./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfdaec0-bd2a-428f-98bd-dcdfc1caf79f/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfdaec0-bd2a-428f-98bd-dcdfc1caf79f/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfdaec0-bd2a-428f-98bd-dcdfc1caf79f/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfdaec0-bd2a-428f-98bd-dcdfc1caf79f/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfdaec0-bd2a-428f-98bd-dcdfc1caf79f/bin/utaipan-q2qaUkNPG8/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfdaec0-bd2a-428f-98bd-dcdfc1caf79f/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c27ad91a5bec233234e07a14bfd5505e082df4cd ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:31:51,794 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:31:51,797 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:31:51,833 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:31:51,834 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:31:51,835 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:31:51,837 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:31:51,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:31:51,843 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:31:51,844 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:31:51,846 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:31:51,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:31:51,848 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:31:51,850 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:31:51,852 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:31:51,854 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:31:51,855 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:31:51,856 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:31:51,859 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:31:51,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:31:51,863 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:31:51,865 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:31:51,867 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:31:51,868 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:31:51,873 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:31:51,873 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:31:51,874 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:31:51,875 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:31:51,876 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:31:51,878 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:31:51,878 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:31:51,879 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:31:51,881 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:31:51,882 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:31:51,883 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:31:51,884 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:31:51,885 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:31:51,885 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:31:51,886 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:31:51,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:31:51,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:31:51,890 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfdaec0-bd2a-428f-98bd-dcdfc1caf79f/bin/utaipan-q2qaUkNPG8/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-10-13 07:31:51,922 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:31:51,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:31:51,923 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:31:51,923 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:31:51,924 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:31:51,924 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:31:51,924 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:31:51,924 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:31:51,925 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:31:51,925 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:31:51,925 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:31:51,925 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:31:51,926 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:31:51,926 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:31:51,926 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:31:51,927 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:31:51,927 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 07:31:51,927 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:31:51,928 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:31:51,928 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:31:51,928 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:31:51,928 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:31:51,929 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-13 07:31:51,929 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:31:51,929 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:31:51,929 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:31:51,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:31:51,930 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:31:51,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:31:51,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:31:51,931 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:31:51,931 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:31:51,931 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:31:51,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:31:51,932 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:31:51,932 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:31:51,932 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:31:51,932 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_fdfdaec0-bd2a-428f-98bd-dcdfc1caf79f/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfdaec0-bd2a-428f-98bd-dcdfc1caf79f/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c27ad91a5bec233234e07a14bfd5505e082df4cd [2021-10-13 07:31:52,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:31:52,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:31:52,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:31:52,236 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:31:52,237 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:31:52,238 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfdaec0-bd2a-428f-98bd-dcdfc1caf79f/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c [2021-10-13 07:31:52,315 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfdaec0-bd2a-428f-98bd-dcdfc1caf79f/bin/utaipan-q2qaUkNPG8/data/de7b89b96/c3cfc38bf6ba45c3ab0fce79fd560b61/FLAG170677133 [2021-10-13 07:31:52,862 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:31:52,862 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfdaec0-bd2a-428f-98bd-dcdfc1caf79f/sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c [2021-10-13 07:31:52,868 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfdaec0-bd2a-428f-98bd-dcdfc1caf79f/bin/utaipan-q2qaUkNPG8/data/de7b89b96/c3cfc38bf6ba45c3ab0fce79fd560b61/FLAG170677133 [2021-10-13 07:31:53,283 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfdaec0-bd2a-428f-98bd-dcdfc1caf79f/bin/utaipan-q2qaUkNPG8/data/de7b89b96/c3cfc38bf6ba45c3ab0fce79fd560b61 [2021-10-13 07:31:53,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:31:53,291 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:31:53,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:31:53,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:31:53,298 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:31:53,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:31:53" (1/1) ... [2021-10-13 07:31:53,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bc724d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:31:53, skipping insertion in model container [2021-10-13 07:31:53,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:31:53" (1/1) ... [2021-10-13 07:31:53,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:31:53,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:31:53,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:31:53,528 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:31:53,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:31:53,565 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:31:53,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:31:53 WrapperNode [2021-10-13 07:31:53,567 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:31:53,568 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:31:53,569 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:31:53,569 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:31:53,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:31:53" (1/1) ... [2021-10-13 07:31:53,584 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:31:53" (1/1) ... [2021-10-13 07:31:53,603 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:31:53,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:31:53,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:31:53,605 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:31:53,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:31:53" (1/1) ... [2021-10-13 07:31:53,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:31:53" (1/1) ... [2021-10-13 07:31:53,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:31:53" (1/1) ... [2021-10-13 07:31:53,619 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:31:53" (1/1) ... [2021-10-13 07:31:53,627 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:31:53" (1/1) ... [2021-10-13 07:31:53,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:31:53" (1/1) ... [2021-10-13 07:31:53,632 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:31:53" (1/1) ... [2021-10-13 07:31:53,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:31:53,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:31:53,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:31:53,644 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:31:53,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:31:53" (1/1) ... [2021-10-13 07:31:53,653 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:31:53,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfdaec0-bd2a-428f-98bd-dcdfc1caf79f/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:31:53,686 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfdaec0-bd2a-428f-98bd-dcdfc1caf79f/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:31:53,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfdaec0-bd2a-428f-98bd-dcdfc1caf79f/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:31:53,739 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-10-13 07:31:53,740 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-10-13 07:31:53,740 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-10-13 07:31:53,740 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-10-13 07:31:53,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:31:53,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:31:53,962 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:31:53,962 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-13 07:31:53,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:31:53 BoogieIcfgContainer [2021-10-13 07:31:53,965 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:31:53,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:31:53,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:31:53,970 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:31:53,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:31:53" (1/3) ... [2021-10-13 07:31:53,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56775f85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:31:53, skipping insertion in model container [2021-10-13 07:31:53,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:31:53" (2/3) ... [2021-10-13 07:31:53,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56775f85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:31:53, skipping insertion in model container [2021-10-13 07:31:53,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:31:53" (3/3) ... [2021-10-13 07:31:53,974 INFO L111 eAbstractionObserver]: Analyzing ICFG MutualRecursion_1a.c [2021-10-13 07:31:53,979 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:31:53,980 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-13 07:31:54,028 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:31:54,035 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:31:54,035 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-10-13 07:31:54,052 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 32 states have internal predecessors, (34), 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) [2021-10-13 07:31:54,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 07:31:54,057 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:31:54,057 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 07:31:54,058 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2021-10-13 07:31:54,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:31:54,064 INFO L82 PathProgramCache]: Analyzing trace with hash 68150020, now seen corresponding path program 1 times [2021-10-13 07:31:54,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:31:54,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863195658] [2021-10-13 07:31:54,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:31:54,076 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:31:54,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:31:54,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:31:54,222 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:31:54,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863195658] [2021-10-13 07:31:54,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863195658] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:31:54,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:31:54,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:31:54,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308169703] [2021-10-13 07:31:54,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:31:54,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:31:54,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:31:54,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:31:54,245 INFO L87 Difference]: Start difference. First operand has 40 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 32 states have internal predecessors, (34), 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 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:31:54,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:31:54,364 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2021-10-13 07:31:54,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:31:54,366 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-13 07:31:54,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:31:54,375 INFO L225 Difference]: With dead ends: 62 [2021-10-13 07:31:54,375 INFO L226 Difference]: Without dead ends: 56 [2021-10-13 07:31:54,378 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.6ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:31:54,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-13 07:31:54,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2021-10-13 07:31:54,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 40 states have internal predecessors, (46), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-10-13 07:31:54,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2021-10-13 07:31:54,440 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 5 [2021-10-13 07:31:54,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:31:54,440 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2021-10-13 07:31:54,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:31:54,441 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2021-10-13 07:31:54,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:31:54,441 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:31:54,442 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:31:54,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:31:54,443 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2021-10-13 07:31:54,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:31:54,444 INFO L82 PathProgramCache]: Analyzing trace with hash 2112650676, now seen corresponding path program 1 times [2021-10-13 07:31:54,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:31:54,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731394400] [2021-10-13 07:31:54,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:31:54,456 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:31:54,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:31:54,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:31:54,480 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:31:54,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731394400] [2021-10-13 07:31:54,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731394400] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:31:54,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:31:54,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:31:54,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089094641] [2021-10-13 07:31:54,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:31:54,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:31:54,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:31:54,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:31:54,485 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:31:54,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:31:54,510 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2021-10-13 07:31:54,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:31:54,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 07:31:54,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:31:54,513 INFO L225 Difference]: With dead ends: 52 [2021-10-13 07:31:54,513 INFO L226 Difference]: Without dead ends: 50 [2021-10-13 07:31:54,514 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:31:54,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-13 07:31:54,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2021-10-13 07:31:54,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 38 states have internal predecessors, (42), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-10-13 07:31:54,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2021-10-13 07:31:54,539 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 6 [2021-10-13 07:31:54,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:31:54,540 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2021-10-13 07:31:54,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:31:54,541 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2021-10-13 07:31:54,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 07:31:54,545 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:31:54,545 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:31:54,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:31:54,546 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2021-10-13 07:31:54,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:31:54,548 INFO L82 PathProgramCache]: Analyzing trace with hash 803040358, now seen corresponding path program 1 times [2021-10-13 07:31:54,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:31:54,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853447408] [2021-10-13 07:31:54,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:31:54,552 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:31:54,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:31:54,691 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:31:54,692 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:31:54,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853447408] [2021-10-13 07:31:54,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853447408] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:31:54,693 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:31:54,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 07:31:54,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18331849] [2021-10-13 07:31:54,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 07:31:54,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:31:54,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 07:31:54,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:31:54,696 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:31:54,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:31:54,917 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2021-10-13 07:31:54,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 07:31:54,921 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 07:31:54,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:31:54,922 INFO L225 Difference]: With dead ends: 66 [2021-10-13 07:31:54,923 INFO L226 Difference]: Without dead ends: 63 [2021-10-13 07:31:54,923 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 109.0ms TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-10-13 07:31:54,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-13 07:31:54,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2021-10-13 07:31:54,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 46 states have internal predecessors, (53), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-10-13 07:31:54,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2021-10-13 07:31:54,951 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 13 [2021-10-13 07:31:54,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:31:54,951 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2021-10-13 07:31:54,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:31:54,952 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2021-10-13 07:31:54,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 07:31:54,953 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:31:54,953 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:31:54,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 07:31:54,953 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2021-10-13 07:31:54,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:31:54,954 INFO L82 PathProgramCache]: Analyzing trace with hash -265858514, now seen corresponding path program 1 times [2021-10-13 07:31:54,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:31:54,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305027675] [2021-10-13 07:31:54,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:31:54,955 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:31:54,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:31:55,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 07:31:55,014 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:31:55,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305027675] [2021-10-13 07:31:55,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305027675] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:31:55,015 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:31:55,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:31:55,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361552686] [2021-10-13 07:31:55,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:31:55,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:31:55,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:31:55,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:31:55,018 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-10-13 07:31:55,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:31:55,028 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2021-10-13 07:31:55,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:31:55,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) Word has length 17 [2021-10-13 07:31:55,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:31:55,030 INFO L225 Difference]: With dead ends: 61 [2021-10-13 07:31:55,030 INFO L226 Difference]: Without dead ends: 60 [2021-10-13 07:31:55,031 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:31:55,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-13 07:31:55,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2021-10-13 07:31:55,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 45 states have internal predecessors, (52), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-10-13 07:31:55,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2021-10-13 07:31:55,043 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 17 [2021-10-13 07:31:55,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:31:55,043 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2021-10-13 07:31:55,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-10-13 07:31:55,044 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2021-10-13 07:31:55,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 07:31:55,045 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:31:55,045 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:31:55,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 07:31:55,046 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2021-10-13 07:31:55,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:31:55,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1650762684, now seen corresponding path program 1 times [2021-10-13 07:31:55,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:31:55,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943582808] [2021-10-13 07:31:55,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:31:55,048 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:31:55,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:31:55,097 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-13 07:31:55,097 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:31:55,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943582808] [2021-10-13 07:31:55,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943582808] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:31:55,098 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:31:55,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:31:55,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823629422] [2021-10-13 07:31:55,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:31:55,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:31:55,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:31:55,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:31:55,100 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-13 07:31:55,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:31:55,143 INFO L93 Difference]: Finished difference Result 93 states and 122 transitions. [2021-10-13 07:31:55,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:31:55,144 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2021-10-13 07:31:55,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:31:55,146 INFO L225 Difference]: With dead ends: 93 [2021-10-13 07:31:55,147 INFO L226 Difference]: Without dead ends: 92 [2021-10-13 07:31:55,147 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.3ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:31:55,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-13 07:31:55,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 78. [2021-10-13 07:31:55,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 58 states have (on average 1.1724137931034482) internal successors, (68), 59 states have internal predecessors, (68), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (20), 14 states have call predecessors, (20), 11 states have call successors, (20) [2021-10-13 07:31:55,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2021-10-13 07:31:55,166 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 21 [2021-10-13 07:31:55,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:31:55,166 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2021-10-13 07:31:55,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-13 07:31:55,167 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2021-10-13 07:31:55,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 07:31:55,168 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:31:55,168 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:31:55,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 07:31:55,169 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2021-10-13 07:31:55,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:31:55,170 INFO L82 PathProgramCache]: Analyzing trace with hash 365964416, now seen corresponding path program 1 times [2021-10-13 07:31:55,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:31:55,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909864451] [2021-10-13 07:31:55,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:31:55,171 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:31:55,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:31:55,250 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-13 07:31:55,250 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:31:55,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909864451] [2021-10-13 07:31:55,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909864451] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:31:55,251 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:31:55,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:31:55,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832275010] [2021-10-13 07:31:55,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:31:55,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:31:55,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:31:55,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:31:55,254 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-13 07:31:55,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:31:55,296 INFO L93 Difference]: Finished difference Result 93 states and 119 transitions. [2021-10-13 07:31:55,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:31:55,297 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2021-10-13 07:31:55,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:31:55,298 INFO L225 Difference]: With dead ends: 93 [2021-10-13 07:31:55,298 INFO L226 Difference]: Without dead ends: 89 [2021-10-13 07:31:55,299 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.5ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:31:55,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-10-13 07:31:55,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 78. [2021-10-13 07:31:55,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 58 states have (on average 1.1724137931034482) internal successors, (68), 60 states have internal predecessors, (68), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (19), 13 states have call predecessors, (19), 11 states have call successors, (19) [2021-10-13 07:31:55,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 99 transitions. [2021-10-13 07:31:55,313 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 99 transitions. Word has length 22 [2021-10-13 07:31:55,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:31:55,314 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 99 transitions. [2021-10-13 07:31:55,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-13 07:31:55,314 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 99 transitions. [2021-10-13 07:31:55,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-13 07:31:55,316 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:31:55,316 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:31:55,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 07:31:55,317 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2021-10-13 07:31:55,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:31:55,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1064471087, now seen corresponding path program 1 times [2021-10-13 07:31:55,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:31:55,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953301614] [2021-10-13 07:31:55,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:31:55,318 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:31:55,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:31:55,366 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-10-13 07:31:55,367 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:31:55,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953301614] [2021-10-13 07:31:55,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953301614] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:31:55,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369608031] [2021-10-13 07:31:55,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:31:55,369 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:31:55,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfdaec0-bd2a-428f-98bd-dcdfc1caf79f/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:31:55,377 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfdaec0-bd2a-428f-98bd-dcdfc1caf79f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:31:55,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfdaec0-bd2a-428f-98bd-dcdfc1caf79f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:31:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:31:55,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:31:55,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:31:55,637 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 07:31:55,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:31:55,804 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-10-13 07:31:55,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369608031] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-13 07:31:55,805 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:31:55,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 6 [2021-10-13 07:31:55,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546179382] [2021-10-13 07:31:55,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:31:55,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:31:55,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:31:55,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:31:55,807 INFO L87 Difference]: Start difference. First operand 78 states and 99 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-13 07:31:55,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:31:55,872 INFO L93 Difference]: Finished difference Result 149 states and 199 transitions. [2021-10-13 07:31:55,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:31:55,873 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2021-10-13 07:31:55,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:31:55,877 INFO L225 Difference]: With dead ends: 149 [2021-10-13 07:31:55,877 INFO L226 Difference]: Without dead ends: 78 [2021-10-13 07:31:55,884 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 60 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.1ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:31:55,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-13 07:31:55,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-10-13 07:31:55,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 58 states have (on average 1.1379310344827587) internal successors, (66), 60 states have internal predecessors, (66), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (19), 13 states have call predecessors, (19), 11 states have call successors, (19) [2021-10-13 07:31:55,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 97 transitions. [2021-10-13 07:31:55,916 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 97 transitions. Word has length 32 [2021-10-13 07:31:55,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:31:55,918 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 97 transitions. [2021-10-13 07:31:55,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-13 07:31:55,919 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 97 transitions. [2021-10-13 07:31:55,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-13 07:31:55,925 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:31:55,926 INFO L512 BasicCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:31:55,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfdaec0-bd2a-428f-98bd-dcdfc1caf79f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:31:56,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfdaec0-bd2a-428f-98bd-dcdfc1caf79f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-13 07:31:56,141 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2021-10-13 07:31:56,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:31:56,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1929359181, now seen corresponding path program 1 times [2021-10-13 07:31:56,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:31:56,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596629673] [2021-10-13 07:31:56,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:31:56,142 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:31:56,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:31:56,264 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 30 proven. 3 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-10-13 07:31:56,265 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:31:56,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596629673] [2021-10-13 07:31:56,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596629673] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:31:56,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498116974] [2021-10-13 07:31:56,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:31:56,266 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:31:56,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfdaec0-bd2a-428f-98bd-dcdfc1caf79f/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:31:56,268 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfdaec0-bd2a-428f-98bd-dcdfc1caf79f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:31:56,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfdaec0-bd2a-428f-98bd-dcdfc1caf79f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 07:31:56,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:31:56,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:31:56,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:31:56,552 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 30 proven. 3 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-10-13 07:31:56,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:31:56,860 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 30 proven. 3 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-10-13 07:31:56,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498116974] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:31:56,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [662004271] [2021-10-13 07:31:56,885 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2021-10-13 07:31:56,885 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:31:56,891 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-13 07:31:56,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-13 07:31:56,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2021-10-13 07:31:56,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759925929] [2021-10-13 07:31:56,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 07:31:56,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:31:56,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 07:31:56,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:31:56,908 INFO L87 Difference]: Start difference. First operand 78 states and 97 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 5 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) [2021-10-13 07:31:56,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:31:56,980 INFO L93 Difference]: Finished difference Result 115 states and 144 transitions. [2021-10-13 07:31:56,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:31:56,980 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 5 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) Word has length 68 [2021-10-13 07:31:56,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:31:56,983 INFO L225 Difference]: With dead ends: 115 [2021-10-13 07:31:56,984 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:31:56,986 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 132 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 64.1ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-13 07:31:56,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:31:56,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:31:56,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:31:56,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:31:56,988 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 68 [2021-10-13 07:31:56,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:31:56,993 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:31:56,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 5 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) [2021-10-13 07:31:56,997 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:31:56,997 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:31:56,999 INFO L764 garLoopResultBuilder]: Registering result SAFE for location fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:31:57,000 INFO L764 garLoopResultBuilder]: Registering result SAFE for location fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:31:57,000 INFO L764 garLoopResultBuilder]: Registering result SAFE for location fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:31:57,000 INFO L764 garLoopResultBuilder]: Registering result SAFE for location fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:31:57,000 INFO L764 garLoopResultBuilder]: Registering result SAFE for location gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:31:57,001 INFO L764 garLoopResultBuilder]: Registering result SAFE for location gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:31:57,001 INFO L764 garLoopResultBuilder]: Registering result SAFE for location gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:31:57,001 INFO L764 garLoopResultBuilder]: Registering result SAFE for location gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:31:57,001 INFO L764 garLoopResultBuilder]: Registering result SAFE for location gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:31:57,001 INFO L764 garLoopResultBuilder]: Registering result SAFE for location gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:31:57,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfdaec0-bd2a-428f-98bd-dcdfc1caf79f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:31:57,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfdaec0-bd2a-428f-98bd-dcdfc1caf79f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-13 07:31:57,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:31:57,233 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,236 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,236 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,238 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,239 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,240 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,242 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,242 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,243 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,244 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,246 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,247 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,247 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,248 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,248 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,250 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,250 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,252 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,254 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,255 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,256 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,256 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,257 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,257 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,258 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,259 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,260 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,261 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,262 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,263 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,264 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,264 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,265 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,266 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,267 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,269 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,270 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,271 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,271 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,272 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,274 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,276 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,277 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,279 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,280 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,280 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,281 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,281 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,282 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,282 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,283 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,283 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,284 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,284 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,285 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,286 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,286 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,287 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,287 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,288 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,289 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,289 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,290 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,290 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,291 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,291 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,292 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,292 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,305 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,306 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,306 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,308 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,309 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,310 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,311 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,312 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:31:57,442 INFO L857 garLoopResultBuilder]: For program point fFINAL(lines 11 15) no Hoare annotation was computed. [2021-10-13 07:31:57,442 INFO L853 garLoopResultBuilder]: At program point L14(line 14) the Hoare annotation is: (or (not (<= |f_#in~x| 2147483646)) (and (<= f_~x 2147483646) (<= |f_#in~x| f_~x) (<= 1 f_~x))) [2021-10-13 07:31:57,442 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-10-13 07:31:57,442 INFO L857 garLoopResultBuilder]: For program point L14-1(line 14) no Hoare annotation was computed. [2021-10-13 07:31:57,442 INFO L857 garLoopResultBuilder]: For program point L14-2(line 14) no Hoare annotation was computed. [2021-10-13 07:31:57,443 INFO L857 garLoopResultBuilder]: For program point L14-3(line 14) no Hoare annotation was computed. [2021-10-13 07:31:57,443 INFO L853 garLoopResultBuilder]: At program point L14-4(line 14) the Hoare annotation is: (or (not (<= |f_#in~x| 2147483646)) (and (<= f_~x 2147483646) (<= |f_#in~x| f_~x) (<= 1 f_~x))) [2021-10-13 07:31:57,443 INFO L857 garLoopResultBuilder]: For program point L14-5(line 14) no Hoare annotation was computed. [2021-10-13 07:31:57,443 INFO L857 garLoopResultBuilder]: For program point fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-10-13 07:31:57,443 INFO L857 garLoopResultBuilder]: For program point fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-10-13 07:31:57,443 INFO L857 garLoopResultBuilder]: For program point L14-6(line 14) no Hoare annotation was computed. [2021-10-13 07:31:57,443 INFO L857 garLoopResultBuilder]: For program point fEXIT(lines 11 15) no Hoare annotation was computed. [2021-10-13 07:31:57,443 INFO L857 garLoopResultBuilder]: For program point L14-7(line 14) no Hoare annotation was computed. [2021-10-13 07:31:57,444 INFO L860 garLoopResultBuilder]: At program point fENTRY(lines 11 15) the Hoare annotation is: true [2021-10-13 07:31:57,444 INFO L857 garLoopResultBuilder]: For program point fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-10-13 07:31:57,444 INFO L857 garLoopResultBuilder]: For program point fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-10-13 07:31:57,444 INFO L857 garLoopResultBuilder]: For program point gFINAL(lines 17 21) no Hoare annotation was computed. [2021-10-13 07:31:57,444 INFO L857 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2021-10-13 07:31:57,444 INFO L857 garLoopResultBuilder]: For program point L19(lines 19 20) no Hoare annotation was computed. [2021-10-13 07:31:57,444 INFO L857 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2021-10-13 07:31:57,445 INFO L853 garLoopResultBuilder]: At program point L20-2(line 20) the Hoare annotation is: (and (or (not (<= |g_#in~x| 2147483647)) (and (<= |g_#in~x| g_~x) (<= g_~x 2147483647))) (or (not (<= |g_#in~x| 2147483646)) (and (<= 1 g_~x) (<= g_~x 2147483646)))) [2021-10-13 07:31:57,445 INFO L857 garLoopResultBuilder]: For program point L20-3(line 20) no Hoare annotation was computed. [2021-10-13 07:31:57,445 INFO L857 garLoopResultBuilder]: For program point L20-4(line 20) no Hoare annotation was computed. [2021-10-13 07:31:57,445 INFO L857 garLoopResultBuilder]: For program point L20-5(line 20) no Hoare annotation was computed. [2021-10-13 07:31:57,445 INFO L853 garLoopResultBuilder]: At program point L20-6(line 20) the Hoare annotation is: (and (or (not (<= |g_#in~x| 2147483646)) (and (<= 1 g_~x) (<= |g_#t~ret2| 0) (<= g_~x 2147483646) (<= 0 |g_#t~ret2|))) (or (not (<= |g_#in~x| 2147483647)) (<= |g_#in~x| 1))) [2021-10-13 07:31:57,445 INFO L857 garLoopResultBuilder]: For program point L20-7(line 20) no Hoare annotation was computed. [2021-10-13 07:31:57,445 INFO L857 garLoopResultBuilder]: For program point L20-8(line 20) no Hoare annotation was computed. [2021-10-13 07:31:57,445 INFO L857 garLoopResultBuilder]: For program point L20-9(line 20) no Hoare annotation was computed. [2021-10-13 07:31:57,446 INFO L857 garLoopResultBuilder]: For program point gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-13 07:31:57,446 INFO L857 garLoopResultBuilder]: For program point gEXIT(lines 17 21) no Hoare annotation was computed. [2021-10-13 07:31:57,446 INFO L857 garLoopResultBuilder]: For program point gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-13 07:31:57,446 INFO L860 garLoopResultBuilder]: At program point gENTRY(lines 17 21) the Hoare annotation is: true [2021-10-13 07:31:57,446 INFO L857 garLoopResultBuilder]: For program point gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-13 07:31:57,446 INFO L857 garLoopResultBuilder]: For program point gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-13 07:31:57,446 INFO L857 garLoopResultBuilder]: For program point gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-13 07:31:57,446 INFO L857 garLoopResultBuilder]: For program point gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-13 07:31:57,447 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:31:57,447 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:31:57,447 INFO L853 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2021-10-13 07:31:57,447 INFO L857 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2021-10-13 07:31:57,458 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:31:57,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:31:57 BoogieIcfgContainer [2021-10-13 07:31:57,463 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:31:57,464 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:31:57,464 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:31:57,464 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:31:57,464 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:31:53" (3/4) ... [2021-10-13 07:31:57,467 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:31:57,476 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2021-10-13 07:31:57,476 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure g [2021-10-13 07:31:57,483 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-13 07:31:57,483 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-13 07:31:57,484 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:31:57,519 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfdaec0-bd2a-428f-98bd-dcdfc1caf79f/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:31:57,520 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:31:57,521 INFO L168 Benchmark]: Toolchain (without parser) took 4229.53 ms. Allocated memory was 104.9 MB in the beginning and 142.6 MB in the end (delta: 37.7 MB). Free memory was 72.5 MB in the beginning and 108.0 MB in the end (delta: -35.5 MB). Peak memory consumption was 1.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:31:57,522 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 104.9 MB. Free memory was 60.2 MB in the beginning and 60.1 MB in the end (delta: 54.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:31:57,522 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.36 ms. Allocated memory is still 104.9 MB. Free memory was 72.3 MB in the beginning and 80.6 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:31:57,523 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.47 ms. Allocated memory is still 104.9 MB. Free memory was 80.6 MB in the beginning and 79.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:31:57,523 INFO L168 Benchmark]: Boogie Preprocessor took 36.12 ms. Allocated memory is still 104.9 MB. Free memory was 79.5 MB in the beginning and 78.5 MB in the end (delta: 982.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:31:57,524 INFO L168 Benchmark]: RCFGBuilder took 322.54 ms. Allocated memory is still 104.9 MB. Free memory was 78.5 MB in the beginning and 69.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:31:57,524 INFO L168 Benchmark]: TraceAbstraction took 3496.54 ms. Allocated memory was 104.9 MB in the beginning and 142.6 MB in the end (delta: 37.7 MB). Free memory was 68.8 MB in the beginning and 111.2 MB in the end (delta: -42.4 MB). Peak memory consumption was 69.8 MB. Max. memory is 16.1 GB. [2021-10-13 07:31:57,525 INFO L168 Benchmark]: Witness Printer took 56.40 ms. Allocated memory is still 142.6 MB. Free memory was 111.2 MB in the beginning and 108.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:31:57,527 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 104.9 MB. Free memory was 60.2 MB in the beginning and 60.1 MB in the end (delta: 54.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 272.36 ms. Allocated memory is still 104.9 MB. Free memory was 72.3 MB in the beginning and 80.6 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.47 ms. Allocated memory is still 104.9 MB. Free memory was 80.6 MB in the beginning and 79.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.12 ms. Allocated memory is still 104.9 MB. Free memory was 79.5 MB in the beginning and 78.5 MB in the end (delta: 982.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 322.54 ms. Allocated memory is still 104.9 MB. Free memory was 78.5 MB in the beginning and 69.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3496.54 ms. Allocated memory was 104.9 MB in the beginning and 142.6 MB in the end (delta: 37.7 MB). Free memory was 68.8 MB in the beginning and 111.2 MB in the end (delta: -42.4 MB). Peak memory consumption was 69.8 MB. Max. memory is 16.1 GB. * Witness Printer took 56.40 ms. Allocated memory is still 142.6 MB. Free memory was 111.2 MB in the beginning and 108.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 40 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 3431.4ms, OverallIterations: 8, TraceHistogramMax: 6, EmptinessCheckTime: 25.3ms, AutomataDifference: 675.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 213.2ms, InitialAbstractionConstructionTime: 12.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 248 SDtfs, 192 SDslu, 521 SDs, 0 SdLazy, 312 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 272.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 244 GetRequests, 198 SyntacticMatches, 6 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 261.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=5, InterpolantAutomatonStates: 46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 176.2ms AutomataMinimizationTime, 8 MinimizatonAttempts, 39 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 7 LocationsWithAnnotation, 82 PreInvPairs, 91 NumberOfFragments, 87 HoareAnnotationTreeSize, 82 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 79.4ms HoareSimplificationTime, 7 FomulaSimplificationsInter, 46 FormulaSimplificationTreeSizeReductionInter, 123.7ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 33.9ms SsaConstructionTime, 157.6ms SatisfiabilityAnalysisTime, 1321.8ms InterpolantComputationTime, 284 NumberOfCodeBlocks, 284 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 372 ConstructedInterpolants, 0 QuantifiedInterpolants, 642 SizeOfPredicates, 5 NumberOfNonLiveVariables, 206 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 12 InterpolantComputations, 7 PerfectInterpolantSequences, 304/319 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-13 07:31:57,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdfdaec0-bd2a-428f-98bd-dcdfc1caf79f/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...