./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 5e519f3a 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_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 24cc882af4ec42ba94c424c5a1ed92d402543c0fe2bf17d3fca0ca1cd73500b7 --- 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-5e519f3 [2022-11-02 20:07:51,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:07:51,560 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:07:51,608 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:07:51,609 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:07:51,613 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:07:51,615 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:07:51,621 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:07:51,624 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:07:51,633 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:07:51,634 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:07:51,635 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:07:51,636 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:07:51,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:07:51,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:07:51,644 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:07:51,646 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:07:51,647 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:07:51,649 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:07:51,656 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:07:51,659 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:07:51,661 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:07:51,665 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:07:51,666 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:07:51,676 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:07:51,676 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:07:51,676 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:07:51,679 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:07:51,679 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:07:51,681 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:07:51,682 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:07:51,683 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:07:51,685 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:07:51,687 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:07:51,688 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:07:51,688 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:07:51,689 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:07:51,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:07:51,690 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:07:51,691 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:07:51,692 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:07:51,692 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-11-02 20:07:51,738 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:07:51,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:07:51,739 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:07:51,739 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:07:51,741 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:07:51,741 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:07:51,742 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:07:51,742 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-02 20:07:51,742 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-02 20:07:51,743 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-02 20:07:51,744 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-02 20:07:51,744 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-02 20:07:51,744 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-02 20:07:51,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:07:51,745 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:07:51,745 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:07:51,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:07:51,746 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:07:51,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:07:51,746 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-02 20:07:51,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-02 20:07:51,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-02 20:07:51,747 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:07:51,749 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:07:51,749 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-02 20:07:51,749 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:07:51,750 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-02 20:07:51,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:07:51,750 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:07:51,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:07:51,751 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:07:51,752 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-02 20:07:51,752 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24cc882af4ec42ba94c424c5a1ed92d402543c0fe2bf17d3fca0ca1cd73500b7 [2022-11-02 20:07:52,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:07:52,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:07:52,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:07:52,126 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:07:52,127 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:07:52,128 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2022-11-02 20:07:52,206 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/data/f3914872e/de3046e862394b628722352330751915/FLAGf432f3679 [2022-11-02 20:07:52,669 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:07:52,670 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2022-11-02 20:07:52,686 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/data/f3914872e/de3046e862394b628722352330751915/FLAGf432f3679 [2022-11-02 20:07:53,056 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/data/f3914872e/de3046e862394b628722352330751915 [2022-11-02 20:07:53,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:07:53,060 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:07:53,062 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:07:53,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:07:53,066 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:07:53,067 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:07:53" (1/1) ... [2022-11-02 20:07:53,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d5c43a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:53, skipping insertion in model container [2022-11-02 20:07:53,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:07:53" (1/1) ... [2022-11-02 20:07:53,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:07:53,094 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:07:53,414 WARN L230 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_203db2a0-9b0e-437d-beae-116084a8e796/sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c[946,959] [2022-11-02 20:07:53,416 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:07:53,428 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:07:53,458 WARN L230 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_203db2a0-9b0e-437d-beae-116084a8e796/sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c[946,959] [2022-11-02 20:07:53,462 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:07:53,481 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:07:53,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:53 WrapperNode [2022-11-02 20:07:53,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:07:53,485 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:07:53,486 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:07:53,486 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:07:53,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:53" (1/1) ... [2022-11-02 20:07:53,504 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:53" (1/1) ... [2022-11-02 20:07:53,525 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-11-02 20:07:53,526 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:07:53,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:07:53,527 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:07:53,528 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:07:53,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:53" (1/1) ... [2022-11-02 20:07:53,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:53" (1/1) ... [2022-11-02 20:07:53,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:53" (1/1) ... [2022-11-02 20:07:53,541 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:53" (1/1) ... [2022-11-02 20:07:53,546 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:53" (1/1) ... [2022-11-02 20:07:53,551 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:53" (1/1) ... [2022-11-02 20:07:53,558 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:53" (1/1) ... [2022-11-02 20:07:53,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:53" (1/1) ... [2022-11-02 20:07:53,566 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:07:53,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:07:53,569 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:07:53,570 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:07:53,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:53" (1/1) ... [2022-11-02 20:07:53,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:53,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:53,612 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:53,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-02 20:07:53,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:07:53,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:07:53,668 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2022-11-02 20:07:53,668 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2022-11-02 20:07:53,669 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2022-11-02 20:07:53,669 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2022-11-02 20:07:53,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:07:53,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:07:53,736 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:07:53,739 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:07:53,885 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:07:53,892 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:07:53,892 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 20:07:53,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:07:53 BoogieIcfgContainer [2022-11-02 20:07:53,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:07:53,896 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-02 20:07:53,896 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-02 20:07:53,901 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-02 20:07:53,902 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 20:07:53,903 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 02.11 08:07:53" (1/3) ... [2022-11-02 20:07:53,904 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@58345eaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.11 08:07:53, skipping insertion in model container [2022-11-02 20:07:53,904 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 20:07:53,904 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:53" (2/3) ... [2022-11-02 20:07:53,905 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@58345eaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.11 08:07:53, skipping insertion in model container [2022-11-02 20:07:53,905 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 20:07:53,905 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:07:53" (3/3) ... [2022-11-02 20:07:53,907 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_5-1.c [2022-11-02 20:07:53,972 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-02 20:07:53,973 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-02 20:07:53,973 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-02 20:07:53,973 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-02 20:07:53,973 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-02 20:07:53,973 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-02 20:07:53,974 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-02 20:07:53,974 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-02 20:07:53,979 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-02 20:07:54,006 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-11-02 20:07:54,007 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:07:54,007 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:07:54,014 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-02 20:07:54,015 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:54,015 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-02 20:07:54,016 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-02 20:07:54,020 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-11-02 20:07:54,020 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:07:54,020 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:07:54,021 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-02 20:07:54,021 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:54,030 INFO L748 eck$LassoCheckResult]: Stem: 15#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 14#L39true call main_#t~ret8#1 := fibo1(main_~x~0#1);< 4#fibo1ENTRYtrue [2022-11-02 20:07:54,031 INFO L750 eck$LassoCheckResult]: Loop: 4#fibo1ENTRYtrue ~n := #in~n; 8#L10true assume !(~n < 1); 7#L12true assume !(1 == ~n); 9#L15true call #t~ret4 := fibo2(~n - 1);< 13#fibo2ENTRYtrue ~n := #in~n; 11#L20true assume !(~n < 1); 16#L22true assume !(1 == ~n); 22#L25true call #t~ret6 := fibo1(~n - 1);< 4#fibo1ENTRYtrue [2022-11-02 20:07:54,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:54,037 INFO L85 PathProgramCache]: Analyzing trace with hash 29896, now seen corresponding path program 1 times [2022-11-02 20:07:54,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:54,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271719628] [2022-11-02 20:07:54,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:54,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:54,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:07:54,191 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:07:54,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:07:54,242 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:07:54,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:54,247 INFO L85 PathProgramCache]: Analyzing trace with hash 181289832, now seen corresponding path program 1 times [2022-11-02 20:07:54,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:54,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012032522] [2022-11-02 20:07:54,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:54,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:54,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:07:54,286 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:07:54,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:07:54,305 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:07:54,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:54,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1313669423, now seen corresponding path program 1 times [2022-11-02 20:07:54,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:54,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634292351] [2022-11-02 20:07:54,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:54,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:54,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:07:54,364 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:07:54,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:07:54,392 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:07:54,719 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 20:07:54,720 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 20:07:54,720 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 20:07:54,720 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 20:07:54,721 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-02 20:07:54,721 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:54,721 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 20:07:54,721 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 20:07:54,722 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration1_Loop [2022-11-02 20:07:54,722 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 20:07:54,722 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 20:07:54,739 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:54,750 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:54,753 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:54,756 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:54,759 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:54,762 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:54,765 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:54,768 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:54,836 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 20:07:54,837 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-02 20:07:54,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:54,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:54,843 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:54,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-02 20:07:54,848 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:07:54,849 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:07:54,878 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:07:54,878 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:07:54,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2022-11-02 20:07:54,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:54,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:54,912 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:54,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-02 20:07:54,915 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:07:54,915 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:07:54,934 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:07:54,934 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:07:54,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2022-11-02 20:07:54,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:54,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:54,966 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:54,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-02 20:07:54,976 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:07:54,976 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:07:54,996 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:07:54,996 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:07:55,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:55,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:55,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:55,023 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:55,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-02 20:07:55,040 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:07:55,041 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:07:55,058 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:07:55,059 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:07:55,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:55,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:55,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:55,087 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:55,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-02 20:07:55,090 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:07:55,091 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:07:55,109 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:07:55,110 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:07:55,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:55,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:55,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:55,147 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:55,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-02 20:07:55,152 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:07:55,153 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:07:55,167 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:07:55,168 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:07:55,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:55,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:55,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:55,208 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:55,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-02 20:07:55,211 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:07:55,211 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:07:55,252 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:07:55,252 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:07:55,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:55,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:55,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:55,278 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:55,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-02 20:07:55,282 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:07:55,282 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:07:55,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:55,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:55,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:55,321 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:55,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-02 20:07:55,324 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-02 20:07:55,324 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:07:55,427 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-02 20:07:55,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:55,436 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 20:07:55,436 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 20:07:55,436 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 20:07:55,436 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 20:07:55,436 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-02 20:07:55,436 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:55,436 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 20:07:55,436 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 20:07:55,436 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration1_Loop [2022-11-02 20:07:55,436 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 20:07:55,437 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 20:07:55,438 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:55,442 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:55,445 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:55,448 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:55,451 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:55,455 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:55,464 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:55,468 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:55,521 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 20:07:55,527 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-02 20:07:55,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:55,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:55,530 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:55,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-02 20:07:55,539 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:07:55,554 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:07:55,554 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:07:55,555 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:07:55,555 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:07:55,555 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:07:55,557 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:07:55,558 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:07:55,562 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:07:55,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2022-11-02 20:07:55,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:55,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:55,588 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:55,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-02 20:07:55,589 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:07:55,601 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:07:55,601 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:07:55,602 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:07:55,602 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:07:55,602 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:07:55,603 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:07:55,603 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:07:55,617 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:07:55,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:55,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:55,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:55,642 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:55,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-02 20:07:55,645 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:07:55,656 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:07:55,656 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:07:55,656 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:07:55,657 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:07:55,657 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:07:55,657 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:07:55,658 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:07:55,660 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:07:55,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:55,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:55,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:55,686 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:55,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-02 20:07:55,699 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:07:55,713 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:07:55,713 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:07:55,713 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:07:55,713 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:07:55,713 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:07:55,715 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:07:55,715 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:07:55,738 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:07:55,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:55,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:55,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:55,773 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:55,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-02 20:07:55,777 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:07:55,789 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:07:55,789 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:07:55,789 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:07:55,789 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:07:55,789 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:07:55,790 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:07:55,790 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:07:55,801 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:07:55,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:55,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:55,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:55,828 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:55,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-02 20:07:55,831 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:07:55,842 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:07:55,842 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:07:55,843 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:07:55,843 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:07:55,843 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:07:55,846 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:07:55,847 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:07:55,876 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-02 20:07:55,881 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-02 20:07:55,881 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-02 20:07:55,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:55,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:55,887 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:55,891 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-02 20:07:55,892 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-02 20:07:55,892 INFO L513 LassoAnalysis]: Proved termination. [2022-11-02 20:07:55,892 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2022-11-02 20:07:55,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-02 20:07:55,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:55,934 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-02 20:07:55,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:55,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:55,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:07:55,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:56,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:56,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:07:56,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:56,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:56,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:56,225 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2022-11-02 20:07:56,227 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:56,435 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5). Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 84 states and 116 transitions. Complement of second has 24 states. [2022-11-02 20:07:56,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2022-11-02 20:07:56,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:56,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2022-11-02 20:07:56,446 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2022-11-02 20:07:56,447 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:07:56,447 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2022-11-02 20:07:56,448 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:07:56,448 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 16 letters. [2022-11-02 20:07:56,448 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:07:56,449 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 116 transitions. [2022-11-02 20:07:56,456 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-11-02 20:07:56,471 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 61 states and 82 transitions. [2022-11-02 20:07:56,472 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2022-11-02 20:07:56,473 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2022-11-02 20:07:56,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 82 transitions. [2022-11-02 20:07:56,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 20:07:56,475 INFO L218 hiAutomatonCegarLoop]: Abstraction has 61 states and 82 transitions. [2022-11-02 20:07:56,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 82 transitions. [2022-11-02 20:07:56,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2022-11-02 20:07:56,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 38 states have internal predecessors, (47), 12 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (13), 7 states have call predecessors, (13), 10 states have call successors, (13) [2022-11-02 20:07:56,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2022-11-02 20:07:56,511 INFO L240 hiAutomatonCegarLoop]: Abstraction has 54 states and 72 transitions. [2022-11-02 20:07:56,512 INFO L428 stractBuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2022-11-02 20:07:56,512 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-02 20:07:56,512 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2022-11-02 20:07:56,514 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-11-02 20:07:56,514 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:07:56,514 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:07:56,515 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:56,515 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:56,516 INFO L748 eck$LassoCheckResult]: Stem: 195#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 196#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 213#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 212#fibo1ENTRY ~n := #in~n; 214#L10 assume !(~n < 1); 225#L12 assume !(1 == ~n); 207#L15 call #t~ret4 := fibo2(~n - 1);< 229#fibo2ENTRY ~n := #in~n; 235#L20 assume !(~n < 1); 248#L22 assume !(1 == ~n); 203#L25 call #t~ret6 := fibo1(~n - 1);< 215#fibo1ENTRY ~n := #in~n; 217#L10 assume ~n < 1;#res := 0; 204#fibo1FINAL assume true; 205#fibo1EXIT >#46#return; 206#L25-1 [2022-11-02 20:07:56,516 INFO L750 eck$LassoCheckResult]: Loop: 206#L25-1 call #t~ret7 := fibo1(~n - 2);< 211#fibo1ENTRY ~n := #in~n; 239#L10 assume !(~n < 1); 240#L12 assume !(1 == ~n); 210#L15 call #t~ret4 := fibo2(~n - 1);< 219#fibo2ENTRY ~n := #in~n; 242#L20 assume !(~n < 1); 241#L22 assume !(1 == ~n); 218#L25 call #t~ret6 := fibo1(~n - 1);< 211#fibo1ENTRY ~n := #in~n; 239#L10 assume ~n < 1;#res := 0; 237#fibo1FINAL assume true; 238#fibo1EXIT >#46#return; 206#L25-1 [2022-11-02 20:07:56,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:56,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1888024054, now seen corresponding path program 1 times [2022-11-02 20:07:56,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:56,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916022450] [2022-11-02 20:07:56,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:56,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:56,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:56,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 20:07:56,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:56,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:07:56,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:07:56,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916022450] [2022-11-02 20:07:56,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916022450] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:56,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:56,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:07:56,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705937748] [2022-11-02 20:07:56,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:56,678 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-02 20:07:56,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:56,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1730504828, now seen corresponding path program 1 times [2022-11-02 20:07:56,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:56,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776235258] [2022-11-02 20:07:56,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:56,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:56,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:56,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:07:56,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:56,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:07:56,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:07:56,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776235258] [2022-11-02 20:07:56,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776235258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:56,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:56,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:07:56,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247191832] [2022-11-02 20:07:56,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:56,770 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-02 20:07:56,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:07:56,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:07:56,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:07:56,775 INFO L87 Difference]: Start difference. First operand 54 states and 72 transitions. cyclomatic complexity: 20 Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:07:56,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:56,862 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2022-11-02 20:07:56,862 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2022-11-02 20:07:56,865 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-11-02 20:07:56,868 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 66 states and 86 transitions. [2022-11-02 20:07:56,868 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2022-11-02 20:07:56,868 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2022-11-02 20:07:56,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 86 transitions. [2022-11-02 20:07:56,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 20:07:56,869 INFO L218 hiAutomatonCegarLoop]: Abstraction has 66 states and 86 transitions. [2022-11-02 20:07:56,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 86 transitions. [2022-11-02 20:07:56,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2022-11-02 20:07:56,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 38 states have (on average 1.263157894736842) internal successors, (48), 42 states have internal predecessors, (48), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (16), 7 states have call predecessors, (16), 10 states have call successors, (16) [2022-11-02 20:07:56,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2022-11-02 20:07:56,878 INFO L240 hiAutomatonCegarLoop]: Abstraction has 58 states and 76 transitions. [2022-11-02 20:07:56,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:07:56,879 INFO L428 stractBuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2022-11-02 20:07:56,880 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-02 20:07:56,880 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 76 transitions. [2022-11-02 20:07:56,881 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-11-02 20:07:56,881 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:07:56,881 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:07:56,882 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:56,882 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:56,883 INFO L748 eck$LassoCheckResult]: Stem: 340#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 341#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 359#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 358#fibo1ENTRY ~n := #in~n; 360#L10 assume !