./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V --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 ac848265e1daab3ca0f2905a3d0d6fdafaee38399ca7123ad8517babc999ef80 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:17:22,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:17:22,969 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:17:23,030 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:17:23,031 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:17:23,035 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:17:23,037 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:17:23,041 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:17:23,044 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:17:23,051 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:17:23,052 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:17:23,054 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:17:23,055 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:17:23,057 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:17:23,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:17:23,067 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:17:23,070 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:17:23,072 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:17:23,074 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:17:23,081 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:17:23,083 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:17:23,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:17:23,088 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:17:23,089 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:17:23,096 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:17:23,097 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:17:23,097 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:17:23,100 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:17:23,100 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:17:23,102 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:17:23,102 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:17:23,103 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:17:23,105 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:17:23,106 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:17:23,108 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:17:23,108 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:17:23,109 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:17:23,110 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:17:23,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:17:23,111 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:17:23,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:17:23,112 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-11-23 02:17:23,160 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:17:23,161 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:17:23,161 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:17:23,161 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:17:23,169 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:17:23,169 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:17:23,169 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:17:23,170 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:17:23,170 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:17:23,170 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:17:23,171 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:17:23,172 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:17:23,172 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:17:23,172 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:17:23,172 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:17:23,173 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:17:23,173 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:17:23,173 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:17:23,174 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:17:23,175 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:17:23,175 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 02:17:23,175 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:17:23,175 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:17:23,176 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:17:23,176 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:17:23,176 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:17:23,178 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:17:23,178 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-23 02:17:23,179 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:17:23,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:17:23,179 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:17:23,179 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:17:23,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:17:23,180 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:17:23,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:17:23,181 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:17:23,181 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:17:23,181 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:17:23,181 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:17:23,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:17:23,182 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:17:23,182 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:17:23,182 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:17:23,182 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac848265e1daab3ca0f2905a3d0d6fdafaee38399ca7123ad8517babc999ef80 [2021-11-23 02:17:23,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:17:23,462 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:17:23,464 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:17:23,466 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:17:23,466 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:17:23,468 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i [2021-11-23 02:17:23,552 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/data/63f03b1c9/de9c6ec7e5004c78b100c3a3425193a6/FLAGf16441164 [2021-11-23 02:17:24,223 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:17:24,224 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i [2021-11-23 02:17:24,254 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/data/63f03b1c9/de9c6ec7e5004c78b100c3a3425193a6/FLAGf16441164 [2021-11-23 02:17:24,400 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/data/63f03b1c9/de9c6ec7e5004c78b100c3a3425193a6 [2021-11-23 02:17:24,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:17:24,403 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:17:24,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:17:24,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:17:24,409 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:17:24,410 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:17:24" (1/1) ... [2021-11-23 02:17:24,411 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dbe4321 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:24, skipping insertion in model container [2021-11-23 02:17:24,411 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:17:24" (1/1) ... [2021-11-23 02:17:24,418 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:17:24,473 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:17:25,083 WARN L230 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_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[44118,44131] [2021-11-23 02:17:25,092 WARN L230 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_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[44660,44673] [2021-11-23 02:17:25,219 WARN L230 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_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[56247,56260] [2021-11-23 02:17:25,223 WARN L230 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_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[56368,56381] [2021-11-23 02:17:25,238 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:17:25,246 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:17:25,327 WARN L230 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_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[44118,44131] [2021-11-23 