./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/sum01_bug02.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50038249-60b4-4b7d-a400-907a7cdceba7/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50038249-60b4-4b7d-a400-907a7cdceba7/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50038249-60b4-4b7d-a400-907a7cdceba7/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50038249-60b4-4b7d-a400-907a7cdceba7/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/sum01_bug02.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50038249-60b4-4b7d-a400-907a7cdceba7/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50038249-60b4-4b7d-a400-907a7cdceba7/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 29d100da65e2ae9d5c43d48b49216d155078158e341858baee0b08b697e15c8e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 01:23:27,852 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:23:27,856 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:23:27,910 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:23:27,912 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:23:27,917 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:23:27,920 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:23:27,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:23:27,951 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:23:27,958 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:23:27,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:23:27,961 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:23:27,962 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:23:27,963 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:23:27,965 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:23:27,966 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:23:27,967 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:23:27,969 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:23:27,971 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:23:27,973 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:23:27,975 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:23:27,977 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:23:27,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:23:27,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:23:28,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:23:28,002 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:23:28,003 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:23:28,004 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:23:28,005 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:23:28,006 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:23:28,007 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:23:28,008 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:23:28,009 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:23:28,010 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:23:28,011 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:23:28,012 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:23:28,013 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:23:28,013 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:23:28,014 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:23:28,015 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:23:28,016 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:23:28,017 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50038249-60b4-4b7d-a400-907a7cdceba7/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 01:23:28,049 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:23:28,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:23:28,056 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:23:28,056 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:23:28,057 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:23:28,058 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:23:28,058 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:23:28,058 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:23:28,059 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:23:28,059 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:23:28,060 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:23:28,061 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:23:28,061 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:23:28,061 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:23:28,061 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:23:28,062 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:23:28,062 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:23:28,062 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:23:28,063 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:23:28,063 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 01:23:28,064 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:23:28,064 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 01:23:28,064 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:23:28,064 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:23:28,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:23:28,065 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:23:28,066 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 01:23:28,066 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:23:28,067 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:23:28,067 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:23:28,067 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:23:28,068 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:23:28,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:23:28,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:23:28,068 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:23:28,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:23:28,069 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:23:28,069 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:23:28,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:23:28,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:23:28,070 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:23:28,070 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_50038249-60b4-4b7d-a400-907a7cdceba7/bin/utaipan-g80aRyZoba/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50038249-60b4-4b7d-a400-907a7cdceba7/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29d100da65e2ae9d5c43d48b49216d155078158e341858baee0b08b697e15c8e [2022-11-22 01:23:28,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:23:28,480 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:23:28,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:23:28,485 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:23:28,486 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:23:28,487 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50038249-60b4-4b7d-a400-907a7cdceba7/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/loops/sum01_bug02.i [2022-11-22 01:23:32,131 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:23:32,433 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:23:32,434 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50038249-60b4-4b7d-a400-907a7cdceba7/sv-benchmarks/c/loops/sum01_bug02.i [2022-11-22 01:23:32,448 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50038249-60b4-4b7d-a400-907a7cdceba7/bin/utaipan-g80aRyZoba/data/79cb44306/fe4014b3f6df410094bec2a3c3dc2210/FLAG9a9853252 [2022-11-22 01:23:32,464 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50038249-60b4-4b7d-a400-907a7cdceba7/bin/utaipan-g80aRyZoba/data/79cb44306/fe4014b3f6df410094bec2a3c3dc2210 [2022-11-22 01:23:32,467 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:23:32,469 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:23:32,471 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:23:32,471 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:23:32,486 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:23:32,487 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:23:32" (1/1) ... [2022-11-22 01:23:32,489 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36fe7431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:23:32, skipping insertion in model container [2022-11-22 01:23:32,490 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:23:32" (1/1) ... [2022-11-22 01:23:32,500 