(~n < 1); 370#L12 assume !(1 == ~n); 354#L15 call #t~ret4 := fibo2(~n - 1);< 377#fibo2ENTRY ~n := #in~n; 381#L20 assume !(~n < 1); 397#L22 assume !(1 == ~n); 348#L25 call #t~ret6 := fibo1(~n - 1);< 361#fibo1ENTRY ~n := #in~n; 363#L10 assume !(~n < 1); 386#L12 assume 1 == ~n;#res := 1; 385#fibo1FINAL assume true; 384#fibo1EXIT >#46#return; 350#L25-1 [2022-11-02 20:07:56,883 INFO L750 eck$LassoCheckResult]: Loop: 350#L25-1 call #t~ret7 := fibo1(~n - 2);< 357#fibo1ENTRY ~n := #in~n; 374#L10 assume !(~n < 1); 368#L12 assume !(1 == ~n); 356#L15 call #t~ret4 := fibo2(~n - 1);< 390#fibo2ENTRY ~n := #in~n; 389#L20 assume !(~n < 1); 387#L22 assume !(1 == ~n); 351#L25 call #t~ret6 := fibo1(~n - 1);< 357#fibo1ENTRY ~n := #in~n; 374#L10 assume !(~n < 1); 368#L12 assume 1 == ~n;#res := 1; 369#fibo1FINAL assume true; 383#fibo1EXIT >#46#return; 350#L25-1 [2022-11-02 20:07:56,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:56,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1600771562, now seen corresponding path program 1 times [2022-11-02 20:07:56,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:56,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474643732] [2022-11-02 20:07:56,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:56,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:56,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 20:07:57,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:57,062 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:57,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:07:57,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474643732] [2022-11-02 20:07:57,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474643732] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:07:57,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156661156] [2022-11-02 20:07:57,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:57,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:07:57,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:57,067 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:07:57,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-02 20:07:57,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:57,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:07:57,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:57,207 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:57,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:07:57,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:57,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156661156] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:07:57,419 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:07:57,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-11-02 20:07:57,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521011003] [2022-11-02 20:07:57,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:07:57,420 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-02 20:07:57,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:57,421 INFO L85 PathProgramCache]: Analyzing trace with hash 2106067024, now seen corresponding path program 1 times [2022-11-02 20:07:57,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:57,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191362302] [2022-11-02 20:07:57,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:57,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:57,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:07:57,429 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:07:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:07:57,436 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:07:57,699 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 20:07:57,700 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 20:07:57,700 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 20:07:57,700 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 20:07:57,700 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-02 20:07:57,700 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:57,700 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 20:07:57,700 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 20:07:57,700 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration3_Loop [2022-11-02 20:07:57,700 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 20:07:57,701 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 20:07:57,702 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:57,705 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:57,709 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:57,711 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:57,714 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:57,723 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:57,727 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:57,730 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:57,795 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 20:07:57,795 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-02 20:07:57,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:57,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:57,796 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:57,808 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:07:57,808 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:07:57,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-02 20:07:57,831 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:07:57,831 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:07:57,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:57,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:57,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:57,867 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:57,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-11-02 20:07:57,872 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:07:57,872 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:07:57,884 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:07:57,885 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:07:57,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:57,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:57,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:57,919 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:57,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-11-02 20:07:57,921 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:07:57,921 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:07:57,955 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:07:57,955 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:07:57,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:57,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:57,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:57,999 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:58,008 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:07:58,008 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:07:58,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-11-02 20:07:58,042 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:07:58,043 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:07:58,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:58,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:58,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:58,085 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:58,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-11-02 20:07:58,089 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:07:58,089 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:07:58,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:58,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:58,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:58,126 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:58,136 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-02 20:07:58,136 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:07:58,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-11-02 20:07:59,450 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-02 20:07:59,455 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2022-11-02 20:07:59,455 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 20:07:59,455 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 20:07:59,455 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 20:07:59,455 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 20:07:59,455 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-02 20:07:59,456 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:59,456 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 20:07:59,456 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 20:07:59,456 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration3_Loop [2022-11-02 20:07:59,456 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 20:07:59,456 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 20:07:59,458 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:59,464 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:59,468 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:59,479 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:59,492 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:59,496 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:59,500 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:59,509 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:07:59,592 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 20:07:59,593 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-02 20:07:59,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:59,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:59,595 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:59,599 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:07:59,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-11-02 20:07:59,613 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:07:59,613 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:07:59,613 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:07:59,613 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:07:59,613 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:07:59,614 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:07:59,614 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:07:59,624 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:07:59,648 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2022-11-02 20:07:59,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:59,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:59,650 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:59,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-11-02 20:07:59,652 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:07:59,663 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:07:59,664 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:07:59,664 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:07:59,664 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:07:59,664 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:07:59,665 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:07:59,665 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:07:59,667 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:07:59,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2022-11-02 20:07:59,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:59,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:59,693 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:59,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-11-02 20:07:59,698 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:07:59,711 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:07:59,712 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:07:59,712 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:07:59,712 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:07:59,712 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:07:59,713 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:07:59,713 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:07:59,727 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:07:59,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:59,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:59,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:59,772 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:59,779 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:07:59,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-11-02 20:07:59,793 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:07:59,794 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:07:59,794 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:07:59,794 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:07:59,794 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:07:59,796 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:07:59,796 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:07:59,814 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-02 20:07:59,821 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-02 20:07:59,821 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-02 20:07:59,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:07:59,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:59,852 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:59,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-11-02 20:07:59,855 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-02 20:07:59,855 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-02 20:07:59,855 INFO L513 LassoAnalysis]: Proved termination. [2022-11-02 20:07:59,855 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2022-11-02 20:07:59,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2022-11-02 20:07:59,895 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-02 20:07:59,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:59,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:59,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:07:59,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:00,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 20:08:00,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:00,269 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:00,272 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2022-11-02 20:08:00,272 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20 Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:08:00,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:00,841 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 191 states and 263 transitions. Complement of second has 40 states. [2022-11-02 20:08:00,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 2 stem states 9 non-accepting loop states 1 accepting loop states [2022-11-02 20:08:00,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:08:00,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 73 transitions. [2022-11-02 20:08:00,858 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 14 letters. [2022-11-02 20:08:00,859 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:08:00,859 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 30 letters. Loop has 14 letters. [2022-11-02 20:08:00,860 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:08:00,860 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 28 letters. [2022-11-02 20:08:00,861 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:08:00,862 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 263 transitions. [2022-11-02 20:08:00,868 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-11-02 20:08:00,877 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 169 states and 237 transitions. [2022-11-02 20:08:00,877 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2022-11-02 20:08:00,878 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2022-11-02 20:08:00,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 237 transitions. [2022-11-02 20:08:00,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 20:08:00,880 INFO L218 hiAutomatonCegarLoop]: Abstraction has 169 states and 237 transitions. [2022-11-02 20:08:00,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 237 transitions. [2022-11-02 20:08:00,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2022-11-02 20:08:00,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 95 states have (on average 1.2842105263157895) internal successors, (122), 102 states have internal predecessors, (122), 35 states have call successors, (36), 19 states have call predecessors, (36), 22 states have return successors, (48), 30 states have call predecessors, (48), 33 states have call successors, (48) [2022-11-02 20:08:00,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 206 transitions. [2022-11-02 20:08:00,896 INFO L240 hiAutomatonCegarLoop]: Abstraction has 152 states and 206 transitions. [2022-11-02 20:08:00,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:00,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 20:08:00,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:08:00,897 INFO L87 Difference]: Start difference. First operand 152 states and 206 transitions. Second operand has 16 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:08:01,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:01,156 INFO L93 Difference]: Finished difference Result 191 states and 254 transitions. [2022-11-02 20:08:01,157 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 254 transitions. [2022-11-02 20:08:01,161 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-11-02 20:08:01,166 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 185 states and 246 transitions. [2022-11-02 20:08:01,166 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 122 [2022-11-02 20:08:01,167 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 122 [2022-11-02 20:08:01,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 185 states and 246 transitions. [2022-11-02 20:08:01,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 20:08:01,167 INFO L218 hiAutomatonCegarLoop]: Abstraction has 185 states and 246 transitions. [2022-11-02 20:08:01,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states and 246 transitions. [2022-11-02 20:08:01,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 172. [2022-11-02 20:08:01,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 106 states have (on average 1.2547169811320755) internal successors, (133), 116 states have internal predecessors, (133), 40 states have call successors, (42), 21 states have call predecessors, (42), 26 states have return successors, (56), 34 states have call predecessors, (56), 37 states have call successors, (56) [2022-11-02 20:08:01,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 231 transitions. [2022-11-02 20:08:01,195 INFO L240 hiAutomatonCegarLoop]: Abstraction has 172 states and 231 transitions. [2022-11-02 20:08:01,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:08:01,199 INFO L428 stractBuchiCegarLoop]: Abstraction has 172 states and 231 transitions. [2022-11-02 20:08:01,199 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-02 20:08:01,199 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 172 states and 231 transitions. [2022-11-02 20:08:01,202 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-11-02 20:08:01,202 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:08:01,202 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:08:01,205 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [8, 7, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-02 20:08:01,212 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-02 20:08:01,212 INFO L748 eck$LassoCheckResult]: Stem: 1215#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 1216#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 1243#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 1289#fibo1ENTRY ~n := #in~n; 1323#L10 assume !(~n < 1); 1322#L12 assume !(1 == ~n); 1221#L15 call #t~ret4 := fibo2(~n - 1);< 1275#fibo2ENTRY ~n := #in~n; 1282#L20 assume !(~n < 1); 1220#L22 assume !(1 == ~n); 1222#L25 call #t~ret6 := fibo1(~n - 1);< 1247#fibo1ENTRY ~n := #in~n; 1314#L10 assume !(~n < 1); 1313#L12 assume !(1 == ~n); 1245#L15 call #t~ret4 := fibo2(~n - 1);< 1312#fibo2ENTRY ~n := #in~n; 1309#L20 assume !(~n < 1); 1310#L22 assume !(1 == ~n); 1244#L25 call #t~ret6 := fibo1(~n - 1);< 1247#fibo1ENTRY ~n := #in~n; 1314#L10 assume !(~n < 1); 1313#L12 assume !(1 == ~n); 1245#L15 call #t~ret4 := fibo2(~n - 1);< 1312#fibo2ENTRY ~n := #in~n; 1309#L20 assume ~n < 1;#res := 0; 1269#fibo2FINAL assume true; 1270#fibo2EXIT >#50#return; 1246#L15-1 call #t~ret5 := fibo2(~n - 2);< 1249#fibo2ENTRY ~n := #in~n; 1379#L20 assume !(~n < 1); 1378#L22 assume !(1 == ~n); 1244#L25 call #t~ret6 := fibo1(~n - 1);< 1247#fibo1ENTRY ~n := #in~n; 1315#L10 assume !(~n < 1); 1318#L12 assume 1 == ~n;#res := 1; 1317#fibo1FINAL assume true; 1316#fibo1EXIT >#46#return; 1225#L25-1 call #t~ret7 := fibo1(~n - 2);< 1235#fibo1ENTRY ~n := #in~n; 1308#L10 assume !(~n < 1); 1306#L12 assume !(1 == ~n); 1233#L15 call #t~ret4 := fibo2(~n - 1);< 1305#fibo2ENTRY ~n := #in~n; 1303#L20 assume ~n < 1;#res := 0; 1304#fibo2FINAL assume true; 1307#fibo2EXIT >#50#return; 1234#L15-1 call #t~ret5 := fibo2(~n - 2);< 1305#fibo2ENTRY ~n := #in~n; 1303#L20 assume !(~n < 1); 1298#L22 assume 1 == ~n;#res := 1; 1299#fibo2FINAL assume true; 1366#fibo2EXIT >#52#return; 1365#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1380#fibo1FINAL assume true; 1376#fibo1EXIT >#48#return; 1372#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1369#fibo2FINAL assume true; 1367#fibo2EXIT >#52#return; 1365#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1380#fibo1FINAL assume true; 1376#fibo1EXIT >#46#return; 1260#L25-1 call #t~ret7 := fibo1(~n - 2);< 1231#fibo1ENTRY ~n := #in~n; 1271#L10 assume !(~n < 1); 1258#L12 assume !(1 == ~n); 1263#L15 call #t~ret4 := fibo2(~n - 1);< 1274#fibo2ENTRY ~n := #in~n; 1284#L20 assume ~n < 1;#res := 0; 1370#fibo2FINAL assume true; 1368#fibo2EXIT >#50#return; 1283#L15-1 call #t~ret5 := fibo2(~n - 2);< 1274#fibo2ENTRY ~n := #in~n; 1284#L20 assume ~n < 1;#res := 0; 1370#fibo2FINAL assume true; 1368#fibo2EXIT >#52#return; 1365#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1380#fibo1FINAL assume true; 1376#fibo1EXIT >#48#return; 1372#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1369#fibo2FINAL assume true; 1367#fibo2EXIT >#50#return; 1283#L15-1 [2022-11-02 20:08:01,213 INFO L750 eck$LassoCheckResult]: Loop: 1283#L15-1 call #t~ret5 := fibo2(~n - 2);< 1274#fibo2ENTRY ~n := #in~n; 1284#L20 assume !(~n < 1); 1373#L22 assume !(1 == ~n); 1259#L25 call #t~ret6 := fibo1(~n - 1);< 1231#fibo1ENTRY ~n := #in~n; 1271#L10 assume !(~n < 1); 1258#L12 assume !(1 == ~n); 1263#L15 call #t~ret4 := fibo2(~n - 1);< 1274#fibo2ENTRY ~n := #in~n; 1284#L20 assume !(~n < 1); 1373#L22 assume !(1 == ~n); 1259#L25 call #t~ret6 := fibo1(~n - 1);< 1231#fibo1ENTRY ~n := #in~n; 1271#L10 assume !(~n < 1); 1258#L12 assume !(1 == ~n); 1263#L15 call #t~ret4 := fibo2(~n - 1);< 1274#fibo2ENTRY ~n := #in~n; 1284#L20 assume ~n < 1;#res := 0; 1370#fibo2FINAL assume true; 1368#fibo2EXIT >#50#return; 1283#L15-1 call #t~ret5 := fibo2(~n - 2);< 1274#fibo2ENTRY ~n := #in~n; 1284#L20 assume ~n < 1;#res := 0; 1370#fibo2FINAL assume true; 1368#fibo2EXIT >#52#return; 1365#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1380#fibo1FINAL assume true; 1376#fibo1EXIT >#46#return; 1260#L25-1 call #t~ret7 := fibo1(~n - 2);< 1231#fibo1ENTRY ~n := #in~n; 1271#L10 assume !(~n < 1); 1258#L12 assume !(1 == ~n); 1263#L15 call #t~ret4 := fibo2(~n - 1);< 1274#fibo2ENTRY ~n := #in~n; 1284#L20 assume ~n < 1;#res := 0; 1370#fibo2FINAL assume true; 1368#fibo2EXIT >#50#return; 1283#L15-1 call #t~ret5 := fibo2(~n - 2);< 1274#fibo2ENTRY ~n := #in~n; 1284#L20 assume ~n < 1;#res := 0; 1370#fibo2FINAL assume true; 1368#fibo2EXIT >#52#return; 1365#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1380#fibo1FINAL assume true; 1376#fibo1EXIT >#48#return; 1372#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1369#fibo2FINAL assume true; 1367#fibo2EXIT >#50#return; 1283#L15-1 [2022-11-02 20:08:01,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:01,213 INFO L85 PathProgramCache]: Analyzing trace with hash 376035563, now seen corresponding path program 1 times [2022-11-02 20:08:01,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:01,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182845809] [2022-11-02 20:08:01,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:01,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:01,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:01,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:08:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:01,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:08:01,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:01,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:08:01,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:01,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:08:01,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:01,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:08:01,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:01,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:08:01,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:01,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:08:01,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:01,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:08:01,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:01,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-02 20:08:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:01,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:08:01,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:01,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:08:01,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:01,868 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 23 proven. 71 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-02 20:08:01,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:01,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182845809] [2022-11-02 20:08:01,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182845809] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:08:01,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084064795] [2022-11-02 20:08:01,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:01,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:08:01,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:01,875 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:08:01,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-02 20:08:01,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:01,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:08:01,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:02,089 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 30 proven. 79 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-02 20:08:02,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:08:02,689 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 30 proven. 80 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-02 20:08:02,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084064795] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:08:02,696 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:08:02,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 14] total 30 [2022-11-02 20:08:02,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582590335] [2022-11-02 20:08:02,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:08:02,700 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-02 20:08:02,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:02,703 INFO L85 PathProgramCache]: Analyzing trace with hash 36254641, now seen corresponding path program 1 times [2022-11-02 20:08:02,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:02,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808718904] [2022-11-02 20:08:02,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:02,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:02,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:02,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:08:02,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:02,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:08:02,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:02,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:08:02,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:02,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:08:02,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:02,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 20:08:02,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:02,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:08:02,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:02,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:08:02,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:02,857 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 15 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-02 20:08:02,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:02,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808718904] [2022-11-02 20:08:02,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808718904] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:08:02,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721187206] [2022-11-02 20:08:02,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:02,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:08:02,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:02,860 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:08:02,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-02 20:08:02,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:02,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:08:02,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:03,011 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-02 20:08:03,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:08:03,364 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-02 20:08:03,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721187206] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:08:03,365 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:08:03,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 15 [2022-11-02 20:08:03,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667543728] [2022-11-02 20:08:03,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:08:03,366 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-02 20:08:03,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:03,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-02 20:08:03,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:08:03,367 INFO L87 Difference]: Start difference. First operand 172 states and 231 transitions. cyclomatic complexity: 64 Second operand has 15 states, 13 states have (on average 2.923076923076923) internal successors, (38), 14 states have internal predecessors, (38), 8 states have call successors, (12), 1 states have call predecessors, (12), 5 states have return successors, (14), 5 states have call predecessors, (14), 8 states have call successors, (14) [2022-11-02 20:08:03,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:03,653 INFO L93 Difference]: Finished difference Result 228 states and 299 transitions. [2022-11-02 20:08:03,653 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 228 states and 299 transitions. [2022-11-02 20:08:03,658 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-11-02 20:08:03,663 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 228 states to 205 states and 268 transitions. [2022-11-02 20:08:03,663 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 139 [2022-11-02 20:08:03,664 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 139 [2022-11-02 20:08:03,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 205 states and 268 transitions. [2022-11-02 20:08:03,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 20:08:03,665 INFO L218 hiAutomatonCegarLoop]: Abstraction has 205 states and 268 transitions. [2022-11-02 20:08:03,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states and 268 transitions. [2022-11-02 20:08:03,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 189. [2022-11-02 20:08:03,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 118 states have (on average 1.1779661016949152) internal successors, (139), 128 states have internal predecessors, (139), 40 states have call successors, (41), 25 states have call predecessors, (41), 31 states have return successors, (64), 35 states have call predecessors, (64), 37 states have call successors, (64) [2022-11-02 20:08:03,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 244 transitions. [2022-11-02 20:08:03,684 INFO L240 hiAutomatonCegarLoop]: Abstraction has 189 states and 244 transitions. [2022-11-02 20:08:03,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:08:03,685 INFO L428 stractBuchiCegarLoop]: Abstraction has 189 states and 244 transitions. [2022-11-02 20:08:03,685 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-02 20:08:03,685 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 189 states and 244 transitions. [2022-11-02 20:08:03,687 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-11-02 20:08:03,688 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:08:03,688 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:08:03,690 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:03,690 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-02 20:08:03,690 INFO L748 eck$LassoCheckResult]: Stem: 2732#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 2733#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 2762#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 2794#fibo1ENTRY ~n := #in~n; 2783#L10 assume !(~n < 1); 2778#L12 assume !(1 == ~n); 2738#L15 call #t~ret4 := fibo2(~n - 1);< 2786#fibo2ENTRY ~n := #in~n; 2788#L20 assume !(~n < 1); 2737#L22 assume !(1 == ~n); 2739#L25 call #t~ret6 := fibo1(~n - 1);< 2807#fibo1ENTRY ~n := #in~n; 2805#L10 assume !(~n < 1); 2804#L12 assume !(1 == ~n); 2750#L15 call #t~ret4 := fibo2(~n - 1);< 2799#fibo2ENTRY ~n := #in~n; 2825#L20 assume !(~n < 1); 2824#L22 assume !(1 == ~n); 2769#L25 call #t~ret6 := fibo1(~n - 1);< 2807#fibo1ENTRY ~n := #in~n; 2808#L10 assume !(~n < 1); 2835#L12 assume 1 == ~n;#res := 1; 2836#fibo1FINAL assume true; 2905#fibo1EXIT >#46#return; 2748#L25-1 call #t~ret7 := fibo1(~n - 2);< 2751#fibo1ENTRY ~n := #in~n; 2911#L10 assume ~n < 1;#res := 0; 2909#fibo1FINAL assume true; 2907#fibo1EXIT >#48#return; 2771#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 2772#fibo2FINAL assume true; 2779#fibo2EXIT >#50#return; 2849#L15-1 [2022-11-02 20:08:03,691 INFO L750 eck$LassoCheckResult]: Loop: 2849#L15-1 call #t~ret5 := fibo2(~n - 2);< 2858#fibo2ENTRY ~n := #in~n; 2886#L20 assume !(~n < 1); 2884#L22 assume !(1 == ~n); 2857#L25 call #t~ret6 := fibo1(~n - 1);< 2867#fibo1ENTRY ~n := #in~n; 2864#L10 assume !(~n < 1); 2862#L12 assume !(1 == ~n); 2851#L15 call #t~ret4 := fibo2(~n - 1);< 2858#fibo2ENTRY ~n := #in~n; 2886#L20 assume !(~n < 1); 2884#L22 assume !(1 == ~n); 2857#L25 call #t~ret6 := fibo1(~n - 1);< 2867#fibo1ENTRY ~n := #in~n; 2864#L10 assume !(~n < 1); 2862#L12 assume !(1 == ~n); 2851#L15 call #t~ret4 := fibo2(~n - 1);< 2858#fibo2ENTRY ~n := #in~n; 2886#L20 assume !(~n < 1); 2884#L22 assume 1 == ~n;#res := 1; 2885#fibo2FINAL assume true; 2860#fibo2EXIT >#50#return; 2849#L15-1 call #t~ret5 := fibo2(~n - 2);< 2858#fibo2ENTRY ~n := #in~n; 2886#L20 assume ~n < 1;#res := 0; 2887#fibo2FINAL assume true; 2883#fibo2EXIT >#52#return; 2848#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2882#fibo1FINAL assume true; 2879#fibo1EXIT >#46#return; 2854#L25-1 call #t~ret7 := fibo1(~n - 2);< 2867#fibo1ENTRY ~n := #in~n; 2864#L10 assume !(~n < 1); 2862#L12 assume !(1 == ~n); 2851#L15 call #t~ret4 := fibo2(~n - 1);< 2858#fibo2ENTRY ~n := #in~n; 2886#L20 assume !(~n < 1); 2884#L22 assume 1 == ~n;#res := 1; 2885#fibo2FINAL assume true; 2860#fibo2EXIT >#50#return; 2849#L15-1 call #t~ret5 := fibo2(~n - 2);< 2858#fibo2ENTRY ~n := #in~n; 2886#L20 assume ~n < 1;#res := 0; 2887#fibo2FINAL assume true; 2883#fibo2EXIT >#52#return; 2848#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2882#fibo1FINAL assume true; 2879#fibo1EXIT >#48#return; 2876#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 2875#fibo2FINAL assume true; 2850#fibo2EXIT >#50#return; 2849#L15-1 [2022-11-02 20:08:03,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:03,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1036448488, now seen corresponding path program 1 times [2022-11-02 20:08:03,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:03,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598904232] [2022-11-02 20:08:03,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:03,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:03,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:08:03,699 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:08:03,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:08:03,708 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:08:03,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:03,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1445694181, now seen corresponding path program 1 times [2022-11-02 20:08:03,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:03,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167166811] [2022-11-02 20:08:03,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:03,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:03,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:03,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:08:03,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:03,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:08:03,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:03,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:08:03,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:03,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:08:03,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:03,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:08:03,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:03,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:08:03,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:03,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:08:03,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:03,926 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 22 proven. 14 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-02 20:08:03,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:03,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167166811] [2022-11-02 20:08:03,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167166811] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:08:03,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458643886] [2022-11-02 20:08:03,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:03,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:08:03,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:03,930 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:08:03,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-02 20:08:03,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:03,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:08:03,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:04,113 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 27 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-02 20:08:04,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:08:04,597 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 27 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-02 20:08:04,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458643886] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:08:04,597 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:08:04,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2022-11-02 20:08:04,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251423834] [2022-11-02 20:08:04,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:08:04,598 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-02 20:08:04,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:04,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 20:08:04,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:08:04,599 INFO L87 Difference]: Start difference. First operand 189 states and 244 transitions. cyclomatic complexity: 60 Second operand has 20 states, 17 states have (on average 2.823529411764706) internal successors, (48), 18 states have internal predecessors, (48), 11 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) [2022-11-02 20:08:04,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:04,957 INFO L93 Difference]: Finished difference Result 130 states and 162 transitions. [2022-11-02 20:08:04,957 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 130 states and 162 transitions. [2022-11-02 20:08:04,962 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2022-11-02 20:08:04,966 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 130 states to 106 states and 132 transitions. [2022-11-02 20:08:04,966 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 91 [2022-11-02 20:08:04,969 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 91 [2022-11-02 20:08:04,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 106 states and 132 transitions. [2022-11-02 20:08:04,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 20:08:04,969 INFO L218 hiAutomatonCegarLoop]: Abstraction has 106 states and 132 transitions. [2022-11-02 20:08:04,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states and 132 transitions. [2022-11-02 20:08:04,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2022-11-02 20:08:04,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 67 states have (on average 1.1194029850746268) internal successors, (75), 69 states have internal predecessors, (75), 20 states have call successors, (20), 15 states have call predecessors, (20), 16 states have return successors, (33), 18 states have call predecessors, (33), 17 states have call successors, (33) [2022-11-02 20:08:04,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 128 transitions. [2022-11-02 20:08:04,996 INFO L240 hiAutomatonCegarLoop]: Abstraction has 103 states and 128 transitions. [2022-11-02 20:08:04,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:08:04,997 INFO L428 stractBuchiCegarLoop]: Abstraction has 103 states and 128 transitions. [2022-11-02 20:08:04,997 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-11-02 20:08:04,997 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 103 states and 128 transitions. [2022-11-02 20:08:04,998 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2022-11-02 20:08:04,999 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:08:04,999 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:08:05,000 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:05,000 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:05,001 INFO L748 eck$LassoCheckResult]: Stem: 3486#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 3487#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 3509#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 3536#fibo1ENTRY ~n := #in~n; 3524#L10 assume !(~n < 1); 3525#L12 assume !(1 == ~n); 3510#L15 call #t~ret4 := fibo2(~n - 1);< 3570#fibo2ENTRY ~n := #in~n; 3531#L20 assume !(~n < 1); 3532#L22 assume !(1 == ~n); 3495#L25 call #t~ret6 := fibo1(~n - 1);< 3505#fibo1ENTRY ~n := #in~n; 3506#L10 assume !(~n < 1); 3519#L12 assume !(1 == ~n); 3492#L15 call #t~ret4 := fibo2(~n - 1);< 3527#fibo2ENTRY ~n := #in~n; 3535#L20 assume !(~n < 1); 3491#L22 assume !(1 == ~n); 3493#L25 call #t~ret6 := fibo1(~n - 1);< 3505#fibo1ENTRY ~n := #in~n; 3507#L10 assume !(~n < 1); 3539#L12 assume 1 == ~n;#res := 1; 3494#fibo1FINAL assume true; 3496#fibo1EXIT >#46#return; 3508#L25-1 call #t~ret7 := fibo1(~n - 2);< 3579#fibo1ENTRY ~n := #in~n; 3584#L10 assume ~n < 1;#res := 0; 3581#fibo1FINAL assume true; 3577#fibo1EXIT >#48#return; 3574#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 3573#fibo2FINAL assume true; 3571#fibo2EXIT >#50#return; 3514#L15-1 [2022-11-02 20:08:05,001 INFO L750 eck$LassoCheckResult]: Loop: 3514#L15-1 call #t~ret5 := fibo2(~n - 2);< 3545#fibo2ENTRY ~n := #in~n; 3568#L20 assume !(~n < 1); 3540#L22 assume !(1 == ~n); 3501#L25 call #t~ret6 := fibo1(~n - 1);< 3499#fibo1ENTRY ~n := #in~n; 3504#L10 assume !(~n < 1); 3542#L12 assume !(1 == ~n); 3513#L15 call #t~ret4 := fibo2(~n - 1);< 3526#fibo2ENTRY ~n := #in~n; 3534#L20 assume !(~n < 1); 3540#L22 assume !(1 == ~n); 3501#L25 call #t~ret6 := fibo1(~n - 1);< 3499#fibo1ENTRY ~n := #in~n; 3504#L10 assume !(~n < 1); 3542#L12 assume 1 == ~n;#res := 1; 3518#fibo1FINAL assume true; 3586#fibo1EXIT >#46#return; 3522#L25-1 call #t~ret7 := fibo1(~n - 2);< 3548#fibo1ENTRY ~n := #in~n; 3521#L10 assume ~n < 1;#res := 0; 3523#fibo1FINAL assume true; 3580#fibo1EXIT >#48#return; 3512#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 3515#fibo2FINAL assume true; 3520#fibo2EXIT >#50#return; 3514#L15-1 [2022-11-02 20:08:05,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:05,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1036448488, now seen corresponding path program 2 times [2022-11-02 20:08:05,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:05,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950167296] [2022-11-02 20:08:05,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:05,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:05,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:08:05,010 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:08:05,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:08:05,018 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:08:05,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:05,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1626884941, now seen corresponding path program 1 times [2022-11-02 20:08:05,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:05,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294233724] [2022-11-02 20:08:05,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:05,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:05,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:08:05,025 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:08:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:08:05,030 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:08:05,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:05,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1388651660, now seen corresponding path program 1 times [2022-11-02 20:08:05,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:05,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685094049] [2022-11-02 20:08:05,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:05,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:05,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:05,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:08:05,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:05,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:08:05,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:05,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:08:05,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:05,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-02 20:08:05,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:05,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:08:05,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:05,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:08:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:05,219 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 25 proven. 37 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-02 20:08:05,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:05,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685094049] [2022-11-02 20:08:05,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685094049] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:08:05,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99532499] [2022-11-02 20:08:05,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:05,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:08:05,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:05,224 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:08:05,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-02 20:08:05,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:05,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:08:05,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:05,359 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 72 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 20:08:05,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:08:05,503 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 25 proven. 37 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-02 20:08:05,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99532499] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:08:05,505 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:08:05,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 14 [2022-11-02 20:08:05,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164448407] [2022-11-02 20:08:05,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:08:05,928 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 20:08:05,928 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 20:08:05,928 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 20:08:05,928 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 20:08:05,928 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-02 20:08:05,928 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:08:05,928 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 20:08:05,929 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 20:08:05,929 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration6_Loop [2022-11-02 20:08:05,929 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 20:08:05,929 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 20:08:05,930 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:08:05,933 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:08:05,945 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:08:05,948 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:08:05,951 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:08:05,953 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:08:05,956 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:08:05,958 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:08:06,042 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 20:08:06,042 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-02 20:08:06,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:08:06,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:06,050 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:08:06,052 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:08:06,052 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:08:06,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-11-02 20:08:06,086 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:08:06,087 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:08:06,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:06,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:08:06,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:06,124 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:08:06,127 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:08:06,127 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:08:06,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-11-02 20:08:06,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:06,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:08:06,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:06,190 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:08:06,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-11-02 20:08:06,193 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-02 20:08:06,193 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:08:07,610 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-02 20:08:07,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:07,615 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 20:08:07,615 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 20:08:07,615 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 20:08:07,616 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 20:08:07,616 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-02 20:08:07,616 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:08:07,616 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 20:08:07,616 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 20:08:07,616 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration6_Loop [2022-11-02 20:08:07,616 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 20:08:07,616 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 20:08:07,617 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:08:07,627 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:08:07,638 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:08:07,641 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:08:07,643 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:08:07,646 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:08:07,649 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:08:07,651 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:08:07,728 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 20:08:07,728 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-02 20:08:07,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:08:07,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:07,733 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:08:07,735 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:08:07,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-11-02 20:08:07,767 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:08:07,767 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:08:07,768 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:08:07,768 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:08:07,768 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:08:07,768 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:08:07,768 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:08:07,789 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:08:07,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2022-11-02 20:08:07,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:08:07,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:07,815 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:08:07,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-11-02 20:08:07,817 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:08:07,827 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:08:07,827 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:08:07,827 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:08:07,827 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:08:07,827 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:08:07,829 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:08:07,829 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:08:07,832 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-02 20:08:07,837 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-02 20:08:07,837 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-02 20:08:07,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:08:07,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:07,839 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:08:07,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2022-11-02 20:08:07,841 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-02 20:08:07,841 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-02 20:08:07,841 INFO L513 LassoAnalysis]: Proved termination. [2022-11-02 20:08:07,841 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2022-11-02 20:08:07,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:07,866 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-02 20:08:07,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:07,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:08:07,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:08,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:08,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-02 20:08:08,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:08,420 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:08:08,421 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2022-11-02 20:08:08,421 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 103 states and 128 transitions. cyclomatic complexity: 27 Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-02 20:08:08,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2022-11-02 20:08:08,958 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 103 states and 128 transitions. cyclomatic complexity: 27. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 335 states and 442 transitions. Complement of second has 46 states. [2022-11-02 20:08:08,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 13 states 2 stem states 10 non-accepting loop states 1 accepting loop states [2022-11-02 20:08:08,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-02 20:08:08,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 70 transitions. [2022-11-02 20:08:08,964 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 70 transitions. Stem has 32 letters. Loop has 26 letters. [2022-11-02 20:08:08,970 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:08:08,970 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 70 transitions. Stem has 58 letters. Loop has 26 letters. [2022-11-02 20:08:08,974 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:08:08,974 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 70 transitions. Stem has 32 letters. Loop has 52 letters. [2022-11-02 20:08:08,979 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:08:08,979 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 335 states and 442 transitions. [2022-11-02 20:08:08,987 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 29 [2022-11-02 20:08:08,995 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 335 states to 292 states and 395 transitions. [2022-11-02 20:08:08,996 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 191 [2022-11-02 20:08:08,998 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 195 [2022-11-02 20:08:08,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 292 states and 395 transitions. [2022-11-02 20:08:08,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 20:08:08,999 INFO L218 hiAutomatonCegarLoop]: Abstraction has 292 states and 395 transitions. [2022-11-02 20:08:08,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states and 395 transitions. [2022-11-02 20:08:09,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 266. [2022-11-02 20:08:09,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 166 states have (on average 1.1506024096385543) internal successors, (191), 173 states have internal predecessors, (191), 55 states have call successors, (56), 36 states have call predecessors, (56), 45 states have return successors, (110), 56 states have call predecessors, (110), 52 states have call successors, (110) [2022-11-02 20:08:09,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 357 transitions. [2022-11-02 20:08:09,040 INFO L240 hiAutomatonCegarLoop]: Abstraction has 266 states and 357 transitions. [2022-11-02 20:08:09,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:09,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:08:09,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:08:09,042 INFO L87 Difference]: Start difference. First operand 266 states and 357 transitions. Second operand has 14 states, 13 states have (on average 3.0) internal successors, (39), 9 states have internal predecessors, (39), 7 states have call successors, (12), 7 states have call predecessors, (12), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-02 20:08:09,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:09,261 INFO L93 Difference]: Finished difference Result 125 states and 148 transitions. [2022-11-02 20:08:09,261 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 125 states and 148 transitions. [2022-11-02 20:08:09,263 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2022-11-02 20:08:09,265 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 125 states to 122 states and 145 transitions. [2022-11-02 20:08:09,265 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 107 [2022-11-02 20:08:09,265 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 107 [2022-11-02 20:08:09,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 122 states and 145 transitions. [2022-11-02 20:08:09,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 20:08:09,266 INFO L218 hiAutomatonCegarLoop]: Abstraction has 122 states and 145 transitions. [2022-11-02 20:08:09,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states and 145 transitions. [2022-11-02 20:08:09,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 118. [2022-11-02 20:08:09,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 77 states have (on average 1.1168831168831168) internal successors, (86), 80 states have internal predecessors, (86), 21 states have call successors, (21), 16 states have call predecessors, (21), 20 states have return successors, (34), 21 states have call predecessors, (34), 18 states have call successors, (34) [2022-11-02 20:08:09,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 141 transitions. [2022-11-02 20:08:09,271 INFO L240 hiAutomatonCegarLoop]: Abstraction has 118 states and 141 transitions. [2022-11-02 20:08:09,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:08:09,273 INFO L428 stractBuchiCegarLoop]: Abstraction has 118 states and 141 transitions. [2022-11-02 20:08:09,273 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-11-02 20:08:09,273 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 118 states and 141 transitions. [2022-11-02 20:08:09,274 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2022-11-02 20:08:09,274 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:08:09,275 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:08:09,277 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:09,277 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:09,278 INFO L748 eck$LassoCheckResult]: Stem: 5001#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 5002#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 5029#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 5053#fibo1ENTRY ~n := #in~n; 5054#L10 assume !(~n < 1); 5066#L12 assume !(1 == ~n); 5007#L15 call #t~ret4 := fibo2(~n - 1);< 5050#fibo2ENTRY ~n := #in~n; 5045#L20 assume !(~n < 1); 5006#L22 assume !(1 == ~n); 5008#L25 call #t~ret6 := fibo1(~n - 1);< 5023#fibo1ENTRY ~n := #in~n; 5025#L10 assume !(~n < 1); 5036#L12 assume !(1 == ~n); 5018#L15 call #t~ret4 := fibo2(~n - 1);< 5043#fibo2ENTRY ~n := #in~n; 5099#L20 assume !(~n < 1); 5097#L22 assume !(1 == ~n); 5024#L25 call #t~ret6 := fibo1(~n - 1);< 5023#fibo1ENTRY ~n := #in~n; 5025#L10 assume !(~n < 1); 5036#L12 assume !(1 == ~n); 5018#L15 call #t~ret4 := fibo2(~n - 1);< 5043#fibo2ENTRY ~n := #in~n; 5099#L20 assume !(~n < 1); 5097#L22 assume !(1 == ~n); 5024#L25 call #t~ret6 := fibo1(~n - 1);< 5023#fibo1ENTRY ~n := #in~n; 5026#L10 assume !(~n < 1); 5058#L12 assume 1 == ~n;#res := 1; 5064#fibo1FINAL assume true; 5113#fibo1EXIT >#46#return; 5017#L25-1 call #t~ret7 := fibo1(~n - 2);< 5019#fibo1ENTRY ~n := #in~n; 5115#L10 assume ~n < 1;#res := 0; 5114#fibo1FINAL assume true; 5027#fibo1EXIT >#48#return; 5028#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5033#fibo2FINAL assume true; 5046#fibo2EXIT >#50#return; 5004#L15-1 call #t~ret5 := fibo2(~n - 2);< 5032#fibo2ENTRY ~n := #in~n; 5044#L20 assume ~n < 1;#res := 0; 5005#fibo2FINAL assume true; 5037#fibo2EXIT >#52#return; 5076#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5074#fibo1FINAL assume true; 5071#fibo1EXIT >#46#return; 5010#L25-1 [2022-11-02 20:08:09,278 INFO L750 eck$LassoCheckResult]: Loop: 5010#L25-1 call #t~ret7 := fibo1(~n - 2);< 5031#fibo1ENTRY ~n := #in~n; 5061#L10 assume !(~n < 1); 5055#L12 assume !(1 == ~n); 5056#L15 call #t~ret4 := fibo2(~n - 1);< 5062#fibo2ENTRY ~n := #in~n; 5059#L20 assume !(~n < 1); 5060#L22 assume !(1 == ~n); 5012#L25 call #t~ret6 := fibo1(~n - 1);< 5031#fibo1ENTRY ~n := #in~n; 5061#L10 assume !(~n < 1); 5055#L12 assume !(1 == ~n); 5056#L15 call #t~ret4 := fibo2(~n - 1);< 5062#fibo2ENTRY ~n := #in~n; 5059#L20 assume !(~n < 1); 5060#L22 assume !(1 == ~n); 5012#L25 call #t~ret6 := fibo1(~n - 1);< 5031#fibo1ENTRY ~n := #in~n; 5061#L10 assume !(~n < 1); 5055#L12 assume 1 == ~n;#res := 1; 5009#fibo1FINAL assume true; 5016#fibo1EXIT >#46#return; 5039#L25-1 call #t~ret7 := fibo1(~n - 2);< 5116#fibo1ENTRY ~n := #in~n; 5038#L10 assume ~n < 1;#res := 0; 5040#fibo1FINAL assume true; 5095#fibo1EXIT >#48#return; 5094#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5092#fibo2FINAL assume true; 5089#fibo2EXIT >#50#return; 5082#L15-1 call #t~ret5 := fibo2(~n - 2);< 5087#fibo2ENTRY ~n := #in~n; 5107#L20 assume ~n < 1;#res := 0; 5091#fibo2FINAL assume true; 5080#fibo2EXIT >#52#return; 5083#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5079#fibo1FINAL assume true; 5072#fibo1EXIT >#46#return; 5010#L25-1 [2022-11-02 20:08:09,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:09,278 INFO L85 PathProgramCache]: Analyzing trace with hash -959890655, now seen corresponding path program 1 times [2022-11-02 20:08:09,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:09,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797807818] [2022-11-02 20:08:09,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:09,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:09,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:09,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 20:08:09,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:09,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:08:09,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:09,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:08:09,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:09,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:08:09,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:09,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:08:09,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:09,509 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 20:08:09,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:09,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797807818] [2022-11-02 20:08:09,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797807818] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:08:09,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672846190] [2022-11-02 20:08:09,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:09,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:08:09,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:09,512 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:08:09,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-11-02 20:08:09,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:09,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:08:09,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:09,693 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:08:09,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:08:10,014 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:08:10,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672846190] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:08:10,015 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:08:10,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 19 [2022-11-02 20:08:10,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238969530] [2022-11-02 20:08:10,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:08:10,016 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-02 20:08:10,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:10,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1353018526, now seen corresponding path program 1 times [2022-11-02 20:08:10,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:10,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448560252] [2022-11-02 20:08:10,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:10,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:10,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:10,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:08:10,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:10,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:08:10,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:10,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:08:10,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:10,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:08:10,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:10,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:08:10,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:10,176 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-02 20:08:10,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:10,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448560252] [2022-11-02 20:08:10,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448560252] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:08:10,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067978217] [2022-11-02 20:08:10,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:10,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:08:10,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:10,178 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:08:10,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-11-02 20:08:10,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:10,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:08:10,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:10,284 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-02 20:08:10,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:08:10,598 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-02 20:08:10,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067978217] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:08:10,599 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:08:10,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 15 [2022-11-02 20:08:10,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209080015] [2022-11-02 20:08:10,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:08:10,600 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-02 20:08:10,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:10,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-02 20:08:10,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:08:10,601 INFO L87 Difference]: Start difference. First operand 118 states and 141 transitions. cyclomatic complexity: 25 Second operand has 15 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 6 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-02 20:08:10,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:10,798 INFO L93 Difference]: Finished difference Result 126 states and 147 transitions. [2022-11-02 20:08:10,799 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 126 states and 147 transitions. [2022-11-02 20:08:10,800 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2022-11-02 20:08:10,802 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 126 states to 122 states and 143 transitions. [2022-11-02 20:08:10,802 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 107 [2022-11-02 20:08:10,802 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 107 [2022-11-02 20:08:10,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 122 states and 143 transitions. [2022-11-02 20:08:10,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 20:08:10,803 INFO L218 hiAutomatonCegarLoop]: Abstraction has 122 states and 143 transitions. [2022-11-02 20:08:10,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states and 143 transitions. [2022-11-02 20:08:10,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2022-11-02 20:08:10,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 79 states have (on average 1.1012658227848102) internal successors, (87), 81 states have internal predecessors, (87), 21 states have call successors, (21), 17 states have call predecessors, (21), 20 states have return successors, (33), 21 states have call predecessors, (33), 18 states have call successors, (33) [2022-11-02 20:08:10,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 141 transitions. [2022-11-02 20:08:10,808 INFO L240 hiAutomatonCegarLoop]: Abstraction has 120 states and 141 transitions. [2022-11-02 20:08:10,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:08:10,810 INFO L428 stractBuchiCegarLoop]: Abstraction has 120 states and 141 transitions. [2022-11-02 20:08:10,810 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2022-11-02 20:08:10,810 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 120 states and 141 transitions. [2022-11-02 20:08:10,811 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2022-11-02 20:08:10,811 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:08:10,812 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:08:10,815 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:10,816 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-02 20:08:10,816 INFO L748 eck$LassoCheckResult]: Stem: 5911#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 5912#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 5933#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 5956#fibo1ENTRY ~n := #in~n; 5948#L10 assume !(~n < 1); 5942#L12 assume !(1 == ~n); 5917#L15 call #t~ret4 := fibo2(~n - 1);< 5955#fibo2ENTRY ~n := #in~n; 5953#L20 assume !(~n < 1); 5916#L22 assume !(1 == ~n); 5918#L25 call #t~ret6 := fibo1(~n - 1);< 5927#fibo1ENTRY ~n := #in~n; 5929#L10 assume !(~n < 1); 5973#L12 assume !(1 == ~n); 5936#L15 call #t~ret4 := fibo2(~n - 1);< 5951#fibo2ENTRY ~n := #in~n; 5989#L20 assume !(~n < 1); 5985#L22 assume !(1 == ~n); 5928#L25 call #t~ret6 := fibo1(~n - 1);< 5927#fibo1ENTRY ~n := #in~n; 5929#L10 assume !(~n < 1); 5973#L12 assume !(1 == ~n); 5936#L15 call #t~ret4 := fibo2(~n - 1);< 5951#fibo2ENTRY ~n := #in~n; 5989#L20 assume !(~n < 1); 5985#L22 assume !(1 == ~n); 5928#L25 call #t~ret6 := fibo1(~n - 1);< 5927#fibo1ENTRY ~n := #in~n; 5930#L10 assume !(~n < 1); 5965#L12 assume 1 == ~n;#res := 1; 5969#fibo1FINAL assume true; 5931#fibo1EXIT >#46#return; 5932#L25-1 call #t~ret7 := fibo1(~n - 2);< 6019#fibo1ENTRY ~n := #in~n; 6024#L10 assume ~n < 1;#res := 0; 6022#fibo1FINAL assume true; 6018#fibo1EXIT >#48#return; 6016#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6015#fibo2FINAL assume true; 6014#fibo2EXIT >#50#return; 5914#L15-1 call #t~ret5 := fibo2(~n - 2);< 5940#fibo2ENTRY ~n := #in~n; 5952#L20 assume !(~n < 1); 5913#L22 assume 1 == ~n;#res := 1; 5915#fibo2FINAL assume true; 6025#fibo2EXIT >#52#return; 5957#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5958#fibo1FINAL assume true; 5977#fibo1EXIT >#46#return; 5961#L25-1 [2022-11-02 20:08:10,818 INFO L750 eck$LassoCheckResult]: Loop: 5961#L25-1 call #t~ret7 := fibo1(~n - 2);< 5921#fibo1ENTRY ~n := #in~n; 6028#L10 assume !(~n < 1); 5959#L12 assume !(1 == ~n); 5938#L15 call #t~ret4 := fibo2(~n - 1);< 5967#fibo2ENTRY ~n := #in~n; 5966#L20 assume !(~n < 1); 5964#L22 assume !(1 == ~n); 5962#L25 call #t~ret6 := fibo1(~n - 1);< 5935#fibo1ENTRY ~n := #in~n; 5971#L10 assume !(~n < 1); 5959#L12 assume !(1 == ~n); 5938#L15 call #t~ret4 := fibo2(~n - 1);< 5967#fibo2ENTRY ~n := #in~n; 5966#L20 assume !(~n < 1); 5964#L22 assume !(1 == ~n); 5962#L25 call #t~ret6 := fibo1(~n - 1);< 5935#fibo1ENTRY ~n := #in~n; 5971#L10 assume !(~n < 1); 5959#L12 assume !(1 == ~n); 5938#L15 call #t~ret4 := fibo2(~n - 1);< 5967#fibo2ENTRY ~n := #in~n; 5966#L20 assume !(~n < 1); 5964#L22 assume 1 == ~n;#res := 1; 5943#fibo2FINAL assume true; 5944#fibo2EXIT >#50#return; 5954#L15-1 call #t~ret5 := fibo2(~n - 2);< 5992#fibo2ENTRY ~n := #in~n; 5997#L20 assume ~n < 1;#res := 0; 5995#fibo2FINAL assume true; 5991#fibo2EXIT >#52#return; 5990#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5979#fibo1FINAL assume true; 5975#fibo1EXIT >#46#return; 5976#L25-1 call #t~ret7 := fibo1(~n - 2);< 6027#fibo1ENTRY ~n := #in~n; 6029#L10 assume ~n < 1;#res := 0; 5947#fibo1FINAL assume true; 6003#fibo1EXIT >#48#return; 6001#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6000#fibo2FINAL assume true; 5986#fibo2EXIT >#50#return; 5983#L15-1 call #t~ret5 := fibo2(~n - 2);< 5984#fibo2ENTRY ~n := #in~n; 5996#L20 assume !(~n < 1); 5994#L22 assume 1 == ~n;#res := 1; 5993#fibo2FINAL assume true; 5982#fibo2EXIT >#52#return; 5981#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5980#fibo1FINAL assume true; 5978#fibo1EXIT >#46#return; 5961#L25-1 [2022-11-02 20:08:10,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:10,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1031604372, now seen corresponding path program 1 times [2022-11-02 20:08:10,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:10,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134108363] [2022-11-02 20:08:10,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:10,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:10,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 20:08:10,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:11,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:08:11,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:11,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:08:11,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:11,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:08:11,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:11,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:08:11,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:11,048 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 35 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 20:08:11,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:11,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134108363] [2022-11-02 20:08:11,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134108363] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:08:11,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54415244] [2022-11-02 20:08:11,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:11,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:08:11,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:11,055 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:08:11,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-11-02 20:08:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:11,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:08:11,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:11,219 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:08:11,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:08:11,487 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:08:11,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54415244] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:08:11,487 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:08:11,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 19 [2022-11-02 20:08:11,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132822262] [2022-11-02 20:08:11,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:08:11,488 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-02 20:08:11,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:11,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1888573374, now seen corresponding path program 1 times [2022-11-02 20:08:11,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:11,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396611460] [2022-11-02 20:08:11,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:11,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:11,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:11,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:08:11,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:11,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:08:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:11,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:08:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:11,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:08:11,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:11,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:08:11,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:11,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:08:11,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:11,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:08:11,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:11,630 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-02 20:08:11,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:11,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396611460] [2022-11-02 20:08:11,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396611460] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:08:11,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577452450] [2022-11-02 20:08:11,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:11,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:08:11,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:11,660 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:08:11,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-11-02 20:08:11,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:11,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:08:11,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:11,785 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 38 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-02 20:08:11,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:08:12,185 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 23 proven. 12 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 20:08:12,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577452450] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:08:12,185 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:08:12,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 15 [2022-11-02 20:08:12,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123723734] [2022-11-02 20:08:12,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:08:12,186 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-02 20:08:12,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:12,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 20:08:12,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:08:12,188 INFO L87 Difference]: Start difference. First operand 120 states and 141 transitions. cyclomatic complexity: 23 Second operand has 20 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 15 states have internal predecessors, (43), 11 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (10), 5 states have call predecessors, (10), 7 states have call successors, (10) [2022-11-02 20:08:12,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:12,620 INFO L93 Difference]: Finished difference Result 103 states and 109 transitions. [2022-11-02 20:08:12,620 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 103 states and 109 transitions. [2022-11-02 20:08:12,622 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-11-02 20:08:12,623 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 103 states to 89 states and 95 transitions. [2022-11-02 20:08:12,623 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2022-11-02 20:08:12,623 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 74 [2022-11-02 20:08:12,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 89 states and 95 transitions. [2022-11-02 20:08:12,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 20:08:12,627 INFO L218 hiAutomatonCegarLoop]: Abstraction has 89 states and 95 transitions. [2022-11-02 20:08:12,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states and 95 transitions. [2022-11-02 20:08:12,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-11-02 20:08:12,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 61 states have internal predecessors, (64), 16 states have call successors, (16), 13 states have call predecessors, (16), 14 states have return successors, (15), 14 states have call predecessors, (15), 13 states have call successors, (15) [2022-11-02 20:08:12,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 95 transitions. [2022-11-02 20:08:12,635 INFO L240 hiAutomatonCegarLoop]: Abstraction has 89 states and 95 transitions. [2022-11-02 20:08:12,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:08:12,635 INFO L428 stractBuchiCegarLoop]: Abstraction has 89 states and 95 transitions. [2022-11-02 20:08:12,636 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2022-11-02 20:08:12,636 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 89 states and 95 transitions. [2022-11-02 20:08:12,637 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-11-02 20:08:12,637 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:08:12,637 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:08:12,638 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:12,639 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:12,639 INFO L748 eck$LassoCheckResult]: Stem: 6951#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 6952#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 6972#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 6996#fibo1ENTRY ~n := #in~n; 6985#L10 assume !(~n < 1); 6982#L12 assume !(1 == ~n); 6957#L15 call #t~ret4 := fibo2(~n - 1);< 6988#fibo2ENTRY ~n := #in~n; 6992#L20 assume !(~n < 1); 6956#L22 assume !(1 == ~n); 6958#L25 call #t~ret6 := fibo1(~n - 1);< 6967#fibo1ENTRY ~n := #in~n; 6969#L10 assume !(~n < 1); 7017#L12 assume !(1 == ~n); 6975#L15 call #t~ret4 := fibo2(~n - 1);< 7015#fibo2ENTRY ~n := #in~n; 7011#L20 assume !(~n < 1); 7009#L22 assume !(1 == ~n); 6968#L25 call #t~ret6 := fibo1(~n - 1);< 6967#fibo1ENTRY ~n := #in~n; 6970#L10 assume !(~n < 1); 6980#L12 assume 1 == ~n;#res := 1; 6981#fibo1FINAL assume true; 7025#fibo1EXIT >#46#return; 7022#L25-1 call #t~ret7 := fibo1(~n - 2);< 7023#fibo1ENTRY ~n := #in~n; 7028#L10 assume ~n < 1;#res := 0; 7027#fibo1FINAL assume true; 7021#fibo1EXIT >#48#return; 7019#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 7018#fibo2FINAL assume true; 7016#fibo2EXIT >#50#return; 7013#L15-1 call #t~ret5 := fibo2(~n - 2);< 7014#fibo2ENTRY ~n := #in~n; 7026#L20 assume !(~n < 1); 7024#L22 assume 1 == ~n;#res := 1; 7020#fibo2FINAL assume true; 7012#fibo2EXIT >#52#return; 7010#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 7008#fibo1FINAL assume true; 7006#fibo1EXIT >#46#return; 6960#L25-1 call #t~ret7 := fibo1(~n - 2);< 7002#fibo1ENTRY ~n := #in~n; 7039#L10 assume !(~n < 1); 6997#L12 [2022-11-02 20:08:12,641 INFO L750 eck$LassoCheckResult]: Loop: 6997#L12 assume !(1 == ~n); 6964#L15 call #t~ret4 := fibo2(~n - 1);< 6987#fibo2ENTRY ~n := #in~n; 7004#L20 assume !(~n < 1); 7000#L22 assume !(1 == ~n); 6973#L25 call #t~ret6 := fibo1(~n - 1);< 6974#fibo1ENTRY ~n := #in~n; 6999#L10 assume !(~n < 1); 6997#L12 [2022-11-02 20:08:12,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:12,642 INFO L85 PathProgramCache]: Analyzing trace with hash -279928922, now seen corresponding path program 2 times [2022-11-02 20:08:12,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:12,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613858568] [2022-11-02 20:08:12,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:12,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:08:12,650 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:08:12,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:08:12,666 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:08:12,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:12,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1039714728, now seen corresponding path program 2 times [2022-11-02 20:08:12,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:12,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639640768] [2022-11-02 20:08:12,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:12,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:12,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:08:12,671 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:08:12,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:08:12,676 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:08:12,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:12,677 INFO L85 PathProgramCache]: Analyzing trace with hash -296356787, now seen corresponding path program 3 times [2022-11-02 20:08:12,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:12,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182444515] [2022-11-02 20:08:12,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:12,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:12,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:12,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 20:08:12,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:12,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:08:12,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:12,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:08:12,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:12,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:08:12,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:12,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:08:12,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:12,840 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 35 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-02 20:08:12,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:12,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182444515] [2022-11-02 20:08:12,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182444515] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:08:12,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613863864] [2022-11-02 20:08:12,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:08:12,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:08:12,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:12,848 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:08:12,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-11-02 20:08:12,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-02 20:08:12,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:08:12,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:08:12,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:13,008 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 35 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-02 20:08:13,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:08:13,160 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 35 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-02 20:08:13,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613863864] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:08:13,160 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:08:13,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 14 [2022-11-02 20:08:13,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769166315] [2022-11-02 20:08:13,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:08:13,297 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 20:08:13,297 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 20:08:13,297 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 20:08:13,297 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 20:08:13,297 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-02 20:08:13,298 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:08:13,298 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 20:08:13,298 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 20:08:13,298 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration9_Loop [2022-11-02 20:08:13,298 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 20:08:13,298 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 20:08:13,299 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:08:13,301 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:08:13,303 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:08:13,305 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:08:13,308 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:08:13,317 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:08:13,323 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:08:13,325 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:08:13,372 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 20:08:13,372 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-02 20:08:13,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:08:13,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:13,382 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:08:13,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2022-11-02 20:08:13,387 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:08:13,387 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:08:13,399 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:08:13,399 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:08:13,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:13,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:08:13,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:13,424 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:08:13,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2022-11-02 20:08:13,430 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:08:13,430 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:08:13,443 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:08:13,443 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:08:13,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:13,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:08:13,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:13,472 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:08:13,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2022-11-02 20:08:13,473 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:08:13,474 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:08:13,486 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:08:13,487 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:08:13,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:13,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:08:13,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:13,519 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:08:13,531 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:08:13,531 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:08:13,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2022-11-02 20:08:13,554 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:08:13,554 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:08:13,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:13,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:08:13,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:13,582 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:08:13,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2022-11-02 20:08:13,584 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:08:13,585 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:08:13,631 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Ended with exit code 0 [2022-11-02 20:08:13,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:08:13,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:13,633 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:08:13,634 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-02 20:08:13,635 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:08:13,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2022-11-02 20:08:14,793 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-02 20:08:14,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:14,798 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 20:08:14,798 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 20:08:14,798 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 20:08:14,798 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 20:08:14,798 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-02 20:08:14,798 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:08:14,798 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 20:08:14,798 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 20:08:14,798 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration9_Loop [2022-11-02 20:08:14,799 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 20:08:14,799 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 20:08:14,799 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:08:14,802 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:08:14,807 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:08:14,809 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:08:14,811 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:08:14,820 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:08:14,822 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:08:14,824 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:08:14,874 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 20:08:14,875 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-02 20:08:14,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:08:14,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:14,876 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:08:14,887 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:08:14,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2022-11-02 20:08:14,901 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:08:14,901 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:08:14,901 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:08:14,901 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:08:14,902 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:08:14,902 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:08:14,902 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:08:14,917 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:08:14,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:14,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:08:14,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:14,963 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:08:14,967 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:08:14,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2022-11-02 20:08:14,982 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:08:14,982 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:08:14,982 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:08:14,982 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:08:14,982 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:08:14,983 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:08:14,983 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:08:15,004 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:08:15,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Ended with exit code 0 [2022-11-02 20:08:15,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:08:15,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:15,041 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:08:15,051 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:08:15,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2022-11-02 20:08:15,064 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:08:15,065 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:08:15,065 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:08:15,065 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:08:15,065 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:08:15,066 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:08:15,066 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:08:15,072 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:08:15,095 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Ended with exit code 0 [2022-11-02 20:08:15,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:08:15,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:15,096 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:08:15,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2022-11-02 20:08:15,098 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:08:15,108 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:08:15,108 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:08:15,108 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:08:15,108 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:08:15,108 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:08:15,109 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:08:15,109 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:08:15,110 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:08:15,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:15,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:08:15,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:15,135 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:08:15,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2022-11-02 20:08:15,137 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:08:15,148 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:08:15,148 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:08:15,148 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:08:15,148 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:08:15,148 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:08:15,149 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:08:15,150 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:08:15,152 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-02 20:08:15,155 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-02 20:08:15,155 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-02 20:08:15,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:08:15,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:15,159 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:08:15,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2022-11-02 20:08:15,160 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-02 20:08:15,160 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-02 20:08:15,160 INFO L513 LassoAnalysis]: Proved termination. [2022-11-02 20:08:15,160 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2022-11-02 20:08:15,187 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Ended with exit code 0 [2022-11-02 20:08:15,187 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-02 20:08:15,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:15,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:08:15,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:15,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:15,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:08:15,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:15,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:15,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:15,729 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2022-11-02 20:08:15,729 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:08:15,850 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 104 states and 111 transitions. Complement of second has 17 states. [2022-11-02 20:08:15,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2022-11-02 20:08:15,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:08:15,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 15 transitions. [2022-11-02 20:08:15,852 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 15 transitions. Stem has 44 letters. Loop has 8 letters. [2022-11-02 20:08:15,852 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:08:15,852 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-02 20:08:15,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:15,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:15,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:08:15,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:16,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:16,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:08:16,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:16,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:16,329 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 5 loop predicates [2022-11-02 20:08:16,329 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:08:16,430 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 104 states and 111 transitions. Complement of second has 17 states. [2022-11-02 20:08:16,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2022-11-02 20:08:16,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:08:16,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 15 transitions. [2022-11-02 20:08:16,431 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 15 transitions. Stem has 44 letters. Loop has 8 letters. [2022-11-02 20:08:16,431 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:08:16,432 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-02 20:08:16,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:16,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:16,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:08:16,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:16,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:08:16,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:16,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:16,965 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2022-11-02 20:08:16,965 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:08:17,126 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 135 states and 146 transitions. Complement of second has 23 states. [2022-11-02 20:08:17,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2022-11-02 20:08:17,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:08:17,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 41 transitions. [2022-11-02 20:08:17,129 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 41 transitions. Stem has 44 letters. Loop has 8 letters. [2022-11-02 20:08:17,130 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:08:17,130 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 41 transitions. Stem has 52 letters. Loop has 8 letters. [2022-11-02 20:08:17,130 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:08:17,130 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 41 transitions. Stem has 44 letters. Loop has 16 letters. [2022-11-02 20:08:17,131 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:08:17,131 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 146 transitions. [2022-11-02 20:08:17,132 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-02 20:08:17,133 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 0 states and 0 transitions. [2022-11-02 20:08:17,133 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-02 20:08:17,133 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-02 20:08:17,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-02 20:08:17,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:08:17,133 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-02 20:08:17,133 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-02 20:08:17,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:17,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:08:17,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:08:17,134 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 9 states have internal predecessors, (33), 7 states have call successors, (11), 7 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:08:17,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:17,134 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-11-02 20:08:17,134 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2022-11-02 20:08:17,134 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-02 20:08:17,134 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2022-11-02 20:08:17,135 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-02 20:08:17,135 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-02 20:08:17,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-02 20:08:17,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:08:17,135 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-02 20:08:17,135 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-02 20:08:17,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:08:17,136 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-02 20:08:17,136 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2022-11-02 20:08:17,136 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-11-02 20:08:17,136 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-02 20:08:17,136 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-11-02 20:08:17,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 02.11 08:08:17 BoogieIcfgContainer [2022-11-02 20:08:17,146 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-02 20:08:17,147 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:08:17,147 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:08:17,147 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:08:17,148 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:07:53" (3/4) ... [2022-11-02 20:08:17,152 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 20:08:17,152 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:08:17,153 INFO L158 Benchmark]: Toolchain (without parser) took 24092.34ms. Allocated memory was 86.0MB in the beginning and 169.9MB in the end (delta: 83.9MB). Free memory was 48.6MB in the beginning and 70.8MB in the end (delta: -22.2MB). Peak memory consumption was 60.8MB. Max. memory is 16.1GB. [2022-11-02 20:08:17,153 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 86.0MB. Free memory was 65.0MB in the beginning and 64.9MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:08:17,154 INFO L158 Benchmark]: CACSL2BoogieTranslator took 422.20ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 48.5MB in the beginning and 81.1MB in the end (delta: -32.6MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. [2022-11-02 20:08:17,155 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.99ms. Allocated memory is still 104.9MB. Free memory was 81.1MB in the beginning and 79.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:08:17,155 INFO L158 Benchmark]: Boogie Preprocessor took 39.98ms. Allocated memory is still 104.9MB. Free memory was 79.9MB in the beginning and 78.9MB in the end (delta: 998.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:08:17,156 INFO L158 Benchmark]: RCFGBuilder took 326.83ms. Allocated memory is still 104.9MB. Free memory was 78.6MB in the beginning and 69.5MB in the end (delta: 9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 20:08:17,156 INFO L158 Benchmark]: BuchiAutomizer took 23249.89ms. Allocated memory was 104.9MB in the beginning and 169.9MB in the end (delta: 65.0MB). Free memory was 69.2MB in the beginning and 70.8MB in the end (delta: -1.6MB). Peak memory consumption was 65.3MB. Max. memory is 16.1GB. [2022-11-02 20:08:17,157 INFO L158 Benchmark]: Witness Printer took 5.42ms. Allocated memory is still 169.9MB. Free memory is still 70.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:08:17,159 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 86.0MB. Free memory was 65.0MB in the beginning and 64.9MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 422.20ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 48.5MB in the beginning and 81.1MB in the end (delta: -32.6MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.99ms. Allocated memory is still 104.9MB. Free memory was 81.1MB in the beginning and 79.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.98ms. Allocated memory is still 104.9MB. Free memory was 79.9MB in the beginning and 78.9MB in the end (delta: 998.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 326.83ms. Allocated memory is still 104.9MB. Free memory was 78.6MB in the beginning and 69.5MB in the end (delta: 9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 23249.89ms. Allocated memory was 104.9MB in the beginning and 169.9MB in the end (delta: 65.0MB). Free memory was 69.2MB in the beginning and 70.8MB in the end (delta: -1.6MB). Peak memory consumption was 65.3MB. Max. memory is 16.1GB. * Witness Printer took 5.42ms. Allocated memory is still 169.9MB. Free memory is still 70.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 12 terminating modules (8 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 7 locations. One deterministic module has affine ranking function n and consists of 12 locations. One deterministic module has affine ranking function n and consists of 13 locations. One nondeterministic module has affine ranking function n and consists of 8 locations. 8 modules have a trivial ranking function, the largest among these consists of 20 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 23.1s and 10 iterations. TraceHistogramMax:8. Analysis of lassos took 16.3s. Construction of modules took 1.7s. Büchi inclusion checks took 4.8s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 10. Automata minimization 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 96 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/16 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 611 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 590 mSDsluCounter, 878 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 635 mSDsCounter, 346 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2166 IncrementalHoareTripleChecker+Invalid, 2512 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 346 mSolverCounterUnsat, 243 mSDtfsCounter, 2166 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT1 conc0 concLT2 SILN0 SILU0 SILI4 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax100 hnf100 lsp92 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq179 hnf93 smp78 dnf100 smp100 tf109 neg96 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 35ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 16 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 4.7s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-11-02 20:08:17,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:17,421 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2022-11-02 20:08:17,623 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-11-02 20:08:17,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2022-11-02 20:08:18,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:18,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:18,421 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-11-02 20:08:18,622 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-11-02 20:08:18,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-11-02 20:08:19,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:19,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203db2a0-9b0e-437d-beae-116084a8e796/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE