./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/sum_2x3-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/sum_2x3-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh --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 1d9b45804bf1a403fd87b7e9f0e2fc3ea97d36c9de0ccb522dbdc14d8252502f --- 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-2329fc7 [2022-12-14 13:26:06,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 13:26:06,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 13:26:06,763 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 13:26:06,764 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 13:26:06,765 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 13:26:06,766 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 13:26:06,768 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 13:26:06,769 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 13:26:06,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 13:26:06,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 13:26:06,772 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 13:26:06,772 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 13:26:06,773 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 13:26:06,774 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 13:26:06,775 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 13:26:06,776 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 13:26:06,777 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 13:26:06,778 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 13:26:06,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 13:26:06,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 13:26:06,782 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 13:26:06,783 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 13:26:06,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 13:26:06,786 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 13:26:06,786 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 13:26:06,787 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 13:26:06,787 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 13:26:06,788 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 13:26:06,789 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 13:26:06,789 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 13:26:06,789 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 13:26:06,790 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 13:26:06,791 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 13:26:06,792 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 13:26:06,792 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 13:26:06,792 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 13:26:06,792 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 13:26:06,793 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 13:26:06,793 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 13:26:06,794 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 13:26:06,794 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 13:26:06,813 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 13:26:06,814 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 13:26:06,814 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 13:26:06,814 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 13:26:06,815 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 13:26:06,815 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 13:26:06,815 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 13:26:06,815 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 13:26:06,815 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 13:26:06,815 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 13:26:06,815 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 13:26:06,816 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 13:26:06,816 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 13:26:06,816 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 13:26:06,816 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 13:26:06,816 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 13:26:06,816 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 13:26:06,817 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 13:26:06,817 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 13:26:06,817 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 13:26:06,817 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 13:26:06,817 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 13:26:06,817 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 13:26:06,817 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 13:26:06,818 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 13:26:06,818 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 13:26:06,818 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 13:26:06,818 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 13:26:06,818 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 13:26:06,818 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 13:26:06,818 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 13:26:06,818 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 13:26:06,819 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 13:26:06,819 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 13:26:06,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:26:06,819 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 13:26:06,819 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 13:26:06,819 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 13:26:06,820 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 13:26:06,820 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 13:26:06,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 13:26:06,820 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 13:26:06,820 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 13:26:06,820 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_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d9b45804bf1a403fd87b7e9f0e2fc3ea97d36c9de0ccb522dbdc14d8252502f [2022-12-14 13:26:07,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 13:26:07,028 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 13:26:07,030 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 13:26:07,032 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 13:26:07,032 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 13:26:07,033 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/recursive-simple/sum_2x3-2.c [2022-12-14 13:26:09,589 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 13:26:09,727 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 13:26:09,727 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/sv-benchmarks/c/recursive-simple/sum_2x3-2.c [2022-12-14 13:26:09,733 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/data/8101e74a6/d78d9bbe4a454729862523aaadb22bbd/FLAGc153c1ddc [2022-12-14 13:26:09,746 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/data/8101e74a6/d78d9bbe4a454729862523aaadb22bbd [2022-12-14 13:26:09,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 13:26:09,750 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 13:26:09,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 13:26:09,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 13:26:09,755 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 13:26:09,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:26:09" (1/1) ... [2022-12-14 13:26:09,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13b400ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:26:09, skipping insertion in model container [2022-12-14 13:26:09,757 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:26:09" (1/1) ... [2022-12-14 13:26:09,762 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 13:26:09,772 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 13:26:09,889 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_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/sv-benchmarks/c/recursive-simple/sum_2x3-2.c[479,492] [2022-12-14 13:26:09,890 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:26:09,899 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 13:26:09,910 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_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/sv-benchmarks/c/recursive-simple/sum_2x3-2.c[479,492] [2022-12-14 13:26:09,910 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:26:09,920 INFO L208 MainTranslator]: Completed translation [2022-12-14 13:26:09,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:26:09 WrapperNode [2022-12-14 13:26:09,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 13:26:09,921 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 13:26:09,921 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 13:26:09,921 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 13:26:09,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:26:09" (1/1) ... [2022-12-14 13:26:09,932 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:26:09" (1/1) ... [2022-12-14 13:26:09,943 INFO L138 Inliner]: procedures = 12, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2022-12-14 13:26:09,944 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 13:26:09,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 13:26:09,944 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 13:26:09,944 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 13:26:09,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:26:09" (1/1) ... [2022-12-14 13:26:09,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:26:09" (1/1) ... [2022-12-14 13:26:09,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:26:09" (1/1) ... [2022-12-14 13:26:09,952 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:26:09" (1/1) ... [2022-12-14 13:26:09,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:26:09" (1/1) ... [2022-12-14 13:26:09,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:26:09" (1/1) ... [2022-12-14 13:26:09,956 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:26:09" (1/1) ... [2022-12-14 13:26:09,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:26:09" (1/1) ... [2022-12-14 13:26:09,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 13:26:09,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 13:26:09,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 13:26:09,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 13:26:09,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:26:09" (1/1) ... [2022-12-14 13:26:09,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:26:09,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:26:09,983 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 13:26:09,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 13:26:10,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 13:26:10,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 13:26:10,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 13:26:10,019 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2022-12-14 13:26:10,019 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2022-12-14 13:26:10,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 13:26:10,073 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 13:26:10,074 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 13:26:10,155 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 13:26:10,171 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 13:26:10,171 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 13:26:10,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:26:10 BoogieIcfgContainer [2022-12-14 13:26:10,173 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 13:26:10,176 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 13:26:10,176 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 13:26:10,179 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 13:26:10,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:26:09" (1/3) ... [2022-12-14 13:26:10,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e2a879b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:26:10, skipping insertion in model container [2022-12-14 13:26:10,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:26:09" (2/3) ... [2022-12-14 13:26:10,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e2a879b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:26:10, skipping insertion in model container [2022-12-14 13:26:10,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:26:10" (3/3) ... [2022-12-14 13:26:10,182 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_2x3-2.c [2022-12-14 13:26:10,197 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 13:26:10,198 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-12-14 13:26:10,241 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 13:26:10,247 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;@5a7515e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 13:26:10,248 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-12-14 13:26:10,251 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) [2022-12-14 13:26:10,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 13:26:10,256 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:26:10,257 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 13:26:10,257 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 13:26:10,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:26:10,261 INFO L85 PathProgramCache]: Analyzing trace with hash 70444888, now seen corresponding path program 1 times [2022-12-14 13:26:10,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:26:10,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586271487] [2022-12-14 13:26:10,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:26:10,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:26:10,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:26:10,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:26:10,430 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:26:10,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586271487] [2022-12-14 13:26:10,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586271487] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:26:10,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:26:10,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 13:26:10,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802629838] [2022-12-14 13:26:10,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:26:10,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 13:26:10,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:26:10,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 13:26:10,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 13:26:10,475 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 5 states, 4 states have (on average 1.0) 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) [2022-12-14 13:26:10,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:26:10,565 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2022-12-14 13:26:10,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 13:26:10,567 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) 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 [2022-12-14 13:26:10,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:26:10,575 INFO L225 Difference]: With dead ends: 52 [2022-12-14 13:26:10,575 INFO L226 Difference]: Without dead ends: 37 [2022-12-14 13:26:10,578 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 [2022-12-14 13:26:10,581 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 24 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:26:10,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 61 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:26:10,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-12-14 13:26:10,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2022-12-14 13:26:10,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 29 states have internal predecessors, (32), 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) [2022-12-14 13:26:10,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2022-12-14 13:26:10,612 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 5 [2022-12-14 13:26:10,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:26:10,613 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2022-12-14 13:26:10,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) 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) [2022-12-14 13:26:10,613 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2022-12-14 13:26:10,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 13:26:10,613 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:26:10,614 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:26:10,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 13:26:10,614 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting sumErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 13:26:10,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:26:10,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1021783654, now seen corresponding path program 1 times [2022-12-14 13:26:10,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:26:10,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419439265] [2022-12-14 13:26:10,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:26:10,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:26:10,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:26:10,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:26:10,685 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:26:10,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419439265] [2022-12-14 13:26:10,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419439265] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:26:10,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:26:10,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:26:10,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880381370] [2022-12-14 13:26:10,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:26:10,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 13:26:10,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:26:10,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 13:26:10,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 13:26:10,690 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 5 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:26:10,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:26:10,747 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2022-12-14 13:26:10,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 13:26:10,747 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-14 13:26:10,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:26:10,748 INFO L225 Difference]: With dead ends: 37 [2022-12-14 13:26:10,748 INFO L226 Difference]: Without dead ends: 35 [2022-12-14 13:26:10,749 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 [2022-12-14 13:26:10,751 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 16 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:26:10,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 65 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:26:10,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-12-14 13:26:10,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-12-14 13:26:10,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 29 states have internal predecessors, (30), 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) [2022-12-14 13:26:10,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2022-12-14 13:26:10,759 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 7 [2022-12-14 13:26:10,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:26:10,760 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2022-12-14 13:26:10,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:26:10,760 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2022-12-14 13:26:10,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 13:26:10,761 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:26:10,761 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:26:10,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 13:26:10,761 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 13:26:10,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:26:10,762 INFO L85 PathProgramCache]: Analyzing trace with hash 457251635, now seen corresponding path program 1 times [2022-12-14 13:26:10,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:26:10,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107074192] [2022-12-14 13:26:10,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:26:10,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:26:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:26:10,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:26:10,865 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:26:10,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107074192] [2022-12-14 13:26:10,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107074192] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:26:10,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486525933] [2022-12-14 13:26:10,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:26:10,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:26:10,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:26:10,867 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:26:10,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 13:26:10,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:26:10,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 13:26:10,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:26:10,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:26:10,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:26:11,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:26:11,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486525933] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:26:11,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1018959145] [2022-12-14 13:26:11,037 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-12-14 13:26:11,037 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:26:11,041 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:337) 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) [2022-12-14 13:26:11,042 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:26:11,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2022-12-14 13:26:11,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189644933] [2022-12-14 13:26:11,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 13:26:11,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 13:26:11,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:26:11,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 13:26:11,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-12-14 13:26:11,045 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 10 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:26:11,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:26:11,126 INFO L93 Difference]: Finished difference Result 64 states and 67 transitions. [2022-12-14 13:26:11,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 13:26:11,127 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-14 13:26:11,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:26:11,129 INFO L225 Difference]: With dead ends: 64 [2022-12-14 13:26:11,129 INFO L226 Difference]: Without dead ends: 49 [2022-12-14 13:26:11,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 5 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-12-14 13:26:11,130 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 44 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:26:11,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 96 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:26:11,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-12-14 13:26:11,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 44. [2022-12-14 13:26:11,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 36 states have internal predecessors, (40), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 13:26:11,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2022-12-14 13:26:11,137 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 12 [2022-12-14 13:26:11,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:26:11,138 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2022-12-14 13:26:11,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:26:11,138 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2022-12-14 13:26:11,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 13:26:11,138 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:26:11,138 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:26:11,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 13:26:11,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:26:11,341 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting sumErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 13:26:11,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:26:11,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1289903818, now seen corresponding path program 1 times [2022-12-14 13:26:11,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:26:11,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556631795] [2022-12-14 13:26:11,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:26:11,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:26:11,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:26:11,512 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:26:11,512 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:26:11,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556631795] [2022-12-14 13:26:11,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556631795] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:26:11,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255935612] [2022-12-14 13:26:11,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:26:11,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:26:11,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:26:11,515 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:26:11,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 13:26:11,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:26:11,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 13:26:11,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:26:11,641 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:26:11,641 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:26:11,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255935612] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:26:11,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 13:26:11,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-12-14 13:26:11,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104924813] [2022-12-14 13:26:11,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:26:11,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 13:26:11,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:26:11,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 13:26:11,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-12-14 13:26:11,644 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-12-14 13:26:11,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:26:11,700 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2022-12-14 13:26:11,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 13:26:11,701 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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 13 [2022-12-14 13:26:11,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:26:11,702 INFO L225 Difference]: With dead ends: 44 [2022-12-14 13:26:11,702 INFO L226 Difference]: Without dead ends: 43 [2022-12-14 13:26:11,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-12-14 13:26:11,704 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 50 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:26:11,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 31 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:26:11,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-12-14 13:26:11,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-12-14 13:26:11,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 35 states have internal predecessors, (38), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 13:26:11,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2022-12-14 13:26:11,711 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 13 [2022-12-14 13:26:11,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:26:11,711 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2022-12-14 13:26:11,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-12-14 13:26:11,712 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2022-12-14 13:26:11,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 13:26:11,712 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:26:11,712 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-14 13:26:11,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 13:26:11,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:26:11,914 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting sumErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 13:26:11,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:26:11,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1332312757, now seen corresponding path program 1 times [2022-12-14 13:26:11,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:26:11,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961224787] [2022-12-14 13:26:11,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:26:11,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:26:11,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:26:12,034 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:26:12,034 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:26:12,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961224787] [2022-12-14 13:26:12,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961224787] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:26:12,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226561251] [2022-12-14 13:26:12,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:26:12,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:26:12,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:26:12,036 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:26:12,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 13:26:12,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:26:12,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 13:26:12,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:26:12,113 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:26:12,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:26:12,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226561251] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:26:12,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 13:26:12,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-12-14 13:26:12,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072329746] [2022-12-14 13:26:12,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:26:12,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 13:26:12,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:26:12,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 13:26:12,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-12-14 13:26:12,115 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-12-14 13:26:12,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:26:12,175 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2022-12-14 13:26:12,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 13:26:12,176 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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 14 [2022-12-14 13:26:12,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:26:12,177 INFO L225 Difference]: With dead ends: 43 [2022-12-14 13:26:12,177 INFO L226 Difference]: Without dead ends: 42 [2022-12-14 13:26:12,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-12-14 13:26:12,177 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 38 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:26:12,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 36 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:26:12,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-12-14 13:26:12,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-12-14 13:26:12,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 30 states have (on average 1.2) internal successors, (36), 34 states have internal predecessors, (36), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 13:26:12,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2022-12-14 13:26:12,182 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 14 [2022-12-14 13:26:12,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:26:12,182 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2022-12-14 13:26:12,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-12-14 13:26:12,182 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2022-12-14 13:26:12,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 13:26:12,183 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:26:12,183 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-12-14 13:26:12,188 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 13:26:12,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:26:12,385 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting sumErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 13:26:12,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:26:12,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1647977428, now seen corresponding path program 1 times [2022-12-14 13:26:12,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:26:12,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923436448] [2022-12-14 13:26:12,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:26:12,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:26:12,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:26:12,518 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:26:12,519 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:26:12,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923436448] [2022-12-14 13:26:12,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923436448] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:26:12,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705306544] [2022-12-14 13:26:12,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:26:12,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:26:12,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:26:12,520 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:26:12,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 13:26:12,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:26:12,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 13:26:12,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:26:12,587 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:26:12,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:26:12,636 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:26:12,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705306544] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:26:12,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [67626690] [2022-12-14 13:26:12,638 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-12-14 13:26:12,639 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:26:12,639 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:337) 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) [2022-12-14 13:26:12,640 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:26:12,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2022-12-14 13:26:12,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042888200] [2022-12-14 13:26:12,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 13:26:12,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 13:26:12,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:26:12,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 13:26:12,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-12-14 13:26:12,642 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand has 15 states, 11 states have (on average 3.0) internal successors, (33), 9 states have internal predecessors, (33), 6 states have call successors, (6), 5 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:26:12,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:26:12,769 INFO L93 Difference]: Finished difference Result 73 states and 79 transitions. [2022-12-14 13:26:12,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 13:26:12,770 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 3.0) internal successors, (33), 9 states have internal predecessors, (33), 6 states have call successors, (6), 5 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 15 [2022-12-14 13:26:12,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:26:12,771 INFO L225 Difference]: With dead ends: 73 [2022-12-14 13:26:12,771 INFO L226 Difference]: Without dead ends: 72 [2022-12-14 13:26:12,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2022-12-14 13:26:12,772 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 85 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:26:12,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 120 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:26:12,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-12-14 13:26:12,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 66. [2022-12-14 13:26:12,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 50 states have (on average 1.22) internal successors, (61), 54 states have internal predecessors, (61), 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) [2022-12-14 13:26:12,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2022-12-14 13:26:12,778 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 15 [2022-12-14 13:26:12,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:26:12,778 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2022-12-14 13:26:12,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 3.0) internal successors, (33), 9 states have internal predecessors, (33), 6 states have call successors, (6), 5 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:26:12,778 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2022-12-14 13:26:12,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 13:26:12,779 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:26:12,779 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-12-14 13:26:12,783 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 13:26:12,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:26:12,981 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 13:26:12,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:26:12,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1376054008, now seen corresponding path program 2 times [2022-12-14 13:26:12,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:26:12,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811871361] [2022-12-14 13:26:12,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:26:12,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:26:13,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:26:13,114 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:26:13,115 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:26:13,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811871361] [2022-12-14 13:26:13,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811871361] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:26:13,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279026958] [2022-12-14 13:26:13,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 13:26:13,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:26:13,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:26:13,116 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:26:13,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 13:26:13,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-14 13:26:13,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:26:13,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 13:26:13,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:26:13,207 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 13:26:13,208 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:26:13,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279026958] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:26:13,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 13:26:13,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 12 [2022-12-14 13:26:13,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155911396] [2022-12-14 13:26:13,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:26:13,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 13:26:13,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:26:13,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 13:26:13,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-12-14 13:26:13,210 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2022-12-14 13:26:13,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:26:13,280 INFO L93 Difference]: Finished difference Result 72 states and 80 transitions. [2022-12-14 13:26:13,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 13:26:13,281 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 19 [2022-12-14 13:26:13,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:26:13,282 INFO L225 Difference]: With dead ends: 72 [2022-12-14 13:26:13,282 INFO L226 Difference]: Without dead ends: 71 [2022-12-14 13:26:13,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-12-14 13:26:13,283 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 36 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:26:13,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 38 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:26:13,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-12-14 13:26:13,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65. [2022-12-14 13:26:13,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 50 states have (on average 1.16) internal successors, (58), 53 states have internal predecessors, (58), 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) [2022-12-14 13:26:13,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2022-12-14 13:26:13,293 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 19 [2022-12-14 13:26:13,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:26:13,293 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2022-12-14 13:26:13,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2022-12-14 13:26:13,293 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2022-12-14 13:26:13,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 13:26:13,294 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:26:13,294 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-12-14 13:26:13,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 13:26:13,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-14 13:26:13,495 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting sumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 13:26:13,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:26:13,496 INFO L85 PathProgramCache]: Analyzing trace with hash -291998656, now seen corresponding path program 1 times [2022-12-14 13:26:13,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:26:13,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408173050] [2022-12-14 13:26:13,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:26:13,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:26:13,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:26:13,643 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:26:13,643 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:26:13,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408173050] [2022-12-14 13:26:13,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408173050] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:26:13,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565173742] [2022-12-14 13:26:13,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:26:13,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:26:13,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:26:13,644 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:26:13,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 13:26:13,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:26:13,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 13:26:13,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:26:13,722 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:26:13,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:26:13,806 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:26:13,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565173742] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:26:13,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [447563305] [2022-12-14 13:26:13,808 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-12-14 13:26:13,808 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:26:13,808 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:337) 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) [2022-12-14 13:26:13,809 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:26:13,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2022-12-14 13:26:13,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579431333] [2022-12-14 13:26:13,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 13:26:13,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-14 13:26:13,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:26:13,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-14 13:26:13,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2022-12-14 13:26:13,811 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand has 22 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 14 states have internal predecessors, (44), 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) [2022-12-14 13:26:14,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:26:14,054 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2022-12-14 13:26:14,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-14 13:26:14,055 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 14 states have internal predecessors, (44), 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 20 [2022-12-14 13:26:14,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:26:14,056 INFO L225 Difference]: With dead ends: 86 [2022-12-14 13:26:14,056 INFO L226 Difference]: Without dead ends: 84 [2022-12-14 13:26:14,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=228, Invalid=828, Unknown=0, NotChecked=0, Total=1056 [2022-12-14 13:26:14,058 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 140 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:26:14,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 116 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:26:14,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-12-14 13:26:14,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 76. [2022-12-14 13:26:14,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 60 states have (on average 1.1) internal successors, (66), 62 states have internal predecessors, (66), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-14 13:26:14,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2022-12-14 13:26:14,066 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 20 [2022-12-14 13:26:14,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:26:14,066 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2022-12-14 13:26:14,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 14 states have internal predecessors, (44), 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) [2022-12-14 13:26:14,066 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2022-12-14 13:26:14,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-14 13:26:14,067 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:26:14,067 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:26:14,072 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 13:26:14,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:26:14,268 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 13:26:14,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:26:14,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1119294428, now seen corresponding path program 1 times [2022-12-14 13:26:14,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:26:14,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967276483] [2022-12-14 13:26:14,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:26:14,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:26:14,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:26:14,367 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 13:26:14,367 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:26:14,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967276483] [2022-12-14 13:26:14,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967276483] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:26:14,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:26:14,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 13:26:14,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281596358] [2022-12-14 13:26:14,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:26:14,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:26:14,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:26:14,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:26:14,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:26:14,373 INFO L87 Difference]: Start difference. First operand 76 states and 80 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) [2022-12-14 13:26:14,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:26:14,393 INFO L93 Difference]: Finished difference Result 76 states and 80 transitions. [2022-12-14 13:26:14,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:26:14,394 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 30 [2022-12-14 13:26:14,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:26:14,395 INFO L225 Difference]: With dead ends: 76 [2022-12-14 13:26:14,395 INFO L226 Difference]: Without dead ends: 45 [2022-12-14 13:26:14,396 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 [2022-12-14 13:26:14,396 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 1 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:26:14,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 31 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:26:14,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-12-14 13:26:14,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2022-12-14 13:26:14,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 37 states have (on average 1.027027027027027) internal successors, (38), 37 states have internal predecessors, (38), 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) [2022-12-14 13:26:14,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2022-12-14 13:26:14,404 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 30 [2022-12-14 13:26:14,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:26:14,404 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2022-12-14 13:26:14,404 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) [2022-12-14 13:26:14,404 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2022-12-14 13:26:14,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-12-14 13:26:14,405 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:26:14,405 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 1, 1, 1] [2022-12-14 13:26:14,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 13:26:14,405 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting sumErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 13:26:14,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:26:14,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1324811412, now seen corresponding path program 2 times [2022-12-14 13:26:14,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:26:14,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043373480] [2022-12-14 13:26:14,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:26:14,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:26:14,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:26:14,480 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 58 proven. 9 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-12-14 13:26:14,481 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:26:14,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043373480] [2022-12-14 13:26:14,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043373480] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:26:14,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805427959] [2022-12-14 13:26:14,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 13:26:14,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:26:14,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:26:14,482 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:26:14,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 13:26:14,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-14 13:26:14,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:26:14,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 13:26:14,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:26:14,621 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:26:14,621 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:26:14,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805427959] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:26:14,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 13:26:14,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [8] total 17 [2022-12-14 13:26:14,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704286714] [2022-12-14 13:26:14,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:26:14,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 13:26:14,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:26:14,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 13:26:14,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2022-12-14 13:26:14,624 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 8 states have internal predecessors, (37), 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) [2022-12-14 13:26:14,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:26:14,671 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2022-12-14 13:26:14,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 13:26:14,671 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 8 states have internal predecessors, (37), 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 43 [2022-12-14 13:26:14,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:26:14,672 INFO L225 Difference]: With dead ends: 44 [2022-12-14 13:26:14,672 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 13:26:14,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2022-12-14 13:26:14,673 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 13 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:26:14,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 27 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:26:14,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 13:26:14,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 13:26:14,674 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) [2022-12-14 13:26:14,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 13:26:14,674 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2022-12-14 13:26:14,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:26:14,674 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 13:26:14,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 8 states have internal predecessors, (37), 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) [2022-12-14 13:26:14,674 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 13:26:14,674 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 13:26:14,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 8 remaining) [2022-12-14 13:26:14,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 8 remaining) [2022-12-14 13:26:14,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 8 remaining) [2022-12-14 13:26:14,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location sumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 8 remaining) [2022-12-14 13:26:14,678 INFO L805 garLoopResultBuilder]: Registering result SAFE for location sumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 8 remaining) [2022-12-14 13:26:14,678 INFO L805 garLoopResultBuilder]: Registering result SAFE for location sumErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 8 remaining) [2022-12-14 13:26:14,678 INFO L805 garLoopResultBuilder]: Registering result SAFE for location sumErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 8 remaining) [2022-12-14 13:26:14,678 INFO L805 garLoopResultBuilder]: Registering result SAFE for location sumErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 8 remaining) [2022-12-14 13:26:14,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 13:26:14,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 13:26:14,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 13:26:14,952 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2022-12-14 13:26:14,952 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 13:26:14,952 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2022-12-14 13:26:14,952 INFO L899 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2022-12-14 13:26:14,952 INFO L895 garLoopResultBuilder]: At program point L16(line 16) the Hoare annotation is: (and (= 3 |ULTIMATE.start_main_~b~0#1|) (= 2 |ULTIMATE.start_main_~a~0#1|)) [2022-12-14 13:26:14,953 INFO L899 garLoopResultBuilder]: For program point L17-1(line 17) no Hoare annotation was computed. [2022-12-14 13:26:14,953 INFO L899 garLoopResultBuilder]: For program point L16-1(line 16) no Hoare annotation was computed. [2022-12-14 13:26:14,953 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 13:26:14,953 INFO L899 garLoopResultBuilder]: For program point sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 7) no Hoare annotation was computed. [2022-12-14 13:26:14,953 INFO L899 garLoopResultBuilder]: For program point sumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 7) no Hoare annotation was computed. [2022-12-14 13:26:14,953 INFO L899 garLoopResultBuilder]: For program point sumEXIT(lines 5 11) no Hoare annotation was computed. [2022-12-14 13:26:14,953 INFO L899 garLoopResultBuilder]: For program point sumErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 9) no Hoare annotation was computed. [2022-12-14 13:26:14,953 INFO L899 garLoopResultBuilder]: For program point sumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 9) no Hoare annotation was computed. [2022-12-14 13:26:14,953 INFO L899 garLoopResultBuilder]: For program point sumErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 9) no Hoare annotation was computed. [2022-12-14 13:26:14,953 INFO L899 garLoopResultBuilder]: For program point sumErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 9) no Hoare annotation was computed. [2022-12-14 13:26:14,953 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 5 11) the Hoare annotation is: true [2022-12-14 13:26:14,954 INFO L899 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2022-12-14 13:26:14,954 INFO L899 garLoopResultBuilder]: For program point L9-1(line 9) no Hoare annotation was computed. [2022-12-14 13:26:14,954 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2022-12-14 13:26:14,954 INFO L899 garLoopResultBuilder]: For program point L9-2(line 9) no Hoare annotation was computed. [2022-12-14 13:26:14,954 INFO L899 garLoopResultBuilder]: For program point L6(lines 6 10) no Hoare annotation was computed. [2022-12-14 13:26:14,954 INFO L899 garLoopResultBuilder]: For program point L7-1(line 7) no Hoare annotation was computed. [2022-12-14 13:26:14,954 INFO L899 garLoopResultBuilder]: For program point L9-3(line 9) no Hoare annotation was computed. [2022-12-14 13:26:14,954 INFO L895 garLoopResultBuilder]: At program point L9-4(line 9) the Hoare annotation is: (let ((.cse0 (not (<= 0 |sum_#in~n|))) (.cse1 (not (<= 4 |sum_#in~m|)))) (and (or (and (= sum_~m 3) (= sum_~n 2)) (not (= 2 |sum_#in~n|)) (not (= 3 |sum_#in~m|))) (or (not (<= |sum_#in~m| 4)) .cse0 .cse1 (and (<= sum_~m 4) (<= 4 sum_~m) (<= sum_~n 1) (<= 1 sum_~n)) (not (<= |sum_#in~n| 1))) (or (not (<= |sum_#in~n| 0)) (not (<= |sum_#in~m| 5)) .cse0 .cse1))) [2022-12-14 13:26:14,954 INFO L899 garLoopResultBuilder]: For program point L9-5(line 9) no Hoare annotation was computed. [2022-12-14 13:26:14,954 INFO L899 garLoopResultBuilder]: For program point sumFINAL(lines 5 11) no Hoare annotation was computed. [2022-12-14 13:26:14,958 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1] [2022-12-14 13:26:14,959 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 13:26:14,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 01:26:14 BoogieIcfgContainer [2022-12-14 13:26:14,961 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 13:26:14,962 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 13:26:14,962 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 13:26:14,962 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 13:26:14,962 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:26:10" (3/4) ... [2022-12-14 13:26:14,964 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 13:26:14,968 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure sum [2022-12-14 13:26:14,971 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-12-14 13:26:14,971 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-12-14 13:26:14,971 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-14 13:26:14,971 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 13:26:14,992 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 13:26:14,992 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 13:26:14,993 INFO L158 Benchmark]: Toolchain (without parser) took 5242.27ms. Allocated memory was 157.3MB in the beginning and 188.7MB in the end (delta: 31.5MB). Free memory was 115.4MB in the beginning and 102.0MB in the end (delta: 13.4MB). Peak memory consumption was 45.9MB. Max. memory is 16.1GB. [2022-12-14 13:26:14,993 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 100.7MB. Free memory was 46.8MB in the beginning and 46.6MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 13:26:14,993 INFO L158 Benchmark]: CACSL2BoogieTranslator took 168.81ms. Allocated memory is still 157.3MB. Free memory was 115.4MB in the beginning and 105.4MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 13:26:14,993 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.68ms. Allocated memory is still 157.3MB. Free memory was 105.4MB in the beginning and 104.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 13:26:14,993 INFO L158 Benchmark]: Boogie Preprocessor took 14.04ms. Allocated memory is still 157.3MB. Free memory was 104.3MB in the beginning and 103.3MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 13:26:14,994 INFO L158 Benchmark]: RCFGBuilder took 214.27ms. Allocated memory is still 157.3MB. Free memory was 103.3MB in the beginning and 92.3MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 13:26:14,994 INFO L158 Benchmark]: TraceAbstraction took 4785.43ms. Allocated memory was 157.3MB in the beginning and 188.7MB in the end (delta: 31.5MB). Free memory was 91.8MB in the beginning and 104.1MB in the end (delta: -12.3MB). Peak memory consumption was 20.7MB. Max. memory is 16.1GB. [2022-12-14 13:26:14,994 INFO L158 Benchmark]: Witness Printer took 30.58ms. Allocated memory is still 188.7MB. Free memory was 104.1MB in the beginning and 102.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 13:26:14,996 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 100.7MB. Free memory was 46.8MB in the beginning and 46.6MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 168.81ms. Allocated memory is still 157.3MB. Free memory was 115.4MB in the beginning and 105.4MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.68ms. Allocated memory is still 157.3MB. Free memory was 105.4MB in the beginning and 104.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 14.04ms. Allocated memory is still 157.3MB. Free memory was 104.3MB in the beginning and 103.3MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 214.27ms. Allocated memory is still 157.3MB. Free memory was 103.3MB in the beginning and 92.3MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 4785.43ms. Allocated memory was 157.3MB in the beginning and 188.7MB in the end (delta: 31.5MB). Free memory was 91.8MB in the beginning and 104.1MB in the end (delta: -12.3MB). Peak memory consumption was 20.7MB. Max. memory is 16.1GB. * Witness Printer took 30.58ms. Allocated memory is still 188.7MB. Free memory was 104.1MB in the beginning and 102.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 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: 4.7s, OverallIterations: 10, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 457 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 447 mSDsluCounter, 621 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 473 mSDsCounter, 86 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 843 IncrementalHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 86 mSolverCounterUnsat, 148 mSDtfsCounter, 843 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 258 GetRequests, 133 SyntacticMatches, 5 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=8, InterpolantAutomatonStates: 85, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 28 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 13 PreInvPairs, 13 NumberOfFragments, 72 HoareAnnotationTreeSize, 13 FomulaSimplifications, 69 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 158 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 314 NumberOfCodeBlocks, 307 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 341 ConstructedInterpolants, 0 QuantifiedInterpolants, 996 SizeOfPredicates, 20 NumberOfNonLiveVariables, 477 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 20 InterpolantComputations, 7 PerfectInterpolantSequences, 229/315 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! [2022-12-14 13:26:15,009 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdb7db8-b28a-4bcf-9e9d-5bcf299b379b/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE