./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 2329fc70 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_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh/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_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh --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-2329fc7 [2022-12-14 15:33:17,075 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 15:33:17,077 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 15:33:17,089 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 15:33:17,089 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 15:33:17,090 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 15:33:17,091 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 15:33:17,092 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 15:33:17,093 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 15:33:17,093 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 15:33:17,094 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 15:33:17,095 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 15:33:17,095 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 15:33:17,096 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 15:33:17,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 15:33:17,097 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 15:33:17,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 15:33:17,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 15:33:17,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 15:33:17,101 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 15:33:17,102 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 15:33:17,102 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 15:33:17,104 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 15:33:17,104 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 15:33:17,106 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 15:33:17,106 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 15:33:17,107 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 15:33:17,107 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 15:33:17,108 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 15:33:17,108 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 15:33:17,108 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 15:33:17,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 15:33:17,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 15:33:17,110 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 15:33:17,110 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 15:33:17,111 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 15:33:17,111 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 15:33:17,112 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 15:33:17,112 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 15:33:17,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 15:33:17,113 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 15:33:17,113 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 15:33:17,127 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 15:33:17,127 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 15:33:17,127 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 15:33:17,131 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 15:33:17,131 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 15:33:17,132 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 15:33:17,132 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 15:33:17,132 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 15:33:17,132 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 15:33:17,132 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 15:33:17,132 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 15:33:17,133 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 15:33:17,133 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 15:33:17,133 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 15:33:17,133 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 15:33:17,133 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 15:33:17,133 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 15:33:17,134 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 15:33:17,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 15:33:17,134 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 15:33:17,135 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 15:33:17,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 15:33:17,135 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 15:33:17,135 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 15:33:17,135 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 15:33:17,135 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 15:33:17,136 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 15:33:17,136 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 15:33:17,136 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 15:33:17,136 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 15:33:17,136 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 15:33:17,136 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 15:33:17,137 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 15:33:17,137 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 15:33:17,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:33:17,137 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 15:33:17,137 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 15:33:17,137 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 15:33:17,138 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 15:33:17,138 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 15:33:17,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 15:33:17,138 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 15:33:17,138 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 15:33:17,138 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_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb48026e7f870ff561a4cdd394c24cb5edb1d0f2fc8e8ef2bffe0b7b8438fda4 [2022-12-14 15:33:17,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 15:33:17,321 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 15:33:17,323 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 15:33:17,324 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 15:33:17,324 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 15:33:17,325 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i [2022-12-14 15:33:19,908 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 15:33:20,144 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 15:33:20,144 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i [2022-12-14 15:33:20,158 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh/data/8086d9991/57764150a0d8458ca0e84733a5d48065/FLAG2c00af792 [2022-12-14 15:33:20,170 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh/data/8086d9991/57764150a0d8458ca0e84733a5d48065 [2022-12-14 15:33:20,172 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 15:33:20,174 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 15:33:20,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 15:33:20,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 15:33:20,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 15:33:20,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:33:20" (1/1) ... [2022-12-14 15:33:20,179 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@417bc3a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:33:20, skipping insertion in model container [2022-12-14 15:33:20,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:33:20" (1/1) ... [2022-12-14 15:33:20,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 15:33:20,229 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 15:33:20,665 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44118,44131] [2022-12-14 15:33:20,676 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44660,44673] [2022-12-14 15:33:20,679 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 15:33:20,766 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56247,56260] [2022-12-14 15:33:20,767 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56368,56381] [2022-12-14 15:33:20,782 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:33:20,793 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 15:33:20,828 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44118,44131] [2022-12-14 15:33:20,830 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44660,44673] [2022-12-14 15:33:20,831 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 15:33:20,887 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56247,56260] [2022-12-14 15:33:20,888 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56368,56381] [2022-12-14 15:33:20,898 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:33:20,942 INFO L208 MainTranslator]: Completed translation [2022-12-14 15:33:20,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:33:20 WrapperNode [2022-12-14 15:33:20,942 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 15:33:20,943 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 15:33:20,943 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 15:33:20,943 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 15:33:20,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:33:20" (1/1) ... [2022-12-14 15:33:20,992 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:33:20" (1/1) ... [2022-12-14 15:33:21,057 INFO L138 Inliner]: procedures = 282, calls = 347, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1205 [2022-12-14 15:33:21,058 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 15:33:21,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 15:33:21,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 15:33:21,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 15:33:21,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:33:20" (1/1) ... [2022-12-14 15:33:21,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:33:20" (1/1) ... [2022-12-14 15:33:21,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:33:20" (1/1) ... [2022-12-14 15:33:21,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:33:20" (1/1) ... [2022-12-14 15:33:21,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:33:20" (1/1) ... [2022-12-14 15:33:21,138 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:33:20" (1/1) ... [2022-12-14 15:33:21,142 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:33:20" (1/1) ... [2022-12-14 15:33:21,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:33:20" (1/1) ... [2022-12-14 15:33:21,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 15:33:21,159 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 15:33:21,159 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 15:33:21,160 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 15:33:21,160 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:33:20" (1/1) ... [2022-12-14 15:33:21,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:33:21,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:33:21,187 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 15:33:21,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 15:33:21,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 15:33:21,219 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-12-14 15:33:21,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 15:33:21,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 15:33:21,219 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2022-12-14 15:33:21,219 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2022-12-14 15:33:21,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 15:33:21,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 15:33:21,220 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 15:33:21,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 15:33:21,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 15:33:21,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 15:33:21,220 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2022-12-14 15:33:21,220 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2022-12-14 15:33:21,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 15:33:21,220 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2022-12-14 15:33:21,220 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2022-12-14 15:33:21,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 15:33:21,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 15:33:21,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 15:33:21,421 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 15:33:21,423 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 15:33:22,476 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 15:33:22,765 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 15:33:22,765 INFO L300 CfgBuilder]: Removed 72 assume(true) statements. [2022-12-14 15:33:22,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:33:22 BoogieIcfgContainer [2022-12-14 15:33:22,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 15:33:22,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 15:33:22,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 15:33:22,771 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 15:33:22,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:33:20" (1/3) ... [2022-12-14 15:33:22,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b566cf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:33:22, skipping insertion in model container [2022-12-14 15:33:22,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:33:20" (2/3) ... [2022-12-14 15:33:22,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b566cf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:33:22, skipping insertion in model container [2022-12-14 15:33:22,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:33:22" (3/3) ... [2022-12-14 15:33:22,773 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test6-2.i [2022-12-14 15:33:22,787 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 15:33:22,787 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-12-14 15:33:22,826 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 15:33:22,831 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;@348625, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 15:33:22,832 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-12-14 15:33:22,836 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) [2022-12-14 15:33:22,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 15:33:22,841 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:33:22,842 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 15:33:22,843 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)] === [2022-12-14 15:33:22,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:33:22,848 INFO L85 PathProgramCache]: Analyzing trace with hash 31179180, now seen corresponding path program 1 times [2022-12-14 15:33:22,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:33:22,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319815417] [2022-12-14 15:33:22,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:33:22,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:33:22,958 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 15:33:22,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2053080239] [2022-12-14 15:33:22,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:33:22,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:33:22,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:33:22,960 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:33:22,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 15:33:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:33:23,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-14 15:33:23,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:33:23,165 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 [2022-12-14 15:33:23,197 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-12-14 15:33:23,198 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 [2022-12-14 15:33:23,207 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 [2022-12-14 15:33:23,218 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 [2022-12-14 15:33:23,309 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 [2022-12-14 15:33:23,312 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 [2022-12-14 15:33:23,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:23,344 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 [2022-12-14 15:33:23,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:33:23,351 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 15:33:23,351 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:33:23,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319815417] [2022-12-14 15:33:23,351 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 15:33:23,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053080239] [2022-12-14 15:33:23,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053080239] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:33:23,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:33:23,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 15:33:23,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899024470] [2022-12-14 15:33:23,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:33:23,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 15:33:23,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:33:23,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 15:33:23,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:33:23,381 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) [2022-12-14 15:33:24,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:33:24,485 INFO L93 Difference]: Finished difference Result 416 states and 678 transitions. [2022-12-14 15:33:24,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 15:33:24,487 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 [2022-12-14 15:33:24,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:33:24,495 INFO L225 Difference]: With dead ends: 416 [2022-12-14 15:33:24,495 INFO L226 Difference]: Without dead ends: 240 [2022-12-14 15:33:24,497 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 [2022-12-14 15:33:24,500 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 68 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:33:24,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 462 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-14 15:33:24,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-12-14 15:33:24,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 177. [2022-12-14 15:33:24,547 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) [2022-12-14 15:33:24,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 209 transitions. [2022-12-14 15:33:24,551 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 209 transitions. Word has length 4 [2022-12-14 15:33:24,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:33:24,551 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 209 transitions. [2022-12-14 15:33:24,552 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) [2022-12-14 15:33:24,552 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 209 transitions. [2022-12-14 15:33:24,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 15:33:24,553 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:33:24,554 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:33:24,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 15:33:24,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-14 15:33:24,756 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)] === [2022-12-14 15:33:24,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:33:24,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1356850095, now seen corresponding path program 1 times [2022-12-14 15:33:24,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:33:24,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952079892] [2022-12-14 15:33:24,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:33:24,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:33:24,812 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 15:33:24,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1100834327] [2022-12-14 15:33:24,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:33:24,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:33:24,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:33:24,814 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:33:24,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 15:33:24,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:33:24,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 15:33:24,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:33:25,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:33:25,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 15:33:25,022 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:33:25,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952079892] [2022-12-14 15:33:25,022 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 15:33:25,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100834327] [2022-12-14 15:33:25,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100834327] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:33:25,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:33:25,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 15:33:25,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537134473] [2022-12-14 15:33:25,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:33:25,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 15:33:25,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:33:25,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 15:33:25,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:33:25,024 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) [2022-12-14 15:33:26,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:33:26,170 INFO L93 Difference]: Finished difference Result 337 states and 402 transitions. [2022-12-14 15:33:26,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 15:33:26,175 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 [2022-12-14 15:33:26,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:33:26,176 INFO L225 Difference]: With dead ends: 337 [2022-12-14 15:33:26,176 INFO L226 Difference]: Without dead ends: 335 [2022-12-14 15:33:26,177 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 [2022-12-14 15:33:26,177 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 175 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 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, 1.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:33:26,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 538 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-14 15:33:26,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-12-14 15:33:26,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 323. [2022-12-14 15:33:26,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 275 states have (on average 1.24) internal successors, (341), 291 states have internal predecessors, (341), 27 states have call successors, (27), 8 states have call predecessors, (27), 7 states have return successors, (30), 24 states have call predecessors, (30), 27 states have call successors, (30) [2022-12-14 15:33:26,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 398 transitions. [2022-12-14 15:33:26,192 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 398 transitions. Word has length 18 [2022-12-14 15:33:26,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:33:26,192 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 398 transitions. [2022-12-14 15:33:26,192 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) [2022-12-14 15:33:26,193 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 398 transitions. [2022-12-14 15:33:26,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 15:33:26,193 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:33:26,193 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:33:26,198 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 15:33:26,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:33:26,395 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)] === [2022-12-14 15:33:26,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:33:26,397 INFO L85 PathProgramCache]: Analyzing trace with hash 887320049, now seen corresponding path program 1 times [2022-12-14 15:33:26,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:33:26,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119310734] [2022-12-14 15:33:26,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:33:26,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:33:26,448 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 15:33:26,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [109186542] [2022-12-14 15:33:26,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:33:26,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:33:26,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:33:26,450 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:33:26,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 15:33:26,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:33:26,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 15:33:26,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:33:26,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:33:26,659 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 15:33:26,659 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:33:26,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119310734] [2022-12-14 15:33:26,660 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 15:33:26,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109186542] [2022-12-14 15:33:26,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109186542] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:33:26,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:33:26,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 15:33:26,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601444653] [2022-12-14 15:33:26,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:33:26,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 15:33:26,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:33:26,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 15:33:26,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:33:26,662 INFO L87 Difference]: Start difference. First operand 323 states and 398 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) [2022-12-14 15:33:28,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:33:28,504 INFO L93 Difference]: Finished difference Result 533 states and 652 transitions. [2022-12-14 15:33:28,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 15:33:28,505 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 [2022-12-14 15:33:28,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:33:28,507 INFO L225 Difference]: With dead ends: 533 [2022-12-14 15:33:28,507 INFO L226 Difference]: Without dead ends: 531 [2022-12-14 15:33:28,507 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 [2022-12-14 15:33:28,508 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 136 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-14 15:33:28,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 532 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-14 15:33:28,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2022-12-14 15:33:28,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 523. [2022-12-14 15:33:28,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 458 states have (on average 1.2336244541484715) internal successors, (565), 476 states have internal predecessors, (565), 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) [2022-12-14 15:33:28,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 650 transitions. [2022-12-14 15:33:28,526 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 650 transitions. Word has length 19 [2022-12-14 15:33:28,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:33:28,527 INFO L495 AbstractCegarLoop]: Abstraction has 523 states and 650 transitions. [2022-12-14 15:33:28,527 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) [2022-12-14 15:33:28,527 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 650 transitions. [2022-12-14 15:33:28,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 15:33:28,528 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:33:28,528 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] [2022-12-14 15:33:28,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 15:33:28,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:33:28,729 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)] === [2022-12-14 15:33:28,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:33:28,731 INFO L85 PathProgramCache]: Analyzing trace with hash 310210136, now seen corresponding path program 1 times [2022-12-14 15:33:28,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:33:28,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80493742] [2022-12-14 15:33:28,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:33:28,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:33:28,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:33:29,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:33:29,044 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:33:29,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80493742] [2022-12-14 15:33:29,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80493742] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:33:29,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:33:29,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:33:29,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928301833] [2022-12-14 15:33:29,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:33:29,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 15:33:29,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:33:29,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 15:33:29,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:33:29,046 INFO L87 Difference]: Start difference. First operand 523 states and 650 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) [2022-12-14 15:33:30,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:33:30,156 INFO L93 Difference]: Finished difference Result 869 states and 1090 transitions. [2022-12-14 15:33:30,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 15:33:30,159 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 [2022-12-14 15:33:30,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:33:30,162 INFO L225 Difference]: With dead ends: 869 [2022-12-14 15:33:30,162 INFO L226 Difference]: Without dead ends: 701 [2022-12-14 15:33:30,163 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 [2022-12-14 15:33:30,164 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 67 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:33:30,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 489 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-14 15:33:30,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2022-12-14 15:33:30,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 523. [2022-12-14 15:33:30,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 458 states have (on average 1.2314410480349345) internal successors, (564), 476 states have internal predecessors, (564), 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) [2022-12-14 15:33:30,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 649 transitions. [2022-12-14 15:33:30,191 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 649 transitions. Word has length 24 [2022-12-14 15:33:30,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:33:30,192 INFO L495 AbstractCegarLoop]: Abstraction has 523 states and 649 transitions. [2022-12-14 15:33:30,192 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) [2022-12-14 15:33:30,192 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 649 transitions. [2022-12-14 15:33:30,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-14 15:33:30,193 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:33:30,193 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] [2022-12-14 15:33:30,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 15:33:30,193 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)] === [2022-12-14 15:33:30,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:33:30,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1082015607, now seen corresponding path program 1 times [2022-12-14 15:33:30,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:33:30,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651509180] [2022-12-14 15:33:30,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:33:30,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:33:30,216 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 15:33:30,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1683179669] [2022-12-14 15:33:30,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:33:30,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:33:30,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:33:30,217 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:33:30,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 15:33:30,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:33:30,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 15:33:30,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:33:30,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:33:30,446 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 15:33:30,446 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:33:30,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651509180] [2022-12-14 15:33:30,446 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 15:33:30,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683179669] [2022-12-14 15:33:30,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683179669] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:33:30,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:33:30,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 15:33:30,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913150835] [2022-12-14 15:33:30,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:33:30,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:33:30,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:33:30,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:33:30,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:33:30,448 INFO L87 Difference]: Start difference. First operand 523 states and 649 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) [2022-12-14 15:33:31,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:33:31,152 INFO L93 Difference]: Finished difference Result 523 states and 649 transitions. [2022-12-14 15:33:31,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:33:31,154 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 [2022-12-14 15:33:31,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:33:31,157 INFO L225 Difference]: With dead ends: 523 [2022-12-14 15:33:31,157 INFO L226 Difference]: Without dead ends: 522 [2022-12-14 15:33:31,157 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 [2022-12-14 15:33:31,158 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 176 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 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, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 15:33:31,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 173 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 15:33:31,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2022-12-14 15:33:31,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 522. [2022-12-14 15:33:31,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 458 states have (on average 1.2270742358078603) internal successors, (562), 475 states have internal predecessors, (562), 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) [2022-12-14 15:33:31,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 647 transitions. [2022-12-14 15:33:31,181 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 647 transitions. Word has length 27 [2022-12-14 15:33:31,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:33:31,181 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 647 transitions. [2022-12-14 15:33:31,182 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) [2022-12-14 15:33:31,182 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 647 transitions. [2022-12-14 15:33:31,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-14 15:33:31,182 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:33:31,182 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] [2022-12-14 15:33:31,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-14 15:33:31,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:33:31,383 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)] === [2022-12-14 15:33:31,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:33:31,384 INFO L85 PathProgramCache]: Analyzing trace with hash -817254490, now seen corresponding path program 1 times [2022-12-14 15:33:31,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:33:31,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782477904] [2022-12-14 15:33:31,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:33:31,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:33:31,407 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 15:33:31,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1896289520] [2022-12-14 15:33:31,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:33:31,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:33:31,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:33:31,408 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:33:31,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 15:33:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:33:31,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 15:33:31,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:33:31,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:33:31,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 15:33:31,630 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:33:31,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782477904] [2022-12-14 15:33:31,630 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 15:33:31,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896289520] [2022-12-14 15:33:31,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896289520] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:33:31,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:33:31,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 15:33:31,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219571407] [2022-12-14 15:33:31,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:33:31,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:33:31,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:33:31,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:33:31,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:33:31,632 INFO L87 Difference]: Start difference. First operand 522 states and 647 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) [2022-12-14 15:33:32,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:33:32,275 INFO L93 Difference]: Finished difference Result 547 states and 665 transitions. [2022-12-14 15:33:32,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:33:32,278 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 [2022-12-14 15:33:32,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:33:32,280 INFO L225 Difference]: With dead ends: 547 [2022-12-14 15:33:32,280 INFO L226 Difference]: Without dead ends: 546 [2022-12-14 15:33:32,281 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 [2022-12-14 15:33:32,281 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 142 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 15:33:32,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 361 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 15:33:32,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2022-12-14 15:33:32,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 537. [2022-12-14 15:33:32,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 468 states have (on average 1.2243589743589745) internal successors, (573), 486 states have internal predecessors, (573), 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) [2022-12-14 15:33:32,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 664 transitions. [2022-12-14 15:33:32,307 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 664 transitions. Word has length 28 [2022-12-14 15:33:32,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:33:32,308 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 664 transitions. [2022-12-14 15:33:32,308 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) [2022-12-14 15:33:32,308 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 664 transitions. [2022-12-14 15:33:32,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-14 15:33:32,309 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:33:32,309 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] [2022-12-14 15:33:32,314 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 15:33:32,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 15:33:32,511 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)] === [2022-12-14 15:33:32,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:33:32,512 INFO L85 PathProgramCache]: Analyzing trace with hash 407611559, now seen corresponding path program 1 times [2022-12-14 15:33:32,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:33:32,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123339085] [2022-12-14 15:33:32,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:33:32,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:33:32,611 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 15:33:32,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1571667191] [2022-12-14 15:33:32,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:33:32,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:33:32,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:33:32,613 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:33:32,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 15:33:33,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:33:33,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 1600 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 15:33:33,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:33:33,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:33:33,108 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 15:33:33,108 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:33:33,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123339085] [2022-12-14 15:33:33,108 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 15:33:33,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571667191] [2022-12-14 15:33:33,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571667191] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:33:33,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:33:33,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 15:33:33,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156104613] [2022-12-14 15:33:33,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:33:33,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:33:33,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:33:33,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:33:33,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:33:33,110 INFO L87 Difference]: Start difference. First operand 537 states and 664 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) [2022-12-14 15:33:35,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 15:33:35,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:33:35,671 INFO L93 Difference]: Finished difference Result 999 states and 1231 transitions. [2022-12-14 15:33:35,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:33:35,673 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 [2022-12-14 15:33:35,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:33:35,674 INFO L225 Difference]: With dead ends: 999 [2022-12-14 15:33:35,675 INFO L226 Difference]: Without dead ends: 467 [2022-12-14 15:33:35,675 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 [2022-12-14 15:33:35,676 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 68 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-14 15:33:35,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 344 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 96 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-12-14 15:33:35,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2022-12-14 15:33:35,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 415. [2022-12-14 15:33:35,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 363 states have (on average 1.2121212121212122) internal successors, (440), 379 states have internal predecessors, (440), 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) [2022-12-14 15:33:35,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 503 transitions. [2022-12-14 15:33:35,688 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 503 transitions. Word has length 28 [2022-12-14 15:33:35,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:33:35,688 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 503 transitions. [2022-12-14 15:33:35,689 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) [2022-12-14 15:33:35,689 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 503 transitions. [2022-12-14 15:33:35,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-12-14 15:33:35,689 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:33:35,689 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:33:35,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 15:33:35,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:33:35,891 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-14 15:33:35,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:33:35,892 INFO L85 PathProgramCache]: Analyzing trace with hash -357382328, now seen corresponding path program 1 times [2022-12-14 15:33:35,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:33:35,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736361580] [2022-12-14 15:33:35,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:33:35,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:33:35,959 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 15:33:35,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1411641823] [2022-12-14 15:33:35,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:33:35,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:33:35,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:33:35,961 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:33:35,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a52fe-0f55-4631-898f-6608bf27b83a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 15:33:36,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:33:36,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 15:33:36,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:33:36,325 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:33:36,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:33:36,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:33:36,428 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:33:36,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736361580] [2022-12-14 15:33:36,428 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 15:33:36,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411641823] [2022-12-14 15:33:36,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411641823] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:33:36,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [758396713] [2022-12-14 15:33:36,443 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2022-12-14 15:33:36,443 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:33:36,445 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:33:36,449 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:33:36,449 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 15:33:36,479 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 [2022-12-14 15:33:36,484 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 [2022-12-14 15:33:36,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:36,507 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-12-14 15:33:36,507 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 [2022-12-14 15:33:36,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:36,517 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 15:33:36,533 INFO L321 Elim1Store]: treesize reduction 31, result has 35.4 percent of original size [2022-12-14 15:33:36,533 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 [2022-12-14 15:33:36,542 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 [2022-12-14 15:33:36,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:36,563 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 15:33:36,564 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 [2022-12-14 15:33:36,569 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 [2022-12-14 15:33:36,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:36,600 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 15:33:36,601 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 [2022-12-14 15:33:36,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:36,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:36,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:36,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:36,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:36,696 INFO L321 Elim1Store]: treesize reduction 34, result has 47.7 percent of original size [2022-12-14 15:33:36,697 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 [2022-12-14 15:33:36,719 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 [2022-12-14 15:33:36,742 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 15:33:36,743 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 [2022-12-14 15:33:36,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:36,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:36,817 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-12-14 15:33:36,817 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 [2022-12-14 15:33:36,833 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 [2022-12-14 15:33:36,845 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 [2022-12-14 15:33:36,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:36,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:36,859 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 [2022-12-14 15:33:36,972 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 [2022-12-14 15:33:36,980 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 [2022-12-14 15:33:36,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:36,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:36,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:36,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:36,997 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 [2022-12-14 15:33:37,036 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 15:33:37,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:37,060 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 [2022-12-14 15:33:37,708 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 [2022-12-14 15:33:37,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:37,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:37,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:37,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:37,730 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 [2022-12-14 15:33:37,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:37,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:37,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:37,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:37,794 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 [2022-12-14 15:33:37,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:37,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:37,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:37,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:37,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:37,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:37,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:37,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:37,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:37,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:37,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:37,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:37,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:37,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:37,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:37,893 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 [2022-12-14 15:33:37,964 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 [2022-12-14 15:33:38,078 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 [2022-12-14 15:33:38,090 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 [2022-12-14 15:33:38,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,119 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 [2022-12-14 15:33:38,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,155 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 [2022-12-14 15:33:38,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,347 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 15:33:38,348 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 [2022-12-14 15:33:38,624 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 [2022-12-14 15:33:38,627 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 [2022-12-14 15:33:38,630 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 [2022-12-14 15:33:38,636 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 [2022-12-14 15:33:38,641 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 [2022-12-14 15:33:38,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,726 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 [2022-12-14 15:33:38,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 15:33:38,811 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 [2022-12-14 15:33:38,929 INFO L173 IndexEqualityManager]: detected equality via solver