./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/sum_20x0-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/sum_20x0-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba --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 32bit --witnessprinter.graph.data.programhash 0b12653f6fa3db43ddf9a1a43787bd2cd7fe91d3e4035502f1ea10705d9c83a6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 01:53:42,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:53:42,805 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:53:42,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:53:42,828 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:53:42,830 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:53:42,831 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:53:42,833 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:53:42,834 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:53:42,835 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:53:42,837 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:53:42,838 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:53:42,838 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:53:42,839 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:53:42,840 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:53:42,842 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:53:42,842 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:53:42,844 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:53:42,845 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:53:42,848 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:53:42,849 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:53:42,851 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:53:42,852 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:53:42,853 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:53:42,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:53:42,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:53:42,858 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:53:42,859 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:53:42,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:53:42,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:53:42,861 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:53:42,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:53:42,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:53:42,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:53:42,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:53:42,865 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:53:42,866 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:53:42,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:53:42,867 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:53:42,868 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:53:42,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:53:42,871 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-22 01:53:42,904 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:53:42,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:53:42,918 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:53:42,919 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:53:42,920 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:53:42,920 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:53:42,920 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:53:42,920 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:53:42,921 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:53:42,921 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:53:42,922 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:53:42,922 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:53:42,923 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:53:42,923 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:53:42,923 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:53:42,923 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:53:42,924 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:53:42,924 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:53:42,925 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:53:42,926 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 01:53:42,926 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 01:53:42,926 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:53:42,926 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 01:53:42,927 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:53:42,927 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:53:42,927 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:53:42,928 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:53:42,928 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-22 01:53:42,929 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 01:53:42,929 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:53:42,929 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:53:42,929 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:53:42,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:53:42,930 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:53:42,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:53:42,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:53:42,931 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:53:42,931 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:53:42,931 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:53:42,931 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:53:42,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:53:42,932 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:53:42,932 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:53:42,932 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b12653f6fa3db43ddf9a1a43787bd2cd7fe91d3e4035502f1ea10705d9c83a6 [2022-11-22 01:53:43,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:53:43,288 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:53:43,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:53:43,292 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:53:43,293 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:53:43,294 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/recursive-simple/sum_20x0-1.c [2022-11-22 01:53:46,443 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:53:46,668 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:53:46,668 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/sv-benchmarks/c/recursive-simple/sum_20x0-1.c [2022-11-22 01:53:46,673 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/data/1e86d0829/65c30e76b0864906b794c81c1da26520/FLAG4b18879e5 [2022-11-22 01:53:46,688 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/data/1e86d0829/65c30e76b0864906b794c81c1da26520 [2022-11-22 01:53:46,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:53:46,696 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:53:46,698 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:53:46,698 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:53:46,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:53:46,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:53:46" (1/1) ... [2022-11-22 01:53:46,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cd159c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:53:46, skipping insertion in model container [2022-11-22 01:53:46,705 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:53:46" (1/1) ... [2022-11-22 01:53:46,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:53:46,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:53:46,873 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/sv-benchmarks/c/recursive-simple/sum_20x0-1.c[481,494] [2022-11-22 01:53:46,874 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:53:46,885 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:53:46,898 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/sv-benchmarks/c/recursive-simple/sum_20x0-1.c[481,494] [2022-11-22 01:53:46,899 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:53:46,912 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:53:46,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:53:46 WrapperNode [2022-11-22 01:53:46,913 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:53:46,914 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:53:46,915 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:53:46,915 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:53:46,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:53:46" (1/1) ... [2022-11-22 01:53:46,931 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:53:46" (1/1) ... [2022-11-22 01:53:46,949 INFO L138 Inliner]: procedures = 12, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2022-11-22 01:53:46,950 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:53:46,951 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:53:46,951 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:53:46,951 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:53:46,961 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:53:46" (1/1) ... [2022-11-22 01:53:46,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:53:46" (1/1) ... [2022-11-22 01:53:46,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:53:46" (1/1) ... [2022-11-22 01:53:46,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:53:46" (1/1) ... [2022-11-22 01:53:46,983 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:53:46" (1/1) ... [2022-11-22 01:53:46,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:53:46" (1/1) ... [2022-11-22 01:53:46,991 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:53:46" (1/1) ... [2022-11-22 01:53:46,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:53:46" (1/1) ... [2022-11-22 01:53:46,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:53:46,994 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:53:46,994 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:53:46,994 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:53:46,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:53:46" (1/1) ... [2022-11-22 01:53:47,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:53:47,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:53:47,033 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:53:47,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:53:47,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:53:47,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:53:47,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:53:47,077 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2022-11-22 01:53:47,077 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2022-11-22 01:53:47,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:53:47,152 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:53:47,154 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:53:47,349 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:53:47,383 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:53:47,384 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-22 01:53:47,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:53:47 BoogieIcfgContainer [2022-11-22 01:53:47,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:53:47,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:53:47,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:53:47,413 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:53:47,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:53:46" (1/3) ... [2022-11-22 01:53:47,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f7fb193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:53:47, skipping insertion in model container [2022-11-22 01:53:47,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:53:46" (2/3) ... [2022-11-22 01:53:47,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f7fb193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:53:47, skipping insertion in model container [2022-11-22 01:53:47,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:53:47" (3/3) ... [2022-11-22 01:53:47,416 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_20x0-1.c [2022-11-22 01:53:47,436 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:53:47,436 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-22 01:53:47,484 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:53:47,491 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7ca316a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:53:47,491 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-22 01:53:47,496 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 22 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 01:53:47,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 01:53:47,504 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:53:47,504 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 01:53:47,505 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 01:53:47,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:53:47,519 INFO L85 PathProgramCache]: Analyzing trace with hash 70444888, now seen corresponding path program 1 times [2022-11-22 01:53:47,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:53:47,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176260545] [2022-11-22 01:53:47,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:53:47,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:53:47,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:53:47,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:53:47,912 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:53:47,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176260545] [2022-11-22 01:53:47,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176260545] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:53:47,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:53:47,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:53:47,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818674927] [2022-11-22 01:53:47,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:53:47,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 01:53:47,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:53:47,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 01:53:47,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:53:47,954 INFO L87 Difference]: Start difference. First operand has 26 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 22 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 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) [2022-11-22 01:53:48,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:53:48,108 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2022-11-22 01:53:48,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:53:48,110 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 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 [2022-11-22 01:53:48,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:53:48,119 INFO L225 Difference]: With dead ends: 46 [2022-11-22 01:53:48,119 INFO L226 Difference]: Without dead ends: 42 [2022-11-22 01:53:48,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:53:48,126 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 33 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:53:48,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 62 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:53:48,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-22 01:53:48,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2022-11-22 01:53:48,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 24 states have (on average 1.5) internal successors, (36), 31 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-22 01:53:48,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2022-11-22 01:53:48,163 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 5 [2022-11-22 01:53:48,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:53:48,164 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2022-11-22 01:53:48,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 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) [2022-11-22 01:53:48,165 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2022-11-22 01:53:48,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 01:53:48,165 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:53:48,165 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 01:53:48,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:53:48,166 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting sumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 01:53:48,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:53:48,167 INFO L85 PathProgramCache]: Analyzing trace with hash 70445048, now seen corresponding path program 1 times [2022-11-22 01:53:48,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:53:48,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790564716] [2022-11-22 01:53:48,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:53:48,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:53:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:53:48,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:53:48,232 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:53:48,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790564716] [2022-11-22 01:53:48,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790564716] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:53:48,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:53:48,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:53:48,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622565375] [2022-11-22 01:53:48,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:53:48,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:53:48,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:53:48,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:53:48,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:53:48,275 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. 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) [2022-11-22 01:53:48,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:53:48,383 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2022-11-22 01:53:48,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:53:48,384 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 [2022-11-22 01:53:48,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:53:48,385 INFO L225 Difference]: With dead ends: 37 [2022-11-22 01:53:48,385 INFO L226 Difference]: Without dead ends: 36 [2022-11-22 01:53:48,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:53:48,387 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 34 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:53:48,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 17 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:53:48,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-22 01:53:48,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-11-22 01:53:48,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 30 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-22 01:53:48,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2022-11-22 01:53:48,396 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 5 [2022-11-22 01:53:48,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:53:48,396 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2022-11-22 01:53:48,397 INFO L496 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) [2022-11-22 01:53:48,397 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2022-11-22 01:53:48,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 01:53:48,398 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:53:48,398 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-22 01:53:48,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:53:48,398 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting sumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 01:53:48,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:53:48,399 INFO L85 PathProgramCache]: Analyzing trace with hash -2111175712, now seen corresponding path program 1 times [2022-11-22 01:53:48,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:53:48,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173246069] [2022-11-22 01:53:48,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:53:48,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:53:48,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:53:48,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:53:48,456 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:53:48,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173246069] [2022-11-22 01:53:48,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173246069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:53:48,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:53:48,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:53:48,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798506745] [2022-11-22 01:53:48,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:53:48,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:53:48,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:53:48,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:53:48,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:53:48,459 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 5 states, 4 states have (on average 1.25) 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) [2022-11-22 01:53:48,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:53:48,514 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2022-11-22 01:53:48,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:53:48,515 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) 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 [2022-11-22 01:53:48,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:53:48,516 INFO L225 Difference]: With dead ends: 45 [2022-11-22 01:53:48,516 INFO L226 Difference]: Without dead ends: 34 [2022-11-22 01:53:48,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:53:48,518 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 19 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:53:48,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 58 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:53:48,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-22 01:53:48,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-22 01:53:48,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 28 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-22 01:53:48,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2022-11-22 01:53:48,527 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 6 [2022-11-22 01:53:48,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:53:48,527 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2022-11-22 01:53:48,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) 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) [2022-11-22 01:53:48,528 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2022-11-22 01:53:48,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-22 01:53:48,528 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:53:48,529 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:53:48,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:53:48,529 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 01:53:48,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:53:48,530 INFO L85 PathProgramCache]: Analyzing trace with hash 457251635, now seen corresponding path program 1 times [2022-11-22 01:53:48,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:53:48,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924137148] [2022-11-22 01:53:48,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:53:48,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:53:48,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:53:48,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:53:48,681 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:53:48,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924137148] [2022-11-22 01:53:48,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924137148] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:53:48,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632020977] [2022-11-22 01:53:48,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:53:48,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:53:48,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:53:48,687 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:53:48,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 01:53:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:53:48,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 01:53:48,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:53:48,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:53:48,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:53:49,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:53:49,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632020977] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:53:49,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1196805524] [2022-11-22 01:53:49,021 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-22 01:53:49,022 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:53:49,026 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:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) 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) [2022-11-22 01:53:49,028 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:53:49,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2022-11-22 01:53:49,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462892659] [2022-11-22 01:53:49,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:53:49,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-22 01:53:49,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:53:49,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-22 01:53:49,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-11-22 01:53:49,032 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand has 18 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 11 states have internal predecessors, (29), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:53:49,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:53:49,418 INFO L93 Difference]: Finished difference Result 86 states and 96 transitions. [2022-11-22 01:53:49,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-22 01:53:49,419 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 11 states have internal predecessors, (29), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-22 01:53:49,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:53:49,420 INFO L225 Difference]: With dead ends: 86 [2022-11-22 01:53:49,420 INFO L226 Difference]: Without dead ends: 68 [2022-11-22 01:53:49,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2022-11-22 01:53:49,423 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 152 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:53:49,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 178 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:53:49,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-22 01:53:49,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 61. [2022-11-22 01:53:49,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 49 states have internal predecessors, (55), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-22 01:53:49,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2022-11-22 01:53:49,436 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 12 [2022-11-22 01:53:49,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:53:49,436 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2022-11-22 01:53:49,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 11 states have internal predecessors, (29), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:53:49,437 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2022-11-22 01:53:49,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-22 01:53:49,438 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:53:49,438 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-22 01:53:49,449 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-22 01:53:49,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:53:49,644 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting sumErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 01:53:49,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:53:49,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1647977428, now seen corresponding path program 1 times [2022-11-22 01:53:49,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:53:49,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822981423] [2022-11-22 01:53:49,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:53:49,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:53:49,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:53:49,846 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:53:49,847 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:53:49,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822981423] [2022-11-22 01:53:49,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822981423] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:53:49,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214882256] [2022-11-22 01:53:49,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:53:49,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:53:49,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:53:49,853 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:53:49,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 01:53:49,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:53:49,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 01:53:49,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:53:49,973 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:53:49,973 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:53:49,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214882256] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:53:49,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:53:49,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-11-22 01:53:49,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135370906] [2022-11-22 01:53:49,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:53:49,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 01:53:49,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:53:49,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 01:53:49,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-22 01:53:49,976 INFO L87 Difference]: Start difference. First operand 61 states and 67 transitions. Second operand has 7 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:53:50,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:53:50,058 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2022-11-22 01:53:50,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 01:53:50,059 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-22 01:53:50,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:53:50,075 INFO L225 Difference]: With dead ends: 61 [2022-11-22 01:53:50,075 INFO L226 Difference]: Without dead ends: 60 [2022-11-22 01:53:50,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-22 01:53:50,077 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 51 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:53:50,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 34 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:53:50,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-11-22 01:53:50,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-11-22 01:53:50,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 45 states have (on average 1.1333333333333333) internal successors, (51), 48 states have internal predecessors, (51), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-22 01:53:50,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2022-11-22 01:53:50,086 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 15 [2022-11-22 01:53:50,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:53:50,086 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2022-11-22 01:53:50,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:53:50,087 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2022-11-22 01:53:50,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 01:53:50,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:53:50,087 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1] [2022-11-22 01:53:50,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-22 01:53:50,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:53:50,293 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting sumErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 01:53:50,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:53:50,294 INFO L85 PathProgramCache]: Analyzing trace with hash -461869766, now seen corresponding path program 1 times [2022-11-22 01:53:50,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:53:50,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999280535] [2022-11-22 01:53:50,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:53:50,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:53:50,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:53:50,455 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:53:50,455 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:53:50,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999280535] [2022-11-22 01:53:50,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999280535] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:53:50,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380810179] [2022-11-22 01:53:50,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:53:50,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:53:50,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:53:50,458 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:53:50,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 01:53:50,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:53:50,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-22 01:53:50,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:53:50,624 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:53:50,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:53:50,766 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:53:50,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380810179] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:53:50,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1065302451] [2022-11-22 01:53:50,769 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 01:53:50,769 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:53:50,770 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:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) 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) [2022-11-22 01:53:50,770 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:53:50,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-11-22 01:53:50,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146221318] [2022-11-22 01:53:50,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:53:50,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-22 01:53:50,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:53:50,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-22 01:53:50,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2022-11-22 01:53:50,773 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand has 19 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 11 states have internal predecessors, (43), 8 states have call successors, (8), 7 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:53:51,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:53:51,015 INFO L93 Difference]: Finished difference Result 91 states and 98 transitions. [2022-11-22 01:53:51,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-22 01:53:51,015 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 11 states have internal predecessors, (43), 8 states have call successors, (8), 7 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 01:53:51,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:53:51,021 INFO L225 Difference]: With dead ends: 91 [2022-11-22 01:53:51,021 INFO L226 Difference]: Without dead ends: 90 [2022-11-22 01:53:51,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2022-11-22 01:53:51,026 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 160 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:53:51,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 132 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:53:51,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-11-22 01:53:51,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 84. [2022-11-22 01:53:51,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 65 states have (on average 1.1538461538461537) internal successors, (75), 68 states have internal predecessors, (75), 8 states have call successors, (8), 7 states have call predecessors, (8), 7 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-22 01:53:51,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 91 transitions. [2022-11-22 01:53:51,042 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 91 transitions. Word has length 21 [2022-11-22 01:53:51,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:53:51,047 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 91 transitions. [2022-11-22 01:53:51,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 11 states have internal predecessors, (43), 8 states have call successors, (8), 7 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:53:51,049 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 91 transitions. [2022-11-22 01:53:51,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-22 01:53:51,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:53:51,051 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2022-11-22 01:53:51,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 01:53:51,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:53:51,257 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 01:53:51,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:53:51,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1011345768, now seen corresponding path program 2 times [2022-11-22 01:53:51,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:53:51,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880511981] [2022-11-22 01:53:51,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:53:51,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:53:51,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:53:51,525 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:53:51,525 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:53:51,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880511981] [2022-11-22 01:53:51,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880511981] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:53:51,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817895365] [2022-11-22 01:53:51,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:53:51,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:53:51,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:53:51,527 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:53:51,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 01:53:51,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-22 01:53:51,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:53:51,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 01:53:51,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:53:51,658 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-22 01:53:51,659 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:53:51,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817895365] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:53:51,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:53:51,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 17 [2022-11-22 01:53:51,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453357039] [2022-11-22 01:53:51,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:53:51,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 01:53:51,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:53:51,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 01:53:51,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-11-22 01:53:51,665 INFO L87 Difference]: Start difference. First operand 84 states and 91 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:53:51,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:53:51,764 INFO L93 Difference]: Finished difference Result 90 states and 98 transitions. [2022-11-22 01:53:51,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 01:53:51,765 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-11-22 01:53:51,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:53:51,767 INFO L225 Difference]: With dead ends: 90 [2022-11-22 01:53:51,767 INFO L226 Difference]: Without dead ends: 89 [2022-11-22 01:53:51,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2022-11-22 01:53:51,770 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 28 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:53:51,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 52 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:53:51,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-11-22 01:53:51,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 83. [2022-11-22 01:53:51,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 65 states have (on average 1.1076923076923078) internal successors, (72), 67 states have internal predecessors, (72), 8 states have call successors, (8), 7 states have call predecessors, (8), 7 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-22 01:53:51,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 88 transitions. [2022-11-22 01:53:51,808 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 88 transitions. Word has length 33 [2022-11-22 01:53:51,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:53:51,808 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 88 transitions. [2022-11-22 01:53:51,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:53:51,809 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 88 transitions. [2022-11-22 01:53:51,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-22 01:53:51,810 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:53:51,810 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2022-11-22 01:53:51,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 01:53:52,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-22 01:53:52,025 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting sumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 01:53:52,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:53:52,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1286947680, now seen corresponding path program 1 times [2022-11-22 01:53:52,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:53:52,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693605772] [2022-11-22 01:53:52,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:53:52,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:53:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:53:52,280 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:53:52,280 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:53:52,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693605772] [2022-11-22 01:53:52,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693605772] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:53:52,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601051930] [2022-11-22 01:53:52,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:53:52,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:53:52,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:53:52,282 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:53:52,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 01:53:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:53:52,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-22 01:53:52,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:53:52,459 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:53:52,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:53:52,680 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:53:52,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601051930] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:53:52,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [624162959] [2022-11-22 01:53:52,683 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-22 01:53:52,683 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:53:52,683 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:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) 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) [2022-11-22 01:53:52,684 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:53:52,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2022-11-22 01:53:52,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599113616] [2022-11-22 01:53:52,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:53:52,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-22 01:53:52,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:53:52,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-22 01:53:52,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2022-11-22 01:53:52,688 INFO L87 Difference]: Start difference. First operand 83 states and 88 transitions. Second operand has 24 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 13 states have internal predecessors, (56), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:53:53,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:53:53,041 INFO L93 Difference]: Finished difference Result 156 states and 168 transitions. [2022-11-22 01:53:53,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-22 01:53:53,042 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 13 states have internal predecessors, (56), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-11-22 01:53:53,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:53:53,043 INFO L225 Difference]: With dead ends: 156 [2022-11-22 01:53:53,043 INFO L226 Difference]: Without dead ends: 125 [2022-11-22 01:53:53,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=311, Invalid=811, Unknown=0, NotChecked=0, Total=1122 [2022-11-22 01:53:53,046 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 219 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:53:53,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 256 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:53:53,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-11-22 01:53:53,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 119. [2022-11-22 01:53:53,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 93 states have (on average 1.075268817204301) internal successors, (100), 95 states have internal predecessors, (100), 12 states have call successors, (12), 11 states have call predecessors, (12), 11 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-22 01:53:53,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 124 transitions. [2022-11-22 01:53:53,070 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 124 transitions. Word has length 34 [2022-11-22 01:53:53,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:53:53,071 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 124 transitions. [2022-11-22 01:53:53,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 13 states have internal predecessors, (56), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:53:53,071 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 124 transitions. [2022-11-22 01:53:53,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-22 01:53:53,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:53:53,072 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 1, 1, 1] [2022-11-22 01:53:53,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-22 01:53:53,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-22 01:53:53,278 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting sumErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 01:53:53,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:53:53,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1412897914, now seen corresponding path program 2 times [2022-11-22 01:53:53,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:53:53,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984205803] [2022-11-22 01:53:53,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:53:53,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:53:53,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:53:53,544 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:53:53,545 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:53:53,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984205803] [2022-11-22 01:53:53,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984205803] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:53:53,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004010007] [2022-11-22 01:53:53,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:53:53,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:53:53,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:53:53,547 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:53:53,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-22 01:53:53,618 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-22 01:53:53,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:53:53,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-22 01:53:53,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:53:53,747 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:53:53,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:53:54,100 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:53:54,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004010007] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:53:54,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [41008602] [2022-11-22 01:53:54,102 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 01:53:54,102 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:53:54,103 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:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) 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) [2022-11-22 01:53:54,103 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:53:54,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-11-22 01:53:54,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908412358] [2022-11-22 01:53:54,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:53:54,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-22 01:53:54,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:53:54,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-22 01:53:54,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=910, Unknown=0, NotChecked=0, Total=1190 [2022-11-22 01:53:54,106 INFO L87 Difference]: Start difference. First operand 119 states and 124 transitions. Second operand has 35 states, 31 states have (on average 2.935483870967742) internal successors, (91), 19 states have internal predecessors, (91), 16 states have call successors, (16), 15 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:53:54,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:53:54,629 INFO L93 Difference]: Finished difference Result 174 states and 187 transitions. [2022-11-22 01:53:54,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-22 01:53:54,630 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 31 states have (on average 2.935483870967742) internal successors, (91), 19 states have internal predecessors, (91), 16 states have call successors, (16), 15 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2022-11-22 01:53:54,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:53:54,631 INFO L225 Difference]: With dead ends: 174 [2022-11-22 01:53:54,631 INFO L226 Difference]: Without dead ends: 173 [2022-11-22 01:53:54,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=611, Invalid=1741, Unknown=0, NotChecked=0, Total=2352 [2022-11-22 01:53:54,633 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 411 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:53:54,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 296 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:53:54,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-11-22 01:53:54,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 167. [2022-11-22 01:53:54,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 133 states have (on average 1.0827067669172932) internal successors, (144), 135 states have internal predecessors, (144), 16 states have call successors, (16), 15 states have call predecessors, (16), 15 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-22 01:53:54,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 176 transitions. [2022-11-22 01:53:54,651 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 176 transitions. Word has length 49 [2022-11-22 01:53:54,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:53:54,651 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 176 transitions. [2022-11-22 01:53:54,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 31 states have (on average 2.935483870967742) internal successors, (91), 19 states have internal predecessors, (91), 16 states have call successors, (16), 15 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:53:54,652 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 176 transitions. [2022-11-22 01:53:54,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-22 01:53:54,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:53:54,654 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1] [2022-11-22 01:53:54,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-22 01:53:54,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:53:54,860 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting sumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 01:53:54,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:53:54,861 INFO L85 PathProgramCache]: Analyzing trace with hash -2106284608, now seen corresponding path program 2 times [2022-11-22 01:53:54,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:53:54,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716184487] [2022-11-22 01:53:54,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:53:54,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:53:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:53:55,408 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:53:55,408 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:53:55,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716184487] [2022-11-22 01:53:55,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716184487] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:53:55,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357908270] [2022-11-22 01:53:55,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:53:55,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:53:55,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:53:55,410 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:53:55,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-22 01:53:55,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-22 01:53:55,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:53:55,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-22 01:53:55,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:53:55,600 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2022-11-22 01:53:55,600 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:53:55,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357908270] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:53:55,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:53:55,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [24] total 29 [2022-11-22 01:53:55,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521554040] [2022-11-22 01:53:55,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:53:55,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 01:53:55,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:53:55,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 01:53:55,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=635, Unknown=0, NotChecked=0, Total=812 [2022-11-22 01:53:55,605 INFO L87 Difference]: Start difference. First operand 167 states and 176 transitions. Second operand has 6 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:53:55,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:53:55,720 INFO L93 Difference]: Finished difference Result 177 states and 187 transitions. [2022-11-22 01:53:55,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 01:53:55,720 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-11-22 01:53:55,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:53:55,722 INFO L225 Difference]: With dead ends: 177 [2022-11-22 01:53:55,722 INFO L226 Difference]: Without dead ends: 176 [2022-11-22 01:53:55,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=188, Invalid=742, Unknown=0, NotChecked=0, Total=930 [2022-11-22 01:53:55,724 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 30 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:53:55,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 37 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:53:55,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-11-22 01:53:55,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 166. [2022-11-22 01:53:55,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 133 states have (on average 1.0451127819548873) internal successors, (139), 134 states have internal predecessors, (139), 16 states have call successors, (16), 15 states have call predecessors, (16), 15 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-22 01:53:55,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 171 transitions. [2022-11-22 01:53:55,740 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 171 transitions. Word has length 76 [2022-11-22 01:53:55,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:53:55,740 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 171 transitions. [2022-11-22 01:53:55,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:53:55,741 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 171 transitions. [2022-11-22 01:53:55,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-22 01:53:55,742 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:53:55,742 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 1, 1, 1] [2022-11-22 01:53:55,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-22 01:53:55,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-22 01:53:55,949 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting sumErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 01:53:55,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:53:55,949 INFO L85 PathProgramCache]: Analyzing trace with hash -2130027782, now seen corresponding path program 3 times [2022-11-22 01:53:55,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:53:55,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054649733] [2022-11-22 01:53:55,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:53:55,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:53:55,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:53:56,852 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 0 proven. 707 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:53:56,853 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:53:56,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054649733] [2022-11-22 01:53:56,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054649733] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:53:56,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729639189] [2022-11-22 01:53:56,853 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 01:53:56,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:53:56,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:53:56,855 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:53:56,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-22 01:53:56,940 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 01:53:56,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:53:56,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-22 01:53:56,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:53:57,180 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 0 proven. 707 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:53:57,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:53:58,360 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 0 proven. 707 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:53:58,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729639189] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:53:58,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1721007972] [2022-11-22 01:53:58,363 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 01:53:58,363 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:53:58,363 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:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) 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) [2022-11-22 01:53:58,364 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:53:58,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 65 [2022-11-22 01:53:58,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405125634] [2022-11-22 01:53:58,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:53:58,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-11-22 01:53:58,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:53:58,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-11-22 01:53:58,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1064, Invalid=3358, Unknown=0, NotChecked=0, Total=4422 [2022-11-22 01:53:58,370 INFO L87 Difference]: Start difference. First operand 166 states and 171 transitions. Second operand has 67 states, 63 states have (on average 2.9682539682539684) internal successors, (187), 35 states have internal predecessors, (187), 32 states have call successors, (32), 31 states have call predecessors, (32), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:53:59,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:53:59,847 INFO L93 Difference]: Finished difference Result 361 states and 398 transitions. [2022-11-22 01:53:59,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-11-22 01:53:59,847 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 63 states have (on average 2.9682539682539684) internal successors, (187), 35 states have internal predecessors, (187), 32 states have call successors, (32), 31 states have call predecessors, (32), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2022-11-22 01:53:59,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:53:59,851 INFO L225 Difference]: With dead ends: 361 [2022-11-22 01:53:59,855 INFO L226 Difference]: Without dead ends: 360 [2022-11-22 01:53:59,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2062 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2491, Invalid=6821, Unknown=0, NotChecked=0, Total=9312 [2022-11-22 01:53:59,860 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 1249 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1251 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 01:53:59,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1251 Valid, 547 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 710 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 01:53:59,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-11-22 01:53:59,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 358. [2022-11-22 01:53:59,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 293 states have (on average 1.075085324232082) internal successors, (315), 294 states have internal predecessors, (315), 32 states have call successors, (32), 31 states have call predecessors, (32), 31 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-11-22 01:53:59,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 379 transitions. [2022-11-22 01:53:59,888 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 379 transitions. Word has length 105 [2022-11-22 01:53:59,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:53:59,889 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 379 transitions. [2022-11-22 01:53:59,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 63 states have (on average 2.9682539682539684) internal successors, (187), 35 states have internal predecessors, (187), 32 states have call successors, (32), 31 states have call predecessors, (32), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:53:59,890 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 379 transitions. [2022-11-22 01:53:59,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-22 01:53:59,896 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:53:59,896 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:53:59,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-22 01:54:00,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:54:00,102 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 01:54:00,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:54:00,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1822221276, now seen corresponding path program 1 times [2022-11-22 01:54:00,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:54:00,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891103514] [2022-11-22 01:54:00,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:54:00,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:54:00,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:54:00,184 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2022-11-22 01:54:00,185 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:54:00,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891103514] [2022-11-22 01:54:00,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891103514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:54:00,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:54:00,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:54:00,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970552999] [2022-11-22 01:54:00,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:54:00,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:54:00,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:54:00,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:54:00,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:54:00,188 INFO L87 Difference]: Start difference. First operand 358 states and 379 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 01:54:00,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:54:00,214 INFO L93 Difference]: Finished difference Result 358 states and 379 transitions. [2022-11-22 01:54:00,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:54:00,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 110 [2022-11-22 01:54:00,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:54:00,216 INFO L225 Difference]: With dead ends: 358 [2022-11-22 01:54:00,216 INFO L226 Difference]: Without dead ends: 220 [2022-11-22 01:54:00,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:54:00,220 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:54:00,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:54:00,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-11-22 01:54:00,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 218. [2022-11-22 01:54:00,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 186 states have (on average 1.0053763440860215) internal successors, (187), 186 states have internal predecessors, (187), 31 states have call successors, (31), 31 states have call predecessors, (31), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:54:00,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 218 transitions. [2022-11-22 01:54:00,243 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 218 transitions. Word has length 110 [2022-11-22 01:54:00,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:54:00,244 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 218 transitions. [2022-11-22 01:54:00,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 01:54:00,244 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 218 transitions. [2022-11-22 01:54:00,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-11-22 01:54:00,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:54:00,251 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 30, 30, 30, 1, 1, 1] [2022-11-22 01:54:00,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-22 01:54:00,252 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting sumErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 01:54:00,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:54:00,253 INFO L85 PathProgramCache]: Analyzing trace with hash -825731078, now seen corresponding path program 4 times [2022-11-22 01:54:00,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:54:00,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054132868] [2022-11-22 01:54:00,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:54:00,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:54:00,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:54:01,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3195 backedges. 2850 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2022-11-22 01:54:01,950 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:54:01,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054132868] [2022-11-22 01:54:01,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054132868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:54:01,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:54:01,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2022-11-22 01:54:01,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693735211] [2022-11-22 01:54:01,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:54:01,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-22 01:54:01,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:54:01,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-22 01:54:01,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=507, Invalid=1473, Unknown=0, NotChecked=0, Total=1980 [2022-11-22 01:54:01,953 INFO L87 Difference]: Start difference. First operand 218 states and 218 transitions. Second operand has 45 states, 44 states have (on average 2.9545454545454546) internal successors, (130), 23 states have internal predecessors, (130), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:54:02,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:54:02,669 INFO L93 Difference]: Finished difference Result 218 states and 218 transitions. [2022-11-22 01:54:02,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-22 01:54:02,670 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 2.9545454545454546) internal successors, (130), 23 states have internal predecessors, (130), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 217 [2022-11-22 01:54:02,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:54:02,670 INFO L225 Difference]: With dead ends: 218 [2022-11-22 01:54:02,670 INFO L226 Difference]: Without dead ends: 0 [2022-11-22 01:54:02,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1221, Invalid=3069, Unknown=0, NotChecked=0, Total=4290 [2022-11-22 01:54:02,673 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 121 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:54:02,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 323 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 01:54:02,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-22 01:54:02,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-22 01:54:02,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:54:02,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-22 01:54:02,674 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 217 [2022-11-22 01:54:02,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:54:02,675 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-22 01:54:02,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 2.9545454545454546) internal successors, (130), 23 states have internal predecessors, (130), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:54:02,675 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-22 01:54:02,675 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-22 01:54:02,678 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 8 remaining) [2022-11-22 01:54:02,679 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 8 remaining) [2022-11-22 01:54:02,679 INFO L805 garLoopResultBuilder]: Registering result SAFE for location sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 8 remaining) [2022-11-22 01:54:02,679 INFO L805 garLoopResultBuilder]: Registering result SAFE for location sumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 8 remaining) [2022-11-22 01:54:02,679 INFO L805 garLoopResultBuilder]: Registering result SAFE for location sumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 8 remaining) [2022-11-22 01:54:02,680 INFO L805 garLoopResultBuilder]: Registering result SAFE for location sumErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 8 remaining) [2022-11-22 01:54:02,680 INFO L805 garLoopResultBuilder]: Registering result SAFE for location sumErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 8 remaining) [2022-11-22 01:54:02,680 INFO L805 garLoopResultBuilder]: Registering result SAFE for location sumErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 8 remaining) [2022-11-22 01:54:02,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-22 01:54:02,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-22 01:54:04,011 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2022-11-22 01:54:04,011 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-22 01:54:04,011 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2022-11-22 01:54:04,011 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-22 01:54:04,011 INFO L899 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2022-11-22 01:54:04,012 INFO L895 garLoopResultBuilder]: At program point L16(line 16) the Hoare annotation is: (and (<= 20 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~b~0#1| 0) (<= |ULTIMATE.start_main_~a~0#1| 20)) [2022-11-22 01:54:04,012 INFO L899 garLoopResultBuilder]: For program point L17-1(line 17) no Hoare annotation was computed. [2022-11-22 01:54:04,012 INFO L899 garLoopResultBuilder]: For program point L16-1(line 16) no Hoare annotation was computed. [2022-11-22 01:54:04,012 INFO L899 garLoopResultBuilder]: For program point sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 7) no Hoare annotation was computed. [2022-11-22 01:54:04,013 INFO L899 garLoopResultBuilder]: For program point sumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 7) no Hoare annotation was computed. [2022-11-22 01:54:04,013 INFO L899 garLoopResultBuilder]: For program point sumEXIT(lines 5 11) no Hoare annotation was computed. [2022-11-22 01:54:04,013 INFO L899 garLoopResultBuilder]: For program point sumErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 9) no Hoare annotation was computed. [2022-11-22 01:54:04,013 INFO L899 garLoopResultBuilder]: For program point sumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 9) no Hoare annotation was computed. [2022-11-22 01:54:04,013 INFO L899 garLoopResultBuilder]: For program point sumErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 9) no Hoare annotation was computed. [2022-11-22 01:54:04,013 INFO L899 garLoopResultBuilder]: For program point sumErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 9) no Hoare annotation was computed. [2022-11-22 01:54:04,014 INFO L902 garLoopResultBuilder]: At program point sumENTRY(lines 5 11) the Hoare annotation is: true [2022-11-22 01:54:04,014 INFO L899 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2022-11-22 01:54:04,014 INFO L899 garLoopResultBuilder]: For program point L9-1(line 9) no Hoare annotation was computed. [2022-11-22 01:54:04,014 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2022-11-22 01:54:04,014 INFO L899 garLoopResultBuilder]: For program point L9-2(line 9) no Hoare annotation was computed. [2022-11-22 01:54:04,014 INFO L899 garLoopResultBuilder]: For program point L6(lines 6 10) no Hoare annotation was computed. [2022-11-22 01:54:04,015 INFO L899 garLoopResultBuilder]: For program point L7-1(line 7) no Hoare annotation was computed. [2022-11-22 01:54:04,015 INFO L899 garLoopResultBuilder]: For program point L9-3(line 9) no Hoare annotation was computed. [2022-11-22 01:54:04,016 INFO L895 garLoopResultBuilder]: At program point L9-4(line 9) the Hoare annotation is: (let ((.cse1 (<= 1 sum_~m)) (.cse2 (< 0 sum_~n)) (.cse0 (not (<= 1 |sum_#in~m|))) (.cse3 (not (<= 0 |sum_#in~n|)))) (and (or .cse0 (not (<= |sum_#in~m| 1)) (not (<= |sum_#in~n| 19)) (not (<= 19 |sum_#in~n|)) (and (<= 19 sum_~n) (<= sum_~n 19) .cse1 (<= sum_~m 1))) (or .cse0 (not (<= |sum_#in~m| 3)) (not (<= |sum_#in~n| 17)) (and (<= sum_~m 3) .cse1 (<= 17 sum_~n) (<= sum_~n 17)) (not (<= 17 |sum_#in~n|))) (or .cse0 (not (<= |sum_#in~n| 5)) (and (<= sum_~n 5) .cse1 .cse2 (< sum_~m 2147483633)) .cse3 (not (< |sum_#in~m| 2147483633))) (or (and (<= 20 sum_~n) (<= sum_~n 20) (= sum_~m 0)) (not (<= |sum_#in~n| 20)) (not (= |sum_#in~m| 0)) (not (<= 20 |sum_#in~n|))) (or .cse0 (not (<= |sum_#in~m| 10)) (not (<= |sum_#in~n| 10)) .cse3 (and .cse1 (<= sum_~n 10) .cse2 (<= sum_~m 10))) (or .cse0 (not (<= |sum_#in~n| 6)) (and (<= sum_~m 14) .cse1 .cse2 (<= sum_~n 6)) .cse3 (not (<= |sum_#in~m| 14))) (or .cse0 (not (<= |sum_#in~n| 18)) (not (<= 18 |sum_#in~n|)) (and (<= sum_~m 2) (<= sum_~n 18) .cse1 (<= 18 sum_~n)) (not (<= |sum_#in~m| 2))) (or .cse0 (and (<= sum_~n 8) .cse1 .cse2 (<= sum_~m 12)) .cse3 (not (<= |sum_#in~m| 12)) (not (<= |sum_#in~n| 8))) (or .cse0 (not (<= |sum_#in~n| 3)) (not (< |sum_#in~m| 2147483635)) (and (<= sum_~n 3) .cse1 (< sum_~m 2147483635) .cse2) .cse3) (or .cse0 (not (<= |sum_#in~m| 5)) (not (< 4 |sum_#in~n|)) (not (<= |sum_#in~n| 15)) (and (< 4 sum_~n) (<= sum_~n 15) .cse1 (<= sum_~m 5))) (or .cse0 (not (<= |sum_#in~m| 4)) (not (<= 16 |sum_#in~n|)) (not (<= |sum_#in~n| 16)) (and (<= sum_~n 16) (<= sum_~m 4) .cse1 (<= 16 sum_~n))) (or .cse0 (and .cse1 .cse2 (<= sum_~m 13) (<= sum_~n 7)) .cse3 (not (<= |sum_#in~n| 7)) (not (<= |sum_#in~m| 13))) (or .cse0 (not (<= |sum_#in~n| 12)) (not (< 1 |sum_#in~n|)) (not (<= |sum_#in~m| 8)) (and .cse1 (<= sum_~n 12) (<= sum_~m 8) (< 1 sum_~n))) (or .cse0 (and (<= sum_~n 1) .cse1 .cse2 (< sum_~m 2147483637)) (not (< |sum_#in~m| 2147483637)) .cse3 (not (<= |sum_#in~n| 1))) (or .cse0 (not (< |sum_#in~m| 2147483634)) (not (<= |sum_#in~n| 4)) (and (<= sum_~n 4) .cse1 .cse2 (< sum_~m 2147483634)) .cse3) (or .cse0 (not (< |sum_#in~m| 2147483636)) (not (<= |sum_#in~n| 2)) .cse3 (and (<= sum_~n 2) .cse1 .cse2 (< sum_~m 2147483636))) (or .cse0 (not (<= |sum_#in~n| 14)) (not (<= |sum_#in~m| 6)) (and (< 3 sum_~n) .cse1 (<= sum_~n 14) (<= sum_~m 6)) (not (< 3 |sum_#in~n|))) (or .cse0 (not (<= |sum_#in~m| 11)) .cse3 (and (<= sum_~n 9) .cse1 (<= sum_~m 11) .cse2) (not (<= |sum_#in~n| 9))) (or .cse0 (not (<= |sum_#in~m| 7)) (not (< 2 |sum_#in~n|)) (not (<= |sum_#in~n| 13)) (and (< 2 sum_~n) (<= sum_~n 13) .cse1 (<= sum_~m 7))) (or .cse0 (not (<= |sum_#in~n| 11)) (not (<= |sum_#in~m| 9)) (and .cse1 (<= sum_~m 9) .cse2 (<= sum_~n 11)) .cse3) (or .cse0 (not (< |sum_#in~m| 2147483638)) (not (<= |sum_#in~n| 0)) .cse3))) [2022-11-22 01:54:04,016 INFO L899 garLoopResultBuilder]: For program point L9-5(line 9) no Hoare annotation was computed. [2022-11-22 01:54:04,017 INFO L899 garLoopResultBuilder]: For program point sumFINAL(lines 5 11) no Hoare annotation was computed. [2022-11-22 01:54:04,020 INFO L444 BasicCegarLoop]: Path program histogram: [4, 2, 2, 1, 1, 1, 1, 1] [2022-11-22 01:54:04,022 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 01:54:04,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:54:04 BoogieIcfgContainer [2022-11-22 01:54:04,026 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 01:54:04,027 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 01:54:04,027 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 01:54:04,027 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 01:54:04,028 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:53:47" (3/4) ... [2022-11-22 01:54:04,031 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-22 01:54:04,037 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure sum [2022-11-22 01:54:04,041 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-11-22 01:54:04,042 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-11-22 01:54:04,042 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-22 01:54:04,042 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-22 01:54:04,072 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/witness.graphml [2022-11-22 01:54:04,073 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 01:54:04,073 INFO L158 Benchmark]: Toolchain (without parser) took 17377.84ms. Allocated memory was 144.7MB in the beginning and 251.7MB in the end (delta: 107.0MB). Free memory was 114.8MB in the beginning and 205.8MB in the end (delta: -91.0MB). Peak memory consumption was 18.5MB. Max. memory is 16.1GB. [2022-11-22 01:54:04,074 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 144.7MB. Free memory is still 120.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 01:54:04,074 INFO L158 Benchmark]: CACSL2BoogieTranslator took 215.34ms. Allocated memory is still 144.7MB. Free memory was 114.8MB in the beginning and 104.8MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-22 01:54:04,074 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.72ms. Allocated memory is still 144.7MB. Free memory was 104.8MB in the beginning and 103.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 01:54:04,075 INFO L158 Benchmark]: Boogie Preprocessor took 42.82ms. Allocated memory is still 144.7MB. Free memory was 103.8MB in the beginning and 102.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 01:54:04,075 INFO L158 Benchmark]: RCFGBuilder took 413.73ms. Allocated memory is still 144.7MB. Free memory was 102.7MB in the beginning and 91.2MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-22 01:54:04,076 INFO L158 Benchmark]: TraceAbstraction took 16616.70ms. Allocated memory was 144.7MB in the beginning and 251.7MB in the end (delta: 107.0MB). Free memory was 90.6MB in the beginning and 207.8MB in the end (delta: -117.2MB). Peak memory consumption was 123.4MB. Max. memory is 16.1GB. [2022-11-22 01:54:04,076 INFO L158 Benchmark]: Witness Printer took 46.01ms. Allocated memory is still 251.7MB. Free memory was 207.8MB in the beginning and 205.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 01:54:04,078 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 144.7MB. Free memory is still 120.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 215.34ms. Allocated memory is still 144.7MB. Free memory was 114.8MB in the beginning and 104.8MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.72ms. Allocated memory is still 144.7MB. Free memory was 104.8MB in the beginning and 103.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 42.82ms. Allocated memory is still 144.7MB. Free memory was 103.8MB in the beginning and 102.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 413.73ms. Allocated memory is still 144.7MB. Free memory was 102.7MB in the beginning and 91.2MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 16616.70ms. Allocated memory was 144.7MB in the beginning and 251.7MB in the end (delta: 107.0MB). Free memory was 90.6MB in the beginning and 207.8MB in the end (delta: -117.2MB). Peak memory consumption was 123.4MB. Max. memory is 16.1GB. * Witness Printer took 46.01ms. Allocated memory is still 251.7MB. Free memory was 207.8MB in the beginning and 205.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 7]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 7]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 9]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 9]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 9]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 9]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 26 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 16.6s, OverallIterations: 13, TraceHistogramMax: 31, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2523 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2507 mSDsluCounter, 2023 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1724 mSDsCounter, 428 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2757 IncrementalHoareTripleChecker+Invalid, 3185 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 428 mSolverCounterUnsat, 299 mSDtfsCounter, 2757 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 828 GetRequests, 468 SyntacticMatches, 0 SemanticMatches, 360 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3968 ImplicationChecksByTransitivity, 5.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=358occurred in iteration=11, InterpolantAutomatonStates: 237, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 50 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 63 PreInvPairs, 63 NumberOfFragments, 622 HoareAnnotationTreeSize, 63 FomulaSimplifications, 858 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 1596 FormulaSimplificationTreeSizeReductionInter, 1.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 7.6s InterpolantComputationTime, 1033 NumberOfCodeBlocks, 949 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 1228 ConstructedInterpolants, 0 QuantifiedInterpolants, 3177 SizeOfPredicates, 37 NumberOfNonLiveVariables, 789 ConjunctsInSsa, 92 ConjunctsInUnsatCore, 26 InterpolantComputations, 8 PerfectInterpolantSequences, 4076/7200 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-22 01:54:04,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ec36ac-55d8-4a30-b785-ac9bf072e2d9/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE