./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark19_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216e02aa-3b3a-4e54-a36b-5b2b9ce8a9d3/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216e02aa-3b3a-4e54-a36b-5b2b9ce8a9d3/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216e02aa-3b3a-4e54-a36b-5b2b9ce8a9d3/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216e02aa-3b3a-4e54-a36b-5b2b9ce8a9d3/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark19_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216e02aa-3b3a-4e54-a36b-5b2b9ce8a9d3/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216e02aa-3b3a-4e54-a36b-5b2b9ce8a9d3/bin/utaipan-Q6hlc19bkW --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 2dd3364bf5e5337e36d5137f60eb9fb66edcf0c750f78ddc701b6a530fbd02a5 --- 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-4e7fbc6 [2022-11-23 15:13:50,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:13:50,868 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:13:50,901 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:13:50,905 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:13:50,906 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:13:50,908 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:13:50,912 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:13:50,915 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:13:50,916 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:13:50,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:13:50,921 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:13:50,922 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:13:50,928 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:13:50,929 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:13:50,930 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:13:50,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:13:50,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:13:50,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:13:50,933 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:13:50,934 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:13:50,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:13:50,940 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:13:50,941 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:13:50,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:13:50,953 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:13:50,953 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:13:50,954 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:13:50,954 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:13:50,955 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:13:50,956 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:13:50,958 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:13:50,959 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:13:50,960 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:13:50,961 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:13:50,962 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:13:50,963 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:13:50,963 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:13:50,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:13:50,965 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:13:50,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:13:50,968 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216e02aa-3b3a-4e54-a36b-5b2b9ce8a9d3/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-23 15:13:50,997 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:13:50,997 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:13:50,998 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:13:50,998 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:13:50,999 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:13:50,999 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:13:50,999 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:13:50,999 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:13:51,000 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:13:51,000 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:13:51,001 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:13:51,001 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:13:51,001 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:13:51,001 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:13:51,002 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:13:51,002 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:13:51,002 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:13:51,002 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:13:51,003 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:13:51,003 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:13:51,003 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 15:13:51,004 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:13:51,004 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:13:51,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:13:51,004 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:13:51,005 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:13:51,005 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:13:51,005 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 15:13:51,006 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:13:51,006 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:13:51,006 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:13:51,007 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:13:51,007 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:13:51,008 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:13:51,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:13:51,008 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:13:51,009 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:13:51,009 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:13:51,009 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:13:51,009 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:13:51,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:13:51,010 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:13:51,010 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:13:51,010 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_216e02aa-3b3a-4e54-a36b-5b2b9ce8a9d3/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216e02aa-3b3a-4e54-a36b-5b2b9ce8a9d3/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2dd3364bf5e5337e36d5137f60eb9fb66edcf0c750f78ddc701b6a530fbd02a5 [2022-11-23 15:13:51,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:13:51,341 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:13:51,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:13:51,344 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:13:51,344 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:13:51,345 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216e02aa-3b3a-4e54-a36b-5b2b9ce8a9d3/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/loop-zilu/benchmark19_conjunctive.i [2022-11-23 15:13:54,414 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:13:54,714 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:13:54,715 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216e02aa-3b3a-4e54-a36b-5b2b9ce8a9d3/sv-benchmarks/c/loop-zilu/benchmark19_conjunctive.i [2022-11-23 15:13:54,723 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216e02aa-3b3a-4e54-a36b-5b2b9ce8a9d3/bin/utaipan-Q6hlc19bkW/data/bf7794390/e7a4d91554924f44b2edadd1e70c9f9e/FLAG9653aac9f [2022-11-23 15:13:54,749 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216e02aa-3b3a-4e54-a36b-5b2b9ce8a9d3/bin/utaipan-Q6hlc19bkW/data/bf7794390/e7a4d91554924f44b2edadd1e70c9f9e [2022-11-23 15:13:54,756 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:13:54,758 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:13:54,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:13:54,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:13:54,763 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:13:54,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:13:54" (1/1) ... [2022-11-23 15:13:54,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@362594ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:54, skipping insertion in model container [2022-11-23 15:13:54,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:13:54" (1/1) ... [2022-11-23 15:13:54,774 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:13:54,797 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:13:54,998 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_216e02aa-3b3a-4e54-a36b-5b2b9ce8a9d3/sv-benchmarks/c/loop-zilu/benchmark19_conjunctive.i[873,886] [2022-11-23 15:13:55,013 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:13:55,026 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:13:55,041 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_216e02aa-3b3a-4e54-a36b-5b2b9ce8a9d3/sv-benchmarks/c/loop-zilu/benchmark19_conjunctive.i[873,886] [2022-11-23 15:13:55,047 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:13:55,061 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:13:55,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:55 WrapperNode [2022-11-23 15:13:55,062 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:13:55,063 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:13:55,063 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:13:55,063 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:13:55,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:55" (1/1) ... [2022-11-23 15:13:55,078 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:55" (1/1) ... [2022-11-23 15:13:55,098 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 41 [2022-11-23 15:13:55,099 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:13:55,099 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:13:55,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:13:55,100 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:13:55,111 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:55" (1/1) ... [2022-11-23 15:13:55,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:55" (1/1) ... [2022-11-23 15:13:55,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:55" (1/1) ... [2022-11-23 15:13:55,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:55" (1/1) ... [2022-11-23 15:13:55,128 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:55" (1/1) ... [2022-11-23 15:13:55,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:55" (1/1) ... [2022-11-23 15:13:55,137 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:55" (1/1) ... [2022-11-23 15:13:55,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:55" (1/1) ... [2022-11-23 15:13:55,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:13:55,142 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:13:55,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:13:55,142 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:13:55,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:55" (1/1) ... [2022-11-23 15:13:55,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:13:55,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216e02aa-3b3a-4e54-a36b-5b2b9ce8a9d3/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:13:55,179 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216e02aa-3b3a-4e54-a36b-5b2b9ce8a9d3/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:13:55,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216e02aa-3b3a-4e54-a36b-5b2b9ce8a9d3/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:13:55,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:13:55,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:13:55,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:13:55,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:13:55,303 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:13:55,305 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:13:55,491 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:13:55,515 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:13:55,515 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 15:13:55,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:13:55 BoogieIcfgContainer [2022-11-23 15:13:55,518 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:13:55,520 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:13:55,520 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:13:55,523 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:13:55,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:13:54" (1/3) ... [2022-11-23 15:13:55,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a5d624d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:13:55, skipping insertion in model container [2022-11-23 15:13:55,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:55" (2/3) ... [2022-11-23 15:13:55,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a5d624d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:13:55, skipping insertion in model container [2022-11-23 15:13:55,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:13:55" (3/3) ... [2022-11-23 15:13:55,526 INFO L112 eAbstractionObserver]: Analyzing ICFG benchmark19_conjunctive.i [2022-11-23 15:13:55,545 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:13:55,546 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-23 15:13:55,593 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:13:55,600 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;@6727858b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:13:55,600 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-23 15:13:55,604 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 8 states have (on average 1.75) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:13:55,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-23 15:13:55,611 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:13:55,611 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-23 15:13:55,612 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 15:13:55,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:13:55,617 INFO L85 PathProgramCache]: Analyzing trace with hash 2092610, now seen corresponding path program 1 times [2022-11-23 15:13:55,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:13:55,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864684827] [2022-11-23 15:13:55,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:13:55,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:13:55,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:13:55,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:13:55,831 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:13:55,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864684827] [2022-11-23 15:13:55,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864684827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:13:55,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:13:55,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:13:55,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026782852] [2022-11-23 15:13:55,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:13:55,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:13:55,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:13:55,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:13:55,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:13:55,894 INFO L87 Difference]: Start difference. First operand has 13 states, 8 states have (on average 1.75) internal successors, (14), 12 states have internal predecessors, (14), 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) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:13:55,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:13:55,937 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2022-11-23 15:13:55,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:13:55,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) Word has length 4 [2022-11-23 15:13:55,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:13:55,947 INFO L225 Difference]: With dead ends: 13 [2022-11-23 15:13:55,948 INFO L226 Difference]: Without dead ends: 10 [2022-11-23 15:13:55,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:13:55,954 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:13:55,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 13 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:13:55,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-11-23 15:13:55,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-11-23 15:13:55,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:13:55,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2022-11-23 15:13:55,987 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 4 [2022-11-23 15:13:55,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:13:55,987 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2022-11-23 15:13:55,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:13:55,988 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2022-11-23 15:13:55,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 15:13:55,988 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:13:55,988 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 15:13:55,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:13:55,989 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 15:13:55,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:13:55,990 INFO L85 PathProgramCache]: Analyzing trace with hash 64870960, now seen corresponding path program 1 times [2022-11-23 15:13:55,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:13:55,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751612633] [2022-11-23 15:13:55,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:13:55,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:13:56,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:13:56,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:13:56,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:13:56,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751612633] [2022-11-23 15:13:56,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751612633] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:13:56,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:13:56,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:13:56,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743683041] [2022-11-23 15:13:56,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:13:56,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:13:56,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:13:56,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:13:56,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:13:56,121 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:13:56,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:13:56,159 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2022-11-23 15:13:56,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:13:56,161 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) Word has length 5 [2022-11-23 15:13:56,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:13:56,162 INFO L225 Difference]: With dead ends: 10 [2022-11-23 15:13:56,162 INFO L226 Difference]: Without dead ends: 9 [2022-11-23 15:13:56,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:13:56,164 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:13:56,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 8 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:13:56,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-11-23 15:13:56,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-11-23 15:13:56,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:13:56,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-23 15:13:56,173 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-23 15:13:56,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:13:56,186 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-23 15:13:56,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:13:56,186 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-23 15:13:56,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 15:13:56,186 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:13:56,187 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 15:13:56,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:13:56,187 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 15:13:56,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:13:56,188 INFO L85 PathProgramCache]: Analyzing trace with hash 2010999812, now seen corresponding path program 1 times [2022-11-23 15:13:56,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:13:56,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914901716] [2022-11-23 15:13:56,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:13:56,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:13:56,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:13:56,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:13:56,275 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:13:56,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914901716] [2022-11-23 15:13:56,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914901716] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:13:56,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:13:56,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:13:56,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888892616] [2022-11-23 15:13:56,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:13:56,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:13:56,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:13:56,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:13:56,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:13:56,278 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:13:56,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:13:56,308 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-23 15:13:56,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:13:56,309 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) Word has length 6 [2022-11-23 15:13:56,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:13:56,310 INFO L225 Difference]: With dead ends: 16 [2022-11-23 15:13:56,310 INFO L226 Difference]: Without dead ends: 15 [2022-11-23 15:13:56,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:13:56,312 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 5 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:13:56,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 12 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:13:56,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-23 15:13:56,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2022-11-23 15:13:56,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:13:56,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-11-23 15:13:56,318 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 6 [2022-11-23 15:13:56,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:13:56,318 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-11-23 15:13:56,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:13:56,319 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-11-23 15:13:56,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-23 15:13:56,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:13:56,320 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:13:56,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:13:56,320 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 15:13:56,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:13:56,321 INFO L85 PathProgramCache]: Analyzing trace with hash -2083515214, now seen corresponding path program 1 times [2022-11-23 15:13:56,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:13:56,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957666435] [2022-11-23 15:13:56,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:13:56,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:13:56,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:13:56,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:13:56,385 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:13:56,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957666435] [2022-11-23 15:13:56,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957666435] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:13:56,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:13:56,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:13:56,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254244492] [2022-11-23 15:13:56,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:13:56,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:13:56,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:13:56,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:13:56,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:13:56,390 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:13:56,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:13:56,427 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2022-11-23 15:13:56,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:13:56,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) Word has length 7 [2022-11-23 15:13:56,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:13:56,429 INFO L225 Difference]: With dead ends: 13 [2022-11-23 15:13:56,429 INFO L226 Difference]: Without dead ends: 12 [2022-11-23 15:13:56,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:13:56,435 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 4 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:13:56,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 4 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:13:56,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-11-23 15:13:56,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-11-23 15:13:56,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:13:56,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-23 15:13:56,442 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 7 [2022-11-23 15:13:56,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:13:56,443 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-23 15:13:56,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:13:56,443 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-23 15:13:56,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 15:13:56,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:13:56,444 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2022-11-23 15:13:56,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:13:56,444 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 15:13:56,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:13:56,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1065881398, now seen corresponding path program 1 times [2022-11-23 15:13:56,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:13:56,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883876581] [2022-11-23 15:13:56,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:13:56,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:13:56,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:13:56,552 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:13:56,553 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:13:56,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883876581] [2022-11-23 15:13:56,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883876581] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:13:56,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577435] [2022-11-23 15:13:56,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:13:56,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:13:56,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216e02aa-3b3a-4e54-a36b-5b2b9ce8a9d3/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:13:56,558 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216e02aa-3b3a-4e54-a36b-5b2b9ce8a9d3/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:13:56,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216e02aa-3b3a-4e54-a36b-5b2b9ce8a9d3/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:13:56,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:13:56,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 15:13:56,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:13:56,756 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 15:13:56,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:13:56,907 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:13:56,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577435] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:13:56,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [872145398] [2022-11-23 15:13:56,926 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-23 15:13:56,926 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:13:56,930 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:13:56,936 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:13:56,937 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:13:57,437 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:13:58,119 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '221#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~j~0#1| 1)) (not (<= 0 (+ 2147483647 |ULTIMATE.start_main_#t~post5#1|))) (= |ULTIMATE.start_main_#t~post5#1| |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483646) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 15:13:58,119 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:13:58,120 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:13:58,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 7] total 14 [2022-11-23 15:13:58,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673361558] [2022-11-23 15:13:58,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:13:58,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-23 15:13:58,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:13:58,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-23 15:13:58,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2022-11-23 15:13:58,127 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 15 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:13:58,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:13:58,243 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2022-11-23 15:13:58,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:13:58,243 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 15 states have internal predecessors, (29), 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) Word has length 11 [2022-11-23 15:13:58,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:13:58,243 INFO L225 Difference]: With dead ends: 12 [2022-11-23 15:13:58,244 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 15:13:58,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=113, Invalid=537, Unknown=0, NotChecked=0, Total=650 [2022-11-23 15:13:58,245 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 13 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:13:58,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 4 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:13:58,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 15:13:58,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 15:13:58,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:13:58,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 15:13:58,246 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2022-11-23 15:13:58,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:13:58,247 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 15:13:58,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:13:58,247 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 15:13:58,247 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 15:13:58,253 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-11-23 15:13:58,254 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-11-23 15:13:58,255 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2022-11-23 15:13:58,255 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2022-11-23 15:13:58,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216e02aa-3b3a-4e54-a36b-5b2b9ce8a9d3/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 15:13:58,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216e02aa-3b3a-4e54-a36b-5b2b9ce8a9d3/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:13:58,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-23 15:13:58,492 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-11-23 15:13:58,492 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-23 15:13:58,492 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-11-23 15:13:58,492 INFO L899 garLoopResultBuilder]: For program point L25(line 25) no Hoare annotation was computed. [2022-11-23 15:13:58,492 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2022-11-23 15:13:58,493 INFO L899 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2022-11-23 15:13:58,493 INFO L899 garLoopResultBuilder]: For program point L25-2(line 25) no Hoare annotation was computed. [2022-11-23 15:13:58,493 INFO L899 garLoopResultBuilder]: For program point L25-3(line 25) no Hoare annotation was computed. [2022-11-23 15:13:58,493 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-11-23 15:13:58,493 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-11-23 15:13:58,493 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-23 15:13:58,494 INFO L902 garLoopResultBuilder]: At program point L28(lines 19 29) the Hoare annotation is: true [2022-11-23 15:13:58,494 INFO L895 garLoopResultBuilder]: At program point L24-2(lines 24 26) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|)) [2022-11-23 15:13:58,497 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-23 15:13:58,499 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:13:58,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:13:58 BoogieIcfgContainer [2022-11-23 15:13:58,512 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:13:58,514 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:13:58,514 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:13:58,514 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:13:58,515 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:13:55" (3/4) ... [2022-11-23 15:13:58,518 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 15:13:58,528 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-23 15:13:58,528 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-23 15:13:58,529 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-23 15:13:58,529 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 15:13:58,567 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216e02aa-3b3a-4e54-a36b-5b2b9ce8a9d3/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 15:13:58,568 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:13:58,568 INFO L158 Benchmark]: Toolchain (without parser) took 3810.68ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 100.7MB in the beginning and 118.1MB in the end (delta: -17.4MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. [2022-11-23 15:13:58,569 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 104.9MB. Free memory is still 56.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:13:58,569 INFO L158 Benchmark]: CACSL2BoogieTranslator took 302.97ms. Allocated memory is still 132.1MB. Free memory was 100.7MB in the beginning and 90.9MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 15:13:58,570 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.78ms. Allocated memory is still 132.1MB. Free memory was 90.9MB in the beginning and 88.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:13:58,570 INFO L158 Benchmark]: Boogie Preprocessor took 41.27ms. Allocated memory is still 132.1MB. Free memory was 88.8MB in the beginning and 88.2MB in the end (delta: 565.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:13:58,570 INFO L158 Benchmark]: RCFGBuilder took 376.03ms. Allocated memory is still 132.1MB. Free memory was 88.2MB in the beginning and 76.8MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 15:13:58,571 INFO L158 Benchmark]: TraceAbstraction took 2992.49ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 76.2MB in the beginning and 121.2MB in the end (delta: -45.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:13:58,572 INFO L158 Benchmark]: Witness Printer took 54.11ms. Allocated memory is still 159.4MB. Free memory was 121.2MB in the beginning and 118.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 15:13:58,575 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 104.9MB. Free memory is still 56.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 302.97ms. Allocated memory is still 132.1MB. Free memory was 100.7MB in the beginning and 90.9MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.78ms. Allocated memory is still 132.1MB. Free memory was 90.9MB in the beginning and 88.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.27ms. Allocated memory is still 132.1MB. Free memory was 88.8MB in the beginning and 88.2MB in the end (delta: 565.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 376.03ms. Allocated memory is still 132.1MB. Free memory was 88.2MB in the beginning and 76.8MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2992.49ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 76.2MB in the beginning and 121.2MB in the end (delta: -45.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 54.11ms. Allocated memory is still 159.4MB. Free memory was 121.2MB in the beginning and 118.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. 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: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: 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 1 procedures, 13 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 2.9s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 30 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 30 mSDsluCounter, 41 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 73 IncrementalHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 18 mSDtfsCounter, 73 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 3 NumberOfFragments, 11 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 17 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 181 SizeOfPredicates, 8 NumberOfNonLiveVariables, 57 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 1/12 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 4 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: (0 <= k && k <= 2147483647) && j <= k - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-23 15:13:58,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_216e02aa-3b3a-4e54-a36b-5b2b9ce8a9d3/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE