./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.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_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/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_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/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_ca490cc3-69e9-4083-ade8-0ebd5df5b874/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 bb48026e7f870ff561a4cdd394c24cb5edb1d0f2fc8e8ef2bffe0b7b8438fda4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:24:03,227 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:24:03,230 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:24:03,269 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:24:03,270 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:24:03,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:24:03,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:24:03,277 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:24:03,280 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:24:03,282 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:24:03,284 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:24:03,286 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:24:03,286 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:24:03,288 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:24:03,291 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:24:03,293 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:24:03,295 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:24:03,297 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:24:03,300 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:24:03,304 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:24:03,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:24:03,309 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:24:03,312 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:24:03,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:24:03,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:24:03,319 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:24:03,320 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:24:03,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:24:03,322 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:24:03,324 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:24:03,325 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:24:03,327 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:24:03,328 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:24:03,330 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:24:03,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:24:03,333 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:24:03,334 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:24:03,335 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:24:03,335 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:24:03,337 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:24:03,338 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:24:03,340 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-11-23 02:24:03,375 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:24:03,375 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:24:03,376 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:24:03,376 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:24:03,377 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:24:03,378 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:24:03,378 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:24:03,378 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:24:03,379 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:24:03,379 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:24:03,379 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:24:03,380 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:24:03,380 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:24:03,380 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:24:03,380 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:24:03,381 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:24:03,381 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:24:03,381 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:24:03,383 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:24:03,383 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:24:03,383 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 02:24:03,384 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:24:03,384 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:24:03,384 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:24:03,385 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:24:03,385 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:24:03,385 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:24:03,386 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-23 02:24:03,386 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:24:03,386 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:24:03,387 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:24:03,387 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:24:03,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:24:03,388 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:24:03,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:24:03,388 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:24:03,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:24:03,389 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:24:03,389 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:24:03,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:24:03,390 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:24:03,390 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:24:03,390 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:24:03,391 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_ca490cc3-69e9-4083-ade8-0ebd5df5b874/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb48026e7f870ff561a4cdd394c24cb5edb1d0f2fc8e8ef2bffe0b7b8438fda4 [2021-11-23 02:24:03,703 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:24:03,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:24:03,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:24:03,758 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:24:03,759 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:24:03,761 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i [2021-11-23 02:24:03,842 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/data/94887d38c/f56262b6d0dd4d5997dda7c92442c2a3/FLAGea0438352 [2021-11-23 02:24:04,620 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:24:04,623 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i [2021-11-23 02:24:04,654 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/data/94887d38c/f56262b6d0dd4d5997dda7c92442c2a3/FLAGea0438352 [2021-11-23 02:24:04,777 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/data/94887d38c/f56262b6d0dd4d5997dda7c92442c2a3 [2021-11-23 02:24:04,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:24:04,784 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:24:04,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:24:04,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:24:04,794 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:24:04,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:24:04" (1/1) ... [2021-11-23 02:24:04,800 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31fa998b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:24:04, skipping insertion in model container [2021-11-23 02:24:04,801 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:24:04" (1/1) ... [2021-11-23 02:24:04,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:24:04,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:24:05,695 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_ca490cc3-69e9-4083-ade8-0ebd5df5b874/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44118,44131] [2021-11-23 02:24:05,707 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_ca490cc3-69e9-4083-ade8-0ebd5df5b874/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44660,44673] [2021-11-23 02:24:05,817 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_ca490cc3-69e9-4083-ade8-0ebd5df5b874/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56247,56260] [2021-11-23 02:24:05,818 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_ca490cc3-69e9-4083-ade8-0ebd5df5b874/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56368,56381] [2021-11-23 02:24:05,838 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:24:05,849 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:24:05,887 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_ca490cc3-69e9-4083-ade8-0ebd5df5b874/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44118,44131] [2021-11-23 02:24:05,892 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_ca490cc3-69e9-4083-ade8-0ebd5df5b874/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44660,44673] [2021-11-23 02:24:05,989 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_ca490cc3-69e9-4083-ade8-0ebd5df5b874/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56247,56260] [2021-11-23 02:24:05,991 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_ca490cc3-69e9-4083-ade8-0ebd5df5b874/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56368,56381] [2021-11-23 02:24:06,003 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:24:06,077 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:24:06,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:24:06 WrapperNode [2021-11-23 02:24:06,078 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:24:06,079 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:24:06,079 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:24:06,080 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:24:06,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:24:06" (1/1) ... [2021-11-23 02:24:06,135 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:24:06" (1/1) ... [2021-11-23 02:24:06,249 INFO L137 Inliner]: procedures = 282, calls = 347, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1209 [2021-11-23 02:24:06,250 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:24:06,251 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:24:06,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:24:06,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:24:06,266 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:24:06" (1/1) ... [2021-11-23 02:24:06,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:24:06" (1/1) ... [2021-11-23 02:24:06,305 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:24:06" (1/1) ... [2021-11-23 02:24:06,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:24:06" (1/1) ... [2021-11-23 02:24:06,422 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:24:06" (1/1) ... [2021-11-23 02:24:06,441 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:24:06" (1/1) ... [2021-11-23 02:24:06,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:24:06" (1/1) ... [2021-11-23 02:24:06,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:24:06,462 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:24:06,462 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:24:06,463 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:24:06,464 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:24:06" (1/1) ... [2021-11-23 02:24:06,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:24:06,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:24:06,502 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:24:06,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:24:06,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:24:06,579 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-23 02:24:06,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:24:06,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:24:06,580 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2021-11-23 02:24:06,580 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2021-11-23 02:24:06,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:24:06,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 02:24:06,580 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 02:24:06,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:24:06,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:24:06,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:24:06,581 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2021-11-23 02:24:06,581 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2021-11-23 02:24:06,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:24:06,582 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2021-11-23 02:24:06,582 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2021-11-23 02:24:06,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:24:06,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:24:06,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:24:06,930 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:24:06,932 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:24:08,386 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:24:08,928 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:24:08,930 INFO L301 CfgBuilder]: Removed 72 assume(true) statements. [2021-11-23 02:24:08,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:24:08 BoogieIcfgContainer [2021-11-23 02:24:08,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:24:08,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:24:08,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:24:08,945 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:24:08,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:24:04" (1/3) ... [2021-11-23 02:24:08,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2746137 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:24:08, skipping insertion in model container [2021-11-23 02:24:08,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:24:06" (2/3) ... [2021-11-23 02:24:08,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2746137 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:24:08, skipping insertion in model container [2021-11-23 02:24:08,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:24:08" (3/3) ... [2021-11-23 02:24:08,954 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test6-2.i [2021-11-23 02:24:08,961 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:24:08,962 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-11-23 02:24:09,034 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:24:09,052 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 02:24:09,053 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-11-23 02:24:09,089 INFO L276 IsEmpty]: Start isEmpty. Operand has 176 states, 142 states have (on average 1.7394366197183098) internal successors, (247), 156 states have internal predecessors, (247), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-23 02:24:09,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-23 02:24:09,094 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:24:09,095 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-23 02:24:09,096 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 02:24:09,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:24:09,107 INFO L85 PathProgramCache]: Analyzing trace with hash 31387996, now seen corresponding path program 1 times [2021-11-23 02:24:09,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:24:09,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288066248] [2021-11-23 02:24:09,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:24:09,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:24:09,249 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:24:09,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1333259740] [2021-11-23 02:24:09,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:24:09,250 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:24:09,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:24:09,256 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:24:09,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:24:09,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:24:09,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 02:24:09,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:24:09,632 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 6 treesize of output 5 [2021-11-23 02:24:09,681 INFO L354 Elim1Store]: treesize reduction 31, result has 35.4 percent of original size [2021-11-23 02:24:09,683 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 02:24:09,703 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 02:24:09,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 16 treesize of output 12 [2021-11-23 02:24:09,986 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 02:24:14,179 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:24:14,180 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 38 treesize of output 38 [2021-11-23 02:24:14,203 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 02:24:14,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 35 treesize of output 35 [2021-11-23 02:24:14,237 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 02:24:14,259 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 02:24:14,259 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:24:14,260 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:24:14,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288066248] [2021-11-23 02:24:14,260 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:24:14,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333259740] [2021-11-23 02:24:14,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333259740] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:24:14,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:24:14,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:24:14,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582785978] [2021-11-23 02:24:14,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:24:14,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:24:14,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:24:14,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:24:14,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:24:14,328 INFO L87 Difference]: Start difference. First operand has 176 states, 142 states have (on average 1.7394366197183098) internal successors, (247), 156 states have internal predecessors, (247), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:24:16,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:24:16,159 INFO L93 Difference]: Finished difference Result 354 states and 563 transitions. [2021-11-23 02:24:16,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:24:16,165 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 02:24:16,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:24:16,176 INFO L225 Difference]: With dead ends: 354 [2021-11-23 02:24:16,177 INFO L226 Difference]: Without dead ends: 178 [2021-11-23 02:24:16,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:24:16,186 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 2 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 65 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:24:16,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 481 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 65 Unchecked, 1.7s Time] [2021-11-23 02:24:16,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-11-23 02:24:16,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 177. [2021-11-23 02:24:16,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 144 states have (on average 1.2430555555555556) internal successors, (179), 158 states have internal predecessors, (179), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-23 02:24:16,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 209 transitions. [2021-11-23 02:24:16,257 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 209 transitions. Word has length 4 [2021-11-23 02:24:16,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:24:16,258 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 209 transitions. [2021-11-23 02:24:16,258 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 02:24:16,259 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 209 transitions. [2021-11-23 02:24:16,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 02:24:16,261 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:24:16,262 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 02:24:16,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:24:16,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-23 02:24:16,484 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 02:24:16,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:24:16,485 INFO L85 PathProgramCache]: Analyzing trace with hash -2011390594, now seen corresponding path program 1 times [2021-11-23 02:24:16,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:24:16,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039204629] [2021-11-23 02:24:16,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:24:16,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:24:16,520 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:24:16,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [994102003] [2021-11-23 02:24:16,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:24:16,522 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:24:16,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:24:16,523 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:24:16,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:24:16,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:24:16,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:24:16,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:24:16,871 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 02:24:16,872 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:24:16,872 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:24:16,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039204629] [2021-11-23 02:24:16,873 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:24:16,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994102003] [2021-11-23 02:24:16,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994102003] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:24:16,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:24:16,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:24:16,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190948556] [2021-11-23 02:24:16,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:24:16,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:24:16,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:24:16,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:24:16,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:24:16,878 INFO L87 Difference]: Start difference. First operand 177 states and 209 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:24:19,081 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:24:20,586 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:24:20,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:24:20,836 INFO L93 Difference]: Finished difference Result 311 states and 367 transitions. [2021-11-23 02:24:20,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:24:20,840 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 02:24:20,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:24:20,846 INFO L225 Difference]: With dead ends: 311 [2021-11-23 02:24:20,846 INFO L226 Difference]: Without dead ends: 309 [2021-11-23 02:24:20,847 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 02:24:20,848 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 139 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:24:20,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 528 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-23 02:24:20,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-11-23 02:24:20,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 299. [2021-11-23 02:24:20,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 255 states have (on average 1.2352941176470589) internal successors, (315), 270 states have internal predecessors, (315), 24 states have call successors, (24), 7 states have call predecessors, (24), 6 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-23 02:24:20,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 363 transitions. [2021-11-23 02:24:20,887 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 363 transitions. Word has length 18 [2021-11-23 02:24:20,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:24:20,888 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 363 transitions. [2021-11-23 02:24:20,888 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 02:24:20,888 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 363 transitions. [2021-11-23 02:24:20,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 02:24:20,890 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:24:20,890 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 02:24:20,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:24:21,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:24:21,116 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 02:24:21,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:24:21,117 INFO L85 PathProgramCache]: Analyzing trace with hash 2071401060, now seen corresponding path program 1 times [2021-11-23 02:24:21,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:24:21,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683490007] [2021-11-23 02:24:21,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:24:21,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:24:21,162 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:24:21,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1349206718] [2021-11-23 02:24:21,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:24:21,176 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:24:21,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:24:21,180 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:24:21,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:24:21,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:24:21,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:24:21,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:24:21,483 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 02:24:21,483 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:24:21,484 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:24:21,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683490007] [2021-11-23 02:24:21,488 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:24:21,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349206718] [2021-11-23 02:24:21,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349206718] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:24:21,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:24:21,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:24:21,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090239649] [2021-11-23 02:24:21,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:24:21,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:24:21,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:24:21,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:24:21,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:24:21,499 INFO L87 Difference]: Start difference. First operand 299 states and 363 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:24:23,371 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:24:24,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:24:24,232 INFO L93 Difference]: Finished difference Result 537 states and 655 transitions. [2021-11-23 02:24:24,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:24:24,239 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 02:24:24,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:24:24,245 INFO L225 Difference]: With dead ends: 537 [2021-11-23 02:24:24,246 INFO L226 Difference]: Without dead ends: 535 [2021-11-23 02:24:24,247 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 02:24:24,248 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 174 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:24:24,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 535 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-23 02:24:24,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2021-11-23 02:24:24,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 524. [2021-11-23 02:24:24,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 459 states have (on average 1.2352941176470589) internal successors, (567), 477 states have internal predecessors, (567), 41 states have call successors, (41), 13 states have call predecessors, (41), 10 states have return successors, (44), 34 states have call predecessors, (44), 41 states have call successors, (44) [2021-11-23 02:24:24,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 652 transitions. [2021-11-23 02:24:24,301 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 652 transitions. Word has length 19 [2021-11-23 02:24:24,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:24:24,301 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 652 transitions. [2021-11-23 02:24:24,302 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 02:24:24,302 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 652 transitions. [2021-11-23 02:24:24,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 02:24:24,304 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:24:24,304 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 02:24:24,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:24:24,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:24:24,520 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 02:24:24,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:24:24,521 INFO L85 PathProgramCache]: Analyzing trace with hash 949063289, now seen corresponding path program 1 times [2021-11-23 02:24:24,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:24:24,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047300341] [2021-11-23 02:24:24,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:24:24,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:24:24,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:24:24,640 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 02:24:24,640 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:24:24,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047300341] [2021-11-23 02:24:24,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047300341] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:24:24,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:24:24,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:24:24,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204943827] [2021-11-23 02:24:24,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:24:24,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:24:24,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:24:24,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:24:24,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:24:24,644 INFO L87 Difference]: Start difference. First operand 524 states and 652 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:24:26,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:24:26,178 INFO L93 Difference]: Finished difference Result 871 states and 1093 transitions. [2021-11-23 02:24:26,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:24:26,184 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 02:24:26,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:24:26,191 INFO L225 Difference]: With dead ends: 871 [2021-11-23 02:24:26,191 INFO L226 Difference]: Without dead ends: 702 [2021-11-23 02:24:26,193 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 02:24:26,194 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 67 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:24:26,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 489 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-23 02:24:26,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2021-11-23 02:24:26,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 524. [2021-11-23 02:24:26,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 459 states have (on average 1.233115468409586) internal successors, (566), 477 states have internal predecessors, (566), 41 states have call successors, (41), 13 states have call predecessors, (41), 10 states have return successors, (44), 34 states have call predecessors, (44), 41 states have call successors, (44) [2021-11-23 02:24:26,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 651 transitions. [2021-11-23 02:24:26,249 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 651 transitions. Word has length 24 [2021-11-23 02:24:26,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:24:26,249 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 651 transitions. [2021-11-23 02:24:26,249 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 02:24:26,250 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 651 transitions. [2021-11-23 02:24:26,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 02:24:26,251 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:24:26,251 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 02:24:26,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:24:26,252 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 02:24:26,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:24:26,253 INFO L85 PathProgramCache]: Analyzing trace with hash -12375280, now seen corresponding path program 1 times [2021-11-23 02:24:26,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:24:26,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801714794] [2021-11-23 02:24:26,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:24:26,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:24:26,275 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:24:26,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1658459962] [2021-11-23 02:24:26,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:24:26,276 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:24:26,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:24:26,278 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:24:26,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 02:24:26,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:24:26,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 02:24:26,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:24:26,575 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 02:24:26,576 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:24:26,576 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:24:26,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801714794] [2021-11-23 02:24:26,576 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:24:26,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658459962] [2021-11-23 02:24:26,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658459962] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:24:26,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:24:26,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-23 02:24:26,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764941048] [2021-11-23 02:24:26,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:24:26,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:24:26,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:24:26,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:24:26,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:24:26,580 INFO L87 Difference]: Start difference. First operand 524 states and 651 transitions. Second operand has 3 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 02:24:27,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:24:27,482 INFO L93 Difference]: Finished difference Result 550 states and 671 transitions. [2021-11-23 02:24:27,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:24:27,486 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 02:24:27,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:24:27,492 INFO L225 Difference]: With dead ends: 550 [2021-11-23 02:24:27,492 INFO L226 Difference]: Without dead ends: 549 [2021-11-23 02:24:27,493 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 02:24:27,494 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 144 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:24:27,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 359 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-23 02:24:27,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2021-11-23 02:24:27,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 539. [2021-11-23 02:24:27,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 469 states have (on average 1.2302771855010661) internal successors, (577), 488 states have internal predecessors, (577), 44 states have call successors, (44), 15 states have call predecessors, (44), 12 states have return successors, (47), 37 states have call predecessors, (47), 44 states have call successors, (47) [2021-11-23 02:24:27,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 668 transitions. [2021-11-23 02:24:27,571 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 668 transitions. Word has length 27 [2021-11-23 02:24:27,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:24:27,572 INFO L470 AbstractCegarLoop]: Abstraction has 539 states and 668 transitions. [2021-11-23 02:24:27,572 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 02:24:27,572 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 668 transitions. [2021-11-23 02:24:27,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 02:24:27,575 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:24:27,575 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 02:24:27,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 02:24:27,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:24:27,792 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 02:24:27,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:24:27,792 INFO L85 PathProgramCache]: Analyzing trace with hash -383633619, now seen corresponding path program 1 times [2021-11-23 02:24:27,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:24:27,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410189810] [2021-11-23 02:24:27,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:24:27,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:24:27,834 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:24:27,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1538717123] [2021-11-23 02:24:27,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:24:27,837 