states have call predecessors, (18), 4 states have return successors, (10), 3 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-21 16:55:35,831 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 414 transitions. [2022-11-21 16:55:35,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-21 16:55:35,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:55:35,833 INFO L195 NwaCegarLoop]: trace histogram [14, 12, 10, 10, 10, 10, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-21 16:55:35,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 16:55:36,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:55:36,040 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 16:55:36,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:55:36,041 INFO L85 PathProgramCache]: Analyzing trace with hash -753402631, now seen corresponding path program 1 times [2022-11-21 16:55:36,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:55:36,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748185507] [2022-11-21 16:55:36,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:55:36,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:55:36,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:36,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 16:55:36,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:36,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-21 16:55:36,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:36,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-21 16:55:36,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:36,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:55:36,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:36,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:55:36,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:36,202 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-11-21 16:55:36,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:55:36,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748185507] [2022-11-21 16:55:36,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748185507] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:55:36,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383804469] [2022-11-21 16:55:36,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:55:36,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:55:36,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:55:36,204 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:55:36,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 16:55:36,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:36,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-21 16:55:36,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:55:36,625 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 178 proven. 184 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-21 16:55:36,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:55:37,028 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 53 proven. 330 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-21 16:55:37,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383804469] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:55:37,028 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:55:37,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 21, 21] total 25 [2022-11-21 16:55:37,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75380191] [2022-11-21 16:55:37,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:55:37,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-21 16:55:37,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:55:37,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-21 16:55:37,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2022-11-21 16:55:37,031 INFO L87 Difference]: Start difference. First operand 302 states and 414 transitions. Second operand has 25 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 17 states have internal predecessors, (85), 12 states have call successors, (17), 10 states have call predecessors, (17), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-21 16:55:37,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:55:37,801 INFO L93 Difference]: Finished difference Result 643 states and 932 transitions. [2022-11-21 16:55:37,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-21 16:55:37,801 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 17 states have internal predecessors, (85), 12 states have call successors, (17), 10 states have call predecessors, (17), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 101 [2022-11-21 16:55:37,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:55:37,809 INFO L225 Difference]: With dead ends: 643 [2022-11-21 16:55:37,809 INFO L226 Difference]: Without dead ends: 362 [2022-11-21 16:55:37,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 181 SyntacticMatches, 18 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=996, Unknown=0, NotChecked=0, Total=1260 [2022-11-21 16:55:37,815 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 265 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-21 16:55:37,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 486 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-21 16:55:37,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-11-21 16:55:37,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 325. [2022-11-21 16:55:37,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 256 states have (on average 1.09765625) internal successors, (281), 255 states have internal predecessors, (281), 42 states have call successors, (42), 12 states have call predecessors, (42), 25 states have return successors, (117), 57 states have call predecessors, (117), 41 states have call successors, (117) [2022-11-21 16:55:37,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 440 transitions. [2022-11-21 16:55:37,856 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 440 transitions. Word has length 101 [2022-11-21 16:55:37,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:55:37,857 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 440 transitions. [2022-11-21 16:55:37,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 17 states have internal predecessors, (85), 12 states have call successors, (17), 10 states have call predecessors, (17), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-21 16:55:37,857 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 440 transitions. [2022-11-21 16:55:37,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-21 16:55:37,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:55:37,860 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] [2022-11-21 16:55:37,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-21 16:55:38,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-21 16:55:38,066 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 16:55:38,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:55:38,067 INFO L85 PathProgramCache]: Analyzing trace with hash -147621069, now seen corresponding path program 2 times [2022-11-21 16:55:38,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:55:38,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373554114] [2022-11-21 16:55:38,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:55:38,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:55:38,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:38,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 16:55:38,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:38,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-21 16:55:38,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:38,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:55:38,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:38,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 16:55:38,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:38,508 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 183 proven. 116 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-21 16:55:38,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:55:38,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373554114] [2022-11-21 16:55:38,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373554114] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:55:38,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872210] [2022-11-21 16:55:38,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:55:38,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:55:38,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:55:38,516 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:55:38,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 16:55:38,584 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 16:55:38,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:55:38,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-21 16:55:38,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:55:38,734 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 178 proven. 119 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-21 16:55:38,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:55:39,093 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 178 proven. 119 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-21 16:55:39,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872210] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:55:39,093 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:55:39,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21, 21] total 26 [2022-11-21 16:55:39,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623112596] [2022-11-21 16:55:39,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:55:39,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-21 16:55:39,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:55:39,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-21 16:55:39,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2022-11-21 16:55:39,099 INFO L87 Difference]: Start difference. First operand 325 states and 440 transitions. Second operand has 26 states, 25 states have (on average 3.16) internal successors, (79), 18 states have internal predecessors, (79), 12 states have call successors, (14), 9 states have call predecessors, (14), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-21 16:55:40,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:55:40,008 INFO L93 Difference]: Finished difference Result 515 states and 703 transitions. [2022-11-21 16:55:40,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-21 16:55:40,009 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 18 states have internal predecessors, (79), 12 states have call successors, (14), 9 states have call predecessors, (14), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 86 [2022-11-21 16:55:40,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:55:40,011 INFO L225 Difference]: With dead ends: 515 [2022-11-21 16:55:40,011 INFO L226 Difference]: Without dead ends: 199 [2022-11-21 16:55:40,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 167 SyntacticMatches, 18 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 873 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=825, Invalid=2367, Unknown=0, NotChecked=0, Total=3192 [2022-11-21 16:55:40,015 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 685 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:55:40,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [685 Valid, 146 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 16:55:40,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-11-21 16:55:40,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 179. [2022-11-21 16:55:40,027 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) [2022-11-21 16:55:40,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 207 transitions. [2022-11-21 16:55:40,029 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 207 transitions. Word has length 86 [2022-11-21 16:55:40,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:55:40,030 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 207 transitions. [2022-11-21 16:55:40,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.16) internal successors, (79), 18 states have internal predecessors, (79), 12 states have call successors, (14), 9 states have call predecessors, (14), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-21 16:55:40,030 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 207 transitions. [2022-11-21 16:55:40,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-21 16:55:40,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:55:40,031 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 8, 8, 8, 8, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:55:40,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 16:55:40,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-21 16:55:40,237 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 16:55:40,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:55:40,238 INFO L85 PathProgramCache]: Analyzing trace with hash 208625464, now seen corresponding path program 3 times [2022-11-21 16:55:40,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:55:40,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630515151] [2022-11-21 16:55:40,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:55:40,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:55:40,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:40,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-21 16:55:40,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:40,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:55:40,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:40,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:55:40,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:40,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-21 16:55:40,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:40,445 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-11-21 16:55:40,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:55:40,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630515151] [2022-11-21 16:55:40,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630515151] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:55:40,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483713894] [2022-11-21 16:55:40,446 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 16:55:40,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:55:40,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:55:40,448 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:55:40,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 16:55:40,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-21 16:55:40,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:55:40,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 16:55:40,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:55:40,605 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2022-11-21 16:55:40,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:55:40,809 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-11-21 16:55:40,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483713894] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:55:40,809 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:55:40,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 13 [2022-11-21 16:55:40,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161375027] [2022-11-21 16:55:40,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:55:40,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-21 16:55:40,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:55:40,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-21 16:55:40,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-11-21 16:55:40,812 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) [2022-11-21 16:55:40,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:55:40,917 INFO L93 Difference]: Finished difference Result 182 states and 207 transitions. [2022-11-21 16:55:40,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 16:55:40,917 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 80 [2022-11-21 16:55:40,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:55:40,919 INFO L225 Difference]: With dead ends: 182 [2022-11-21 16:55:40,919 INFO L226 Difference]: Without dead ends: 181 [2022-11-21 16:55:40,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 161 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-11-21 16:55:40,920 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 12 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:55:40,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 120 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:55:40,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-11-21 16:55:40,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 179. [2022-11-21 16:55:40,943 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) [2022-11-21 16:55:40,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 205 transitions. [2022-11-21 16:55:40,947 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 205 transitions. Word has length 80 [2022-11-21 16:55:40,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:55:40,949 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 205 transitions. [2022-11-21 16:55:40,949 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) [2022-11-21 16:55:40,950 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 205 transitions. [2022-11-21 16:55:40,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-21 16:55:40,950 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:55:40,951 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 8, 8, 8, 8, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-21 16:55:40,964 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-21 16:55:41,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:55:41,165 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 16:55:41,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:55:41,166 INFO L85 PathProgramCache]: Analyzing trace with hash -2122545154, now seen corresponding path program 2 times [2022-11-21 16:55:41,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:55:41,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944201654] [2022-11-21 16:55:41,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:55:41,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:55:41,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:41,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-21 16:55:41,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:41,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:55:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:41,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:55:41,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:41,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-21 16:55:41,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:41,260 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2022-11-21 16:55:41,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:55:41,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944201654] [2022-11-21 16:55:41,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944201654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:55:41,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:55:41,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:55:41,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547899631] [2022-11-21 16:55:41,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:55:41,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:55:41,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:55:41,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:55:41,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:55:41,263 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) [2022-11-21 16:55:41,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:55:41,298 INFO L93 Difference]: Finished difference Result 180 states and 205 transitions. [2022-11-21 16:55:41,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:55:41,299 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 81 [2022-11-21 16:55:41,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:55:41,300 INFO L225 Difference]: With dead ends: 180 [2022-11-21 16:55:41,300 INFO L226 Difference]: Without dead ends: 179 [2022-11-21 16:55:41,301 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 [2022-11-21 16:55:41,301 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 [2022-11-21 16:55:41,302 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] [2022-11-21 16:55:41,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-11-21 16:55:41,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2022-11-21 16:55:41,313 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) [2022-11-21 16:55:41,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 204 transitions. [2022-11-21 16:55:41,315 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 204 transitions. Word has length 81 [2022-11-21 16:55:41,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:55:41,316 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 204 transitions. [2022-11-21 16:55:41,316 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) [2022-11-21 16:55:41,316 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 204 transitions. [2022-11-21 16:55:41,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-21 16:55:41,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:55:41,320 INFO L195 NwaCegarLoop]: trace histogram [14, 12, 9, 9, 9, 9, 8, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1] [2022-11-21 16:55:41,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 16:55:41,320 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 16:55:41,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:55:41,321 INFO L85 PathProgramCache]: Analyzing trace with hash -284873213, now seen corresponding path program 3 times [2022-11-21 16:55:41,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:55:41,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154038724] [2022-11-21 16:55:41,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:55:41,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:55:41,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:41,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 16:55:41,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:41,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:55:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:41,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:55:41,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:41,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:55:41,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:41,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 16:55:41,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:41,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-21 16:55:41,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:41,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:55:41,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:41,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:55:41,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:41,730 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 38 proven. 23 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2022-11-21 16:55:41,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:55:41,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154038724] [2022-11-21 16:55:41,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154038724] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:55:41,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837262366] [2022-11-21 16:55:41,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 16:55:41,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:55:41,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:55:41,732 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:55:41,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-21 16:55:41,794 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-21 16:55:41,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:55:41,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 16:55:41,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:55:41,885 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 62 proven. 5 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2022-11-21 16:55:41,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:55:42,108 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 62 proven. 5 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2022-11-21 16:55:42,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837262366] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:55:42,109 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:55:42,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 14 [2022-11-21 16:55:42,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70256209] [2022-11-21 16:55:42,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:55:42,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-21 16:55:42,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:55:42,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-21 16:55:42,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-11-21 16:55:42,111 INFO L87 Difference]: Start difference. First operand 179 states and 204 transitions. Second operand has 15 states, 14 states have (on average 3.642857142857143) internal successors, (51), 15 states have internal predecessors, (51), 5 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (10), 9 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-21 16:55:42,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:55:42,218 INFO L93 Difference]: Finished difference Result 179 states and 204 transitions. [2022-11-21 16:55:42,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 16:55:42,218 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.642857142857143) internal successors, (51), 15 states have internal predecessors, (51), 5 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (10), 9 states have call predecessors, (10), 5 states have call successors, (10) Word has length 114 [2022-11-21 16:55:42,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:55:42,220 INFO L225 Difference]: With dead ends: 179 [2022-11-21 16:55:42,220 INFO L226 Difference]: Without dead ends: 177 [2022-11-21 16:55:42,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 242 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-21 16:55:42,222 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 8 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 146 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 [2022-11-21 16:55:42,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 146 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:55:42,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-21 16:55:42,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2022-11-21 16:55:42,233 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) [2022-11-21 16:55:42,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 194 transitions. [2022-11-21 16:55:42,234 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 194 transitions. Word has length 114 [2022-11-21 16:55:42,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:55:42,235 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 194 transitions. [2022-11-21 16:55:42,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.642857142857143) internal successors, (51), 15 states have internal predecessors, (51), 5 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (10), 9 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-21 16:55:42,235 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 194 transitions. [2022-11-21 16:55:42,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-21 16:55:42,240 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:55:42,240 INFO L195 NwaCegarLoop]: trace histogram [19, 16, 14, 11, 11, 11, 11, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 3, 1, 1, 1, 1] [2022-11-21 16:55:42,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-21 16:55:42,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:55:42,451 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 16:55:42,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:55:42,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1425556519, now seen corresponding path program 4 times [2022-11-21 16:55:42,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:55:42,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147017564] [2022-11-21 16:55:42,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:55:42,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:55:42,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:42,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 16:55:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:43,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:55:43,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:43,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:55:43,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:43,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:55:43,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:43,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:55:43,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:43,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 16:55:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:43,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-21 16:55:43,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:43,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:55:43,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:43,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:55:43,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:43,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-21 16:55:43,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:43,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:55:43,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:43,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:55:43,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:43,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:55:43,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:43,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 16:55:43,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:43,324 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 78 proven. 129 refuted. 0 times theorem prover too weak. 743 trivial. 0 not checked. [2022-11-21 16:55:43,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:55:43,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147017564] [2022-11-21 16:55:43,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147017564] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:55:43,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429590875] [2022-11-21 16:55:43,325 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 16:55:43,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:55:43,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:55:43,326 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:55:43,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-21 16:55:43,422 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 16:55:43,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:55:43,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-21 16:55:43,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:55:43,681 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 78 proven. 129 refuted. 0 times theorem prover too weak. 743 trivial. 0 not checked. [2022-11-21 16:55:43,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:55:45,161 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 144 proven. 122 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-11-21 16:55:45,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429590875] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:55:45,165 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:55:45,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 17] total 26 [2022-11-21 16:55:45,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480966356] [2022-11-21 16:55:45,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:55:45,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-21 16:55:45,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:55:45,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-21 16:55:45,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2022-11-21 16:55:45,176 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) [2022-11-21 16:55:45,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:55:45,289 INFO L93 Difference]: Finished difference Result 178 states and 194 transitions. [2022-11-21 16:55:45,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 16:55:45,290 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 166 [2022-11-21 16:55:45,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:55:45,291 INFO L225 Difference]: With dead ends: 178 [2022-11-21 16:55:45,292 INFO L226 Difference]: Without dead ends: 177 [2022-11-21 16:55:45,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 346 SyntacticMatches, 16 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=178, Invalid=578, Unknown=0, NotChecked=0, Total=756 [2022-11-21 16:55:45,293 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 31 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:55:45,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 172 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:55:45,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-21 16:55:45,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2022-11-21 16:55:45,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 141 states have (on average 1.0283687943262412) internal successors, (145), 140 states have internal predecessors, (145), 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) [2022-11-21 16:55:45,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 190 transitions. [2022-11-21 16:55:45,305 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 190 transitions. Word has length 166 [2022-11-21 16:55:45,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:55:45,305 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 190 transitions. [2022-11-21 16:55:45,305 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) [2022-11-21 16:55:45,306 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 190 transitions. [2022-11-21 16:55:45,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2022-11-21 16:55:45,313 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:55:45,313 INFO L195 NwaCegarLoop]: trace histogram [43, 40, 35, 22, 22, 22, 22, 20, 20, 20, 20, 20, 20, 20, 19, 19, 13, 8, 1, 1, 1, 1] [2022-11-21 16:55:45,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-21 16:55:45,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:55:45,519 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 16:55:45,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:55:45,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1446613788, now seen corresponding path program 5 times [2022-11-21 16:55:45,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:55:45,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964733433] [2022-11-21 16:55:45,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:55:45,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:55:45,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:47,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-21 16:55:47,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:48,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:55:48,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:48,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:55:48,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:48,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:55:48,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:48,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:55:48,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:48,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:55:48,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:48,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:55:48,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:48,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 16:55:48,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:48,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-21 16:55:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:48,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:55:48,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:48,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:55:48,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:48,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-21 16:55:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:48,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:55:48,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:48,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:55:48,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:48,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:55:48,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:48,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 16:55:48,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:48,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-21 16:55:48,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:48,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:55:48,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:48,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:55:48,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:48,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:55:48,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:48,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:55:48,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:49,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 16:55:49,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:49,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-21 16:55:49,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:49,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:55:49,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:49,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:55:49,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:49,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-11-21 16:55:49,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:49,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:55:49,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:49,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:55:49,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:49,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:55:49,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:49,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:55:49,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:49,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:55:49,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:49,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 16:55:49,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:49,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-21 16:55:49,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:49,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:55:49,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:49,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:55:49,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:49,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-21 16:55:49,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:49,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:55:49,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:49,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:55:49,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:49,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:55:49,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:49,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 16:55:49,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:49,535 INFO L134 CoverageAnalysis]: Checked inductivity of 5965 backedges. 820 proven. 1093 refuted. 0 times theorem prover too weak. 4052 trivial. 0 not checked. [2022-11-21 16:55:49,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:55:49,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964733433] [2022-11-21 16:55:49,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964733433] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:55:49,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467969642] [2022-11-21 16:55:49,536 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 16:55:49,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:55:49,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:55:49,538 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:55:49,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-21 16:55:49,809 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2022-11-21 16:55:49,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:55:49,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 81 conjunts are in the unsatisfiable core [2022-11-21 16:55:49,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:55:50,433 INFO L134 CoverageAnalysis]: Checked inductivity of 5965 backedges. 820 proven. 1093 refuted. 0 times theorem prover too weak. 4052 trivial. 0 not checked. [2022-11-21 16:55:50,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:55:58,839 INFO L134 CoverageAnalysis]: Checked inductivity of 5965 backedges. 1149 proven. 996 refuted. 0 times theorem prover too weak. 3820 trivial. 0 not checked. [2022-11-21 16:55:58,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467969642] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:55:58,839 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:55:58,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 29] total 40 [2022-11-21 16:55:58,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791483045] [2022-11-21 16:55:58,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:55:58,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-21 16:55:58,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:55:58,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-21 16:55:58,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1273, Unknown=0, NotChecked=0, Total=1640 [2022-11-21 16:55:58,843 INFO L87 Difference]: Start difference. First operand 177 states and 190 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) [2022-11-21 16:55:58,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:55:58,987 INFO L93 Difference]: Finished difference Result 178 states and 190 transitions. [2022-11-21 16:55:58,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-21 16:55:58,988 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 409 [2022-11-21 16:55:58,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:55:58,990 INFO L225 Difference]: With dead ends: 178 [2022-11-21 16:55:58,990 INFO L226 Difference]: Without dead ends: 177 [2022-11-21 16:55:58,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 978 GetRequests, 876 SyntacticMatches, 62 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2223 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=381, Invalid=1341, Unknown=0, NotChecked=0, Total=1722 [2022-11-21 16:55:58,991 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 57 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:55:58,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 190 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:55:58,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-21 16:55:59,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2022-11-21 16:55:59,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 141 states have (on average 1.0070921985815602) internal successors, (142), 140 states have internal predecessors, (142), 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) [2022-11-21 16:55:59,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 187 transitions. [2022-11-21 16:55:59,003 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 187 transitions. Word has length 409 [2022-11-21 16:55:59,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:55:59,004 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 187 transitions. [2022-11-21 16:55:59,004 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) [2022-11-21 16:55:59,004 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 187 transitions. [2022-11-21 16:55:59,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1065 [2022-11-21 16:55:59,043 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:55:59,043 INFO L195 NwaCegarLoop]: trace histogram [109, 108, 88, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 53, 53, 34, 21, 1, 1, 1, 1] [2022-11-21 16:55:59,054 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-11-21 16:55:59,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:55:59,250 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 16:55:59,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:55:59,251 INFO L85 PathProgramCache]: Analyzing trace with hash -581544090, now seen corresponding path program 6 times [2022-11-21 16:55:59,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:55:59,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545101728] [2022-11-21 16:55:59,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:55:59,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:55:59,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:10,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:56:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:12,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:12,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:13,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:13,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:13,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:13,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:13,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:13,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:13,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:13,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:14,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:14,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:14,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:14,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:14,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:56:14,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:14,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 16:56:14,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:14,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-21 16:56:14,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:14,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:14,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:14,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:56:14,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:14,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-21 16:56:14,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:14,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:14,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:14,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:14,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:14,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:56:14,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:14,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 16:56:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:14,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-21 16:56:14,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:14,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:14,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:14,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:14,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:14,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:14,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:14,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:56:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:14,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 16:56:14,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:14,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-21 16:56:14,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:14,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:14,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:56:14,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:14,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-11-21 16:56:14,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:14,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:14,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:14,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:14,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:14,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:14,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:14,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:14,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:56:14,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:14,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 16:56:14,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:14,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-21 16:56:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:14,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:14,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:14,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:56:14,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:14,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-21 16:56:14,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:14,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:14,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:14,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:14,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:14,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:56:14,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:14,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 16:56:14,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:14,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-11-21 16:56:14,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:14,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:15,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:15,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:15,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:15,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:15,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:15,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:15,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:15,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:15,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:15,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:56:15,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:15,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 16:56:15,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:15,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-21 16:56:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:15,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:15,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:15,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:56:15,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:15,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-21 16:56:15,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:15,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:15,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:15,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:15,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:15,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:56:15,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:15,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 16:56:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:15,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-21 16:56:15,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:15,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:15,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:15,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:15,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:15,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:15,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:15,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:56:15,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:15,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 16:56:15,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:15,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-21 16:56:15,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:15,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:15,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:15,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:56:15,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:15,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 664 [2022-11-21 16:56:15,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:16,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:16,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:16,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:16,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:16,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:16,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:16,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:16,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:16,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:16,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:16,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:16,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:16,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:56:16,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:16,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 16:56:16,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:16,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-21 16:56:16,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:16,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:16,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:16,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:56:16,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:16,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-21 16:56:17,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:17,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:17,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:17,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:17,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:56:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:17,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 16:56:17,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:17,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-21 16:56:17,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:17,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:17,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:17,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:17,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:17,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:17,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:56:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:17,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 16:56:17,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:17,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-21 16:56:17,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:17,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:17,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:17,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:56:17,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:17,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-11-21 16:56:17,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:17,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:17,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:17,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:17,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:17,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:17,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:17,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:17,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:17,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:56:17,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:17,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 16:56:17,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:17,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-21 16:56:17,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:17,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:17,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:17,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:56:17,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:17,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-21 16:56:17,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:17,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:17,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:17,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:56:17,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:17,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 16:56:17,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:17,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 16:56:17,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:17,542 INFO L134 CoverageAnalysis]: Checked inductivity of 41413 backedges. 6686 proven. 7802 refuted. 0 times theorem prover too weak. 26925 trivial. 0 not checked. [2022-11-21 16:56:17,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:17,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545101728] [2022-11-21 16:56:17,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545101728] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:56:17,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11812749] [2022-11-21 16:56:17,543 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-21 16:56:17,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:56:17,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:56:17,545 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:56:17,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-21 16:56:18,282 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 83 check-sat command(s) [2022-11-21 16:56:18,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:56:18,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 1991 conjuncts, 217 conjunts are in the unsatisfiable core [2022-11-21 16:56:18,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:56:19,740 INFO L134 CoverageAnalysis]: Checked inductivity of 41413 backedges. 6686 proven. 7802 refuted. 0 times theorem prover too weak. 26925 trivial. 0 not checked. [2022-11-21 16:56:19,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:57:04,778 INFO L134 CoverageAnalysis]: Checked inductivity of 41413 backedges. 7863 proven. 7339 refuted. 0 times theorem prover too weak. 26211 trivial. 0 not checked. [2022-11-21 16:57:04,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11812749] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:57:04,779 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:57:04,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 41] total 54 [2022-11-21 16:57:04,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728441668] [2022-11-21 16:57:04,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:57:04,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-11-21 16:57:04,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:57:04,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-11-21 16:57:04,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=642, Invalid=2328, Unknown=0, NotChecked=0, Total=2970 [2022-11-21 16:57:04,783 INFO L87 Difference]: Start difference. First operand 177 states and 187 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) [2022-11-21 16:57:04,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:57:04,941 INFO L93 Difference]: Finished difference Result 177 states and 187 transitions. [2022-11-21 16:57:04,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-21 16:57:04,941 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 1064 [2022-11-21 16:57:04,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:57:04,943 INFO L225 Difference]: With dead ends: 177 [2022-11-21 16:57:04,943 INFO L226 Difference]: Without dead ends: 0 [2022-11-21 16:57:04,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2559 GetRequests, 2314 SyntacticMatches, 192 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7369 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=642, Invalid=2328, Unknown=0, NotChecked=0, Total=2970 [2022-11-21 16:57:04,946 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 57 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:57:04,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 221 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:57:04,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-21 16:57:04,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-21 16:57:04,947 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) [2022-11-21 16:57:04,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-21 16:57:04,947 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1064 [2022-11-21 16:57:04,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:57:04,948 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-21 16:57:04,948 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) [2022-11-21 16:57:04,948 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-21 16:57:04,948 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-21 16:57:04,951 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2022-11-21 16:57:04,951 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2022-11-21 16:57:04,952 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2022-11-21 16:57:04,952 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2022-11-21 16:57:04,952 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2022-11-21 16:57:04,952 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2022-11-21 16:57:04,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-21 16:57:05,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-21 16:57:05,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-21 16:57:05,948 INFO L899 garLoopResultBuilder]: For program point fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2022-11-21 16:57:05,948 INFO L899 garLoopResultBuilder]: For program point fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2022-11-21 16:57:05,948 INFO L899 garLoopResultBuilder]: For program point fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2022-11-21 16:57:05,948 INFO L899 garLoopResultBuilder]: For program point L19(lines 19 23) no Hoare annotation was computed. [2022-11-21 16:57:05,948 INFO L899 garLoopResultBuilder]: For program point fibonacciEXIT(lines 16 24) no Hoare annotation was computed. [2022-11-21 16:57:05,948 INFO L899 garLoopResultBuilder]: For program point L17(lines 17 23) no Hoare annotation was computed. [2022-11-21 16:57:05,948 INFO L899 garLoopResultBuilder]: For program point fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2022-11-21 16:57:05,948 INFO L899 garLoopResultBuilder]: For program point fibonacciFINAL(lines 16 24) no Hoare annotation was computed. [2022-11-21 16:57:05,949 INFO L899 garLoopResultBuilder]: For program point fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2022-11-21 16:57:05,949 INFO L899 garLoopResultBuilder]: For program point fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2022-11-21 16:57:05,949 INFO L902 garLoopResultBuilder]: At program point fibonacciENTRY(lines 16 24) the Hoare annotation is: true [2022-11-21 16:57:05,949 INFO L899 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2022-11-21 16:57:05,949 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2022-11-21 16:57:05,949 INFO L895 garLoopResultBuilder]: At program point L22-2(line 22) the Hoare annotation is: (and (or (not (<= |fibonacci_#in~n| 2)) (< 1 fibonacci_~n)) (or (not (<= |fibonacci_#in~n| 9)) (= fibonacci_~n |fibonacci_#in~n|))) [2022-11-21 16:57:05,949 INFO L899 garLoopResultBuilder]: For program point L22-3(line 22) no Hoare annotation was computed. [2022-11-21 16:57:05,950 INFO L899 garLoopResultBuilder]: For program point L22-4(line 22) no Hoare annotation was computed. [2022-11-21 16:57:05,950 INFO L899 garLoopResultBuilder]: For program point L22-5(line 22) no Hoare annotation was computed. [2022-11-21 16:57:05,950 INFO L895 garLoopResultBuilder]: At program point L22-6(line 22) the Hoare annotation is: (let ((.cse0 (<= 2 |fibonacci_#t~ret4|)) (.cse1 (= fibonacci_~n |fibonacci_#in~n|))) (and (or (not (<= 7 |fibonacci_#in~n|)) (not (<= |fibonacci_#in~n| 7)) (and .cse0 (<= |fibonacci_#t~ret4| 8) .cse1)) (or (not (<= |fibonacci_#in~n| 2)) (< 1 fibonacci_~n)) (or (not (<= |fibonacci_#in~n| 5)) (not (<= 5 |fibonacci_#in~n|)) (and .cse0 (<= |fibonacci_#t~ret4| 3) .cse1)) (or (and .cse0 (<= |fibonacci_#t~ret4| 21) .cse1) (not (<= |fibonacci_#in~n| 9)) (not (<= 9 |fibonacci_#in~n|))) (or (and .cse0 (<= |fibonacci_#t~ret4| 2) .cse1) (not (< 3 |fibonacci_#in~n|)) (not (<= |fibonacci_#in~n| 4))) (or (not (<= |fibonacci_#in~n| 8)) (and .cse0 (<= |fibonacci_#t~ret4| 13) .cse1) (not (<= 8 |fibonacci_#in~n|))) (or (not (<= |fibonacci_#in~n| 3)) (and (<= 1 |fibonacci_#t~ret4|) (<= |fibonacci_#t~ret4| 1) .cse1)) (or (and .cse0 (<= |fibonacci_#t~ret4| 5) .cse1) (not (<= |fibonacci_#in~n| 6)) (not (<= 6 |fibonacci_#in~n|))))) [2022-11-21 16:57:05,950 INFO L899 garLoopResultBuilder]: For program point L22-7(line 22) no Hoare annotation was computed. [2022-11-21 16:57:05,950 INFO L899 garLoopResultBuilder]: For program point L22-8(line 22) no Hoare annotation was computed. [2022-11-21 16:57:05,951 INFO L899 garLoopResultBuilder]: For program point L22-9(line 22) no Hoare annotation was computed. [2022-11-21 16:57:05,951 INFO L899 garLoopResultBuilder]: For program point L33(line 33) no Hoare annotation was computed. [2022-11-21 16:57:05,951 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-21 16:57:05,951 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-21 16:57:05,951 INFO L899 garLoopResultBuilder]: For program point L30(lines 30 34) no Hoare annotation was computed. [2022-11-21 16:57:05,951 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-21 16:57:05,952 INFO L895 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: (and (<= 9 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 9)) [2022-11-21 16:57:05,952 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-21 16:57:05,952 INFO L899 garLoopResultBuilder]: For program point L29-1(line 29) no Hoare annotation was computed. [2022-11-21 16:57:05,952 INFO L895 garLoopResultBuilder]: At program point L27(lines 27 35) the Hoare annotation is: (<= |ULTIMATE.start_main_~x~0#1| 9) [2022-11-21 16:57:05,956 INFO L444 BasicCegarLoop]: Path program histogram: [6, 3, 2, 1, 1, 1, 1, 1] [2022-11-21 16:57:05,958 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 16:57:05,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 04:57:05 BoogieIcfgContainer [2022-11-21 16:57:05,977 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 16:57:05,977 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 16:57:05,977 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 16:57:05,978 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 16:57:05,978 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:55:29" (3/4) ... [2022-11-21 16:57:05,982 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-21 16:57:05,990 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibonacci [2022-11-21 16:57:05,996 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-11-21 16:57:05,997 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-21 16:57:05,997 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-21 16:57:05,997 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-21 16:57:06,036 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/witness.graphml [2022-11-21 16:57:06,036 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 16:57:06,037 INFO L158 Benchmark]: Toolchain (without parser) took 97562.35ms. Allocated memory was 138.4MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 108.7MB in the beginning and 951.0MB in the end (delta: -842.3MB). Peak memory consumption was 292.1MB. Max. memory is 16.1GB. [2022-11-21 16:57:06,037 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 111.1MB. Free memory is still 65.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 16:57:06,038 INFO L158 Benchmark]: CACSL2BoogieTranslator took 245.14ms. Allocated memory is still 138.4MB. Free memory was 108.3MB in the beginning and 98.7MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 16:57:06,038 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.76ms. Allocated memory is still 138.4MB. Free memory was 98.7MB in the beginning and 97.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 16:57:06,039 INFO L158 Benchmark]: Boogie Preprocessor took 19.66ms. Allocated memory is still 138.4MB. Free memory was 97.0MB in the beginning and 96.1MB in the end (delta: 903.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 16:57:06,040 INFO L158 Benchmark]: RCFGBuilder took 355.72ms. Allocated memory is still 138.4MB. Free memory was 96.1MB in the beginning and 86.1MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 16:57:06,041 INFO L158 Benchmark]: TraceAbstraction took 96842.65ms. Allocated memory was 138.4MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 85.7MB in the beginning and 953.1MB in the end (delta: -867.5MB). Peak memory consumption was 266.9MB. Max. memory is 16.1GB. [2022-11-21 16:57:06,041 INFO L158 Benchmark]: Witness Printer took 58.70ms. Allocated memory is still 1.3GB. Free memory was 953.1MB in the beginning and 951.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 16:57:06,045 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 111.1MB. Free memory is still 65.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 245.14ms. Allocated memory is still 138.4MB. Free memory was 108.3MB in the beginning and 98.7MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.76ms. Allocated memory is still 138.4MB. Free memory was 98.7MB in the beginning and 97.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 19.66ms. Allocated memory is still 138.4MB. Free memory was 97.0MB in the beginning and 96.1MB in the end (delta: 903.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 355.72ms. Allocated memory is still 138.4MB. Free memory was 96.1MB in the beginning and 86.1MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 96842.65ms. Allocated memory was 138.4MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 85.7MB in the beginning and 953.1MB in the end (delta: -867.5MB). Peak memory consumption was 266.9MB. Max. memory is 16.1GB. * Witness Printer took 58.70ms. Allocated memory is still 1.3GB. Free memory was 953.1MB in the beginning and 951.0MB in the end (delta: 2.1MB). 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: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: 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, 30 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 96.7s, OverallIterations: 16, TraceHistogramMax: 109, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.1s, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1776 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1720 mSDsluCounter, 2723 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2264 mSDsCounter, 596 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3628 IncrementalHoareTripleChecker+Invalid, 4224 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 596 mSolverCounterUnsat, 459 mSDtfsCounter, 3628 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5262 GetRequests, 4599 SyntacticMatches, 322 SemanticMatches, 341 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11954 ImplicationChecksByTransitivity, 7.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=325occurred in iteration=9, InterpolantAutomatonStates: 237, 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, 16 MinimizatonAttempts, 159 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 389 PreInvPairs, 413 NumberOfFragments, 166 HoareAnnotationTreeSize, 389 FomulaSimplifications, 995 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 5 FomulaSimplificationsInter, 1465 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 85.6s InterpolantComputationTime, 4548 NumberOfCodeBlocks, 4437 NumberOfCodeBlocksAsserted, 148 NumberOfCheckSat, 6668 ConstructedInterpolants, 0 QuantifiedInterpolants, 15598 SizeOfPredicates, 29 NumberOfNonLiveVariables, 4088 ConjunctsInSsa, 416 ConjunctsInUnsatCore, 37 InterpolantComputations, 6 PerfectInterpolantSequences, 122822/150563 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: 27]: Loop Invariant Derived loop invariant: x <= 9 RESULT: Ultimate proved your program to be correct! [2022-11-21 16:57:06,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a75e358d-a486-4ccf-9574-31244e48265f/bin/uautomizer-vX5HgA9Q3a/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