./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/sum_15x0-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b 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_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/sum_15x0-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS --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 610248c6c4c4e7168ba971ed5fa38cec025658aa482465da336c99be91c3aa5c --- 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-8393723 [2022-11-19 06:50:37,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:50:37,683 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:50:37,709 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:50:37,709 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:50:37,710 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:50:37,712 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:50:37,714 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:50:37,716 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:50:37,717 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:50:37,718 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:50:37,719 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:50:37,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:50:37,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:50:37,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:50:37,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:50:37,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:50:37,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:50:37,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:50:37,729 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:50:37,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:50:37,740 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:50:37,742 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:50:37,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:50:37,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:50:37,757 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:50:37,758 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:50:37,759 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:50:37,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:50:37,760 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:50:37,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:50:37,763 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:50:37,764 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:50:37,765 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:50:37,767 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:50:37,768 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:50:37,769 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:50:37,769 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:50:37,769 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:50:37,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:50:37,771 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:50:37,772 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-19 06:50:37,805 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:50:37,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:50:37,806 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:50:37,806 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:50:37,807 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:50:37,807 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:50:37,807 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:50:37,808 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:50:37,808 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:50:37,808 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:50:37,808 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:50:37,809 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:50:37,809 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:50:37,809 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:50:37,809 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:50:37,810 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:50:37,810 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:50:37,810 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:50:37,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:50:37,811 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:50:37,811 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 06:50:37,812 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:50:37,812 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:50:37,812 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:50:37,812 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:50:37,812 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:50:37,813 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:50:37,813 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-19 06:50:37,813 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:50:37,813 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:50:37,814 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:50:37,814 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:50:37,814 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:50:37,814 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:50:37,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:50:37,815 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:50:37,815 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:50:37,815 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:50:37,816 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:50:37,816 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:50:37,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:50:37,816 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:50:37,816 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:50:37,817 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_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 610248c6c4c4e7168ba971ed5fa38cec025658aa482465da336c99be91c3aa5c [2022-11-19 06:50:38,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:50:38,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:50:38,099 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:50:38,100 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:50:38,101 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:50:38,102 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/recursive-simple/sum_15x0-2.c [2022-11-19 06:50:38,167 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/data/e5f2c106e/f6f5e74fac63443b99f35d26669935aa/FLAG02ced8ad1 [2022-11-19 06:50:38,695 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:50:38,695 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/sv-benchmarks/c/recursive-simple/sum_15x0-2.c [2022-11-19 06:50:38,702 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/data/e5f2c106e/f6f5e74fac63443b99f35d26669935aa/FLAG02ced8ad1 [2022-11-19 06:50:39,102 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/data/e5f2c106e/f6f5e74fac63443b99f35d26669935aa [2022-11-19 06:50:39,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:50:39,108 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:50:39,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:50:39,113 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:50:39,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:50:39,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:50:39" (1/1) ... [2022-11-19 06:50:39,120 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bb988d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:39, skipping insertion in model container [2022-11-19 06:50:39,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:50:39" (1/1) ... [2022-11-19 06:50:39,128 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:50:39,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:50:39,315 WARN L234 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_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/sv-benchmarks/c/recursive-simple/sum_15x0-2.c[481,494] [2022-11-19 06:50:39,316 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:50:39,325 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:50:39,338 WARN L234 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_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/sv-benchmarks/c/recursive-simple/sum_15x0-2.c[481,494] [2022-11-19 06:50:39,339 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:50:39,352 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:50:39,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:39 WrapperNode [2022-11-19 06:50:39,353 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:50:39,354 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:50:39,354 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:50:39,354 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:50:39,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:39" (1/1) ... [2022-11-19 06:50:39,371 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:39" (1/1) ... [2022-11-19 06:50:39,390 INFO L138 Inliner]: procedures = 12, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2022-11-19 06:50:39,390 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:50:39,392 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:50:39,392 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:50:39,392 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:50:39,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:39" (1/1) ... [2022-11-19 06:50:39,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:39" (1/1) ... [2022-11-19 06:50:39,417 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:39" (1/1) ... [2022-11-19 06:50:39,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:39" (1/1) ... [2022-11-19 06:50:39,422 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:39" (1/1) ... [2022-11-19 06:50:39,429 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:39" (1/1) ... [2022-11-19 06:50:39,430 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:39" (1/1) ... [2022-11-19 06:50:39,431 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:39" (1/1) ... [2022-11-19 06:50:39,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:50:39,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:50:39,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:50:39,436 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:50:39,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:39" (1/1) ... [2022-11-19 06:50:39,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:50:39,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:50:39,471 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:50:39,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:50:39,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:50:39,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:50:39,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:50:39,521 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2022-11-19 06:50:39,521 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2022-11-19 06:50:39,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:50:39,598 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:50:39,600 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:50:39,793 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:50:39,833 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:50:39,833 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 06:50:39,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:50:39 BoogieIcfgContainer [2022-11-19 06:50:39,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:50:39,841 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:50:39,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:50:39,845 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:50:39,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:50:39" (1/3) ... [2022-11-19 06:50:39,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63836ae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:50:39, skipping insertion in model container [2022-11-19 06:50:39,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:50:39" (2/3) ... [2022-11-19 06:50:39,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63836ae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:50:39, skipping insertion in model container [2022-11-19 06:50:39,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:50:39" (3/3) ... [2022-11-19 06:50:39,849 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_15x0-2.c [2022-11-19 06:50:39,869 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:50:39,869 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-19 06:50:39,947 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:50:39,958 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;@c5898c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:50:39,958 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-19 06:50:39,973 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 22 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 06:50:39,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 06:50:39,980 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:50:39,981 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 06:50:39,981 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 06:50:39,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:50:39,991 INFO L85 PathProgramCache]: Analyzing trace with hash 70444888, now seen corresponding path program 1 times [2022-11-19 06:50:40,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:50:40,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876372103] [2022-11-19 06:50:40,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:50:40,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:50:40,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:50:40,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:50:40,353 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:50:40,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876372103] [2022-11-19 06:50:40,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876372103] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:50:40,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:50:40,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:50:40,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825594333] [2022-11-19 06:50:40,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:50:40,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 06:50:40,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:50:40,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 06:50:40,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-19 06:50:40,391 INFO L87 Difference]: Start difference. First operand has 26 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 22 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:50:40,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:50:40,560 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2022-11-19 06:50:40,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:50:40,563 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-19 06:50:40,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:50:40,572 INFO L225 Difference]: With dead ends: 46 [2022-11-19 06:50:40,572 INFO L226 Difference]: Without dead ends: 42 [2022-11-19 06:50:40,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:50:40,579 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 33 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:50:40,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 62 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:50:40,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-19 06:50:40,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2022-11-19 06:50:40,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 24 states have (on average 1.5) internal successors, (36), 31 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 06:50:40,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2022-11-19 06:50:40,618 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 5 [2022-11-19 06:50:40,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:50:40,619 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2022-11-19 06:50:40,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:50:40,619 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2022-11-19 06:50:40,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 06:50:40,620 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:50:40,620 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 06:50:40,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:50:40,621 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting sumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 06:50:40,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:50:40,622 INFO L85 PathProgramCache]: Analyzing trace with hash 70445048, now seen corresponding path program 1 times [2022-11-19 06:50:40,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:50:40,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572812619] [2022-11-19 06:50:40,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:50:40,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:50:40,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:50:40,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:50:40,676 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:50:40,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572812619] [2022-11-19 06:50:40,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572812619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:50:40,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:50:40,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:50:40,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499499590] [2022-11-19 06:50:40,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:50:40,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:50:40,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:50:40,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:50:40,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:50:40,680 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:50:40,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:50:40,745 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2022-11-19 06:50:40,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:50:40,746 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-19 06:50:40,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:50:40,747 INFO L225 Difference]: With dead ends: 37 [2022-11-19 06:50:40,749 INFO L226 Difference]: Without dead ends: 36 [2022-11-19 06:50:40,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-19 06:50:40,751 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 34 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:50:40,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 17 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:50:40,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-19 06:50:40,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-11-19 06:50:40,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 30 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 06:50:40,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2022-11-19 06:50:40,766 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 5 [2022-11-19 06:50:40,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:50:40,768 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2022-11-19 06:50:40,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:50:40,770 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2022-11-19 06:50:40,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 06:50:40,771 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:50:40,771 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 06:50:40,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:50:40,772 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting sumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 06:50:40,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:50:40,777 INFO L85 PathProgramCache]: Analyzing trace with hash -2111175712, now seen corresponding path program 1 times [2022-11-19 06:50:40,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:50:40,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832901881] [2022-11-19 06:50:40,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:50:40,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:50:40,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:50:40,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:50:40,869 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:50:40,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832901881] [2022-11-19 06:50:40,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832901881] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:50:40,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:50:40,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:50:40,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86075432] [2022-11-19 06:50:40,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:50:40,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:50:40,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:50:40,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:50:40,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:50:40,873 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:50:40,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:50:40,949 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2022-11-19 06:50:40,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:50:40,950 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-19 06:50:40,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:50:40,951 INFO L225 Difference]: With dead ends: 45 [2022-11-19 06:50:40,951 INFO L226 Difference]: Without dead ends: 34 [2022-11-19 06:50:40,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-19 06:50:40,953 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 19 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:50:40,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 58 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:50:40,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-19 06:50:40,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-19 06:50:40,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 28 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 06:50:40,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2022-11-19 06:50:40,961 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 6 [2022-11-19 06:50:40,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:50:40,961 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2022-11-19 06:50:40,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:50:40,962 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2022-11-19 06:50:40,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-19 06:50:40,979 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:50:40,979 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:50:40,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 06:50:40,979 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 06:50:40,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:50:40,980 INFO L85 PathProgramCache]: Analyzing trace with hash 457251635, now seen corresponding path program 1 times [2022-11-19 06:50:40,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:50:40,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985136023] [2022-11-19 06:50:40,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:50:40,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:50:41,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:50:41,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:50:41,158 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:50:41,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985136023] [2022-11-19 06:50:41,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985136023] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:50:41,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598446167] [2022-11-19 06:50:41,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:50:41,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:50:41,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:50:41,166 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:50:41,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 06:50:41,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:50:41,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 06:50:41,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:50:41,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:50:41,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:50:41,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:50:41,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598446167] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:50:41,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1038901700] [2022-11-19 06:50:41,445 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-19 06:50:41,445 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:50:41,450 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 06:50:41,452 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:50:41,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2022-11-19 06:50:41,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717632256] [2022-11-19 06:50:41,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:50:41,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-19 06:50:41,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:50:41,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-19 06:50:41,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-11-19 06:50:41,456 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand has 18 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 11 states have internal predecessors, (29), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:50:41,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:50:41,810 INFO L93 Difference]: Finished difference Result 86 states and 96 transitions. [2022-11-19 06:50:41,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-19 06:50:41,811 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 11 states have internal predecessors, (29), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-19 06:50:41,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:50:41,812 INFO L225 Difference]: With dead ends: 86 [2022-11-19 06:50:41,812 INFO L226 Difference]: Without dead ends: 68 [2022-11-19 06:50:41,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2022-11-19 06:50:41,814 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 152 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:50:41,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 178 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 06:50:41,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-19 06:50:41,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 61. [2022-11-19 06:50:41,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 49 states have internal predecessors, (55), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-19 06:50:41,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2022-11-19 06:50:41,826 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 12 [2022-11-19 06:50:41,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:50:41,826 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2022-11-19 06:50:41,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 11 states have internal predecessors, (29), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:50:41,827 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2022-11-19 06:50:41,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-19 06:50:41,827 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:50:41,828 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-19 06:50:41,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-19 06:50:42,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:50:42,034 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting sumErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 06:50:42,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:50:42,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1647977428, now seen corresponding path program 1 times [2022-11-19 06:50:42,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:50:42,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409838538] [2022-11-19 06:50:42,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:50:42,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:50:42,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:50:42,149 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:50:42,153 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:50:42,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409838538] [2022-11-19 06:50:42,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409838538] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:50:42,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569541254] [2022-11-19 06:50:42,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:50:42,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:50:42,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:50:42,157 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:50:42,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 06:50:42,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:50:42,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 06:50:42,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:50:42,300 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:50:42,300 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:50:42,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569541254] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:50:42,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 06:50:42,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-11-19 06:50:42,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558193410] [2022-11-19 06:50:42,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:50:42,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 06:50:42,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:50:42,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 06:50:42,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-19 06:50:42,303 INFO L87 Difference]: Start difference. First operand 61 states and 67 transitions. Second operand has 7 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:50:42,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:50:42,362 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2022-11-19 06:50:42,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 06:50:42,362 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-19 06:50:42,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:50:42,363 INFO L225 Difference]: With dead ends: 61 [2022-11-19 06:50:42,363 INFO L226 Difference]: Without dead ends: 60 [2022-11-19 06:50:42,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-19 06:50:42,365 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 51 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:50:42,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 34 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:50:42,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-11-19 06:50:42,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-11-19 06:50:42,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 45 states have (on average 1.1333333333333333) internal successors, (51), 48 states have internal predecessors, (51), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-19 06:50:42,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2022-11-19 06:50:42,373 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 15 [2022-11-19 06:50:42,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:50:42,373 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2022-11-19 06:50:42,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:50:42,373 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2022-11-19 06:50:42,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-19 06:50:42,374 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:50:42,374 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1] [2022-11-19 06:50:42,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 06:50:42,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:50:42,580 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting sumErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 06:50:42,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:50:42,581 INFO L85 PathProgramCache]: Analyzing trace with hash -461869766, now seen corresponding path program 1 times [2022-11-19 06:50:42,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:50:42,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886393361] [2022-11-19 06:50:42,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:50:42,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:50:42,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:50:42,761 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:50:42,761 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:50:42,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886393361] [2022-11-19 06:50:42,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886393361] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:50:42,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839606820] [2022-11-19 06:50:42,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:50:42,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:50:42,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:50:42,764 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:50:42,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 06:50:42,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:50:42,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 06:50:42,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:50:42,924 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:50:42,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:50:43,035 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:50:43,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839606820] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:50:43,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1130510005] [2022-11-19 06:50:43,039 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-19 06:50:43,039 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:50:43,040 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 06:50:43,043 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:50:43,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-11-19 06:50:43,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378699495] [2022-11-19 06:50:43,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:50:43,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-19 06:50:43,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:50:43,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-19 06:50:43,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2022-11-19 06:50:43,048 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand has 19 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 11 states have internal predecessors, (43), 8 states have call successors, (8), 7 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:50:43,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:50:43,341 INFO L93 Difference]: Finished difference Result 91 states and 98 transitions. [2022-11-19 06:50:43,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-19 06:50:43,342 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 11 states have internal predecessors, (43), 8 states have call successors, (8), 7 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-19 06:50:43,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:50:43,343 INFO L225 Difference]: With dead ends: 91 [2022-11-19 06:50:43,343 INFO L226 Difference]: Without dead ends: 90 [2022-11-19 06:50:43,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2022-11-19 06:50:43,344 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 160 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:50:43,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 132 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 06:50:43,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-11-19 06:50:43,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 84. [2022-11-19 06:50:43,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 65 states have (on average 1.1538461538461537) internal successors, (75), 68 states have internal predecessors, (75), 8 states have call successors, (8), 7 states have call predecessors, (8), 7 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-19 06:50:43,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 91 transitions. [2022-11-19 06:50:43,353 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 91 transitions. Word has length 21 [2022-11-19 06:50:43,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:50:43,354 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 91 transitions. [2022-11-19 06:50:43,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 11 states have internal predecessors, (43), 8 states have call successors, (8), 7 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:50:43,354 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 91 transitions. [2022-11-19 06:50:43,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-19 06:50:43,355 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:50:43,355 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2022-11-19 06:50:43,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 06:50:43,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:50:43,556 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 06:50:43,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:50:43,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1011345768, now seen corresponding path program 2 times [2022-11-19 06:50:43,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:50:43,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267841002] [2022-11-19 06:50:43,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:50:43,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:50:43,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:50:43,774 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:50:43,774 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:50:43,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267841002] [2022-11-19 06:50:43,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267841002] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:50:43,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634958959] [2022-11-19 06:50:43,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:50:43,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:50:43,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:50:43,778 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:50:43,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 06:50:43,846 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-19 06:50:43,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:50:43,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 06:50:43,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:50:43,939 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-19 06:50:43,939 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:50:43,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634958959] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:50:43,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 06:50:43,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 17 [2022-11-19 06:50:43,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460934172] [2022-11-19 06:50:43,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:50:43,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 06:50:43,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:50:43,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 06:50:43,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-11-19 06:50:43,950 INFO L87 Difference]: Start difference. First operand 84 states and 91 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:50:44,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:50:44,072 INFO L93 Difference]: Finished difference Result 90 states and 98 transitions. [2022-11-19 06:50:44,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 06:50:44,073 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-11-19 06:50:44,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:50:44,079 INFO L225 Difference]: With dead ends: 90 [2022-11-19 06:50:44,079 INFO L226 Difference]: Without dead ends: 89 [2022-11-19 06:50:44,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2022-11-19 06:50:44,083 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 28 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:50:44,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 52 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:50:44,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-11-19 06:50:44,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 83. [2022-11-19 06:50:44,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 65 states have (on average 1.1076923076923078) internal successors, (72), 67 states have internal predecessors, (72), 8 states have call successors, (8), 7 states have call predecessors, (8), 7 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-19 06:50:44,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 88 transitions. [2022-11-19 06:50:44,110 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 88 transitions. Word has length 33 [2022-11-19 06:50:44,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:50:44,110 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 88 transitions. [2022-11-19 06:50:44,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:50:44,111 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 88 transitions. [2022-11-19 06:50:44,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-19 06:50:44,112 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:50:44,112 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2022-11-19 06:50:44,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 06:50:44,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-19 06:50:44,318 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting sumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 06:50:44,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:50:44,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1286947680, now seen corresponding path program 1 times [2022-11-19 06:50:44,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:50:44,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991678163] [2022-11-19 06:50:44,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:50:44,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:50:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:50:44,507 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:50:44,508 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:50:44,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991678163] [2022-11-19 06:50:44,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991678163] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:50:44,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023733368] [2022-11-19 06:50:44,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:50:44,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:50:44,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:50:44,510 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:50:44,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 06:50:44,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:50:44,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 06:50:44,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:50:44,643 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:50:44,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:50:44,842 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:50:44,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023733368] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:50:44,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1573434291] [2022-11-19 06:50:44,848 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-19 06:50:44,848 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:50:44,849 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 06:50:44,849 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:50:44,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2022-11-19 06:50:44,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567524927] [2022-11-19 06:50:44,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:50:44,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-19 06:50:44,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:50:44,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-19 06:50:44,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2022-11-19 06:50:44,854 INFO L87 Difference]: Start difference. First operand 83 states and 88 transitions. Second operand has 24 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 13 states have internal predecessors, (56), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:50:45,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:50:45,248 INFO L93 Difference]: Finished difference Result 156 states and 168 transitions. [2022-11-19 06:50:45,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-19 06:50:45,251 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 13 states have internal predecessors, (56), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-11-19 06:50:45,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:50:45,252 INFO L225 Difference]: With dead ends: 156 [2022-11-19 06:50:45,253 INFO L226 Difference]: Without dead ends: 125 [2022-11-19 06:50:45,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=311, Invalid=811, Unknown=0, NotChecked=0, Total=1122 [2022-11-19 06:50:45,257 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 219 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:50:45,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 256 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 06:50:45,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-11-19 06:50:45,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 119. [2022-11-19 06:50:45,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 93 states have (on average 1.075268817204301) internal successors, (100), 95 states have internal predecessors, (100), 12 states have call successors, (12), 11 states have call predecessors, (12), 11 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-19 06:50:45,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 124 transitions. [2022-11-19 06:50:45,278 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 124 transitions. Word has length 34 [2022-11-19 06:50:45,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:50:45,278 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 124 transitions. [2022-11-19 06:50:45,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 13 states have internal predecessors, (56), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:50:45,279 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 124 transitions. [2022-11-19 06:50:45,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-19 06:50:45,280 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:50:45,280 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 1, 1, 1] [2022-11-19 06:50:45,286 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-19 06:50:45,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:50:45,485 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting sumErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 06:50:45,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:50:45,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1412897914, now seen corresponding path program 2 times [2022-11-19 06:50:45,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:50:45,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370801341] [2022-11-19 06:50:45,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:50:45,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:50:45,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:50:45,738 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:50:45,738 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:50:45,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370801341] [2022-11-19 06:50:45,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370801341] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:50:45,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214948522] [2022-11-19 06:50:45,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:50:45,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:50:45,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:50:45,742 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:50:45,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 06:50:45,810 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-19 06:50:45,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:50:45,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-19 06:50:45,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:50:45,969 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:50:45,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:50:46,292 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:50:46,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214948522] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:50:46,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [926465225] [2022-11-19 06:50:46,295 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-19 06:50:46,295 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:50:46,295 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 06:50:46,295 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:50:46,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-11-19 06:50:46,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364165959] [2022-11-19 06:50:46,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:50:46,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-19 06:50:46,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:50:46,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-19 06:50:46,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=910, Unknown=0, NotChecked=0, Total=1190 [2022-11-19 06:50:46,298 INFO L87 Difference]: Start difference. First operand 119 states and 124 transitions. Second operand has 35 states, 31 states have (on average 2.935483870967742) internal successors, (91), 19 states have internal predecessors, (91), 16 states have call successors, (16), 15 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:50:46,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:50:46,795 INFO L93 Difference]: Finished difference Result 174 states and 187 transitions. [2022-11-19 06:50:46,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-19 06:50:46,796 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 31 states have (on average 2.935483870967742) internal successors, (91), 19 states have internal predecessors, (91), 16 states have call successors, (16), 15 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2022-11-19 06:50:46,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:50:46,798 INFO L225 Difference]: With dead ends: 174 [2022-11-19 06:50:46,799 INFO L226 Difference]: Without dead ends: 173 [2022-11-19 06:50:46,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=611, Invalid=1741, Unknown=0, NotChecked=0, Total=2352 [2022-11-19 06:50:46,803 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 411 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:50:46,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 296 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 06:50:46,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-11-19 06:50:46,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 167. [2022-11-19 06:50:46,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 133 states have (on average 1.0827067669172932) internal successors, (144), 135 states have internal predecessors, (144), 16 states have call successors, (16), 15 states have call predecessors, (16), 15 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-19 06:50:46,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 176 transitions. [2022-11-19 06:50:46,835 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 176 transitions. Word has length 49 [2022-11-19 06:50:46,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:50:46,836 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 176 transitions. [2022-11-19 06:50:46,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 31 states have (on average 2.935483870967742) internal successors, (91), 19 states have internal predecessors, (91), 16 states have call successors, (16), 15 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:50:46,836 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 176 transitions. [2022-11-19 06:50:46,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-19 06:50:46,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:50:46,845 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1] [2022-11-19 06:50:46,852 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-19 06:50:47,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:50:47,046 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting sumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 06:50:47,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:50:47,046 INFO L85 PathProgramCache]: Analyzing trace with hash -2106284608, now seen corresponding path program 2 times [2022-11-19 06:50:47,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:50:47,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021700296] [2022-11-19 06:50:47,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:50:47,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:50:47,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:50:47,614 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:50:47,615 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:50:47,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021700296] [2022-11-19 06:50:47,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021700296] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:50:47,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14470068] [2022-11-19 06:50:47,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:50:47,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:50:47,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:50:47,616 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:50:47,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 06:50:47,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-19 06:50:47,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:50:47,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 06:50:47,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:50:47,801 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2022-11-19 06:50:47,802 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:50:47,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14470068] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:50:47,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 06:50:47,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [24] total 29 [2022-11-19 06:50:47,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322367260] [2022-11-19 06:50:47,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:50:47,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 06:50:47,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:50:47,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 06:50:47,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=635, Unknown=0, NotChecked=0, Total=812 [2022-11-19 06:50:47,806 INFO L87 Difference]: Start difference. First operand 167 states and 176 transitions. Second operand has 6 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:50:47,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:50:47,923 INFO L93 Difference]: Finished difference Result 177 states and 187 transitions. [2022-11-19 06:50:47,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 06:50:47,923 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-11-19 06:50:47,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:50:47,932 INFO L225 Difference]: With dead ends: 177 [2022-11-19 06:50:47,932 INFO L226 Difference]: Without dead ends: 176 [2022-11-19 06:50:47,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=188, Invalid=742, Unknown=0, NotChecked=0, Total=930 [2022-11-19 06:50:47,933 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 30 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:50:47,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 37 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:50:47,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-11-19 06:50:47,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 166. [2022-11-19 06:50:47,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 133 states have (on average 1.0451127819548873) internal successors, (139), 134 states have internal predecessors, (139), 16 states have call successors, (16), 15 states have call predecessors, (16), 15 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-19 06:50:47,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 171 transitions. [2022-11-19 06:50:47,962 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 171 transitions. Word has length 76 [2022-11-19 06:50:47,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:50:47,963 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 171 transitions. [2022-11-19 06:50:47,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:50:47,963 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 171 transitions. [2022-11-19 06:50:47,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-19 06:50:47,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:50:47,972 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 1, 1, 1] [2022-11-19 06:50:47,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-19 06:50:48,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-19 06:50:48,177 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting sumErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 06:50:48,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:50:48,178 INFO L85 PathProgramCache]: Analyzing trace with hash -2130027782, now seen corresponding path program 3 times [2022-11-19 06:50:48,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:50:48,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055910655] [2022-11-19 06:50:48,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:50:48,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:50:48,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:50:49,101 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 0 proven. 707 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:50:49,102 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:50:49,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055910655] [2022-11-19 06:50:49,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055910655] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:50:49,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256368798] [2022-11-19 06:50:49,102 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 06:50:49,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:50:49,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:50:49,106 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:50:49,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-19 06:50:49,189 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 06:50:49,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:50:49,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-19 06:50:49,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:50:49,453 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 0 proven. 707 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:50:49,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:50:50,615 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 0 proven. 707 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:50:50,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256368798] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:50:50,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1009337584] [2022-11-19 06:50:50,617 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-19 06:50:50,617 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:50:50,618 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 06:50:50,618 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:50:50,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 65 [2022-11-19 06:50:50,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865346810] [2022-11-19 06:50:50,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:50:50,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-11-19 06:50:50,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:50:50,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-11-19 06:50:50,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1064, Invalid=3358, Unknown=0, NotChecked=0, Total=4422 [2022-11-19 06:50:50,623 INFO L87 Difference]: Start difference. First operand 166 states and 171 transitions. Second operand has 67 states, 63 states have (on average 2.9682539682539684) internal successors, (187), 35 states have internal predecessors, (187), 32 states have call successors, (32), 31 states have call predecessors, (32), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:50:52,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:50:52,123 INFO L93 Difference]: Finished difference Result 361 states and 398 transitions. [2022-11-19 06:50:52,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-11-19 06:50:52,126 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 63 states have (on average 2.9682539682539684) internal successors, (187), 35 states have internal predecessors, (187), 32 states have call successors, (32), 31 states have call predecessors, (32), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2022-11-19 06:50:52,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:50:52,128 INFO L225 Difference]: With dead ends: 361 [2022-11-19 06:50:52,128 INFO L226 Difference]: Without dead ends: 360 [2022-11-19 06:50:52,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2062 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2491, Invalid=6821, Unknown=0, NotChecked=0, Total=9312 [2022-11-19 06:50:52,133 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 1249 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1251 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 06:50:52,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1251 Valid, 547 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 710 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 06:50:52,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-11-19 06:50:52,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 358. [2022-11-19 06:50:52,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 293 states have (on average 1.075085324232082) internal successors, (315), 294 states have internal predecessors, (315), 32 states have call successors, (32), 31 states have call predecessors, (32), 31 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-11-19 06:50:52,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 379 transitions. [2022-11-19 06:50:52,188 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 379 transitions. Word has length 105 [2022-11-19 06:50:52,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:50:52,189 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 379 transitions. [2022-11-19 06:50:52,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 63 states have (on average 2.9682539682539684) internal successors, (187), 35 states have internal predecessors, (187), 32 states have call successors, (32), 31 states have call predecessors, (32), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:50:52,190 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 379 transitions. [2022-11-19 06:50:52,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-19 06:50:52,193 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:50:52,193 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:50:52,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-19 06:50:52,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-19 06:50:52,400 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 06:50:52,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:50:52,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1822221276, now seen corresponding path program 1 times [2022-11-19 06:50:52,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:50:52,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082489514] [2022-11-19 06:50:52,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:50:52,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:50:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:50:52,464 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2022-11-19 06:50:52,464 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:50:52,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082489514] [2022-11-19 06:50:52,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082489514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:50:52,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:50:52,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:50:52,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664081868] [2022-11-19 06:50:52,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:50:52,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:50:52,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:50:52,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:50:52,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:50:52,468 INFO L87 Difference]: Start difference. First operand 358 states and 379 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 06:50:52,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:50:52,488 INFO L93 Difference]: Finished difference Result 358 states and 379 transitions. [2022-11-19 06:50:52,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:50:52,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 110 [2022-11-19 06:50:52,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:50:52,490 INFO L225 Difference]: With dead ends: 358 [2022-11-19 06:50:52,490 INFO L226 Difference]: Without dead ends: 220 [2022-11-19 06:50:52,494 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 [2022-11-19 06:50:52,495 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:50:52,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:50:52,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-11-19 06:50:52,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 218. [2022-11-19 06:50:52,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 186 states have (on average 1.0053763440860215) internal successors, (187), 186 states have internal predecessors, (187), 31 states have call successors, (31), 31 states have call predecessors, (31), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:50:52,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 218 transitions. [2022-11-19 06:50:52,516 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 218 transitions. Word has length 110 [2022-11-19 06:50:52,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:50:52,516 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 218 transitions. [2022-11-19 06:50:52,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 06:50:52,517 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 218 transitions. [2022-11-19 06:50:52,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-11-19 06:50:52,520 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:50:52,520 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 30, 30, 30, 1, 1, 1] [2022-11-19 06:50:52,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-19 06:50:52,520 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting sumErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 06:50:52,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:50:52,521 INFO L85 PathProgramCache]: Analyzing trace with hash -825731078, now seen corresponding path program 4 times [2022-11-19 06:50:52,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:50:52,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727683137] [2022-11-19 06:50:52,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:50:52,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:50:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:50:53,600 INFO L134 CoverageAnalysis]: Checked inductivity of 3195 backedges. 2415 proven. 0 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2022-11-19 06:50:53,601 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:50:53,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727683137] [2022-11-19 06:50:53,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727683137] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:50:53,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:50:53,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-11-19 06:50:53,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68281791] [2022-11-19 06:50:53,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:50:53,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-19 06:50:53,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:50:53,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-19 06:50:53,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=883, Unknown=0, NotChecked=0, Total=1190 [2022-11-19 06:50:53,603 INFO L87 Difference]: Start difference. First operand 218 states and 218 transitions. Second operand has 35 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 18 states have internal predecessors, (100), 17 states have call successors, (17), 17 states have call predecessors, (17), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:50:54,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:50:54,094 INFO L93 Difference]: Finished difference Result 218 states and 218 transitions. [2022-11-19 06:50:54,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-19 06:50:54,095 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 18 states have internal predecessors, (100), 17 states have call successors, (17), 17 states have call predecessors, (17), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 217 [2022-11-19 06:50:54,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:50:54,096 INFO L225 Difference]: With dead ends: 218 [2022-11-19 06:50:54,096 INFO L226 Difference]: Without dead ends: 0 [2022-11-19 06:50:54,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=731, Invalid=1819, Unknown=0, NotChecked=0, Total=2550 [2022-11-19 06:50:54,098 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 91 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 06:50:54,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 214 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 06:50:54,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-19 06:50:54,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-19 06:50:54,100 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) [2022-11-19 06:50:54,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-19 06:50:54,100 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 217 [2022-11-19 06:50:54,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:50:54,101 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-19 06:50:54,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 18 states have internal predecessors, (100), 17 states have call successors, (17), 17 states have call predecessors, (17), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:50:54,101 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-19 06:50:54,101 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-19 06:50:54,104 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 8 remaining) [2022-11-19 06:50:54,105 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 8 remaining) [2022-11-19 06:50:54,105 INFO L805 garLoopResultBuilder]: Registering result SAFE for location sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 8 remaining) [2022-11-19 06:50:54,105 INFO L805 garLoopResultBuilder]: Registering result SAFE for location sumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 8 remaining) [2022-11-19 06:50:54,106 INFO L805 garLoopResultBuilder]: Registering result SAFE for location sumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 8 remaining) [2022-11-19 06:50:54,106 INFO L805 garLoopResultBuilder]: Registering result SAFE for location sumErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 8 remaining) [2022-11-19 06:50:54,106 INFO L805 garLoopResultBuilder]: Registering result SAFE for location sumErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 8 remaining) [2022-11-19 06:50:54,106 INFO L805 garLoopResultBuilder]: Registering result SAFE for location sumErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 8 remaining) [2022-11-19 06:50:54,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-19 06:50:54,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-19 06:50:55,102 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2022-11-19 06:50:55,114 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-19 06:50:55,114 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2022-11-19 06:50:55,114 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-19 06:50:55,115 INFO L899 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2022-11-19 06:50:55,115 INFO L895 garLoopResultBuilder]: At program point L16(line 16) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~a~0#1| 15) (= |ULTIMATE.start_main_~b~0#1| 0) (<= 15 |ULTIMATE.start_main_~a~0#1|)) [2022-11-19 06:50:55,115 INFO L899 garLoopResultBuilder]: For program point L17-1(line 17) no Hoare annotation was computed. [2022-11-19 06:50:55,116 INFO L899 garLoopResultBuilder]: For program point L16-1(line 16) no Hoare annotation was computed. [2022-11-19 06:50:55,116 INFO L899 garLoopResultBuilder]: For program point sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 7) no Hoare annotation was computed. [2022-11-19 06:50:55,116 INFO L899 garLoopResultBuilder]: For program point sumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 7) no Hoare annotation was computed. [2022-11-19 06:50:55,116 INFO L899 garLoopResultBuilder]: For program point sumEXIT(lines 5 11) no Hoare annotation was computed. [2022-11-19 06:50:55,116 INFO L899 garLoopResultBuilder]: For program point sumErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 9) no Hoare annotation was computed. [2022-11-19 06:50:55,116 INFO L899 garLoopResultBuilder]: For program point sumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 9) no Hoare annotation was computed. [2022-11-19 06:50:55,117 INFO L899 garLoopResultBuilder]: For program point sumErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 9) no Hoare annotation was computed. [2022-11-19 06:50:55,117 INFO L899 garLoopResultBuilder]: For program point sumErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 9) no Hoare annotation was computed. [2022-11-19 06:50:55,117 INFO L902 garLoopResultBuilder]: At program point sumENTRY(lines 5 11) the Hoare annotation is: true [2022-11-19 06:50:55,117 INFO L899 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2022-11-19 06:50:55,117 INFO L899 garLoopResultBuilder]: For program point L9-1(line 9) no Hoare annotation was computed. [2022-11-19 06:50:55,117 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2022-11-19 06:50:55,118 INFO L899 garLoopResultBuilder]: For program point L9-2(line 9) no Hoare annotation was computed. [2022-11-19 06:50:55,118 INFO L899 garLoopResultBuilder]: For program point L6(lines 6 10) no Hoare annotation was computed. [2022-11-19 06:50:55,118 INFO L899 garLoopResultBuilder]: For program point L7-1(line 7) no Hoare annotation was computed. [2022-11-19 06:50:55,118 INFO L899 garLoopResultBuilder]: For program point L9-3(line 9) no Hoare annotation was computed. [2022-11-19 06:50:55,119 INFO L895 garLoopResultBuilder]: At program point L9-4(line 9) the Hoare annotation is: (let ((.cse0 (not (<= 1 |sum_#in~m|))) (.cse2 (not (<= 0 |sum_#in~n|))) (.cse1 (<= 1 sum_~m)) (.cse3 (< 0 sum_~n))) (and (or .cse0 (and .cse1 (<= sum_~m 8) (< 1 sum_~n) (<= sum_~n 7)) (not (< 1 |sum_#in~n|)) (not (<= |sum_#in~n| 7)) (not (<= |sum_#in~m| 8))) (or .cse0 (not (<= |sum_#in~n| 3)) .cse2 (and (<= sum_~n 3) .cse1 .cse3 (<= sum_~m 12)) (not (<= |sum_#in~m| 12))) (or .cse0 (not (<= |sum_#in~n| 11)) (and (<= sum_~m 4) .cse1 (<= 11 sum_~n) (<= sum_~n 11)) (not (<= |sum_#in~m| 4)) (not (<= 11 |sum_#in~n|))) (or (and (<= sum_~n 15) (<= 15 sum_~n) (= sum_~m 0)) (not (= |sum_#in~m| 0)) (not (<= 15 |sum_#in~n|)) (not (<= |sum_#in~n| 15))) (or .cse0 (and (<= sum_~m 2) (<= sum_~n 13) .cse1 (<= 13 sum_~n)) (not (<= |sum_#in~n| 13)) (not (<= |sum_#in~m| 2)) (not (<= 13 |sum_#in~n|))) (or .cse0 (not (<= |sum_#in~m| 11)) (and (<= sum_~n 4) .cse1 (<= sum_~m 11) .cse3) (not (<= |sum_#in~n| 4)) .cse2) (or .cse0 (not (<= |sum_#in~n| 0)) .cse2 (not (< |sum_#in~m| 2147483633))) (or .cse0 (not (<= |sum_#in~m| 3)) (not (<= |sum_#in~n| 12)) (and (<= sum_~m 3) .cse1 (<= sum_~n 12) (<= 12 sum_~n)) (not (<= 12 |sum_#in~n|))) (or .cse0 (and (< 2 sum_~n) (<= sum_~n 8) .cse1 (<= sum_~m 7)) (not (<= |sum_#in~m| 7)) (not (< 2 |sum_#in~n|)) (not (<= |sum_#in~n| 8))) (or .cse0 (not (<= |sum_#in~n| 2)) .cse2 (not (<= |sum_#in~m| 13)) (and (<= sum_~n 2) .cse1 .cse3 (<= sum_~m 13))) (or .cse0 (not (<= |sum_#in~m| 6)) (and (< 3 sum_~n) (<= sum_~n 9) .cse1 (<= sum_~m 6)) (not (< 3 |sum_#in~n|)) (not (<= |sum_#in~n| 9))) (or .cse0 (not (<= |sum_#in~m| 9)) (not (<= |sum_#in~n| 6)) .cse2 (and .cse1 (<= sum_~m 9) .cse3 (<= sum_~n 6))) (or .cse0 (not (<= |sum_#in~n| 10)) (not (<= |sum_#in~m| 5)) (not (< 4 |sum_#in~n|)) (and (< 4 sum_~n) .cse1 (<= sum_~n 10) (<= sum_~m 5))) (or .cse0 (not (<= |sum_#in~m| 1)) (not (<= |sum_#in~n| 14)) (and .cse1 (<= sum_~n 14) (<= sum_~m 1) (<= 14 sum_~n)) (not (<= 14 |sum_#in~n|))) (or .cse0 .cse2 (and (<= sum_~m 14) (<= sum_~n 1) .cse1 .cse3) (not (<= |sum_#in~n| 1)) (not (<= |sum_#in~m| 14))) (or .cse0 (not (<= |sum_#in~n| 5)) (not (<= |sum_#in~m| 10)) .cse2 (and (<= sum_~n 5) .cse1 .cse3 (<= sum_~m 10))))) [2022-11-19 06:50:55,120 INFO L899 garLoopResultBuilder]: For program point L9-5(line 9) no Hoare annotation was computed. [2022-11-19 06:50:55,120 INFO L899 garLoopResultBuilder]: For program point sumFINAL(lines 5 11) no Hoare annotation was computed. [2022-11-19 06:50:55,123 INFO L444 BasicCegarLoop]: Path program histogram: [4, 2, 2, 1, 1, 1, 1, 1] [2022-11-19 06:50:55,132 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 06:50:55,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 06:50:55 BoogieIcfgContainer [2022-11-19 06:50:55,135 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 06:50:55,136 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 06:50:55,137 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 06:50:55,137 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 06:50:55,138 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:50:39" (3/4) ... [2022-11-19 06:50:55,141 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-19 06:50:55,146 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure sum [2022-11-19 06:50:55,153 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-11-19 06:50:55,153 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-11-19 06:50:55,154 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-19 06:50:55,154 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 06:50:55,192 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 06:50:55,192 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 06:50:55,193 INFO L158 Benchmark]: Toolchain (without parser) took 16084.79ms. Allocated memory was 90.2MB in the beginning and 232.8MB in the end (delta: 142.6MB). Free memory was 54.8MB in the beginning and 102.0MB in the end (delta: -47.2MB). Peak memory consumption was 93.8MB. Max. memory is 16.1GB. [2022-11-19 06:50:55,193 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 90.2MB. Free memory was 70.7MB in the beginning and 70.7MB in the end (delta: 47.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:50:55,193 INFO L158 Benchmark]: CACSL2BoogieTranslator took 240.43ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 54.6MB in the beginning and 85.9MB in the end (delta: -31.3MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2022-11-19 06:50:55,194 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.89ms. Allocated memory is still 109.1MB. Free memory was 85.7MB in the beginning and 84.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:50:55,195 INFO L158 Benchmark]: Boogie Preprocessor took 41.25ms. Allocated memory is still 109.1MB. Free memory was 84.4MB in the beginning and 83.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:50:55,195 INFO L158 Benchmark]: RCFGBuilder took 402.32ms. Allocated memory is still 109.1MB. Free memory was 83.4MB in the beginning and 72.8MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 06:50:55,196 INFO L158 Benchmark]: TraceAbstraction took 15294.87ms. Allocated memory was 109.1MB in the beginning and 232.8MB in the end (delta: 123.7MB). Free memory was 72.1MB in the beginning and 104.1MB in the end (delta: -32.0MB). Peak memory consumption was 92.2MB. Max. memory is 16.1GB. [2022-11-19 06:50:55,196 INFO L158 Benchmark]: Witness Printer took 56.20ms. Allocated memory is still 232.8MB. 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. [2022-11-19 06:50:55,203 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 90.2MB. Free memory was 70.7MB in the beginning and 70.7MB in the end (delta: 47.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 240.43ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 54.6MB in the beginning and 85.9MB in the end (delta: -31.3MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.89ms. Allocated memory is still 109.1MB. Free memory was 85.7MB in the beginning and 84.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.25ms. Allocated memory is still 109.1MB. Free memory was 84.4MB in the beginning and 83.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 402.32ms. Allocated memory is still 109.1MB. Free memory was 83.4MB in the beginning and 72.8MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 15294.87ms. Allocated memory was 109.1MB in the beginning and 232.8MB in the end (delta: 123.7MB). Free memory was 72.1MB in the beginning and 104.1MB in the end (delta: -32.0MB). Peak memory consumption was 92.2MB. Max. memory is 16.1GB. * Witness Printer took 56.20ms. Allocated memory is still 232.8MB. 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: 15.2s, OverallIterations: 13, TraceHistogramMax: 31, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.1s, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2493 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2477 mSDsluCounter, 1914 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1630 mSDsCounter, 428 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2499 IncrementalHoareTripleChecker+Invalid, 2927 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 428 mSolverCounterUnsat, 284 mSDtfsCounter, 2499 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 813 GetRequests, 468 SyntacticMatches, 0 SemanticMatches, 345 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3623 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=358occurred in iteration=11, InterpolantAutomatonStates: 227, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 50 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 63 PreInvPairs, 63 NumberOfFragments, 472 HoareAnnotationTreeSize, 63 FomulaSimplifications, 688 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 1246 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.8s InterpolantComputationTime, 1033 NumberOfCodeBlocks, 949 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 1228 ConstructedInterpolants, 0 QuantifiedInterpolants, 3107 SizeOfPredicates, 37 NumberOfNonLiveVariables, 789 ConjunctsInSsa, 92 ConjunctsInUnsatCore, 26 InterpolantComputations, 8 PerfectInterpolantSequences, 4076/7200 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-19 06:50:55,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c33462fb-6a3c-46dc-a649-9fe0259bb7a9/bin/utaipan-I9t0OCRTmS/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