02:17:25,330 WARN L230 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_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[44660,44673] [2021-11-23 02:17:25,433 WARN L230 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_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[56247,56260] [2021-11-23 02:17:25,433 WARN L230 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_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[56368,56381] [2021-11-23 02:17:25,437 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:17:25,519 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:17:25,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:25 WrapperNode [2021-11-23 02:17:25,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:17:25,521 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:17:25,521 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:17:25,522 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:17:25,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:25" (1/1) ... [2021-11-23 02:17:25,600 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:25" (1/1) ... [2021-11-23 02:17:25,692 INFO L137 Inliner]: procedures = 282, calls = 294, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1050 [2021-11-23 02:17:25,693 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:17:25,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:17:25,696 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:17:25,696 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:17:25,704 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:25" (1/1) ... [2021-11-23 02:17:25,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:25" (1/1) ... [2021-11-23 02:17:25,719 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:25" (1/1) ... [2021-11-23 02:17:25,719 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:25" (1/1) ... [2021-11-23 02:17:25,777 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:25" (1/1) ... [2021-11-23 02:17:25,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:25" (1/1) ... [2021-11-23 02:17:25,815 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:25" (1/1) ... [2021-11-23 02:17:25,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:17:25,836 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:17:25,837 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:17:25,837 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:17:25,838 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:25" (1/1) ... [2021-11-23 02:17:25,845 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:17:25,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:17:25,869 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:17:25,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:17:25,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:17:25,911 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-23 02:17:25,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:17:25,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:17:25,911 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2021-11-23 02:17:25,912 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2021-11-23 02:17:25,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:17:25,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 02:17:25,912 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 02:17:25,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:17:25,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:17:25,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:17:25,912 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2021-11-23 02:17:25,913 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2021-11-23 02:17:25,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:17:25,913 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2021-11-23 02:17:25,913 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2021-11-23 02:17:25,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:17:25,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:17:25,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:17:26,313 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:17:26,315 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:17:27,272 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:17:27,676 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:17:27,676 INFO L301 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-23 02:17:27,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:17:27 BoogieIcfgContainer [2021-11-23 02:17:27,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:17:27,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:17:27,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:17:27,685 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:17:27,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:17:24" (1/3) ... [2021-11-23 02:17:27,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a4337c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:17:27, skipping insertion in model container [2021-11-23 02:17:27,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:25" (2/3) ... [2021-11-23 02:17:27,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a4337c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:17:27, skipping insertion in model container [2021-11-23 02:17:27,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:17:27" (3/3) ... [2021-11-23 02:17:27,688 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test6-1.i [2021-11-23 02:17:27,693 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:17:27,694 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-11-23 02:17:27,743 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:17:27,750 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:17:27,750 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-11-23 02:17:27,772 INFO L276 IsEmpty]: Start isEmpty. Operand has 158 states, 126 states have (on average 1.746031746031746) internal successors, (220), 140 states have internal predecessors, (220), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-23 02:17:27,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-23 02:17:27,775 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:17:27,776 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-23 02:17:27,776 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-23 02:17:27,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:17:27,782 INFO L85 PathProgramCache]: Analyzing trace with hash 27392344, now seen corresponding path program 1 times [2021-11-23 02:17:27,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:17:27,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216592968] [2021-11-23 02:17:27,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:27,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:17:27,903 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:17:27,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [4342223] [2021-11-23 02:17:27,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:27,904 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:17:27,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:17:27,906 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:17:27,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:17:28,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:17:28,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 02:17:28,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:17:28,202 INFO L354 Elim1Store]: treesize reduction 31, result has 35.4 percent of original size [2021-11-23 02:17:28,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 39 treesize of output 50 [2021-11-23 02:17:28,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 50 treesize of output 49 [2021-11-23 02:17:28,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2021-11-23 02:17:28,366 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 02:17:28,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2021-11-23 02:17:40,502 WARN L227 SmtUtils]: Spent 12.11s on a formula simplification. DAG size of input: 24 DAG size of output: 22 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:17:40,598 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:17:40,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 46 [2021-11-23 02:17:40,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 10 [2021-11-23 02:17:40,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:17:40,644 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:17:40,644 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:17:40,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216592968] [2021-11-23 02:17:40,645 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:17:40,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4342223] [2021-11-23 02:17:40,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4342223] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:17:40,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:17:40,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:17:40,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715999829] [2021-11-23 02:17:40,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:17:40,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:17:40,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:17:40,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:17:40,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:17:40,685 INFO L87 Difference]: Start difference. First operand has 158 states, 126 states have (on average 1.746031746031746) internal successors, (220), 140 states have internal predecessors, (220), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) 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) [2021-11-23 02:17:41,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:17:41,826 INFO L93 Difference]: Finished difference Result 318 states and 501 transitions. [2021-11-23 02:17:41,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:17:41,833 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 [2021-11-23 02:17:41,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:17:41,841 INFO L225 Difference]: With dead ends: 318 [2021-11-23 02:17:41,844 INFO L226 Difference]: Without dead ends: 154 [2021-11-23 02:17:41,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:17:41,860 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 2 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:17:41,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 434 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 55 Unchecked, 1.1s Time] [2021-11-23 02:17:41,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-11-23 02:17:41,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 153. [2021-11-23 02:17:41,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 125 states have (on average 1.256) internal successors, (157), 139 states have internal predecessors, (157), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-23 02:17:41,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 177 transitions. [2021-11-23 02:17:41,950 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 177 transitions. Word has length 4 [2021-11-23 02:17:41,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:17:41,951 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 177 transitions. [2021-11-23 02:17:41,952 INFO L471 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) [2021-11-23 02:17:41,954 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 177 transitions. [2021-11-23 02:17:41,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 02:17:41,956 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:17:41,956 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:17:41,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:17:42,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:17:42,174 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-23 02:17:42,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:17:42,175 INFO L85 PathProgramCache]: Analyzing trace with hash -646465482, now seen corresponding path program 1 times [2021-11-23 02:17:42,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:17:42,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258596561] [2021-11-23 02:17:42,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:42,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:17:42,232 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:17:42,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [35639120] [2021-11-23 02:17:42,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:42,232 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:17:42,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:17:42,236 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:17:42,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:17:42,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:17:42,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:17:42,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:17:42,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:17:42,520 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:17:42,521 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:17:42,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258596561] [2021-11-23 02:17:42,521 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:17:42,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35639120] [2021-11-23 02:17:42,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35639120] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:17:42,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:17:42,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:17:42,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290234901] [2021-11-23 02:17:42,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:17:42,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:17:42,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:17:42,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:17:42,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:17:42,524 INFO L87 Difference]: Start difference. First operand 153 states and 177 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) [2021-11-23 02:17:43,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:17:43,694 INFO L93 Difference]: Finished difference Result 261 states and 302 transitions. [2021-11-23 02:17:43,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:17:43,707 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 [2021-11-23 02:17:43,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:17:43,711 INFO L225 Difference]: With dead ends: 261 [2021-11-23 02:17:43,711 INFO L226 Difference]: Without dead ends: 259 [2021-11-23 02:17:43,712 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:17:43,713 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 106 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:17:43,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 443 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-23 02:17:43,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-11-23 02:17:43,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 249. [2021-11-23 02:17:43,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 216 states have (on average 1.25) internal successors, (270), 231 states have internal predecessors, (270), 14 states have call successors, (14), 6 states have call predecessors, (14), 5 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-23 02:17:43,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 298 transitions. [2021-11-23 02:17:43,737 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 298 transitions. Word has length 18 [2021-11-23 02:17:43,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:17:43,738 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 298 transitions. [2021-11-23 02:17:43,738 INFO L471 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) [2021-11-23 02:17:43,738 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 298 transitions. [2021-11-23 02:17:43,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 02:17:43,739 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:17:43,739 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:17:43,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:17:43,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:17:43,963 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-23 02:17:43,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:17:43,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1434406572, now seen corresponding path program 1 times [2021-11-23 02:17:43,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:17:43,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956152759] [2021-11-23 02:17:43,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:43,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:17:44,002 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:17:44,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1460231635] [2021-11-23 02:17:44,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:44,003 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:17:44,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:17:44,015 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:17:44,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:17:44,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:17:44,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:17:44,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:17:44,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:17:44,267 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:17:44,268 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:17:44,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956152759] [2021-11-23 02:17:44,268 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:17:44,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460231635] [2021-11-23 02:17:44,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460231635] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:17:44,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:17:44,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:17:44,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753673888] [2021-11-23 02:17:44,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:17:44,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:17:44,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:17:44,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:17:44,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:17:44,271 INFO L87 Difference]: Start difference. First operand 249 states and 298 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) [2021-11-23 02:17:45,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:17:45,421 INFO L93 Difference]: Finished difference Result 441 states and 532 transitions. [2021-11-23 02:17:45,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:17:45,426 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 [2021-11-23 02:17:45,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:17:45,429 INFO L225 Difference]: With dead ends: 441 [2021-11-23 02:17:45,429 INFO L226 Difference]: Without dead ends: 439 [2021-11-23 02:17:45,430 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:17:45,431 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 147 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:17:45,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 451 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-23 02:17:45,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-11-23 02:17:45,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 428. [2021-11-23 02:17:45,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 384 states have (on average 1.25) internal successors, (480), 400 states have internal predecessors, (480), 23 states have call successors, (23), 10 states have call predecessors, (23), 7 states have return successors, (26), 18 states have call predecessors, (26), 23 states have call successors, (26) [2021-11-23 02:17:45,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 529 transitions. [2021-11-23 02:17:45,466 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 529 transitions. Word has length 19 [2021-11-23 02:17:45,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:17:45,467 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 529 transitions. [2021-11-23 02:17:45,467 INFO L471 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) [2021-11-23 02:17:45,467 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 529 transitions. [2021-11-23 02:17:45,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 02:17:45,469 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:17:45,469 INFO L514 BasicCegarLoop]: 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] [2021-11-23 02:17:45,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:17:45,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:17:45,679 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-23 02:17:45,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:17:45,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1558573003, now seen corresponding path program 1 times [2021-11-23 02:17:45,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:17:45,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622794651] [2021-11-23 02:17:45,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:45,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:17:45,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:17:45,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:17:45,759 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:17:45,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622794651] [2021-11-23 02:17:45,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622794651] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:17:45,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:17:45,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:17:45,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378336038] [2021-11-23 02:17:45,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:17:45,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:17:45,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:17:45,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:17:45,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:17:45,761 INFO L87 Difference]: Start difference. First operand 428 states and 529 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) [2021-11-23 02:17:46,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:17:46,810 INFO L93 Difference]: Finished difference Result 682 states and 842 transitions. [2021-11-23 02:17:46,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:17:46,814 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 [2021-11-23 02:17:46,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:17:46,818 INFO L225 Difference]: With dead ends: 682 [2021-11-23 02:17:46,819 INFO L226 Difference]: Without dead ends: 562 [2021-11-23 02:17:46,819 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:17:46,821 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 56 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:17:46,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 412 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-23 02:17:46,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-11-23 02:17:46,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 428. [2021-11-23 02:17:46,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 384 states have (on average 1.2473958333333333) internal successors, (479), 400 states have internal predecessors, (479), 23 states have call successors, (23), 10 states have call predecessors, (23), 7 states have return successors, (26), 18 states have call predecessors, (26), 23 states have call successors, (26) [2021-11-23 02:17:46,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 528 transitions. [2021-11-23 02:17:46,852 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 528 transitions. Word has length 24 [2021-11-23 02:17:46,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:17:46,853 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 528 transitions. [2021-11-23 02:17:46,853 INFO L471 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) [2021-11-23 02:17:46,853 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 528 transitions. [2021-11-23 02:17:46,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 02:17:46,854 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:17:46,854 INFO L514 BasicCegarLoop]: 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] [2021-11-23 02:17:46,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:17:46,855 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting alt_bzeroErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-23 02:17:46,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:17:46,855 INFO L85 PathProgramCache]: Analyzing trace with hash -2115465486, now seen corresponding path program 1 times [2021-11-23 02:17:46,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:17:46,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205437342] [2021-11-23 02:17:46,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:46,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:17:46,875 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:17:46,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1898376787] [2021-11-23 02:17:46,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:46,876 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:17:46,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:17:46,891 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:17:46,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 02:17:47,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:17:47,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 02:17:47,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:17:47,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:17:47,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:17:47,160 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:17:47,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205437342] [2021-11-23 02:17:47,160 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:17:47,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898376787] [2021-11-23 02:17:47,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898376787] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:17:47,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:17:47,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-23 02:17:47,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248538607] [2021-11-23 02:17:47,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:17:47,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:17:47,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:17:47,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:17:47,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:17:47,163 INFO L87 Difference]: Start difference. First operand 428 states and 528 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) [2021-11-23 02:17:47,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:17:47,992 INFO L93 Difference]: Finished difference Result 454 states and 548 transitions. [2021-11-23 02:17:47,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:17:47,996 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 [2021-11-23 02:17:47,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:17:47,999 INFO L225 Difference]: With dead ends: 454 [2021-11-23 02:17:47,999 INFO L226 Difference]: Without dead ends: 453 [2021-11-23 02:17:48,000 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:17:48,001 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 112 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:17:48,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 304 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-23 02:17:48,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2021-11-23 02:17:48,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 443. [2021-11-23 02:17:48,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 394 states have (on average 1.2436548223350254) internal successors, (490), 411 states have internal predecessors, (490), 26 states have call successors, (26), 12 states have call predecessors, (26), 9 states have return successors, (29), 21 states have call predecessors, (29), 26 states have call successors, (29) [2021-11-23 02:17:48,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 545 transitions. [2021-11-23 02:17:48,029 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 545 transitions. Word has length 27 [2021-11-23 02:17:48,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:17:48,029 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 545 transitions. [2021-11-23 02:17:48,030 INFO L471 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) [2021-11-23 02:17:48,030 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 545 transitions. [2021-11-23 02:17:48,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 02:17:48,031 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:17:48,031 INFO L514 BasicCegarLoop]: 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] [2021-11-23 02:17:48,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 02:17:48,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:17:48,247 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting alt_bzeroErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-23 02:17:48,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:17:48,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1154920565, now seen corresponding path program 1 times [2021-11-23 02:17:48,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:17:48,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958207353] [2021-11-23 02:17:48,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:48,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:17:48,277 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:17:48,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1497516024] [2021-11-23 02:17:48,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:48,281 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:17:48,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:17:48,282 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:17:48,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 02:17:48,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:17:48,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 02:17:48,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:17:48,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:17:48,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:17:48,557 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:17:48,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958207353] [2021-11-23 02:17:48,558 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:17:48,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497516024] [2021-11-23 02:17:48,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497516024] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:17:48,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:17:48,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-23 02:17:48,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090261109] [2021-11-23 02:17:48,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:17:48,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:17:48,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:17:48,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:17:48,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:17:48,562 INFO L87 Difference]: Start difference. First operand 443 states and 545 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) [2021-11-23 02:17:48,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:17:48,973 INFO L93 Difference]: Finished difference Result 443 states and 545 transitions. [2021-11-23 02:17:48,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:17:48,978 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 [2021-11-23 02:17:48,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:17:48,981 INFO L225 Difference]: With dead ends: 443 [2021-11-23 02:17:48,982 INFO L226 Difference]: Without dead ends: 442 [2021-11-23 02:17:48,982 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:17:48,983 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 143 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:17:48,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 147 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 02:17:48,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2021-11-23 02:17:49,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 442. [2021-11-23 02:17:49,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 394 states have (on average 1.2385786802030456) internal successors, (488), 410 states have internal predecessors, (488), 26 states have call successors, (26), 12 states have call predecessors, (26), 9 states have return successors, (29), 21 states have call predecessors, (29), 26 states have call successors, (29) [2021-11-23 02:17:49,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 543 transitions. [2021-11-23 02:17:49,010 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 543 transitions. Word has length 28 [2021-11-23 02:17:49,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:17:49,010 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 543 transitions. [2021-11-23 02:17:49,011 INFO L471 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) [2021-11-23 02:17:49,011 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 543 transitions. [2021-11-23 02:17:49,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 02:17:49,012 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:17:49,012 INFO L514 BasicCegarLoop]: 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] [2021-11-23 02:17:49,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 02:17:49,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-23 02:17:49,239 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-23 02:17:49,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:17:49,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1356353724, now seen corresponding path program 1 times [2021-11-23 02:17:49,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:17:49,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488005176] [2021-11-23 02:17:49,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:49,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:17:49,256 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:17:49,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [53536594] [2021-11-23 02:17:49,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:49,256 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:17:49,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:17:49,268 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:17:49,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 02:17:49,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:17:49,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:17:49,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:17:49,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:17:49,602 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:17:49,602 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:17:49,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488005176] [2021-11-23 02:17:49,604 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:17:49,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53536594] [2021-11-23 02:17:49,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53536594] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:17:49,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:17:49,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:17:49,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118346267] [2021-11-23 02:17:49,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:17:49,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:17:49,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:17:49,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:17:49,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:17:49,609 INFO L87 Difference]: Start difference. First operand 442 states and 543 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) [2021-11-23 02:17:51,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:17:51,030 INFO L93 Difference]: Finished difference Result 814 states and 992 transitions. [2021-11-23 02:17:51,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:17:51,036 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 [2021-11-23 02:17:51,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:17:51,039 INFO L225 Difference]: With dead ends: 814 [2021-11-23 02:17:51,039 INFO L226 Difference]: Without dead ends: 377 [2021-11-23 02:17:51,041 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:17:51,042 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 49 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:17:51,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 284 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-23 02:17:51,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-11-23 02:17:51,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 368. [2021-11-23 02:17:51,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 326 states have (on average 1.2147239263803682) internal successors, (396), 341 states have internal predecessors, (396), 21 states have call successors, (21), 10 states have call predecessors, (21), 8 states have return successors, (24), 18 states have call predecessors, (24), 21 states have call successors, (24) [2021-11-23 02:17:51,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 441 transitions. [2021-11-23 02:17:51,067 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 441 transitions. Word has length 28 [2021-11-23 02:17:51,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:17:51,067 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 441 transitions. [2021-11-23 02:17:51,068 INFO L471 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) [2021-11-23 02:17:51,068 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 441 transitions. [2021-11-23 02:17:51,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-23 02:17:51,069 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:17:51,072 INFO L514 BasicCegarLoop]: 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] [2021-11-23 02:17:51,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 02:17:51,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-23 02:17:51,299 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-23 02:17:51,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:17:51,299 INFO L85 PathProgramCache]: Analyzing trace with hash 227049609, now seen corresponding path program 1 times [2021-11-23 02:17:51,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:17:51,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375274821] [2021-11-23 02:17:51,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:51,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:17:51,333 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:17:51,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1076956628] [2021-11-23 02:17:51,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:51,347 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:17:51,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:17:51,348 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:17:51,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 02:17:51,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:17:51,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 02:17:51,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:17:51,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:17:51,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:17:51,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:17:51,879 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:17:51,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375274821] [2021-11-23 02:17:51,879 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:17:51,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076956628] [2021-11-23 02:17:51,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076956628] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:17:51,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [641074793] [2021-11-23 02:17:51,899 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2021-11-23 02:17:51,900 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:17:51,904 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:17:51,910 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:17:51,910 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:17:51,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:52,007 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-23 02:17:52,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 02:17:52,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:52,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:52,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 30 [2021-11-23 02:17:52,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 29 treesize of output 28 [2021-11-23 02:17:52,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:52,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-23 02:17:52,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 1 [2021-11-23 02:17:52,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 1 [2021-11-23 02:17:52,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 02:17:52,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:52,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:52,180 INFO L354 Elim1Store]: treesize reduction 34, result has 47.7 percent of original size [2021-11-23 02:17:52,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 43 treesize of output 65 [2021-11-23 02:17:52,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 02:17:52,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:52,290 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:17:52,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 25 [2021-11-23 02:17:52,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:52,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:52,425 INFO L354 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2021-11-23 02:17:52,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 02:17:52,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:52,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:52,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 38 [2021-11-23 02:17:52,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 02:17:52,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 02:17:52,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:52,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:52,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:52,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:52,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 208 treesize of output 170 [2021-11-23 02:17:52,631 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:17:52,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:52,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 02:17:52,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 02:17:53,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:53,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:53,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:53,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 02:17:53,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:53,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:53,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:53,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:53,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 262 treesize of output 216 [2021-11-23 02:17:53,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:53,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:53,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:53,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:53,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 249 treesize of output 209 [2021-11-23 02:17:53,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:53,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:53,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:53,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:53,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:53,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:53,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:53,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:53,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:53,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:53,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 64 [2021-11-23 02:17:53,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:53,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:53,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:53,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 02:17:53,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:53,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:53,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:53,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 02:17:53,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:53,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:53,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:53,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:17:53,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 326 treesize of output 276 [2021-11-23 02:17:53,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-23 02:17:53,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:17:53,859 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Should have been eliminated by DER at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.(DerPreprocessor.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:340) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:115) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:903) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:865) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:783) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:425) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:355) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:162) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:243) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:233) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:119) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 02:17:53,862 INFO L158 Benchmark]: Toolchain (without parser) took 29458.80ms. Allocated memory was 81.8MB in the beginning and 192.9MB in the end (delta: 111.1MB). Free memory was 44.5MB in the beginning and 107.4MB in the end (delta: -62.9MB). Peak memory consumption was 48.9MB. Max. memory is 16.1GB. [2021-11-23 02:17:53,863 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 81.8MB. Free memory was 53.8MB in the beginning and 53.8MB in the end (delta: 27.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:17:53,863 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1115.25ms. Allocated memory was 81.8MB in the beginning and 123.7MB in the end (delta: 41.9MB). Free memory was 44.4MB in the beginning and 65.7MB in the end (delta: -21.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-11-23 02:17:53,864 INFO L158 Benchmark]: Boogie Procedure Inliner took 172.27ms. Allocated memory is still 123.7MB. Free memory was 65.7MB in the beginning and 59.0MB in the end (delta: 6.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 02:17:53,864 INFO L158 Benchmark]: Boogie Preprocessor took 141.33ms. Allocated memory is still 123.7MB. Free memory was 58.5MB in the beginning and 51.6MB in the end (delta: 6.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 02:17:53,864 INFO L158 Benchmark]: RCFGBuilder took 1843.26ms. Allocated memory was 123.7MB in the beginning and 192.9MB in the end (delta: 69.2MB). Free memory was 51.6MB in the beginning and 154.9MB in the end (delta: -103.3MB). Peak memory consumption was 25.5MB. Max. memory is 16.1GB. [2021-11-23 02:17:53,865 INFO L158 Benchmark]: TraceAbstraction took 26180.32ms. Allocated memory is still 192.9MB. Free memory was 153.8MB in the beginning and 107.4MB in the end (delta: 46.4MB). Peak memory consumption was 47.1MB. Max. memory is 16.1GB. [2021-11-23 02:17:53,867 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 81.8MB. Free memory was 53.8MB in the beginning and 53.8MB in the end (delta: 27.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1115.25ms. Allocated memory was 81.8MB in the beginning and 123.7MB in the end (delta: 41.9MB). Free memory was 44.4MB in the beginning and 65.7MB in the end (delta: -21.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 172.27ms. Allocated memory is still 123.7MB. Free memory was 65.7MB in the beginning and 59.0MB in the end (delta: 6.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 141.33ms. Allocated memory is still 123.7MB. Free memory was 58.5MB in the beginning and 51.6MB in the end (delta: 6.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1843.26ms. Allocated memory was 123.7MB in the beginning and 192.9MB in the end (delta: 69.2MB). Free memory was 51.6MB in the beginning and 154.9MB in the end (delta: -103.3MB). Peak memory consumption was 25.5MB. Max. memory is 16.1GB. * TraceAbstraction took 26180.32ms. Allocated memory is still 192.9MB. Free memory was 153.8MB in the beginning and 107.4MB in the end (delta: 46.4MB). Peak memory consumption was 47.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Should have been eliminated by DER de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Should have been eliminated by DER: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.(DerPreprocessor.java:108) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 02:17:53,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1873c20-4c40-40f3-8d53-cc58ee6b9fa4/bin/utaipan-EQgc7hIp5V/config using search string *Overflow*32bit*_Bitvector*.epf No suitable settings file found using Overflow*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: Should have been eliminated by DER