./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3608e31-c73c-4c03-826d-4c7009a80d04/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3608e31-c73c-4c03-826d-4c7009a80d04/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_c3608e31-c73c-4c03-826d-4c7009a80d04/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3608e31-c73c-4c03-826d-4c7009a80d04/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3608e31-c73c-4c03-826d-4c7009a80d04/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_c3608e31-c73c-4c03-826d-4c7009a80d04/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 1d2a98d270a821b4275b6b35f502458543f3a892fcdda158c69925a18d34f6cf --- 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 04:55:59,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 04:55:59,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 04:55:59,201 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 04:55:59,201 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 04:55:59,202 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 04:55:59,203 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 04:55:59,204 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 04:55:59,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 04:55:59,205 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 04:55:59,206 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 04:55:59,207 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 04:55:59,207 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 04:55:59,208 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 04:55:59,209 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 04:55:59,210 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 04:55:59,210 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 04:55:59,211 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 04:55:59,212 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 04:55:59,213 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 04:55:59,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 04:55:59,215 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 04:55:59,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 04:55:59,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 04:55:59,219 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 04:55:59,219 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 04:55:59,220 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 04:55:59,220 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 04:55:59,221 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 04:55:59,221 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 04:55:59,222 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 04:55:59,222 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 04:55:59,223 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 04:55:59,223 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 04:55:59,224 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 04:55:59,224 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 04:55:59,225 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 04:55:59,225 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 04:55:59,225 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 04:55:59,226 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 04:55:59,226 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 04:55:59,227 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3608e31-c73c-4c03-826d-4c7009a80d04/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 04:55:59,242 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 04:55:59,242 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 04:55:59,242 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 04:55:59,243 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 04:55:59,243 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 04:55:59,243 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 04:55:59,243 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 04:55:59,244 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 04:55:59,244 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 04:55:59,244 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 04:55:59,244 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 04:55:59,244 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 04:55:59,244 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 04:55:59,245 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 04:55:59,245 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 04:55:59,245 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 04:55:59,245 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 04:55:59,245 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 04:55:59,246 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 04:55:59,246 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 04:55:59,246 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 04:55:59,246 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 04:55:59,247 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 04:55:59,247 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 04:55:59,247 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 04:55:59,247 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 04:55:59,247 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 04:55:59,247 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 04:55:59,248 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 04:55:59,248 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 04:55:59,248 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 04:55:59,248 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 04:55:59,248 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 04:55:59,248 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 04:55:59,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:55:59,249 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 04:55:59,249 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 04:55:59,249 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 04:55:59,249 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 04:55:59,249 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 04:55:59,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 04:55:59,250 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 04:55:59,250 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 04:55:59,250 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_c3608e31-c73c-4c03-826d-4c7009a80d04/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3608e31-c73c-4c03-826d-4c7009a80d04/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d2a98d270a821b4275b6b35f502458543f3a892fcdda158c69925a18d34f6cf [2022-12-14 04:55:59,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 04:55:59,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 04:55:59,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 04:55:59,467 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 04:55:59,467 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 04:55:59,468 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3608e31-c73c-4c03-826d-4c7009a80d04/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i [2022-12-14 04:56:02,093 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 04:56:02,365 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 04:56:02,366 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3608e31-c73c-4c03-826d-4c7009a80d04/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i [2022-12-14 04:56:02,376 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3608e31-c73c-4c03-826d-4c7009a80d04/bin/utaipan-gh47qXpMRh/data/c46c68c9b/b35d7c27f0404ed38c2b57d0775251d6/FLAGb6555ef31 [2022-12-14 04:56:02,387 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3608e31-c73c-4c03-826d-4c7009a80d04/bin/utaipan-gh47qXpMRh/data/c46c68c9b/b35d7c27f0404ed38c2b57d0775251d6 [2022-12-14 04:56:02,389 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 04:56:02,390 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 04:56:02,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 04:56:02,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 04:56:02,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 04:56:02,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:56:02" (1/1) ... [2022-12-14 04:56:02,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69cafe8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:56:02, skipping insertion in model container [2022-12-14 04:56:02,396 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:56:02" (1/1) ... [2022-12-14 04:56:02,402 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 04:56:02,442 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 04:56:02,791 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_c3608e31-c73c-4c03-826d-4c7009a80d04/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44118,44131] [2022-12-14 04:56:02,799 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_c3608e31-c73c-4c03-826d-4c7009a80d04/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44660,44673] [2022-12-14 04:56:02,800 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 04:56:02,864 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_c3608e31-c73c-4c03-826d-4c7009a80d04/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56247,56260] [2022-12-14 04:56:02,865 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_c3608e31-c73c-4c03-826d-4c7009a80d04/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56368,56381] [2022-12-14 04:56:02,875 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:56:02,882 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 04:56:02,907 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_c3608e31-c73c-4c03-826d-4c7009a80d04/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44118,44131] [2022-12-14 04:56:02,909 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_c3608e31-c73c-4c03-826d-4c7009a80d04/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44660,44673] [2022-12-14 04:56:02,909 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 04:56:02,949 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_c3608e31-c73c-4c03-826d-4c7009a80d04/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56247,56260] [2022-12-14 04:56:02,949 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_c3608e31-c73c-4c03-826d-4c7009a80d04/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56368,56381] [2022-12-14 04:56:02,957 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:56:02,990 INFO L208 MainTranslator]: Completed translation [2022-12-14 04:56:02,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:56:02 WrapperNode [2022-12-14 04:56:02,991 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 04:56:02,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 04:56:02,991 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 04:56:02,991 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 04:56:02,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:56:02" (1/1) ... [2022-12-14 04:56:03,019 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:56:02" (1/1) ... [2022-12-14 04:56:03,060 INFO L138 Inliner]: procedures = 282, calls = 347, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1205 [2022-12-14 04:56:03,060 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 04:56:03,061 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 04:56:03,061 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 04:56:03,061 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 04:56:03,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:56:02" (1/1) ... [2022-12-14 04:56:03,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:56:02" (1/1) ... [2022-12-14 04:56:03,075 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:56:02" (1/1) ... [2022-12-14 04:56:03,075 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:56:02" (1/1) ... [2022-12-14 04:56:03,120 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:56:02" (1/1) ... [2022-12-14 04:56:03,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:56:02" (1/1) ... [2022-12-14 04:56:03,136 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:56:02" (1/1) ... [2022-12-14 04:56:03,140 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:56:02" (1/1) ... [2022-12-14 04:56:03,148 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 04:56:03,149 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 04:56:03,149 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 04:56:03,149 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 04:56:03,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:56:02" (1/1) ... [2022-12-14 04:56:03,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:56:03,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3608e31-c73c-4c03-826d-4c7009a80d04/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:56:03,173 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3608e31-c73c-4c03-826d-4c7009a80d04/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 04:56:03,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3608e31-c73c-4c03-826d-4c7009a80d04/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 04:56:03,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 04:56:03,200 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-12-14 04:56:03,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 04:56:03,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 04:56:03,200 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2022-12-14 04:56:03,200 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2022-12-14 04:56:03,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 04:56:03,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 04:56:03,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 04:56:03,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 04:56:03,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 04:56:03,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 04:56:03,201 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2022-12-14 04:56:03,201 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2022-12-14 04:56:03,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 04:56:03,201 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2022-12-14 04:56:03,201 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2022-12-14 04:56:03,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 04:56:03,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 04:56:03,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 04:56:03,383 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 04:56:03,386 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 04:56:04,464 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 04:56:04,795 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 04:56:04,795 INFO L300 CfgBuilder]: Removed 72 assume(true) statements. [2022-12-14 04:56:04,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:56:04 BoogieIcfgContainer [2022-12-14 04:56:04,798 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 04:56:04,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 04:56:04,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 04:56:04,803 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 04:56:04,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:56:02" (1/3) ... [2022-12-14 04:56:04,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18b415fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:56:04, skipping insertion in model container [2022-12-14 04:56:04,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:56:02" (2/3) ... [2022-12-14 04:56:04,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18b415fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:56:04, skipping insertion in model container [2022-12-14 04:56:04,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:56:04" (3/3) ... [2022-12-14 04:56:04,806 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test6-2.i [2022-12-14 04:56:04,820 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 04:56:04,820 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-12-14 04:56:04,860 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 04:56:04,865 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;@45804989, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 04:56:04,865 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-12-14 04:56:04,869 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 04:56:04,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 04:56:04,873 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:56:04,873 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 04:56:04,874 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 04:56:04,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:56:04,878 INFO L85 PathProgramCache]: Analyzing trace with hash 31179180, now seen corresponding path program 1 times [2022-12-14 04:56:04,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:56:04,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074614438] [2022-12-14 04:56:04,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:56:04,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:56:04,978 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 04:56:04,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2104051908] [2022-12-14 04:56:04,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:56:04,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:56:04,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3608e31-c73c-4c03-826d-4c7009a80d04/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:56:04,980 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3608e31-c73c-4c03-826d-4c7009a80d04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:56:04,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3608e31-c73c-4c03-826d-4c7009a80d04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 04:56:05,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:56:05,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-14 04:56:05,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:56:05,192 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 04:56:05,219 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-12-14 04:56:05,220 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 04:56:05,227 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 04:56:05,236 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 04:56:05,326 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 04:56:05,329 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 04:56:05,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:05,354 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 04:56:05,361 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 04:56:05,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:56:05,362 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:56:05,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074614438] [2022-12-14 04:56:05,362 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 04:56:05,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104051908] [2022-12-14 04:56:05,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104051908] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:56:05,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:56:05,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:56:05,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627150386] [2022-12-14 04:56:05,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:56:05,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 04:56:05,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:56:05,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 04:56:05,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 04:56:05,390 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 04:56:06,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:56:06,536 INFO L93 Difference]: Finished difference Result 416 states and 678 transitions. [2022-12-14 04:56:06,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 04:56:06,538 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 04:56:06,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:56:06,546 INFO L225 Difference]: With dead ends: 416 [2022-12-14 04:56:06,546 INFO L226 Difference]: Without dead ends: 240 [2022-12-14 04:56:06,548 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 04:56:06,550 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, 1.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:56:06,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 462 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-14 04:56:06,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-12-14 04:56:06,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 177. [2022-12-14 04:56:06,592 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 04:56:06,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 209 transitions. [2022-12-14 04:56:06,594 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 209 transitions. Word has length 4 [2022-12-14 04:56:06,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:56:06,594 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 209 transitions. [2022-12-14 04:56:06,595 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 04:56:06,595 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 209 transitions. [2022-12-14 04:56:06,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 04:56:06,596 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:56:06,596 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 04:56:06,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3608e31-c73c-4c03-826d-4c7009a80d04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 04:56:06,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3608e31-c73c-4c03-826d-4c7009a80d04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-14 04:56:06,799 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 04:56:06,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:56:06,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1356850095, now seen corresponding path program 1 times [2022-12-14 04:56:06,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:56:06,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121024527] [2022-12-14 04:56:06,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:56:06,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:56:06,866 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 04:56:06,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [859710441] [2022-12-14 04:56:06,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:56:06,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:56:06,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3608e31-c73c-4c03-826d-4c7009a80d04/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:56:06,867 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3608e31-c73c-4c03-826d-4c7009a80d04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:56:06,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3608e31-c73c-4c03-826d-4c7009a80d04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 04:56:07,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:56:07,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 04:56:07,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:56:07,066 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 04:56:07,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:56:07,067 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:56:07,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121024527] [2022-12-14 04:56:07,067 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 04:56:07,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859710441] [2022-12-14 04:56:07,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859710441] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:56:07,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:56:07,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:56:07,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42345406] [2022-12-14 04:56:07,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:56:07,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 04:56:07,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:56:07,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 04:56:07,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 04:56:07,069 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 04:56:08,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:56:08,217 INFO L93 Difference]: Finished difference Result 337 states and 402 transitions. [2022-12-14 04:56:08,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 04:56:08,222 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 04:56:08,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:56:08,224 INFO L225 Difference]: With dead ends: 337 [2022-12-14 04:56:08,224 INFO L226 Difference]: Without dead ends: 335 [2022-12-14 04:56:08,224 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 04:56:08,225 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 04:56:08,225 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 04:56:08,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-12-14 04:56:08,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 323. [2022-12-14 04:56:08,239 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 04:56:08,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 398 transitions. [2022-12-14 04:56:08,241 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 398 transitions. Word has length 18 [2022-12-14 04:56:08,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:56:08,241 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 398 transitions. [2022-12-14 04:56:08,241 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 04:56:08,241 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 398 transitions. [2022-12-14 04:56:08,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 04:56:08,242 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:56:08,242 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 04:56:08,248 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3608e31-c73c-4c03-826d-4c7009a80d04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 04:56:08,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3608e31-c73c-4c03-826d-4c7009a80d04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-12-14 04:56:08,444 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 04:56:08,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:56:08,446 INFO L85 PathProgramCache]: Analyzing trace with hash 887320049, now seen corresponding path program 1 times [2022-12-14 04:56:08,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:56:08,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10401432] [2022-12-14 04:56:08,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:56:08,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:56:08,511 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 04:56:08,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1844384221] [2022-12-14 04:56:08,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:56:08,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:56:08,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3608e31-c73c-4c03-826d-4c7009a80d04/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:56:08,513 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3608e31-c73c-4c03-826d-4c7009a80d04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:56:08,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3608e31-c73c-4c03-826d-4c7009a80d04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 04:56:08,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:56:08,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 04:56:08,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:56:08,696 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 04:56:08,696 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:56:08,696 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:56:08,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10401432] [2022-12-14 04:56:08,697 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 04:56:08,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844384221] [2022-12-14 04:56:08,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844384221] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:56:08,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:56:08,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:56:08,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180121716] [2022-12-14 04:56:08,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:56:08,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 04:56:08,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:56:08,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 04:56:08,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 04:56:08,699 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 04:56:10,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:56:10,549 INFO L93 Difference]: Finished difference Result 533 states and 652 transitions. [2022-12-14 04:56:10,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 04:56:10,549 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 04:56:10,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:56:10,552 INFO L225 Difference]: With dead ends: 533 [2022-12-14 04:56:10,552 INFO L226 Difference]: Without dead ends: 531 [2022-12-14 04:56:10,553 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 04:56:10,553 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 04:56:10,553 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 04:56:10,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2022-12-14 04:56:10,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 523. [2022-12-14 04:56:10,571 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 04:56:10,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 650 transitions. [2022-12-14 04:56:10,573 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 650 transitions. Word has length 19 [2022-12-14 04:56:10,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:56:10,573 INFO L495 AbstractCegarLoop]: Abstraction has 523 states and 650 transitions. [2022-12-14 04:56:10,573 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 04:56:10,574 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 650 transitions. [2022-12-14 04:56:10,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 04:56:10,574 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:56:10,574 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 04:56:10,579 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3608e31-c73c-4c03-826d-4c7009a80d04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 04:56:10,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3608e31-c73c-4c03-826d-4c7009a80d04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:56:10,776 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 04:56:10,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:56:10,777 INFO L85 PathProgramCache]: Analyzing trace with hash 310210136, now seen corresponding path program 1 times [2022-12-14 04:56:10,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:56:10,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971846390] [2022-12-14 04:56:10,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:56:10,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:56:10,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:56:11,053 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 04:56:11,054 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:56:11,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971846390] [2022-12-14 04:56:11,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971846390] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:56:11,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:56:11,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:56:11,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408446320] [2022-12-14 04:56:11,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:56:11,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 04:56:11,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:56:11,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 04:56:11,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 04:56:11,055 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 04:56:12,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:56:12,174 INFO L93 Difference]: Finished difference Result 869 states and 1090 transitions. [2022-12-14 04:56:12,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 04:56:12,177 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 04:56:12,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:56:12,179 INFO L225 Difference]: With dead ends: 869 [2022-12-14 04:56:12,179 INFO L226 Difference]: Without dead ends: 701 [2022-12-14 04:56:12,180 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 04:56:12,180 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 04:56:12,181 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 04:56:12,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2022-12-14 04:56:12,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 523. [2022-12-14 04:56:12,201 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 04:56:12,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 649 transitions. [2022-12-14 04:56:12,203 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 649 transitions. Word has length 24 [2022-12-14 04:56:12,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:56:12,203 INFO L495 AbstractCegarLoop]: Abstraction has 523 states and 649 transitions. [2022-12-14 04:56:12,203 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 04:56:12,203 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 649 transitions. [2022-12-14 04:56:12,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-14 04:56:12,203 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:56:12,203 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 04:56:12,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 04:56:12,204 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 04:56:12,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:56:12,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1082015607, now seen corresponding path program 1 times [2022-12-14 04:56:12,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:56:12,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393447833] [2022-12-14 04:56:12,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:56:12,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:56:12,221 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 04:56:12,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1319866716] [2022-12-14 04:56:12,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:56:12,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:56:12,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3608e31-c73c-4c03-826d-4c7009a80d04/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:56:12,223 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3608e31-c73c-4c03-826d-4c7009a80d04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:56:12,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3608e31-c73c-4c03-826d-4c7009a80d04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 04:56:12,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:56:12,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 04:56:12,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:56:12,442 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 04:56:12,442 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:56:12,442 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:56:12,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393447833] [2022-12-14 04:56:12,442 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 04:56:12,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319866716] [2022-12-14 04:56:12,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319866716] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:56:12,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:56:12,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 04:56:12,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752647063] [2022-12-14 04:56:12,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:56:12,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:56:12,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:56:12,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:56:12,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:56:12,443 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 04:56:13,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:56:13,139 INFO L93 Difference]: Finished difference Result 523 states and 649 transitions. [2022-12-14 04:56:13,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:56:13,142 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 04:56:13,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:56:13,143 INFO L225 Difference]: With dead ends: 523 [2022-12-14 04:56:13,143 INFO L226 Difference]: Without dead ends: 522 [2022-12-14 04:56:13,144 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 04:56:13,144 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 04:56:13,144 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 04:56:13,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2022-12-14 04:56:13,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 522. [2022-12-14 04:56:13,158 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 04:56:13,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 647 transitions. [2022-12-14 04:56:13,159 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 647 transitions. Word has length 27 [2022-12-14 04:56:13,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:56:13,160 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 647 transitions. [2022-12-14 04:56:13,160 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 04:56:13,160 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 647 transitions. [2022-12-14 04:56:13,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-14 04:56:13,160 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:56:13,160 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 04:56:13,165 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3608e31-c73c-4c03-826d-4c7009a80d04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 04:56:13,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3608e31-c73c-4c03-826d-4c7009a80d04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:56:13,361 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 04:56:13,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:56:13,361 INFO L85 PathProgramCache]: Analyzing trace with hash -817254490, now seen corresponding path program 1 times [2022-12-14 04:56:13,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:56:13,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712349342] [2022-12-14 04:56:13,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:56:13,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:56:13,378 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 04:56:13,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1776475799] [2022-12-14 04:56:13,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:56:13,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:56:13,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3608e31-c73c-4c03-826d-4c7009a80d04/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:56:13,379 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3608e31-c73c-4c03-826d-4c7009a80d04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:56:13,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3608e31-c73c-4c03-826d-4c7009a80d04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 04:56:13,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:56:13,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 04:56:13,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:56:13,618 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 04:56:13,618 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:56:13,618 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:56:13,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712349342] [2022-12-14 04:56:13,618 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 04:56:13,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776475799] [2022-12-14 04:56:13,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776475799] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:56:13,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:56:13,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 04:56:13,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566199370] [2022-12-14 04:56:13,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:56:13,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:56:13,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:56:13,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:56:13,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:56:13,620 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 04:56:14,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:56:14,268 INFO L93 Difference]: Finished difference Result 547 states and 665 transitions. [2022-12-14 04:56:14,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:56:14,271 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 04:56:14,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:56:14,273 INFO L225 Difference]: With dead ends: 547 [2022-12-14 04:56:14,273 INFO L226 Difference]: Without dead ends: 546 [2022-12-14 04:56:14,273 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 04:56:14,274 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 04:56:14,274 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 04:56:14,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2022-12-14 04:56:14,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 537. [2022-12-14 04:56:14,287 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 04:56:14,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 664 transitions. [2022-12-14 04:56:14,289 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 664 transitions. Word has length 28 [2022-12-14 04:56:14,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:56:14,289 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 664 transitions. [2022-12-14 04:56:14,290 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 04:56:14,290 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 664 transitions. [2022-12-14 04:56:14,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-14 04:56:14,290 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:56:14,290 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 04:56:14,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3608e31-c73c-4c03-826d-4c7009a80d04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 04:56:14,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3608e31-c73c-4c03-826d-4c7009a80d04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:56:14,492 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 04:56:14,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:56:14,493 INFO L85 PathProgramCache]: Analyzing trace with hash 407611559, now seen corresponding path program 1 times [2022-12-14 04:56:14,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:56:14,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720724147] [2022-12-14 04:56:14,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:56:14,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:56:14,604 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 04:56:14,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [427826810] [2022-12-14 04:56:14,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:56:14,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:56:14,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3608e31-c73c-4c03-826d-4c7009a80d04/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:56:14,605 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3608e31-c73c-4c03-826d-4c7009a80d04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:56:14,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3608e31-c73c-4c03-826d-4c7009a80d04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 04:56:15,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:56:15,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 1600 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 04:56:15,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:56:15,141 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 04:56:15,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:56:15,141 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:56:15,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720724147] [2022-12-14 04:56:15,141 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 04:56:15,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427826810] [2022-12-14 04:56:15,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427826810] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:56:15,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:56:15,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:56:15,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369404687] [2022-12-14 04:56:15,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:56:15,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:56:15,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:56:15,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:56:15,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:56:15,143 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 04:56:17,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 04:56:17,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:56:17,620 INFO L93 Difference]: Finished difference Result 999 states and 1231 transitions. [2022-12-14 04:56:17,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:56:17,623 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 04:56:17,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:56:17,625 INFO L225 Difference]: With dead ends: 999 [2022-12-14 04:56:17,625 INFO L226 Difference]: Without dead ends: 467 [2022-12-14 04:56:17,626 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 04:56:17,627 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 68 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s 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, 2.4s IncrementalHoareTripleChecker+Time [2022-12-14 04:56:17,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 344 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 96 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-12-14 04:56:17,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2022-12-14 04:56:17,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 415. [2022-12-14 04:56:17,646 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 04:56:17,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 503 transitions. [2022-12-14 04:56:17,649 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 503 transitions. Word has length 28 [2022-12-14 04:56:17,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:56:17,649 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 503 transitions. [2022-12-14 04:56:17,649 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 04:56:17,649 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 503 transitions. [2022-12-14 04:56:17,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-12-14 04:56:17,650 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:56:17,650 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 04:56:17,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3608e31-c73c-4c03-826d-4c7009a80d04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 04:56:17,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3608e31-c73c-4c03-826d-4c7009a80d04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:56:17,851 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 04:56:17,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:56:17,851 INFO L85 PathProgramCache]: Analyzing trace with hash -357382328, now seen corresponding path program 1 times [2022-12-14 04:56:17,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:56:17,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151230874] [2022-12-14 04:56:17,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:56:17,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:56:17,887 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 04:56:17,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1685661165] [2022-12-14 04:56:17,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:56:17,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:56:17,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3608e31-c73c-4c03-826d-4c7009a80d04/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:56:17,888 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3608e31-c73c-4c03-826d-4c7009a80d04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:56:17,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3608e31-c73c-4c03-826d-4c7009a80d04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 04:56:18,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:56:18,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 04:56:18,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:56:18,187 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 04:56:18,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:56:18,296 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 04:56:18,296 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:56:18,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151230874] [2022-12-14 04:56:18,296 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 04:56:18,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685661165] [2022-12-14 04:56:18,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685661165] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:56:18,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1693104826] [2022-12-14 04:56:18,314 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2022-12-14 04:56:18,314 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 04:56:18,316 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 04:56:18,320 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 04:56:18,320 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 04:56:18,356 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 04:56:18,360 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 04:56:18,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:18,379 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-12-14 04:56:18,379 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 04:56:18,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:18,389 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:56:18,404 INFO L321 Elim1Store]: treesize reduction 31, result has 35.4 percent of original size [2022-12-14 04:56:18,404 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 04:56:18,414 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 04:56:18,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:18,433 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:56:18,435 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 04:56:18,441 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 04:56:18,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:18,468 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 04:56:18,468 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 04:56:18,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:18,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:18,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:18,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:18,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:18,557 INFO L321 Elim1Store]: treesize reduction 34, result has 47.7 percent of original size [2022-12-14 04:56:18,557 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 04:56:18,579 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 04:56:18,603 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:56:18,604 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 04:56:18,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:18,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:18,670 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-12-14 04:56:18,670 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 04:56:18,683 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 04:56:18,696 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 04:56:18,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:18,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:18,712 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 04:56:18,803 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 04:56:18,811 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 04:56:18,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:18,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:18,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:18,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:18,828 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 04:56:18,852 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 04:56:18,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:18,874 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 04:56:19,548 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 04:56:19,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:19,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:19,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:19,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:19,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 9897273 treesize of output 8253295 [2022-12-14 04:56:19,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:19,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:19,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:19,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:19,668 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 04:56:19,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:19,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:19,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:19,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:19,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:19,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:19,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:19,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:19,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:19,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:19,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:19,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:19,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:19,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:19,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:19,753 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 04:56:19,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-12-14 04:56:19,954 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 04:56:19,969 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 04:56:19,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:19,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:19,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:19,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:19,998 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 04:56:20,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:20,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:20,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:20,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:20,046 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 04:56:20,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:20,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:20,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:20,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:20,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:20,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:20,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:20,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:20,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:20,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:20,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:20,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:20,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:20,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:20,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:20,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:20,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:20,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:20,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:20,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:20,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:20,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:20,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:20,220 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:56:20,222 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 04:56:20,475 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 04:56:20,477 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 04:56:20,480 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 04:56:20,486 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 04:56:20,491 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 04:56:20,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:20,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:20,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:20,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:20,573 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 04:56:20,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:20,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:20,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:20,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:20,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:20,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:20,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:20,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:20,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:20,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:20,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:20,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:20,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:20,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:20,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:56:20,656 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 04:56:20,754 INFO L173 IndexEqualityManager]: detected equality via solver