./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i --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_574c87d2-80f4-4284-a916-3cac950a8eb0/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574c87d2-80f4-4284-a916-3cac950a8eb0/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_574c87d2-80f4-4284-a916-3cac950a8eb0/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574c87d2-80f4-4284-a916-3cac950a8eb0/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574c87d2-80f4-4284-a916-3cac950a8eb0/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_574c87d2-80f4-4284-a916-3cac950a8eb0/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 e4ea247b245ebcaf5e735452e89c4110c7b9dc9b43836e98484a894783fc3462 --- 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 07:47:40,733 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:47:40,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:47:40,754 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:47:40,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:47:40,756 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:47:40,757 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:47:40,759 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:47:40,761 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:47:40,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:47:40,763 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:47:40,764 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:47:40,764 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:47:40,765 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:47:40,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:47:40,768 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:47:40,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:47:40,770 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:47:40,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:47:40,774 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:47:40,775 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:47:40,777 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:47:40,778 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:47:40,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:47:40,783 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:47:40,783 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:47:40,784 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:47:40,785 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:47:40,785 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:47:40,786 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:47:40,787 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:47:40,788 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:47:40,788 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:47:40,789 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:47:40,790 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:47:40,790 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:47:40,791 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:47:40,791 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:47:40,792 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:47:40,792 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:47:40,793 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:47:40,794 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574c87d2-80f4-4284-a916-3cac950a8eb0/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-19 07:47:40,832 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:47:40,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:47:40,833 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:47:40,833 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:47:40,834 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:47:40,834 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:47:40,834 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:47:40,835 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:47:40,835 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:47:40,835 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:47:40,835 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:47:40,836 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:47:40,836 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:47:40,836 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:47:40,836 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:47:40,837 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:47:40,837 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:47:40,837 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:47:40,838 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:47:40,838 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:47:40,838 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 07:47:40,839 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:47:40,839 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:47:40,839 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:47:40,839 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:47:40,840 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:47:40,840 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:47:40,840 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-19 07:47:40,840 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:47:40,841 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:47:40,841 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:47:40,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:47:40,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:47:40,842 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:47:40,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:47:40,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:47:40,850 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:47:40,850 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:47:40,850 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:47:40,850 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:47:40,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:47:40,851 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:47:40,851 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:47:40,851 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_574c87d2-80f4-4284-a916-3cac950a8eb0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574c87d2-80f4-4284-a916-3cac950a8eb0/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4ea247b245ebcaf5e735452e89c4110c7b9dc9b43836e98484a894783fc3462 [2022-11-19 07:47:41,071 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:47:41,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:47:41,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:47:41,095 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:47:41,096 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:47:41,097 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574c87d2-80f4-4284-a916-3cac950a8eb0/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i [2022-11-19 07:47:41,169 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574c87d2-80f4-4284-a916-3cac950a8eb0/bin/utaipan-I9t0OCRTmS/data/486369bd5/2e60bf98cd4048e8b55d5eb613b6ee43/FLAGb6fd1e5ab [2022-11-19 07:47:41,745 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:47:41,747 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574c87d2-80f4-4284-a916-3cac950a8eb0/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i [2022-11-19 07:47:41,767 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574c87d2-80f4-4284-a916-3cac950a8eb0/bin/utaipan-I9t0OCRTmS/data/486369bd5/2e60bf98cd4048e8b55d5eb613b6ee43/FLAGb6fd1e5ab [2022-11-19 07:47:41,981 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574c87d2-80f4-4284-a916-3cac950a8eb0/bin/utaipan-I9t0OCRTmS/data/486369bd5/2e60bf98cd4048e8b55d5eb613b6ee43 [2022-11-19 07:47:41,983 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:47:41,985 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:47:41,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:47:41,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:47:41,994 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:47:41,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:41" (1/1) ... [2022-11-19 07:47:41,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64c0222e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:41, skipping insertion in model container [2022-11-19 07:47:41,996 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:41" (1/1) ... [2022-11-19 07:47:42,003 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:47:42,062 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:47:42,750 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_574c87d2-80f4-4284-a916-3cac950a8eb0/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[44118,44131] [2022-11-19 07:47:42,760 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_574c87d2-80f4-4284-a916-3cac950a8eb0/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[44660,44673] [2022-11-19 07:47:42,877 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_574c87d2-80f4-4284-a916-3cac950a8eb0/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[56247,56260] [2022-11-19 07:47:42,877 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_574c87d2-80f4-4284-a916-3cac950a8eb0/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[56368,56381] [2022-11-19 07:47:42,906 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:47:42,914 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:47:42,969 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_574c87d2-80f4-4284-a916-3cac950a8eb0/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[44118,44131] [2022-11-19 07:47:42,977 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_574c87d2-80f4-4284-a916-3cac950a8eb0/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[44660,44673] [2022-11-19 07:47:43,038 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_574c87d2-80f4-4284-a916-3cac950a8eb0/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[56247,56260] [2022-11-19 07:47:43,039 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_574c87d2-80f4-4284-a916-3cac950a8eb0/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[56368,56381] [2022-11-19 07:47:43,058 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:47:43,153 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:47:43,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:43 WrapperNode [2022-11-19 07:47:43,153 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:47:43,154 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:47:43,154 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:47:43,155 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:47:43,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:43" (1/1) ... [2022-11-19 07:47:43,194 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:43" (1/1) ... [2022-11-19 07:47:43,277 INFO L138 Inliner]: procedures = 282, calls = 347, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1205 [2022-11-19 07:47:43,278 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:47:43,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:47:43,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:47:43,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:47:43,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:43" (1/1) ... [2022-11-19 07:47:43,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:43" (1/1) ... [2022-11-19 07:47:43,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:43" (1/1) ... [2022-11-19 07:47:43,319 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:43" (1/1) ... [2022-11-19 07:47:43,390 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:43" (1/1) ... [2022-11-19 07:47:43,412 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:43" (1/1) ... [2022-11-19 07:47:43,418 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:43" (1/1) ... [2022-11-19 07:47:43,438 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:43" (1/1) ... [2022-11-19 07:47:43,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:47:43,450 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:47:43,450 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:47:43,450 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:47:43,460 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:43" (1/1) ... [2022-11-19 07:47:43,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:47:43,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574c87d2-80f4-4284-a916-3cac950a8eb0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:47:43,496 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574c87d2-80f4-4284-a916-3cac950a8eb0/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:47:43,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574c87d2-80f4-4284-a916-3cac950a8eb0/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:47:43,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:47:43,544 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-19 07:47:43,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:47:43,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:47:43,544 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2022-11-19 07:47:43,545 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2022-11-19 07:47:43,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:47:43,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-19 07:47:43,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-19 07:47:43,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:47:43,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:47:43,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:47:43,546 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2022-11-19 07:47:43,546 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2022-11-19 07:47:43,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:47:43,547 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2022-11-19 07:47:43,547 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2022-11-19 07:47:43,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:47:43,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:47:43,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:47:43,925 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:47:43,927 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:47:45,399 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:47:45,858 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:47:45,859 INFO L300 CfgBuilder]: Removed 72 assume(true) statements. [2022-11-19 07:47:45,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:45 BoogieIcfgContainer [2022-11-19 07:47:45,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:47:45,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:47:45,864 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:47:45,868 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:47:45,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:47:41" (1/3) ... [2022-11-19 07:47:45,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15538a13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:45, skipping insertion in model container [2022-11-19 07:47:45,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:43" (2/3) ... [2022-11-19 07:47:45,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15538a13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:45, skipping insertion in model container [2022-11-19 07:47:45,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:45" (3/3) ... [2022-11-19 07:47:45,871 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test6-2.i [2022-11-19 07:47:45,914 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:47:45,915 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-19 07:47:45,983 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:47:45,992 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;@2cbb4e6c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:47:45,992 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-11-19 07:47:45,997 INFO L276 IsEmpty]: Start isEmpty. Operand has 176 states, 142 states have (on average 1.7394366197183098) internal successors, (247), 156 states have internal predecessors, (247), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-19 07:47:46,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 07:47:46,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:47:46,003 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 07:47:46,004 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-19 07:47:46,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:47:46,009 INFO L85 PathProgramCache]: Analyzing trace with hash 31179180, now seen corresponding path program 1 times [2022-11-19 07:47:46,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:47:46,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886469838] [2022-11-19 07:47:46,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:47:46,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:47:46,162 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:47:46,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1277822015] [2022-11-19 07:47:46,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:47:46,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:47:46,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574c87d2-80f4-4284-a916-3cac950a8eb0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:47:46,167 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574c87d2-80f4-4284-a916-3cac950a8eb0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:47:46,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574c87d2-80f4-4284-a916-3cac950a8eb0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:47:46,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:47:46,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-19 07:47:46,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:47:46,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 07:47:46,554 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-19 07:47:46,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-19 07:47:46,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-19 07:47:46,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-19 07:47:46,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2022-11-19 07:47:46,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:47:46,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:47:46,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-19 07:47:46,742 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 07:47:46,742 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:47:46,742 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:47:46,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886469838] [2022-11-19 07:47:46,743 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:47:46,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277822015] [2022-11-19 07:47:46,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277822015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:47:46,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:47:46,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:47:46,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614643836] [2022-11-19 07:47:46,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:47:46,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:47:46,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:47:46,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:47:46,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:47:46,799 INFO L87 Difference]: Start difference. First operand has 176 states, 142 states have (on average 1.7394366197183098) internal successors, (247), 156 states have internal predecessors, (247), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:47:48,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:47:48,994 INFO L93 Difference]: Finished difference Result 416 states and 678 transitions. [2022-11-19 07:47:48,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:47:48,997 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-19 07:47:48,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:47:49,006 INFO L225 Difference]: With dead ends: 416 [2022-11-19 07:47:49,007 INFO L226 Difference]: Without dead ends: 240 [2022-11-19 07:47:49,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:47:49,013 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 68 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:47:49,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 462 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-19 07:47:49,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-11-19 07:47:49,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 177. [2022-11-19 07:47:49,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 144 states have (on average 1.2430555555555556) internal successors, (179), 158 states have internal predecessors, (179), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-19 07:47:49,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 209 transitions. [2022-11-19 07:47:49,090 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 209 transitions. Word has length 4 [2022-11-19 07:47:49,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:47:49,091 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 209 transitions. [2022-11-19 07:47:49,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:47:49,091 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 209 transitions. [2022-11-19 07:47:49,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-19 07:47:49,093 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:47:49,093 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:47:49,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574c87d2-80f4-4284-a916-3cac950a8eb0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:47:49,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574c87d2-80f4-4284-a916-3cac950a8eb0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-19 07:47:49,300 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-19 07:47:49,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:47:49,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1356850095, now seen corresponding path program 1 times [2022-11-19 07:47:49,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:47:49,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830718831] [2022-11-19 07:47:49,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:47:49,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:47:49,347 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:47:49,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [135934279] [2022-11-19 07:47:49,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:47:49,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:47:49,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574c87d2-80f4-4284-a916-3cac950a8eb0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:47:49,349 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574c87d2-80f4-4284-a916-3cac950a8eb0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:47:49,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574c87d2-80f4-4284-a916-3cac950a8eb0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:47:49,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:47:49,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 07:47:49,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:47:49,687 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 07:47:49,687 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:47:49,688 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:47:49,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830718831] [2022-11-19 07:47:49,688 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:47:49,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135934279] [2022-11-19 07:47:49,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135934279] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:47:49,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:47:49,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:47:49,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212819994] [2022-11-19 07:47:49,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:47:49,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:47:49,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:47:49,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:47:49,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:47:49,692 INFO L87 Difference]: Start difference. First operand 177 states and 209 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 07:47:51,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:47:51,636 INFO L93 Difference]: Finished difference Result 311 states and 367 transitions. [2022-11-19 07:47:51,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:47:51,639 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 18 [2022-11-19 07:47:51,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:47:51,641 INFO L225 Difference]: With dead ends: 311 [2022-11-19 07:47:51,642 INFO L226 Difference]: Without dead ends: 309 [2022-11-19 07:47:51,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:47:51,643 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 139 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:47:51,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 531 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-19 07:47:51,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-11-19 07:47:51,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 299. [2022-11-19 07:47:51,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 255 states have (on average 1.2352941176470589) internal successors, (315), 270 states have internal predecessors, (315), 24 states have call successors, (24), 7 states have call predecessors, (24), 6 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2022-11-19 07:47:51,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 363 transitions. [2022-11-19 07:47:51,670 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 363 transitions. Word has length 18 [2022-11-19 07:47:51,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:47:51,670 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 363 transitions. [2022-11-19 07:47:51,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 07:47:51,671 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 363 transitions. [2022-11-19 07:47:51,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-19 07:47:51,672 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:47:51,672 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:47:51,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574c87d2-80f4-4284-a916-3cac950a8eb0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-19 07:47:51,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574c87d2-80f4-4284-a916-3cac950a8eb0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:47:51,878 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-19 07:47:51,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:47:51,879 INFO L85 PathProgramCache]: Analyzing trace with hash 887320049, now seen corresponding path program 1 times [2022-11-19 07:47:51,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:47:51,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954070613] [2022-11-19 07:47:51,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:47:51,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:47:51,914 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:47:51,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [103943485] [2022-11-19 07:47:51,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:47:51,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:47:51,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574c87d2-80f4-4284-a916-3cac950a8eb0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:47:51,916 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574c87d2-80f4-4284-a916-3cac950a8eb0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:47:51,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574c87d2-80f4-4284-a916-3cac950a8eb0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:47:52,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:47:52,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 07:47:52,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:47:52,304 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 07:47:52,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:47:52,305 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:47:52,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954070613] [2022-11-19 07:47:52,306 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:47:52,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103943485] [2022-11-19 07:47:52,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103943485] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:47:52,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:47:52,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:47:52,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328075046] [2022-11-19 07:47:52,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:47:52,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:47:52,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:47:52,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:47:52,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:47:52,317 INFO L87 Difference]: Start difference. First operand 299 states and 363 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 07:47:53,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:47:53,804 INFO L93 Difference]: Finished difference Result 537 states and 655 transitions. [2022-11-19 07:47:53,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:47:53,808 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 19 [2022-11-19 07:47:53,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:47:53,811 INFO L225 Difference]: With dead ends: 537 [2022-11-19 07:47:53,811 INFO L226 Difference]: Without dead ends: 535 [2022-11-19 07:47:53,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:47:53,813 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 174 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:47:53,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 538 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-19 07:47:53,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2022-11-19 07:47:53,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 524. [2022-11-19 07:47:53,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 459 states have (on average 1.2352941176470589) internal successors, (567), 477 states have internal predecessors, (567), 41 states have call successors, (41), 13 states have call predecessors, (41), 10 states have return successors, (44), 34 states have call predecessors, (44), 41 states have call successors, (44) [2022-11-19 07:47:53,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 652 transitions. [2022-11-19 07:47:53,861 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 652 transitions. Word has length 19 [2022-11-19 07:47:53,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:47:53,862 INFO L495 AbstractCegarLoop]: Abstraction has 524 states and 652 transitions. [2022-11-19 07:47:53,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 07:47:53,862 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 652 transitions. [2022-11-19 07:47:53,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-19 07:47:53,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:47:53,864 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:47:53,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574c87d2-80f4-4284-a916-3cac950a8eb0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:47:54,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574c87d2-80f4-4284-a916-3cac950a8eb0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-19 07:47:54,075 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-19 07:47:54,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:47:54,076 INFO L85 PathProgramCache]: Analyzing trace with hash 310210136, now seen corresponding path program 1 times [2022-11-19 07:47:54,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:47:54,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90221279] [2022-11-19 07:47:54,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:47:54,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:47:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:47:54,548 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 07:47:54,548 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:47:54,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90221279] [2022-11-19 07:47:54,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90221279] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:47:54,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:47:54,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:47:54,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992674309] [2022-11-19 07:47:54,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:47:54,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:47:54,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:47:54,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:47:54,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:47:54,551 INFO L87 Difference]: Start difference. First operand 524 states and 652 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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 07:47:56,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:47:56,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:47:56,965 INFO L93 Difference]: Finished difference Result 871 states and 1093 transitions. [2022-11-19 07:47:56,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:47:56,967 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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 24 [2022-11-19 07:47:56,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:47:56,971 INFO L225 Difference]: With dead ends: 871 [2022-11-19 07:47:56,971 INFO L226 Difference]: Without dead ends: 702 [2022-11-19 07:47:56,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:47:56,974 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 67 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:47:56,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 489 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-19 07:47:56,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2022-11-19 07:47:57,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 524. [2022-11-19 07:47:57,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 459 states have (on average 1.233115468409586) internal successors, (566), 477 states have internal predecessors, (566), 41 states have call successors, (41), 13 states have call predecessors, (41), 10 states have return successors, (44), 34 states have call predecessors, (44), 41 states have call successors, (44) [2022-11-19 07:47:57,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 651 transitions. [2022-11-19 07:47:57,013 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 651 transitions. Word has length 24 [2022-11-19 07:47:57,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:47:57,014 INFO L495 AbstractCegarLoop]: Abstraction has 524 states and 651 transitions. [2022-11-19 07:47:57,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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 07:47:57,014 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 651 transitions. [2022-11-19 07:47:57,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 07:47:57,015 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:47:57,015 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:47:57,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:47:57,016 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting alt_bzeroErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-19 07:47:57,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:47:57,016 INFO L85 PathProgramCache]: Analyzing trace with hash 194511926, now seen corresponding path program 1 times [2022-11-19 07:47:57,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:47:57,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359182904] [2022-11-19 07:47:57,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:47:57,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:47:57,047 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:47:57,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1952636891] [2022-11-19 07:47:57,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:47:57,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:47:57,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574c87d2-80f4-4284-a916-3cac950a8eb0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:47:57,049 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574c87d2-80f4-4284-a916-3cac950a8eb0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:47:57,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574c87d2-80f4-4284-a916-3cac950a8eb0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:47:57,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:47:57,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:47:57,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:47:57,406 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 07:47:57,411 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:47:57,411 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:47:57,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359182904] [2022-11-19 07:47:57,411 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:47:57,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952636891] [2022-11-19 07:47:57,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952636891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:47:57,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:47:57,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 07:47:57,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101445170] [2022-11-19 07:47:57,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:47:57,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:47:57,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:47:57,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:47:57,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:47:57,414 INFO L87 Difference]: Start difference. First operand 524 states and 651 transitions. Second operand has 3 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:47:58,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:47:58,958 INFO L93 Difference]: Finished difference Result 550 states and 671 transitions. [2022-11-19 07:47:58,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:47:58,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-11-19 07:47:58,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:47:58,965 INFO L225 Difference]: With dead ends: 550 [2022-11-19 07:47:58,965 INFO L226 Difference]: Without dead ends: 549 [2022-11-19 07:47:58,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 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 07:47:58,967 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 144 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:47:58,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 361 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-19 07:47:58,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-11-19 07:47:58,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 539. [2022-11-19 07:47:58,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 469 states have (on average 1.2302771855010661) internal successors, (577), 488 states have internal predecessors, (577), 44 states have call successors, (44), 15 states have call predecessors, (44), 12 states have return successors, (47), 37 states have call predecessors, (47), 44 states have call successors, (47) [2022-11-19 07:47:58,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 668 transitions. [2022-11-19 07:47:58,999 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 668 transitions. Word has length 27 [2022-11-19 07:47:58,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:47:59,000 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 668 transitions. [2022-11-19 07:47:59,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:47:59,000 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 668 transitions. [2022-11-19 07:47:59,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-19 07:47:59,001 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:47:59,001 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:47:59,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574c87d2-80f4-4284-a916-3cac950a8eb0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:47:59,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574c87d2-80f4-4284-a916-3cac950a8eb0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:47:59,208 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting alt_bzeroErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-19 07:47:59,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:47:59,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1734902471, now seen corresponding path program 1 times [2022-11-19 07:47:59,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:47:59,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784666425] [2022-11-19 07:47:59,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:47:59,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:47:59,234 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:47:59,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [683813515] [2022-11-19 07:47:59,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:47:59,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:47:59,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574c87d2-80f4-4284-a916-3cac950a8eb0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:47:59,236 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574c87d2-80f4-4284-a916-3cac950a8eb0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:47:59,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574c87d2-80f4-4284-a916-3cac950a8eb0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 07:47:59,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:47:59,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:47:59,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:47:59,640 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 07:47:59,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:47:59,640 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:47:59,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784666425] [2022-11-19 07:47:59,640 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:47:59,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683813515] [2022-11-19 07:47:59,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683813515] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:47:59,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:47:59,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 07:47:59,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620787461] [2022-11-19 07:47:59,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:47:59,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:47:59,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:47:59,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:47:59,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:47:59,643 INFO L87 Difference]: Start difference. First operand 539 states and 668 transitions. Second operand has 3 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:48:00,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:48:00,812 INFO L93 Difference]: Finished difference Result 539 states and 668 transitions. [2022-11-19 07:48:00,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:48:00,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-11-19 07:48:00,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:48:00,818 INFO L225 Difference]: With dead ends: 539 [2022-11-19 07:48:00,818 INFO L226 Difference]: Without dead ends: 538 [2022-11-19 07:48:00,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 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 07:48:00,819 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 175 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:48:00,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 173 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-19 07:48:00,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-11-19 07:48:00,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2022-11-19 07:48:00,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 469 states have (on average 1.2260127931769722) internal successors, (575), 487 states have internal predecessors, (575), 44 states have call successors, (44), 15 states have call predecessors, (44), 12 states have return successors, (47), 37 states have call predecessors, (47), 44 states have call successors, (47) [2022-11-19 07:48:00,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 666 transitions. [2022-11-19 07:48:00,850 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 666 transitions. Word has length 28 [2022-11-19 07:48:00,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:48:00,851 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 666 transitions. [2022-11-19 07:48:00,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:48:00,855 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 666 transitions. [2022-11-19 07:48:00,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-19 07:48:00,862 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:48:00,863 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:48:00,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574c87d2-80f4-4284-a916-3cac950a8eb0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 07:48:01,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574c87d2-80f4-4284-a916-3cac950a8eb0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:48:01,070 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-19 07:48:01,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:48:01,070 INFO L85 PathProgramCache]: Analyzing trace with hash 407611559, now seen corresponding path program 1 times [2022-11-19 07:48:01,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:48:01,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105173303] [2022-11-19 07:48:01,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:48:01,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:48:01,189 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:48:01,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [665563360] [2022-11-19 07:48:01,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:48:01,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:48:01,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574c87d2-80f4-4284-a916-3cac950a8eb0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:48:01,191 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574c87d2-80f4-4284-a916-3cac950a8eb0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:48:01,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574c87d2-80f4-4284-a916-3cac950a8eb0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 07:48:01,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:48:01,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 1600 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 07:48:01,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:48:02,025 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 07:48:02,025 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:48:02,026 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:48:02,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105173303] [2022-11-19 07:48:02,026 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:48:02,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665563360] [2022-11-19 07:48:02,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665563360] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:48:02,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:48:02,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:48:02,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822252423] [2022-11-19 07:48:02,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:48:02,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:48:02,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:48:02,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:48:02,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:48:02,029 INFO L87 Difference]: Start difference. First operand 538 states and 666 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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 07:48:04,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:48:04,423 INFO L93 Difference]: Finished difference Result 1000 states and 1234 transitions. [2022-11-19 07:48:04,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:48:04,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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 28 [2022-11-19 07:48:04,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:48:04,429 INFO L225 Difference]: With dead ends: 1000 [2022-11-19 07:48:04,429 INFO L226 Difference]: Without dead ends: 467 [2022-11-19 07:48:04,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 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 07:48:04,432 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 68 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:48:04,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 328 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-19 07:48:04,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2022-11-19 07:48:04,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 415. [2022-11-19 07:48:04,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 363 states have (on average 1.2148760330578512) internal successors, (441), 379 states have internal predecessors, (441), 30 states have call successors, (30), 11 states have call predecessors, (30), 9 states have return successors, (33), 26 states have call predecessors, (33), 30 states have call successors, (33) [2022-11-19 07:48:04,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 504 transitions. [2022-11-19 07:48:04,466 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 504 transitions. Word has length 28 [2022-11-19 07:48:04,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:48:04,468 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 504 transitions. [2022-11-19 07:48:04,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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 07:48:04,468 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 504 transitions. [2022-11-19 07:48:04,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-19 07:48:04,472 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:48:04,472 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:48:04,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574c87d2-80f4-4284-a916-3cac950a8eb0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-19 07:48:04,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574c87d2-80f4-4284-a916-3cac950a8eb0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:48:04,681 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-19 07:48:04,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:48:04,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1908132634, now seen corresponding path program 1 times [2022-11-19 07:48:04,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:48:04,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214736580] [2022-11-19 07:48:04,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:48:04,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:48:04,719 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:48:04,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [223256784] [2022-11-19 07:48:04,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:48:04,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:48:04,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574c87d2-80f4-4284-a916-3cac950a8eb0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:48:04,722 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574c87d2-80f4-4284-a916-3cac950a8eb0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:48:04,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_574c87d2-80f4-4284-a916-3cac950a8eb0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 07:48:05,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:48:05,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 07:48:05,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:48:05,358 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 07:48:05,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:48:05,589 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 07:48:05,590 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:48:05,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214736580] [2022-11-19 07:48:05,590 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:48:05,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223256784] [2022-11-19 07:48:05,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223256784] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:48:05,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [810417275] [2022-11-19 07:48:05,613 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2022-11-19 07:48:05,613 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:48:05,617 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:48:05,623 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:48:05,623 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:48:05,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-19 07:48:05,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-19 07:48:05,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:05,724 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-19 07:48:05,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 38 [2022-11-19 07:48:05,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:05,744 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:48:05,774 INFO L321 Elim1Store]: treesize reduction 31, result has 35.4 percent of original size [2022-11-19 07:48:05,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 93 [2022-11-19 07:48:05,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-19 07:48:05,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:05,824 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:48:05,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 21 [2022-11-19 07:48:05,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:48:05,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:05,888 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-19 07:48:05,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-11-19 07:48:05,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:05,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:05,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:05,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:05,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:06,022 INFO L321 Elim1Store]: treesize reduction 34, result has 47.7 percent of original size [2022-11-19 07:48:06,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 93 treesize of output 105 [2022-11-19 07:48:06,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-19 07:48:06,097 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:48:06,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 87 [2022-11-19 07:48:06,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:06,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:06,212 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-19 07:48:06,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 61 [2022-11-19 07:48:06,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-19 07:48:06,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-19 07:48:06,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:06,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:06,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 40 [2022-11-19 07:48:06,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 07:48:06,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 07:48:06,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:06,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:06,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:06,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:06,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 345 treesize of output 269 [2022-11-19 07:48:06,481 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:48:06,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:06,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 34 [2022-11-19 07:48:07,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-19 07:48:07,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:07,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:07,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:07,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:07,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 9897273 treesize of output 8253295 [2022-11-19 07:48:07,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:07,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:07,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:07,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:07,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 340 treesize of output 272 [2022-11-19 07:48:07,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:07,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:07,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:07,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:07,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:07,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:07,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:07,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:07,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:07,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:07,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:07,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:07,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:07,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:07,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:07,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 28 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 8253076 treesize of output 5376288 [2022-11-19 07:48:07,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-19 07:48:07,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-19 07:48:08,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-19 07:48:08,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:08,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:08,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:08,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:08,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 93836963 treesize of output 72466133 [2022-11-19 07:48:08,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:08,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:08,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:08,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:08,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 92604037 treesize of output 72466145 [2022-11-19 07:48:08,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:08,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:08,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:08,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:08,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:08,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:08,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:08,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:08,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:08,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:08,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:08,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:08,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:08,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:08,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:08,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:08,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:08,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:08,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:08,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:08,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:08,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:08,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:08,471 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:48:08,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 36 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 8664067 treesize of output 6198246 [2022-11-19 07:48:08,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2022-11-19 07:48:08,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-19 07:48:08,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2022-11-19 07:48:08,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-19 07:48:08,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-19 07:48:09,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:09,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:09,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:09,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:09,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 93836992 treesize of output 72466144 [2022-11-19 07:48:09,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:09,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:09,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:09,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:09,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:09,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:09,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:09,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:09,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:09,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:09,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:09,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:09,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:09,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:09,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:48:09,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 8253064 treesize of output 5787194 [2022-11-19 07:48:09,377 INFO L173 IndexEqualityManager]: detected equality via solver