./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 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/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_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bb48026e7f870ff561a4cdd394c24cb5edb1d0f2fc8e8ef2bffe0b7b8438fda4 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 06:48:44,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:48:44,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:48:44,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:48:44,842 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:48:44,846 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:48:44,847 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:48:44,848 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:48:44,849 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:48:44,850 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:48:44,851 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:48:44,853 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:48:44,853 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:48:44,854 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:48:44,855 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:48:44,856 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:48:44,857 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:48:44,858 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:48:44,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:48:44,862 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:48:44,863 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:48:44,865 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:48:44,866 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:48:44,867 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:48:44,871 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:48:44,871 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:48:44,871 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:48:44,872 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:48:44,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:48:44,874 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:48:44,875 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:48:44,875 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:48:44,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:48:44,877 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:48:44,878 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:48:44,879 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:48:44,880 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:48:44,880 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:48:44,880 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:48:44,881 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:48:44,882 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:48:44,883 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-19 06:48:44,905 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:48:44,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:48:44,906 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:48:44,906 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:48:44,907 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:48:44,907 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:48:44,907 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:48:44,907 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:48:44,908 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:48:44,908 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:48:44,908 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:48:44,908 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:48:44,909 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:48:44,909 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:48:44,909 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:48:44,910 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:48:44,910 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:48:44,910 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:48:44,911 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:48:44,911 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:48:44,911 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 06:48:44,912 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:48:44,912 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:48:44,912 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:48:44,912 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:48:44,913 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:48:44,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:48:44,913 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-19 06:48:44,914 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:48:44,914 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:48:44,914 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:48:44,914 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:48:44,915 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:48:44,915 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:48:44,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:48:44,915 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:48:44,916 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:48:44,916 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:48:44,916 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:48:44,917 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:48:44,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:48:44,917 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:48:44,917 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:48:44,918 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb48026e7f870ff561a4cdd394c24cb5edb1d0f2fc8e8ef2bffe0b7b8438fda4 [2022-11-19 06:48:45,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:48:45,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:48:45,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:48:45,230 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:48:45,231 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:48:45,232 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i [2022-11-19 06:48:45,320 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/data/eb9b6d516/10bb6c1ed43847b4a06819ae0564d1b7/FLAG22057bfe0 [2022-11-19 06:48:45,913 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:48:45,914 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i [2022-11-19 06:48:45,930 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/data/eb9b6d516/10bb6c1ed43847b4a06819ae0564d1b7/FLAG22057bfe0 [2022-11-19 06:48:46,295 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/data/eb9b6d516/10bb6c1ed43847b4a06819ae0564d1b7 [2022-11-19 06:48:46,297 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:48:46,299 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:48:46,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:48:46,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:48:46,304 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:48:46,305 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:48:46" (1/1) ... [2022-11-19 06:48:46,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34f5dc90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:46, skipping insertion in model container [2022-11-19 06:48:46,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:48:46" (1/1) ... [2022-11-19 06:48:46,315 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:48:46,394 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:48:46,996 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44118,44131] [2022-11-19 06:48:47,005 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44660,44673] [2022-11-19 06:48:47,097 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56247,56260] [2022-11-19 06:48:47,102 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56368,56381] [2022-11-19 06:48:47,145 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:48:47,153 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:48:47,216 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44118,44131] [2022-11-19 06:48:47,236 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44660,44673] [2022-11-19 06:48:47,361 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56247,56260] [2022-11-19 06:48:47,372 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56368,56381] [2022-11-19 06:48:47,380 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:48:47,463 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:48:47,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:47 WrapperNode [2022-11-19 06:48:47,464 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:48:47,465 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:48:47,465 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:48:47,466 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:48:47,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:47" (1/1) ... [2022-11-19 06:48:47,530 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:47" (1/1) ... [2022-11-19 06:48:47,600 INFO L138 Inliner]: procedures = 282, calls = 347, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1205 [2022-11-19 06:48:47,601 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:48:47,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:48:47,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:48:47,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:48:47,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:47" (1/1) ... [2022-11-19 06:48:47,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:47" (1/1) ... [2022-11-19 06:48:47,619 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:47" (1/1) ... [2022-11-19 06:48:47,620 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:47" (1/1) ... [2022-11-19 06:48:47,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:47" (1/1) ... [2022-11-19 06:48:47,678 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:47" (1/1) ... [2022-11-19 06:48:47,682 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:47" (1/1) ... [2022-11-19 06:48:47,687 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:47" (1/1) ... [2022-11-19 06:48:47,696 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:48:47,705 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:48:47,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:48:47,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:48:47,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:47" (1/1) ... [2022-11-19 06:48:47,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:48:47,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:48:47,738 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:48:47,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:48:47,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 06:48:47,809 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-19 06:48:47,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 06:48:47,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:48:47,809 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2022-11-19 06:48:47,810 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2022-11-19 06:48:47,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 06:48:47,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-19 06:48:47,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-19 06:48:47,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 06:48:47,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 06:48:47,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:48:47,812 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2022-11-19 06:48:47,812 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2022-11-19 06:48:47,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 06:48:47,813 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2022-11-19 06:48:47,813 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2022-11-19 06:48:47,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:48:47,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:48:47,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:48:48,089 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:48:48,092 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:48:49,725 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:48:50,185 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:48:50,186 INFO L300 CfgBuilder]: Removed 72 assume(true) statements. [2022-11-19 06:48:50,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:48:50 BoogieIcfgContainer [2022-11-19 06:48:50,189 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:48:50,190 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:48:50,191 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:48:50,194 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:48:50,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:48:46" (1/3) ... [2022-11-19 06:48:50,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45d8ac4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:48:50, skipping insertion in model container [2022-11-19 06:48:50,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:47" (2/3) ... [2022-11-19 06:48:50,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45d8ac4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:48:50, skipping insertion in model container [2022-11-19 06:48:50,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:48:50" (3/3) ... [2022-11-19 06:48:50,197 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test6-2.i [2022-11-19 06:48:50,216 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:48:50,216 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-19 06:48:50,267 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:48:50,273 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4b242312, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:48:50,273 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-11-19 06:48:50,278 INFO L276 IsEmpty]: Start isEmpty. Operand has 176 states, 142 states have (on average 1.7394366197183098) internal successors, (247), 156 states have internal predecessors, (247), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-19 06:48:50,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 06:48:50,283 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:48:50,284 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 06:48:50,284 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-19 06:48:50,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:48:50,290 INFO L85 PathProgramCache]: Analyzing trace with hash 31179180, now seen corresponding path program 1 times [2022-11-19 06:48:50,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:48:50,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426421002] [2022-11-19 06:48:50,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:48:50,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:48:50,467 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:48:50,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1472579054] [2022-11-19 06:48:50,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:48:50,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:48:50,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:48:50,474 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:48:50,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 06:48:50,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:48:50,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-19 06:48:50,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:48:50,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 06:48:50,908 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-19 06:48:50,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-19 06:48:50,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-19 06:48:50,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-19 06:48:51,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2022-11-19 06:48:51,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 06:48:51,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:48:51,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-19 06:48:51,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:48:51,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:48:51,175 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:48:51,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426421002] [2022-11-19 06:48:51,176 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:48:51,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472579054] [2022-11-19 06:48:51,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472579054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:48:51,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:48:51,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:48:51,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699478867] [2022-11-19 06:48:51,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:48:51,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:48:51,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:48:51,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:48:51,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:48:51,222 INFO L87 Difference]: Start difference. First operand has 176 states, 142 states have (on average 1.7394366197183098) internal successors, (247), 156 states have internal predecessors, (247), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:48:53,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:48:53,450 INFO L93 Difference]: Finished difference Result 416 states and 678 transitions. [2022-11-19 06:48:53,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:48:53,453 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-19 06:48:53,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:48:53,463 INFO L225 Difference]: With dead ends: 416 [2022-11-19 06:48:53,463 INFO L226 Difference]: Without dead ends: 240 [2022-11-19 06:48:53,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:48:53,469 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 68 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:48:53,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 462 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-19 06:48:53,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-11-19 06:48:53,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 177. [2022-11-19 06:48:53,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 144 states have (on average 1.2430555555555556) internal successors, (179), 158 states have internal predecessors, (179), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-19 06:48:53,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 209 transitions. [2022-11-19 06:48:53,522 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 209 transitions. Word has length 4 [2022-11-19 06:48:53,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:48:53,522 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 209 transitions. [2022-11-19 06:48:53,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:48:53,523 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 209 transitions. [2022-11-19 06:48:53,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-19 06:48:53,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:48:53,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:48:53,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 06:48:53,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-19 06:48:53,731 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-19 06:48:53,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:48:53,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1356850095, now seen corresponding path program 1 times [2022-11-19 06:48:53,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:48:53,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47675707] [2022-11-19 06:48:53,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:48:53,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:48:53,813 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:48:53,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [246655640] [2022-11-19 06:48:53,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:48:53,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:48:53,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:48:53,817 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:48:53,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 06:48:54,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:48:54,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 06:48:54,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:48:54,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:48:54,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:48:54,161 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:48:54,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47675707] [2022-11-19 06:48:54,161 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:48:54,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246655640] [2022-11-19 06:48:54,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246655640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:48:54,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:48:54,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:48:54,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957134379] [2022-11-19 06:48:54,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:48:54,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:48:54,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:48:54,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:48:54,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:48:54,165 INFO L87 Difference]: Start difference. First operand 177 states and 209 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:48:56,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:48:56,116 INFO L93 Difference]: Finished difference Result 311 states and 367 transitions. [2022-11-19 06:48:56,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:48:56,126 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-19 06:48:56,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:48:56,128 INFO L225 Difference]: With dead ends: 311 [2022-11-19 06:48:56,128 INFO L226 Difference]: Without dead ends: 309 [2022-11-19 06:48:56,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:48:56,130 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 139 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-19 06:48:56,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 531 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-19 06:48:56,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-11-19 06:48:56,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 299. [2022-11-19 06:48:56,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 255 states have (on average 1.2352941176470589) internal successors, (315), 270 states have internal predecessors, (315), 24 states have call successors, (24), 7 states have call predecessors, (24), 6 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2022-11-19 06:48:56,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 363 transitions. [2022-11-19 06:48:56,177 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 363 transitions. Word has length 18 [2022-11-19 06:48:56,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:48:56,179 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 363 transitions. [2022-11-19 06:48:56,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:48:56,179 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 363 transitions. [2022-11-19 06:48:56,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-19 06:48:56,181 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:48:56,181 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:48:56,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 06:48:56,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:48:56,388 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-19 06:48:56,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:48:56,388 INFO L85 PathProgramCache]: Analyzing trace with hash 887320049, now seen corresponding path program 1 times [2022-11-19 06:48:56,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:48:56,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224386035] [2022-11-19 06:48:56,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:48:56,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:48:56,462 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:48:56,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1452119449] [2022-11-19 06:48:56,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:48:56,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:48:56,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:48:56,465 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:48:56,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 06:48:56,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:48:56,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 06:48:56,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:48:56,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:48:56,806 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:48:56,806 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:48:56,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224386035] [2022-11-19 06:48:56,806 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:48:56,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452119449] [2022-11-19 06:48:56,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452119449] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:48:56,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:48:56,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:48:56,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126409639] [2022-11-19 06:48:56,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:48:56,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:48:56,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:48:56,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:48:56,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:48:56,809 INFO L87 Difference]: Start difference. First operand 299 states and 363 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:48:58,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:48:58,242 INFO L93 Difference]: Finished difference Result 537 states and 655 transitions. [2022-11-19 06:48:58,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:48:58,246 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-19 06:48:58,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:48:58,252 INFO L225 Difference]: With dead ends: 537 [2022-11-19 06:48:58,252 INFO L226 Difference]: Without dead ends: 535 [2022-11-19 06:48:58,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:48:58,254 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 174 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:48:58,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 538 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-19 06:48:58,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2022-11-19 06:48:58,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 524. [2022-11-19 06:48:58,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 459 states have (on average 1.2352941176470589) internal successors, (567), 477 states have internal predecessors, (567), 41 states have call successors, (41), 13 states have call predecessors, (41), 10 states have return successors, (44), 34 states have call predecessors, (44), 41 states have call successors, (44) [2022-11-19 06:48:58,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 652 transitions. [2022-11-19 06:48:58,293 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 652 transitions. Word has length 19 [2022-11-19 06:48:58,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:48:58,293 INFO L495 AbstractCegarLoop]: Abstraction has 524 states and 652 transitions. [2022-11-19 06:48:58,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:48:58,294 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 652 transitions. [2022-11-19 06:48:58,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-19 06:48:58,295 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:48:58,295 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:48:58,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 06:48:58,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:48:58,502 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-19 06:48:58,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:48:58,503 INFO L85 PathProgramCache]: Analyzing trace with hash 310210136, now seen corresponding path program 1 times [2022-11-19 06:48:58,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:48:58,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632986871] [2022-11-19 06:48:58,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:48:58,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:48:58,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:48:58,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:48:58,997 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:48:58,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632986871] [2022-11-19 06:48:58,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632986871] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:48:59,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:48:59,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:48:59,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980543626] [2022-11-19 06:48:59,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:48:59,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:48:59,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:48:59,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:48:59,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:48:59,009 INFO L87 Difference]: Start difference. First operand 524 states and 652 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:49:01,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 06:49:01,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:49:01,462 INFO L93 Difference]: Finished difference Result 871 states and 1093 transitions. [2022-11-19 06:49:01,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:49:01,465 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-19 06:49:01,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:49:01,469 INFO L225 Difference]: With dead ends: 871 [2022-11-19 06:49:01,469 INFO L226 Difference]: Without dead ends: 702 [2022-11-19 06:49:01,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:49:01,472 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 67 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:49:01,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 489 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-19 06:49:01,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2022-11-19 06:49:01,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 524. [2022-11-19 06:49:01,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 459 states have (on average 1.233115468409586) internal successors, (566), 477 states have internal predecessors, (566), 41 states have call successors, (41), 13 states have call predecessors, (41), 10 states have return successors, (44), 34 states have call predecessors, (44), 41 states have call successors, (44) [2022-11-19 06:49:01,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 651 transitions. [2022-11-19 06:49:01,514 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 651 transitions. Word has length 24 [2022-11-19 06:49:01,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:49:01,515 INFO L495 AbstractCegarLoop]: Abstraction has 524 states and 651 transitions. [2022-11-19 06:49:01,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:49:01,515 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 651 transitions. [2022-11-19 06:49:01,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 06:49:01,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:49:01,516 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:49:01,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 06:49:01,517 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting alt_bzeroErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-19 06:49:01,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:49:01,517 INFO L85 PathProgramCache]: Analyzing trace with hash 194511926, now seen corresponding path program 1 times [2022-11-19 06:49:01,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:49:01,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919701115] [2022-11-19 06:49:01,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:49:01,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:49:01,554 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:49:01,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1089950725] [2022-11-19 06:49:01,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:49:01,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:49:01,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:49:01,560 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:49:01,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 06:49:01,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:49:01,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 06:49:01,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:49:01,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:49:01,910 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:49:01,911 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:49:01,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919701115] [2022-11-19 06:49:01,911 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:49:01,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089950725] [2022-11-19 06:49:01,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089950725] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:49:01,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:49:01,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 06:49:01,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808848376] [2022-11-19 06:49:01,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:49:01,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:49:01,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:49:01,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:49:01,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:49:01,918 INFO L87 Difference]: Start difference. First operand 524 states and 651 transitions. Second operand has 3 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 06:49:03,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:49:03,414 INFO L93 Difference]: Finished difference Result 550 states and 671 transitions. [2022-11-19 06:49:03,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:49:03,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-11-19 06:49:03,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:49:03,423 INFO L225 Difference]: With dead ends: 550 [2022-11-19 06:49:03,423 INFO L226 Difference]: Without dead ends: 549 [2022-11-19 06:49:03,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:49:03,425 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 144 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-19 06:49:03,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 361 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-19 06:49:03,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-11-19 06:49:03,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 539. [2022-11-19 06:49:03,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 469 states have (on average 1.2302771855010661) internal successors, (577), 488 states have internal predecessors, (577), 44 states have call successors, (44), 15 states have call predecessors, (44), 12 states have return successors, (47), 37 states have call predecessors, (47), 44 states have call successors, (47) [2022-11-19 06:49:03,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 668 transitions. [2022-11-19 06:49:03,481 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 668 transitions. Word has length 27 [2022-11-19 06:49:03,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:49:03,481 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 668 transitions. [2022-11-19 06:49:03,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 06:49:03,482 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 668 transitions. [2022-11-19 06:49:03,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-19 06:49:03,484 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:49:03,485 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:49:03,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 06:49:03,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:49:03,692 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting alt_bzeroErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-19 06:49:03,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:49:03,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1734902471, now seen corresponding path program 1 times [2022-11-19 06:49:03,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:49:03,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615556115] [2022-11-19 06:49:03,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:49:03,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:49:03,724 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:49:03,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [654930028] [2022-11-19 06:49:03,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:49:03,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:49:03,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:49:03,726 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:49:03,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 06:49:04,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:49:04,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 06:49:04,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:49:04,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:49:04,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:49:04,136 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:49:04,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615556115] [2022-11-19 06:49:04,137 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:49:04,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654930028] [2022-11-19 06:49:04,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654930028] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:49:04,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:49:04,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 06:49:04,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611858501] [2022-11-19 06:49:04,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:49:04,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:49:04,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:49:04,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:49:04,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:49:04,141 INFO L87 Difference]: Start difference. First operand 539 states and 668 transitions. Second operand has 3 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 06:49:05,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 06:49:05,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:49:05,547 INFO L93 Difference]: Finished difference Result 539 states and 668 transitions. [2022-11-19 06:49:05,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:49:05,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-11-19 06:49:05,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:49:05,556 INFO L225 Difference]: With dead ends: 539 [2022-11-19 06:49:05,556 INFO L226 Difference]: Without dead ends: 538 [2022-11-19 06:49:05,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:49:05,558 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 175 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:49:05,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 173 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-19 06:49:05,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-11-19 06:49:05,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2022-11-19 06:49:05,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 469 states have (on average 1.2260127931769722) internal successors, (575), 487 states have internal predecessors, (575), 44 states have call successors, (44), 15 states have call predecessors, (44), 12 states have return successors, (47), 37 states have call predecessors, (47), 44 states have call successors, (47) [2022-11-19 06:49:05,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 666 transitions. [2022-11-19 06:49:05,589 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 666 transitions. Word has length 28 [2022-11-19 06:49:05,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:49:05,590 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 666 transitions. [2022-11-19 06:49:05,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 06:49:05,590 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 666 transitions. [2022-11-19 06:49:05,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-19 06:49:05,592 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:49:05,592 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:49:05,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 06:49:05,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-19 06:49:05,793 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-19 06:49:05,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:49:05,794 INFO L85 PathProgramCache]: Analyzing trace with hash 407611559, now seen corresponding path program 1 times [2022-11-19 06:49:05,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:49:05,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258321932] [2022-11-19 06:49:05,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:49:05,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:49:05,908 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:49:05,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1829233209] [2022-11-19 06:49:05,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:49:05,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:49:05,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:49:05,910 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:49:05,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 06:49:06,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:49:06,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 1600 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 06:49:06,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:49:06,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:49:06,802 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:49:06,802 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:49:06,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258321932] [2022-11-19 06:49:06,802 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:49:06,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829233209] [2022-11-19 06:49:06,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829233209] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:49:06,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:49:06,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:49:06,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874661027] [2022-11-19 06:49:06,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:49:06,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:49:06,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:49:06,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:49:06,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:49:06,805 INFO L87 Difference]: Start difference. First operand 538 states and 666 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:49:09,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 06:49:09,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:49:09,412 INFO L93 Difference]: Finished difference Result 1000 states and 1234 transitions. [2022-11-19 06:49:09,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:49:09,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-19 06:49:09,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:49:09,417 INFO L225 Difference]: With dead ends: 1000 [2022-11-19 06:49:09,418 INFO L226 Difference]: Without dead ends: 467 [2022-11-19 06:49:09,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:49:09,420 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 68 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-19 06:49:09,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 328 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-19 06:49:09,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2022-11-19 06:49:09,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 415. [2022-11-19 06:49:09,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 363 states have (on average 1.2148760330578512) internal successors, (441), 379 states have internal predecessors, (441), 30 states have call successors, (30), 11 states have call predecessors, (30), 9 states have return successors, (33), 26 states have call predecessors, (33), 30 states have call successors, (33) [2022-11-19 06:49:09,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 504 transitions. [2022-11-19 06:49:09,445 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 504 transitions. Word has length 28 [2022-11-19 06:49:09,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:49:09,445 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 504 transitions. [2022-11-19 06:49:09,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:49:09,446 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 504 transitions. [2022-11-19 06:49:09,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-19 06:49:09,446 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:49:09,447 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:49:09,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-19 06:49:09,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:49:09,656 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-19 06:49:09,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:49:09,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1908132634, now seen corresponding path program 1 times [2022-11-19 06:49:09,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:49:09,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716050524] [2022-11-19 06:49:09,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:49:09,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:49:09,696 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:49:09,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [821456164] [2022-11-19 06:49:09,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:49:09,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:49:09,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:49:09,698 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:49:09,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f54909-0013-4c17-8ea5-7734cde156ea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 06:49:10,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:49:10,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 06:49:10,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:49:10,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:49:10,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:49:10,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:49:10,510 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:49:10,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716050524] [2022-11-19 06:49:10,511 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:49:10,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821456164] [2022-11-19 06:49:10,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821456164] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:49:10,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [247060756] [2022-11-19 06:49:10,531 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2022-11-19 06:49:10,532 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:49:10,535 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:49:10,541 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:49:10,541 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:49:10,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-19 06:49:10,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-19 06:49:10,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:10,636 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-19 06:49:10,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 38 [2022-11-19 06:49:10,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:10,655 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:10,684 INFO L321 Elim1Store]: treesize reduction 31, result has 35.4 percent of original size [2022-11-19 06:49:10,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 93 [2022-11-19 06:49:10,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-19 06:49:10,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:10,734 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:10,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 21 [2022-11-19 06:49:10,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 06:49:10,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:10,852 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-19 06:49:10,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-11-19 06:49:10,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:10,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:10,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:10,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:10,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:10,983 INFO L321 Elim1Store]: treesize reduction 34, result has 47.7 percent of original size [2022-11-19 06:49:10,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 93 treesize of output 105 [2022-11-19 06:49:11,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-19 06:49:11,044 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:11,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 87 [2022-11-19 06:49:11,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:11,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:11,146 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-19 06:49:11,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 61 [2022-11-19 06:49:11,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-19 06:49:11,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-19 06:49:11,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:11,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:11,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 40 [2022-11-19 06:49:11,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 06:49:11,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 06:49:11,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:11,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:11,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:11,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:11,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 345 treesize of output 269 [2022-11-19 06:49:11,417 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 06:49:11,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:11,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 34 [2022-11-19 06:49:12,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-19 06:49:12,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 9897273 treesize of output 8253295 [2022-11-19 06:49:12,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 340 treesize of output 272 [2022-11-19 06:49:12,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:12,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 28 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 8253076 treesize of output 5376288 [2022-11-19 06:49:12,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-19 06:49:13,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-19 06:49:13,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-19 06:49:13,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:13,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:13,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:13,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:13,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 93836963 treesize of output 72466133 [2022-11-19 06:49:13,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:13,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:13,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:13,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:13,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 92604037 treesize of output 72466145 [2022-11-19 06:49:13,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:13,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:13,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:13,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:13,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:13,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:13,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:13,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:13,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:13,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:13,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:13,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:13,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:13,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:13,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:13,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:13,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:13,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:13,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:13,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:13,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:13,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:13,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:13,514 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:49:13,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 36 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 8664067 treesize of output 6198246 [2022-11-19 06:49:13,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2022-11-19 06:49:13,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-19 06:49:13,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2022-11-19 06:49:13,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-19 06:49:13,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-19 06:49:14,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:14,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:14,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:14,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:14,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 93836992 treesize of output 72466144 [2022-11-19 06:49:14,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:14,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:14,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:14,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:14,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:14,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:14,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:14,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:14,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:14,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:14,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:14,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:14,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:14,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:14,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:49:14,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 8253064 treesize of output 5787194 [2022-11-19 06:49:14,391 INFO L173 IndexEqualityManager]: detected equality via solver