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:24:27,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:24:27,839 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:24:27,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 02:24:28,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:24:28,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 02:24:28,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:24:28,146 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 02:24:28,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:24:28,146 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:24:28,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410189810] [2021-11-23 02:24:28,147 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:24:28,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538717123] [2021-11-23 02:24:28,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538717123] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:24:28,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:24:28,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-23 02:24:28,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417600235] [2021-11-23 02:24:28,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:24:28,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:24:28,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:24:28,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:24:28,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:24:28,150 INFO L87 Difference]: Start difference. First operand 539 states and 668 transitions. Second operand has 3 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 02:24:29,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:24:29,161 INFO L93 Difference]: Finished difference Result 539 states and 668 transitions. [2021-11-23 02:24:29,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:24:29,172 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 02:24:29,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:24:29,176 INFO L225 Difference]: With dead ends: 539 [2021-11-23 02:24:29,176 INFO L226 Difference]: Without dead ends: 538 [2021-11-23 02:24:29,177 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 02:24:29,178 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 175 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:24:29,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 172 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-23 02:24:29,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-11-23 02:24:29,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2021-11-23 02:24:29,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 469 states have (on average 1.2260127931769722) internal successors, (575), 487 states have internal predecessors, (575), 44 states have call successors, (44), 15 states have call predecessors, (44), 12 states have return successors, (47), 37 states have call predecessors, (47), 44 states have call successors, (47) [2021-11-23 02:24:29,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 666 transitions. [2021-11-23 02:24:29,227 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 666 transitions. Word has length 28 [2021-11-23 02:24:29,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:24:29,227 INFO L470 AbstractCegarLoop]: Abstraction has 538 states and 666 transitions. [2021-11-23 02:24:29,227 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 02:24:29,227 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 666 transitions. [2021-11-23 02:24:29,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 02:24:29,229 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:24:29,229 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 02:24:29,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 02:24:29,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:24:29,430 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 02:24:29,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:24:29,430 INFO L85 PathProgramCache]: Analyzing trace with hash -259574453, now seen corresponding path program 1 times [2021-11-23 02:24:29,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:24:29,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159486179] [2021-11-23 02:24:29,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:24:29,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:24:29,472 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:24:29,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2069862298] [2021-11-23 02:24:29,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:24:29,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:24:29,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:24:29,478 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:24:29,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 02:24:29,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:24:29,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:24:29,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:24:29,874 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 02:24:29,874 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:24:29,874 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:24:29,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159486179] [2021-11-23 02:24:29,875 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:24:29,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069862298] [2021-11-23 02:24:29,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069862298] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:24:29,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:24:29,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:24:29,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118603461] [2021-11-23 02:24:29,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:24:29,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:24:29,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:24:29,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:24:29,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:24:29,878 INFO L87 Difference]: Start difference. First operand 538 states and 666 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:24:31,484 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:24:31,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:24:31,637 INFO L93 Difference]: Finished difference Result 1000 states and 1234 transitions. [2021-11-23 02:24:31,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:24:31,642 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 02:24:31,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:24:31,646 INFO L225 Difference]: With dead ends: 1000 [2021-11-23 02:24:31,646 INFO L226 Difference]: Without dead ends: 467 [2021-11-23 02:24:31,648 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 02:24:31,649 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 68 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:24:31,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 332 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-23 02:24:31,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2021-11-23 02:24:31,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 415. [2021-11-23 02:24:31,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 363 states have (on average 1.2148760330578512) internal successors, (441), 379 states have internal predecessors, (441), 30 states have call successors, (30), 11 states have call predecessors, (30), 9 states have return successors, (33), 26 states have call predecessors, (33), 30 states have call successors, (33) [2021-11-23 02:24:31,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 504 transitions. [2021-11-23 02:24:31,681 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 504 transitions. Word has length 28 [2021-11-23 02:24:31,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:24:31,682 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 504 transitions. [2021-11-23 02:24:31,682 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 02:24:31,682 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 504 transitions. [2021-11-23 02:24:31,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-23 02:24:31,683 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:24:31,684 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 02:24:31,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 02:24:31,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-23 02:24:31,903 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 02:24:31,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:24:31,904 INFO L85 PathProgramCache]: Analyzing trace with hash 107922983, now seen corresponding path program 1 times [2021-11-23 02:24:31,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:24:31,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148654711] [2021-11-23 02:24:31,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:24:31,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:24:31,921 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:24:31,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [230507487] [2021-11-23 02:24:31,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:24:31,921 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:24:31,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:24:31,923 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:24:31,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 02:24:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:24:32,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 02:24:32,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:24:32,341 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 02:24:32,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:24:32,637 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 02:24:32,637 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:24:32,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148654711] [2021-11-23 02:24:32,638 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:24:32,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230507487] [2021-11-23 02:24:32,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230507487] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:24:32,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [727311290] [2021-11-23 02:24:32,662 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2021-11-23 02:24:32,663 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:24:32,668 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:24:32,675 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:24:32,675 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:24:32,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:32,749 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:24:32,773 INFO L354 Elim1Store]: treesize reduction 31, result has 35.4 percent of original size [2021-11-23 02:24:32,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 70 [2021-11-23 02:24:32,792 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 71 treesize of output 70 [2021-11-23 02:24:32,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:32,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-23 02:24:32,835 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 5 treesize of output 3 [2021-11-23 02:24:32,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:32,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-11-23 02:24:32,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-23 02:24:32,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-23 02:24:32,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:32,927 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-23 02:24:32,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 38 [2021-11-23 02:24:32,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:32,983 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-23 02:24:32,984 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 02:24:33,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:33,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:33,114 INFO L354 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2021-11-23 02:24:33,115 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 02:24:33,137 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 02:24:33,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:33,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:33,157 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 02:24:33,180 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 02:24:33,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:33,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:33,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:33,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:33,199 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 89 treesize of output 81 [2021-11-23 02:24:33,212 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 86 treesize of output 85 [2021-11-23 02:24:33,320 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 02:24:33,333 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 02:24:33,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:33,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:33,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:33,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:33,356 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 136 treesize of output 114 [2021-11-23 02:24:33,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:33,373 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 131 treesize of output 135 [2021-11-23 02:24:33,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:33,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:33,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:33,976 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 02:24:33,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:33,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:33,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:33,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:33,999 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 169 treesize of output 145 [2021-11-23 02:24:34,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,022 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 162 treesize of output 138 [2021-11-23 02:24:34,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 151 [2021-11-23 02:24:34,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 159 [2021-11-23 02:24:34,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,122 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 02:24:34,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,201 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 02:24:34,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,220 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 02:24:34,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,249 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 188 treesize of output 160 [2021-11-23 02:24:34,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,273 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 177 treesize of output 153 [2021-11-23 02:24:34,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 170 treesize of output 170 [2021-11-23 02:24:34,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 162 [2021-11-23 02:24:34,591 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 16 treesize of output 12 [2021-11-23 02:24:34,597 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 25 treesize of output 1 [2021-11-23 02:24:34,602 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 25 treesize of output 1 [2021-11-23 02:24:34,613 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 12 treesize of output 9 [2021-11-23 02:24:34,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:24:34,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 150 treesize of output 110 [2021-11-23 02:24:34,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 110 treesize of output 102 [2021-11-23 02:24:34,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 88 [2021-11-23 02:24:34,821 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 26 treesize of output 16 [2021-11-23 02:24:34,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2021-11-23 02:24:34,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-11-23 02:24:34,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2021-11-23 02:24:34,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:34,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2021-11-23 02:24:35,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:35,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:35,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2021-11-23 02:24:35,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:35,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:35,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-11-23 02:24:35,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:35,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:35,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:35,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2021-11-23 02:24:35,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:35,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:35,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:35,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:35,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 150 treesize of output 110 [2021-11-23 02:24:35,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 110 treesize of output 102 [2021-11-23 02:24:35,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:35,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:35,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:35,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:35,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:35,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:35,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 88 [2021-11-23 02:24:35,415 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 26 treesize of output 16 [2021-11-23 02:24:35,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:35,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:35,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:35,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2021-11-23 02:24:35,526 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 02:24:35,535 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 13 treesize of output 9 [2021-11-23 02:24:35,546 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 13 treesize of output 9 [2021-11-23 02:24:35,880 INFO L197 IcfgInterpreter]: Interpreting procedure alt_bzero with input of size 56 for LOIs [2021-11-23 02:24:35,969 INFO L197 IcfgInterpreter]: Interpreting procedure alt_malloc with input of size 138 for LOIs [2021-11-23 02:24:36,732 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:24:41,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [727311290] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:24:41,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-23 02:24:41,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [6, 7] total 32 [2021-11-23 02:24:41,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880718828] [2021-11-23 02:24:41,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:24:41,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-23 02:24:41,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:24:41,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-23 02:24:41,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=810, Unknown=0, NotChecked=0, Total=992 [2021-11-23 02:24:41,302 INFO L87 Difference]: Start difference. First operand 415 states and 504 transitions. Second operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 16 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 02:24:44,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:24:44,756 INFO L93 Difference]: Finished difference Result 819 states and 998 transitions. [2021-11-23 02:24:44,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 02:24:44,757 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 16 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2021-11-23 02:24:44,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:24:44,760 INFO L225 Difference]: With dead ends: 819 [2021-11-23 02:24:44,760 INFO L226 Difference]: Without dead ends: 412 [2021-11-23 02:24:44,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 65 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=182, Invalid=810, Unknown=0, NotChecked=0, Total=992 [2021-11-23 02:24:44,762 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 14 mSDsluCounter, 1001 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1123 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 444 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:24:44,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 1123 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 432 Invalid, 0 Unknown, 444 Unchecked, 3.4s Time] [2021-11-23 02:24:44,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-11-23 02:24:44,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2021-11-23 02:24:44,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 360 states have (on average 1.211111111111111) internal successors, (436), 375 states have internal predecessors, (436), 30 states have call successors, (30), 11 states have call predecessors, (30), 9 states have return successors, (33), 26 states have call predecessors, (33), 30 states have call successors, (33) [2021-11-23 02:24:44,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 499 transitions. [2021-11-23 02:24:44,787 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 499 transitions. Word has length 34 [2021-11-23 02:24:44,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:24:44,788 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 499 transitions. [2021-11-23 02:24:44,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 16 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 02:24:44,788 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 499 transitions. [2021-11-23 02:24:44,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-23 02:24:44,789 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:24:44,789 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, 1, 1, 1] [2021-11-23 02:24:44,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-23 02:24:45,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:24:45,003 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-23 02:24:45,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:24:45,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1157443849, now seen corresponding path program 1 times [2021-11-23 02:24:45,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:24:45,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964962199] [2021-11-23 02:24:45,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:24:45,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:24:45,031 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:24:45,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1210457615] [2021-11-23 02:24:45,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:24:45,032 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:24:45,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:24:45,037 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:24:45,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-23 02:24:45,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:24:45,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:24:45,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:24:45,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:24:45,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:24:45,298 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:24:45,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964962199] [2021-11-23 02:24:45,298 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:24:45,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210457615] [2021-11-23 02:24:45,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210457615] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:24:45,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:24:45,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:24:45,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288814247] [2021-11-23 02:24:45,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:24:45,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:24:45,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:24:45,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:24:45,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:24:45,302 INFO L87 Difference]: Start difference. First operand 412 states and 499 transitions. Second operand has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-23 02:24:47,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:24:47,503 INFO L93 Difference]: Finished difference Result 760 states and 929 transitions. [2021-11-23 02:24:47,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:24:47,520 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 37 [2021-11-23 02:24:47,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:24:47,528 INFO L225 Difference]: With dead ends: 760 [2021-11-23 02:24:47,529 INFO L226 Difference]: Without dead ends: 758 [2021-11-23 02:24:47,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 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 02:24:47,532 INFO L933 BasicCegarLoop]: 315 mSDtfsCounter, 184 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:24:47,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 798 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-23 02:24:47,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2021-11-23 02:24:47,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 746. [2021-11-23 02:24:47,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 668 states have (on average 1.2110778443113772) internal successors, (809), 684 states have internal predecessors, (809), 51 states have call successors, (51), 18 states have call predecessors, (51), 14 states have return successors, (62), 43 states have call predecessors, (62), 51 states have call successors, (62) [2021-11-23 02:24:47,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 922 transitions. [2021-11-23 02:24:47,586 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 922 transitions. Word has length 37 [2021-11-23 02:24:47,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:24:47,587 INFO L470 AbstractCegarLoop]: Abstraction has 746 states and 922 transitions. [2021-11-23 02:24:47,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-23 02:24:47,587 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 922 transitions. [2021-11-23 02:24:47,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-23 02:24:47,594 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:24:47,594 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1] [2021-11-23 02:24:47,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-23 02:24:47,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:24:47,815 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting alt_bzeroErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-11-23 02:24:47,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:24:47,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1785745275, now seen corresponding path program 1 times [2021-11-23 02:24:47,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:24:47,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363829424] [2021-11-23 02:24:47,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:24:47,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:24:47,844 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:24:47,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1082518887] [2021-11-23 02:24:47,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:24:47,853 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:24:47,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:24:47,863 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:24:47,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-23 02:24:48,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:24:48,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 02:24:48,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:24:48,193 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:24:48,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:24:48,380 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 02:24:48,381 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:24:48,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363829424] [2021-11-23 02:24:48,381 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:24:48,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082518887] [2021-11-23 02:24:48,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082518887] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:24:48,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1186943842] [2021-11-23 02:24:48,384 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2021-11-23 02:24:48,385 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:24:48,385 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:24:48,385 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:24:48,386 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:24:48,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-23 02:24:48,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:48,420 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:24:48,441 INFO L354 Elim1Store]: treesize reduction 31, result has 35.4 percent of original size [2021-11-23 02:24:48,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 70 [2021-11-23 02:24:48,456 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 71 treesize of output 70 [2021-11-23 02:24:48,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:48,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-23 02:24:48,491 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 5 treesize of output 3 [2021-11-23 02:24:48,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:48,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-11-23 02:24:48,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:48,555 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-23 02:24:48,556 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 02:24:48,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:48,568 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 02:24:48,579 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 02:24:48,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:48,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:48,696 INFO L354 Elim1Store]: treesize reduction 34, result has 47.7 percent of original size [2021-11-23 02:24:48,696 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 89 treesize of output 101 [2021-11-23 02:24:48,743 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 02:24:48,842 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:24:48,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:48,868 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:24:48,870 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 02:24:48,957 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 02:24:48,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:48,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:49,036 INFO L354 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2021-11-23 02:24:49,036 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 02:24:49,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:49,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:49,063 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 02:24:49,079 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 02:24:49,207 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 02:24:49,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:49,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:49,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:49,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:49,232 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 410 treesize of output 316 [2021-11-23 02:24:49,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:49,284 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 02:24:49,326 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:24:49,410 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 02:24:50,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:50,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:50,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:50,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:50,072 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 464 treesize of output 362 [2021-11-23 02:24:50,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:50,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:50,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:50,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:50,102 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 451 treesize of output 355 [2021-11-23 02:24:50,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:50,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:50,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:50,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:50,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:50,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:50,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:50,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:50,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:50,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:50,192 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 02:24:50,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:50,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:50,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:50,286 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 02:24:50,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:50,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:50,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:50,319 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 02:24:50,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:50,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:50,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:50,408 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 02:24:50,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:50,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:50,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:50,425 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 02:24:50,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:50,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:50,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:50,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:50,452 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 528 treesize of output 422 [2021-11-23 02:24:50,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:50,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:50,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:50,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:24:50,500 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 422 treesize of output 424 [2021-11-23 02:24:50,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-23 02:24:50,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:24:50,760 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 02:24:50,763 INFO L158 Benchmark]: Toolchain (without parser) took 45979.03ms. Allocated memory was 86.0MB in the beginning and 218.1MB in the end (delta: 132.1MB). Free memory was 42.0MB in the beginning and 52.0MB in the end (delta: -10.0MB). Peak memory consumption was 122.1MB. Max. memory is 16.1GB. [2021-11-23 02:24:50,763 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 86.0MB. Free memory is still 61.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:24:50,763 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1289.48ms. Allocated memory was 86.0MB in the beginning and 111.1MB in the end (delta: 25.2MB). Free memory was 41.8MB in the beginning and 52.0MB in the end (delta: -10.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 02:24:50,764 INFO L158 Benchmark]: Boogie Procedure Inliner took 171.34ms. Allocated memory is still 111.1MB. Free memory was 51.8MB in the beginning and 44.1MB in the end (delta: 7.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 02:24:50,764 INFO L158 Benchmark]: Boogie Preprocessor took 210.04ms. Allocated memory is still 111.1MB. Free memory was 44.1MB in the beginning and 80.3MB in the end (delta: -36.2MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2021-11-23 02:24:50,764 INFO L158 Benchmark]: RCFGBuilder took 2473.88ms. Allocated memory was 111.1MB in the beginning and 148.9MB in the end (delta: 37.7MB). Free memory was 79.6MB in the beginning and 98.2MB in the end (delta: -18.5MB). Peak memory consumption was 58.9MB. Max. memory is 16.1GB. [2021-11-23 02:24:50,765 INFO L158 Benchmark]: TraceAbstraction took 41822.09ms. Allocated memory was 148.9MB in the beginning and 218.1MB in the end (delta: 69.2MB). Free memory was 98.2MB in the beginning and 52.0MB in the end (delta: 46.1MB). Peak memory consumption was 115.3MB. Max. memory is 16.1GB. [2021-11-23 02:24:50,766 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 86.0MB. Free memory is still 61.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1289.48ms. Allocated memory was 86.0MB in the beginning and 111.1MB in the end (delta: 25.2MB). Free memory was 41.8MB in the beginning and 52.0MB in the end (delta: -10.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 171.34ms. Allocated memory is still 111.1MB. Free memory was 51.8MB in the beginning and 44.1MB in the end (delta: 7.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 210.04ms. Allocated memory is still 111.1MB. Free memory was 44.1MB in the beginning and 80.3MB in the end (delta: -36.2MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. * RCFGBuilder took 2473.88ms. Allocated memory was 111.1MB in the beginning and 148.9MB in the end (delta: 37.7MB). Free memory was 79.6MB in the beginning and 98.2MB in the end (delta: -18.5MB). Peak memory consumption was 58.9MB. Max. memory is 16.1GB. * TraceAbstraction took 41822.09ms. Allocated memory was 148.9MB in the beginning and 218.1MB in the end (delta: 69.2MB). Free memory was 98.2MB in the beginning and 52.0MB in the end (delta: 46.1MB). Peak memory consumption was 115.3MB. 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 02:24:50,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca490cc3-69e9-4083-ade8-0ebd5df5b874/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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_ca490cc3-69e9-4083-ade8-0ebd5df5b874/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