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:23:32,526 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:23:32,684 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50038249-60b4-4b7d-a400-907a7cdceba7/sv-benchmarks/c/loops/sum01_bug02.i[812,825] [2022-11-22 01:23:32,699 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:23:32,710 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:23:32,726 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50038249-60b4-4b7d-a400-907a7cdceba7/sv-benchmarks/c/loops/sum01_bug02.i[812,825] [2022-11-22 01:23:32,731 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:23:32,748 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:23:32,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:23:32 WrapperNode [2022-11-22 01:23:32,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:23:32,750 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:23:32,750 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:23:32,751 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:23:32,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:23:32" (1/1) ... [2022-11-22 01:23:32,766 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:23:32" (1/1) ... [2022-11-22 01:23:32,784 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 37 [2022-11-22 01:23:32,785 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:23:32,786 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:23:32,786 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:23:32,786 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:23:32,795 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:23:32" (1/1) ... [2022-11-22 01:23:32,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:23:32" (1/1) ... [2022-11-22 01:23:32,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:23:32" (1/1) ... [2022-11-22 01:23:32,797 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:23:32" (1/1) ... [2022-11-22 01:23:32,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:23:32" (1/1) ... [2022-11-22 01:23:32,805 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:23:32" (1/1) ... [2022-11-22 01:23:32,806 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:23:32" (1/1) ... [2022-11-22 01:23:32,807 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:23:32" (1/1) ... [2022-11-22 01:23:32,809 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:23:32,811 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:23:32,811 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:23:32,811 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:23:32,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:23:32" (1/1) ... [2022-11-22 01:23:32,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:23:32,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50038249-60b4-4b7d-a400-907a7cdceba7/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:23:32,854 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50038249-60b4-4b7d-a400-907a7cdceba7/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:23:32,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50038249-60b4-4b7d-a400-907a7cdceba7/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:23:32,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:23:32,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:23:32,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:23:32,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:23:32,982 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:23:32,985 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:23:33,133 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:23:33,176 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:23:33,176 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 01:23:33,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:23:33 BoogieIcfgContainer [2022-11-22 01:23:33,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:23:33,183 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:23:33,183 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:23:33,188 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:23:33,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:23:32" (1/3) ... [2022-11-22 01:23:33,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d23edf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:23:33, skipping insertion in model container [2022-11-22 01:23:33,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:23:32" (2/3) ... [2022-11-22 01:23:33,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d23edf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:23:33, skipping insertion in model container [2022-11-22 01:23:33,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:23:33" (3/3) ... [2022-11-22 01:23:33,192 INFO L112 eAbstractionObserver]: Analyzing ICFG sum01_bug02.i [2022-11-22 01:23:33,222 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:23:33,222 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 01:23:33,285 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:23:33,294 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;@4909ca33, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:23:33,295 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 01:23:33,301 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:23:33,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 01:23:33,309 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:23:33,310 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 01:23:33,311 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:23:33,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:23:33,318 INFO L85 PathProgramCache]: Analyzing trace with hash 68598135, now seen corresponding path program 1 times [2022-11-22 01:23:33,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:23:33,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184154641] [2022-11-22 01:23:33,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:23:33,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:23:33,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:23:33,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:23:33,877 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:23:33,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184154641] [2022-11-22 01:23:33,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184154641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:23:33,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:23:33,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:23:33,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095326564] [2022-11-22 01:23:33,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:23:33,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:23:33,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:23:33,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:23:33,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:23:33,979 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:23:34,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:23:34,140 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2022-11-22 01:23:34,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:23:34,144 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-22 01:23:34,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:23:34,154 INFO L225 Difference]: With dead ends: 21 [2022-11-22 01:23:34,154 INFO L226 Difference]: Without dead ends: 7 [2022-11-22 01:23:34,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:23:34,162 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 10 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:23:34,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 8 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:23:34,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2022-11-22 01:23:34,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2022-11-22 01:23:34,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:23:34,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2022-11-22 01:23:34,198 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2022-11-22 01:23:34,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:23:34,199 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2022-11-22 01:23:34,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:23:34,200 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2022-11-22 01:23:34,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 01:23:34,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:23:34,201 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-22 01:23:34,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:23:34,201 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:23:34,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:23:34,202 INFO L85 PathProgramCache]: Analyzing trace with hash 2126500833, now seen corresponding path program 1 times [2022-11-22 01:23:34,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:23:34,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453899314] [2022-11-22 01:23:34,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:23:34,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:23:34,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:23:34,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:23:34,759 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:23:34,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453899314] [2022-11-22 01:23:34,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453899314] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:23:34,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478989455] [2022-11-22 01:23:34,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:23:34,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:23:34,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50038249-60b4-4b7d-a400-907a7cdceba7/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:23:34,771 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50038249-60b4-4b7d-a400-907a7cdceba7/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:23:34,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50038249-60b4-4b7d-a400-907a7cdceba7/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 01:23:34,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:23:34,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-22 01:23:34,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:23:35,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:23:35,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:23:35,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:23:35,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478989455] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:23:35,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [723232821] [2022-11-22 01:23:35,555 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-22 01:23:35,556 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:23:35,560 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:23:35,567 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:23:35,569 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:23:35,859 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:23:36,111 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '100#(and (<= |ULTIMATE.start_main_~j~0#1| 10) (<= 1 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~sn~0#1|) (= (ite (or (= |ULTIMATE.start_main_~sn~0#1| 0) (= (* 2 |ULTIMATE.start_main_~n~0#1|) |ULTIMATE.start_main_~sn~0#1|)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (not (<= |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|)) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 01:23:36,111 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:23:36,111 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:23:36,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2022-11-22 01:23:36,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270888506] [2022-11-22 01:23:36,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:23:36,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-22 01:23:36,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:23:36,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-22 01:23:36,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2022-11-22 01:23:36,116 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 13 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:23:36,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:23:36,384 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2022-11-22 01:23:36,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 01:23:36,385 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-22 01:23:36,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:23:36,386 INFO L225 Difference]: With dead ends: 13 [2022-11-22 01:23:36,386 INFO L226 Difference]: Without dead ends: 9 [2022-11-22 01:23:36,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-11-22 01:23:36,388 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 6 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:23:36,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 21 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:23:36,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-11-22 01:23:36,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-11-22 01:23:36,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:23:36,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-22 01:23:36,395 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2022-11-22 01:23:36,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:23:36,395 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-22 01:23:36,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:23:36,396 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-22 01:23:36,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 01:23:36,397 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:23:36,397 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1] [2022-11-22 01:23:36,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50038249-60b4-4b7d-a400-907a7cdceba7/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 01:23:36,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50038249-60b4-4b7d-a400-907a7cdceba7/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:23:36,612 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:23:36,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:23:36,612 INFO L85 PathProgramCache]: Analyzing trace with hash -838455647, now seen corresponding path program 2 times [2022-11-22 01:23:36,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:23:36,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456480984] [2022-11-22 01:23:36,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:23:36,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:23:36,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:23:37,085 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:23:37,086 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:23:37,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456480984] [2022-11-22 01:23:37,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456480984] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:23:37,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681303932] [2022-11-22 01:23:37,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:23:37,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:23:37,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50038249-60b4-4b7d-a400-907a7cdceba7/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:23:37,095 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50038249-60b4-4b7d-a400-907a7cdceba7/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:23:37,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50038249-60b4-4b7d-a400-907a7cdceba7/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 01:23:37,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-22 01:23:37,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:23:37,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-22 01:23:37,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:23:37,385 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:23:37,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:23:38,394 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:23:38,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681303932] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:23:38,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2029138367] [2022-11-22 01:23:38,399 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-22 01:23:38,399 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:23:38,399 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:23:38,400 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:23:38,400 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:23:38,581 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:23:38,837 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '199#(and (<= |ULTIMATE.start_main_~j~0#1| 10) (<= 1 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~sn~0#1|) (= (ite (or (= |ULTIMATE.start_main_~sn~0#1| 0) (= (* 2 |ULTIMATE.start_main_~n~0#1|) |ULTIMATE.start_main_~sn~0#1|)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (not (<= |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|)) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 01:23:38,837 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:23:38,837 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:23:38,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-11-22 01:23:38,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746449966] [2022-11-22 01:23:38,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:23:38,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-22 01:23:38,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:23:38,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-22 01:23:38,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-11-22 01:23:38,840 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 17 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:23:39,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:23:39,336 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2022-11-22 01:23:39,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 01:23:39,337 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-22 01:23:39,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:23:39,337 INFO L225 Difference]: With dead ends: 17 [2022-11-22 01:23:39,338 INFO L226 Difference]: Without dead ends: 12 [2022-11-22 01:23:39,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=135, Invalid=621, Unknown=0, NotChecked=0, Total=756 [2022-11-22 01:23:39,340 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 10 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:23:39,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 21 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:23:39,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-11-22 01:23:39,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-11-22 01:23:39,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:23:39,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-22 01:23:39,346 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-22 01:23:39,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:23:39,347 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-22 01:23:39,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:23:39,348 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-22 01:23:39,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 01:23:39,348 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:23:39,349 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1] [2022-11-22 01:23:39,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50038249-60b4-4b7d-a400-907a7cdceba7/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 01:23:39,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50038249-60b4-4b7d-a400-907a7cdceba7/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:23:39,557 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:23:39,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:23:39,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1056551223, now seen corresponding path program 3 times [2022-11-22 01:23:39,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:23:39,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686683498] [2022-11-22 01:23:39,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:23:39,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:23:39,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 01:23:39,579 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-22 01:23:39,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 01:23:39,616 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-22 01:23:39,617 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-22 01:23:39,618 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-22 01:23:39,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 01:23:39,627 INFO L444 BasicCegarLoop]: Path program histogram: [3, 1] [2022-11-22 01:23:39,634 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 01:23:39,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:23:39 BoogieIcfgContainer [2022-11-22 01:23:39,671 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 01:23:39,671 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 01:23:39,671 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 01:23:39,672 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 01:23:39,673 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:23:33" (3/4) ... [2022-11-22 01:23:39,675 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-22 01:23:39,735 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50038249-60b4-4b7d-a400-907a7cdceba7/bin/utaipan-g80aRyZoba/witness.graphml [2022-11-22 01:23:39,736 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 01:23:39,736 INFO L158 Benchmark]: Toolchain (without parser) took 7267.54ms. Allocated memory was 190.8MB in the beginning and 230.7MB in the end (delta: 39.8MB). Free memory was 161.6MB in the beginning and 158.2MB in the end (delta: 3.4MB). Peak memory consumption was 43.7MB. Max. memory is 16.1GB. [2022-11-22 01:23:39,737 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 130.0MB. Free memory was 97.3MB in the beginning and 97.1MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 01:23:39,737 INFO L158 Benchmark]: CACSL2BoogieTranslator took 278.38ms. Allocated memory is still 190.8MB. Free memory was 161.6MB in the beginning and 151.6MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-22 01:23:39,738 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.00ms. Allocated memory is still 190.8MB. Free memory was 151.6MB in the beginning and 150.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 01:23:39,738 INFO L158 Benchmark]: Boogie Preprocessor took 23.70ms. Allocated memory is still 190.8MB. Free memory was 150.1MB in the beginning and 149.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 01:23:39,739 INFO L158 Benchmark]: RCFGBuilder took 369.02ms. Allocated memory is still 190.8MB. Free memory was 149.0MB in the beginning and 138.0MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-22 01:23:39,739 INFO L158 Benchmark]: TraceAbstraction took 6487.54ms. Allocated memory was 190.8MB in the beginning and 230.7MB in the end (delta: 39.8MB). Free memory was 137.0MB in the beginning and 160.3MB in the end (delta: -23.3MB). Peak memory consumption was 18.6MB. Max. memory is 16.1GB. [2022-11-22 01:23:39,740 INFO L158 Benchmark]: Witness Printer took 64.55ms. Allocated memory is still 230.7MB. Free memory was 160.3MB in the beginning and 158.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 01:23:39,742 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 130.0MB. Free memory was 97.3MB in the beginning and 97.1MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 278.38ms. Allocated memory is still 190.8MB. Free memory was 161.6MB in the beginning and 151.6MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.00ms. Allocated memory is still 190.8MB. Free memory was 151.6MB in the beginning and 150.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.70ms. Allocated memory is still 190.8MB. Free memory was 150.1MB in the beginning and 149.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 369.02ms. Allocated memory is still 190.8MB. Free memory was 149.0MB in the beginning and 138.0MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 6487.54ms. Allocated memory was 190.8MB in the beginning and 230.7MB in the end (delta: 39.8MB). Free memory was 137.0MB in the beginning and 160.3MB in the end (delta: -23.3MB). Peak memory consumption was 18.6MB. Max. memory is 16.1GB. * Witness Printer took 64.55ms. Allocated memory is still 230.7MB. Free memory was 160.3MB in the beginning and 158.2MB 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 - CounterExampleResult [Line: 16]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L23] int i, j=10, n=__VERIFIER_nondet_uint(), sn=0; [L23] int i, j=10, n=__VERIFIER_nondet_uint(), sn=0; VAL [j=10, n=6, n=0] [L24] COND FALSE !(n==2147483647) [L27] i=1 VAL [i=1, j=10, n=0, n=6] [L27] COND TRUE i<=n [L28] COND TRUE i