./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW --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 8374eced2cbda6aab489eb004cb8e41f23aad88b98cd5c6913f13583171f2c3f --- 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-4e7fbc6 [2022-11-23 13:48:48,639 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 13:48:48,641 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 13:48:48,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 13:48:48,662 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 13:48:48,663 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 13:48:48,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 13:48:48,666 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 13:48:48,668 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 13:48:48,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 13:48:48,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 13:48:48,672 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 13:48:48,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 13:48:48,673 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 13:48:48,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 13:48:48,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 13:48:48,677 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 13:48:48,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 13:48:48,680 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 13:48:48,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 13:48:48,689 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 13:48:48,690 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 13:48:48,692 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 13:48:48,693 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 13:48:48,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 13:48:48,700 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 13:48:48,700 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 13:48:48,702 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 13:48:48,703 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 13:48:48,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 13:48:48,707 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 13:48:48,708 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 13:48:48,711 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 13:48:48,713 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 13:48:48,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 13:48:48,714 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 13:48:48,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 13:48:48,715 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 13:48:48,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 13:48:48,718 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 13:48:48,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 13:48:48,720 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-23 13:48:48,764 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 13:48:48,767 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 13:48:48,767 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 13:48:48,768 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 13:48:48,769 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 13:48:48,769 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 13:48:48,769 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 13:48:48,769 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 13:48:48,770 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 13:48:48,770 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 13:48:48,771 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 13:48:48,771 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 13:48:48,772 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 13:48:48,772 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 13:48:48,772 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 13:48:48,772 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 13:48:48,772 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 13:48:48,773 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 13:48:48,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 13:48:48,774 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 13:48:48,774 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 13:48:48,774 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 13:48:48,774 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 13:48:48,775 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 13:48:48,775 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 13:48:48,775 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 13:48:48,775 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 13:48:48,776 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 13:48:48,776 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 13:48:48,776 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 13:48:48,776 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 13:48:48,777 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 13:48:48,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 13:48:48,777 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 13:48:48,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:48:48,778 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 13:48:48,778 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 13:48:48,778 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 13:48:48,778 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 13:48:48,779 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 13:48:48,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 13:48:48,779 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 13:48:48,779 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 13:48:48,779 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_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8374eced2cbda6aab489eb004cb8e41f23aad88b98cd5c6913f13583171f2c3f [2022-11-23 13:48:49,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 13:48:49,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 13:48:49,099 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 13:48:49,100 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 13:48:49,100 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 13:48:49,102 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-1.i [2022-11-23 13:48:52,108 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 13:48:52,438 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 13:48:52,439 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-1.i [2022-11-23 13:48:52,465 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW/data/5c720c487/dddf03bb31e64570b999b0bb2423ceb6/FLAG65a12e605 [2022-11-23 13:48:52,482 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW/data/5c720c487/dddf03bb31e64570b999b0bb2423ceb6 [2022-11-23 13:48:52,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 13:48:52,489 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 13:48:52,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 13:48:52,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 13:48:52,496 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 13:48:52,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:48:52" (1/1) ... [2022-11-23 13:48:52,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28bbc306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:52, skipping insertion in model container [2022-11-23 13:48:52,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:48:52" (1/1) ... [2022-11-23 13:48:52,506 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 13:48:52,575 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 13:48:53,172 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_e04a70a9-74fd-474d-9367-e3436282bced/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-1.i[44118,44131] [2022-11-23 13:48:53,184 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_e04a70a9-74fd-474d-9367-e3436282bced/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-1.i[44660,44673] [2022-11-23 13:48:53,301 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_e04a70a9-74fd-474d-9367-e3436282bced/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-1.i[56247,56260] [2022-11-23 13:48:53,302 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_e04a70a9-74fd-474d-9367-e3436282bced/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-1.i[56368,56381] [2022-11-23 13:48:53,309 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:48:53,333 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 13:48:53,373 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_e04a70a9-74fd-474d-9367-e3436282bced/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-1.i[44118,44131] [2022-11-23 13:48:53,376 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_e04a70a9-74fd-474d-9367-e3436282bced/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-1.i[44660,44673] [2022-11-23 13:48:53,439 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_e04a70a9-74fd-474d-9367-e3436282bced/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-1.i[56247,56260] [2022-11-23 13:48:53,440 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_e04a70a9-74fd-474d-9367-e3436282bced/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-1.i[56368,56381] [2022-11-23 13:48:53,445 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:48:53,507 INFO L208 MainTranslator]: Completed translation [2022-11-23 13:48:53,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:53 WrapperNode [2022-11-23 13:48:53,508 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 13:48:53,509 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 13:48:53,509 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 13:48:53,510 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 13:48:53,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:53" (1/1) ... [2022-11-23 13:48:53,547 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:53" (1/1) ... [2022-11-23 13:48:53,648 INFO L138 Inliner]: procedures = 282, calls = 294, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1046 [2022-11-23 13:48:53,648 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 13:48:53,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 13:48:53,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 13:48:53,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 13:48:53,673 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:53" (1/1) ... [2022-11-23 13:48:53,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:53" (1/1) ... [2022-11-23 13:48:53,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:53" (1/1) ... [2022-11-23 13:48:53,691 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:53" (1/1) ... [2022-11-23 13:48:53,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:53" (1/1) ... [2022-11-23 13:48:53,766 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:53" (1/1) ... [2022-11-23 13:48:53,782 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:53" (1/1) ... [2022-11-23 13:48:53,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:53" (1/1) ... [2022-11-23 13:48:53,802 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 13:48:53,811 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 13:48:53,811 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 13:48:53,811 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 13:48:53,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:53" (1/1) ... [2022-11-23 13:48:53,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:48:53,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:48:53,848 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 13:48:53,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 13:48:53,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 13:48:53,896 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-23 13:48:53,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 13:48:53,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 13:48:53,896 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2022-11-23 13:48:53,896 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2022-11-23 13:48:53,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 13:48:53,897 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-23 13:48:53,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-23 13:48:53,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 13:48:53,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 13:48:53,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 13:48:53,898 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2022-11-23 13:48:53,899 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2022-11-23 13:48:53,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 13:48:53,900 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2022-11-23 13:48:53,900 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2022-11-23 13:48:53,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 13:48:53,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 13:48:53,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 13:48:54,159 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 13:48:54,161 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 13:48:55,704 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 13:48:56,127 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 13:48:56,127 INFO L300 CfgBuilder]: Removed 63 assume(true) statements. [2022-11-23 13:48:56,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:48:56 BoogieIcfgContainer [2022-11-23 13:48:56,131 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 13:48:56,135 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 13:48:56,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 13:48:56,139 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 13:48:56,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:48:52" (1/3) ... [2022-11-23 13:48:56,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43cfb5a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:48:56, skipping insertion in model container [2022-11-23 13:48:56,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:53" (2/3) ... [2022-11-23 13:48:56,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43cfb5a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:48:56, skipping insertion in model container [2022-11-23 13:48:56,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:48:56" (3/3) ... [2022-11-23 13:48:56,145 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test6-1.i [2022-11-23 13:48:56,165 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 13:48:56,166 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-23 13:48:56,231 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 13:48:56,238 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;@7c0a1327, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 13:48:56,239 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-11-23 13:48:56,247 INFO L276 IsEmpty]: Start isEmpty. Operand has 158 states, 126 states have (on average 1.746031746031746) internal successors, (220), 140 states have internal predecessors, (220), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-23 13:48:56,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-23 13:48:56,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:48:56,254 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-23 13:48:56,255 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-23 13:48:56,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:48:56,260 INFO L85 PathProgramCache]: Analyzing trace with hash 27183590, now seen corresponding path program 1 times [2022-11-23 13:48:56,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:48:56,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479071930] [2022-11-23 13:48:56,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:48:56,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:48:56,399 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 13:48:56,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1789917488] [2022-11-23 13:48:56,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:48:56,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:48:56,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:48:56,404 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:48:56,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 13:48:56,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:48:56,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-23 13:48:56,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:48:56,778 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-23 13:48:56,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-23 13:48:56,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-23 13:48:56,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-23 13:48:56,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2022-11-23 13:48:56,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-23 13:48:56,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-23 13:48:57,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:48:57,044 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 22 treesize of output 10 [2022-11-23 13:48:57,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:48:57,061 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:48:57,062 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:48:57,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479071930] [2022-11-23 13:48:57,063 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 13:48:57,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789917488] [2022-11-23 13:48:57,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789917488] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:48:57,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:48:57,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 13:48:57,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225301007] [2022-11-23 13:48:57,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:48:57,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 13:48:57,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:48:57,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 13:48:57,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 13:48:57,113 INFO L87 Difference]: Start difference. First operand has 158 states, 126 states have (on average 1.746031746031746) internal successors, (220), 140 states have internal predecessors, (220), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:48:59,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:48:59,035 INFO L93 Difference]: Finished difference Result 376 states and 608 transitions. [2022-11-23 13:48:59,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 13:48:59,040 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-23 13:48:59,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:48:59,050 INFO L225 Difference]: With dead ends: 376 [2022-11-23 13:48:59,051 INFO L226 Difference]: Without dead ends: 206 [2022-11-23 13:48:59,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:48:59,058 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 64 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-23 13:48:59,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 416 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-23 13:48:59,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-11-23 13:48:59,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 153. [2022-11-23 13:48:59,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 125 states have (on average 1.256) internal successors, (157), 139 states have internal predecessors, (157), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-23 13:48:59,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 177 transitions. [2022-11-23 13:48:59,117 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 177 transitions. Word has length 4 [2022-11-23 13:48:59,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:48:59,117 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 177 transitions. [2022-11-23 13:48:59,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:48:59,118 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 177 transitions. [2022-11-23 13:48:59,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-23 13:48:59,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:48:59,119 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:48:59,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 13:48:59,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:48:59,331 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-23 13:48:59,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:48:59,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1012993337, now seen corresponding path program 1 times [2022-11-23 13:48:59,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:48:59,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668388892] [2022-11-23 13:48:59,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:48:59,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:48:59,411 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 13:48:59,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [402453424] [2022-11-23 13:48:59,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:48:59,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:48:59,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:48:59,419 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:48:59,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 13:48:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:48:59,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 13:48:59,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:48:59,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:48:59,770 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:48:59,771 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:48:59,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668388892] [2022-11-23 13:48:59,771 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 13:48:59,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402453424] [2022-11-23 13:48:59,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402453424] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:48:59,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:48:59,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 13:48:59,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892773135] [2022-11-23 13:48:59,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:48:59,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 13:48:59,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:48:59,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 13:48:59,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 13:48:59,775 INFO L87 Difference]: Start difference. First operand 153 states and 177 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:49:00,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:49:00,959 INFO L93 Difference]: Finished difference Result 290 states and 341 transitions. [2022-11-23 13:49:00,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 13:49:00,963 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-23 13:49:00,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:49:00,966 INFO L225 Difference]: With dead ends: 290 [2022-11-23 13:49:00,967 INFO L226 Difference]: Without dead ends: 288 [2022-11-23 13:49:00,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:49:00,969 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 148 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:49:00,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 454 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-23 13:49:00,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-11-23 13:49:01,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 276. [2022-11-23 13:49:01,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 238 states have (on average 1.2521008403361344) internal successors, (298), 253 states have internal predecessors, (298), 18 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (21), 16 states have call predecessors, (21), 18 states have call successors, (21) [2022-11-23 13:49:01,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 337 transitions. [2022-11-23 13:49:01,010 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 337 transitions. Word has length 18 [2022-11-23 13:49:01,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:49:01,010 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 337 transitions. [2022-11-23 13:49:01,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:49:01,011 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 337 transitions. [2022-11-23 13:49:01,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-23 13:49:01,012 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:49:01,012 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:49:01,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 13:49:01,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:49:01,219 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-23 13:49:01,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:49:01,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1338022341, now seen corresponding path program 1 times [2022-11-23 13:49:01,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:49:01,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905298956] [2022-11-23 13:49:01,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:49:01,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:49:01,281 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 13:49:01,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1449142138] [2022-11-23 13:49:01,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:49:01,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:49:01,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:49:01,283 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:49:01,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 13:49:01,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:49:01,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 13:49:01,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:49:01,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:49:01,620 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:49:01,620 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:49:01,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905298956] [2022-11-23 13:49:01,620 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 13:49:01,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449142138] [2022-11-23 13:49:01,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449142138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:49:01,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:49:01,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 13:49:01,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573814605] [2022-11-23 13:49:01,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:49:01,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 13:49:01,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:49:01,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 13:49:01,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 13:49:01,630 INFO L87 Difference]: Start difference. First operand 276 states and 337 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:49:03,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:49:03,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:49:03,852 INFO L93 Difference]: Finished difference Result 437 states and 529 transitions. [2022-11-23 13:49:03,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 13:49:03,853 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-23 13:49:03,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:49:03,855 INFO L225 Difference]: With dead ends: 437 [2022-11-23 13:49:03,856 INFO L226 Difference]: Without dead ends: 435 [2022-11-23 13:49:03,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:49:03,857 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 103 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-23 13:49:03,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 447 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-23 13:49:03,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2022-11-23 13:49:03,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 427. [2022-11-23 13:49:03,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 383 states have (on average 1.248041775456919) internal successors, (478), 399 states have internal predecessors, (478), 23 states have call successors, (23), 10 states have call predecessors, (23), 7 states have return successors, (26), 18 states have call predecessors, (26), 23 states have call successors, (26) [2022-11-23 13:49:03,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 527 transitions. [2022-11-23 13:49:03,892 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 527 transitions. Word has length 19 [2022-11-23 13:49:03,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:49:03,893 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 527 transitions. [2022-11-23 13:49:03,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:49:03,893 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 527 transitions. [2022-11-23 13:49:03,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-23 13:49:03,895 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:49:03,895 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:49:03,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 13:49:04,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:49:04,102 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-23 13:49:04,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:49:04,103 INFO L85 PathProgramCache]: Analyzing trace with hash -587835803, now seen corresponding path program 1 times [2022-11-23 13:49:04,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:49:04,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328367955] [2022-11-23 13:49:04,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:49:04,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:49:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:49:04,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:49:04,562 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:49:04,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328367955] [2022-11-23 13:49:04,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328367955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:49:04,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:49:04,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:49:04,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186188395] [2022-11-23 13:49:04,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:49:04,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 13:49:04,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:49:04,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 13:49:04,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 13:49:04,572 INFO L87 Difference]: Start difference. First operand 427 states and 527 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:49:06,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 13:49:06,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:49:06,696 INFO L93 Difference]: Finished difference Result 680 states and 839 transitions. [2022-11-23 13:49:06,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 13:49:06,699 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-23 13:49:06,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:49:06,702 INFO L225 Difference]: With dead ends: 680 [2022-11-23 13:49:06,702 INFO L226 Difference]: Without dead ends: 561 [2022-11-23 13:49:06,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:49:06,705 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 56 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:49:06,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 408 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-23 13:49:06,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-11-23 13:49:06,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 427. [2022-11-23 13:49:06,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 383 states have (on average 1.2454308093994777) internal successors, (477), 399 states have internal predecessors, (477), 23 states have call successors, (23), 10 states have call predecessors, (23), 7 states have return successors, (26), 18 states have call predecessors, (26), 23 states have call successors, (26) [2022-11-23 13:49:06,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 526 transitions. [2022-11-23 13:49:06,749 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 526 transitions. Word has length 24 [2022-11-23 13:49:06,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:49:06,749 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 526 transitions. [2022-11-23 13:49:06,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:49:06,750 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 526 transitions. [2022-11-23 13:49:06,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-23 13:49:06,751 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:49:06,751 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:49:06,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 13:49:06,752 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting alt_bzeroErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-23 13:49:06,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:49:06,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1768029670, now seen corresponding path program 1 times [2022-11-23 13:49:06,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:49:06,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550102711] [2022-11-23 13:49:06,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:49:06,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:49:06,785 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 13:49:06,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1151025883] [2022-11-23 13:49:06,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:49:06,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:49:06,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:49:06,787 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:49:06,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 13:49:07,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:49:07,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 13:49:07,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:49:07,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:49:07,153 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:49:07,153 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:49:07,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550102711] [2022-11-23 13:49:07,154 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 13:49:07,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151025883] [2022-11-23 13:49:07,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151025883] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:49:07,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:49:07,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 13:49:07,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078010723] [2022-11-23 13:49:07,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:49:07,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:49:07,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:49:07,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:49:07,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:49:07,160 INFO L87 Difference]: Start difference. First operand 427 states and 526 transitions. Second operand has 3 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 13:49:07,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:49:07,861 INFO L93 Difference]: Finished difference Result 427 states and 526 transitions. [2022-11-23 13:49:07,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:49:07,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-11-23 13:49:07,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:49:07,868 INFO L225 Difference]: With dead ends: 427 [2022-11-23 13:49:07,868 INFO L226 Difference]: Without dead ends: 426 [2022-11-23 13:49:07,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:49:07,872 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 144 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 13:49:07,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 148 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 13:49:07,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-11-23 13:49:07,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 426. [2022-11-23 13:49:07,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 383 states have (on average 1.2402088772845954) internal successors, (475), 398 states have internal predecessors, (475), 23 states have call successors, (23), 10 states have call predecessors, (23), 7 states have return successors, (26), 18 states have call predecessors, (26), 23 states have call successors, (26) [2022-11-23 13:49:07,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 524 transitions. [2022-11-23 13:49:07,905 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 524 transitions. Word has length 27 [2022-11-23 13:49:07,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:49:07,906 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 524 transitions. [2022-11-23 13:49:07,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 13:49:07,907 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 524 transitions. [2022-11-23 13:49:07,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-23 13:49:07,914 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:49:07,914 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:49:07,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 13:49:08,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:49:08,122 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting alt_bzeroErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-23 13:49:08,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:49:08,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1025655139, now seen corresponding path program 1 times [2022-11-23 13:49:08,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:49:08,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168904915] [2022-11-23 13:49:08,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:49:08,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:49:08,171 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 13:49:08,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [127416445] [2022-11-23 13:49:08,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:49:08,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:49:08,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:49:08,173 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:49:08,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 13:49:08,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:49:08,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 13:49:08,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:49:08,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:49:08,550 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:49:08,550 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:49:08,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168904915] [2022-11-23 13:49:08,551 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 13:49:08,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127416445] [2022-11-23 13:49:08,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127416445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:49:08,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:49:08,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 13:49:08,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913629447] [2022-11-23 13:49:08,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:49:08,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:49:08,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:49:08,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:49:08,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:49:08,555 INFO L87 Difference]: Start difference. First operand 426 states and 524 transitions. Second operand has 3 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 13:49:10,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:49:10,232 INFO L93 Difference]: Finished difference Result 451 states and 542 transitions. [2022-11-23 13:49:10,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:49:10,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-11-23 13:49:10,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:49:10,240 INFO L225 Difference]: With dead ends: 451 [2022-11-23 13:49:10,240 INFO L226 Difference]: Without dead ends: 450 [2022-11-23 13:49:10,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:49:10,241 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 110 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-23 13:49:10,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 306 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-23 13:49:10,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-11-23 13:49:10,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 441. [2022-11-23 13:49:10,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 393 states have (on average 1.2366412213740459) internal successors, (486), 409 states have internal predecessors, (486), 26 states have call successors, (26), 12 states have call predecessors, (26), 9 states have return successors, (29), 21 states have call predecessors, (29), 26 states have call successors, (29) [2022-11-23 13:49:10,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 541 transitions. [2022-11-23 13:49:10,271 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 541 transitions. Word has length 28 [2022-11-23 13:49:10,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:49:10,272 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 541 transitions. [2022-11-23 13:49:10,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 13:49:10,272 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 541 transitions. [2022-11-23 13:49:10,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-23 13:49:10,273 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:49:10,273 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:49:10,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 13:49:10,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-23 13:49:10,480 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-23 13:49:10,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:49:10,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1275924237, now seen corresponding path program 1 times [2022-11-23 13:49:10,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:49:10,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348164462] [2022-11-23 13:49:10,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:49:10,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:49:10,612 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 13:49:10,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [394218725] [2022-11-23 13:49:10,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:49:10,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:49:10,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:49:10,614 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:49:10,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 13:49:11,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:49:11,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 1600 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 13:49:11,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:49:11,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:49:11,532 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:49:11,532 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:49:11,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348164462] [2022-11-23 13:49:11,533 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 13:49:11,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394218725] [2022-11-23 13:49:11,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394218725] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:49:11,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:49:11,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 13:49:11,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594001033] [2022-11-23 13:49:11,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:49:11,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:49:11,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:49:11,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:49:11,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:49:11,536 INFO L87 Difference]: Start difference. First operand 441 states and 541 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:49:12,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:49:12,967 INFO L93 Difference]: Finished difference Result 813 states and 989 transitions. [2022-11-23 13:49:12,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:49:12,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-23 13:49:12,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:49:12,974 INFO L225 Difference]: With dead ends: 813 [2022-11-23 13:49:12,974 INFO L226 Difference]: Without dead ends: 377 [2022-11-23 13:49:12,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:49:12,976 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 49 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-23 13:49:12,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 282 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-23 13:49:12,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-11-23 13:49:13,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 368. [2022-11-23 13:49:13,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 326 states have (on average 1.2116564417177915) internal successors, (395), 341 states have internal predecessors, (395), 21 states have call successors, (21), 10 states have call predecessors, (21), 8 states have return successors, (24), 18 states have call predecessors, (24), 21 states have call successors, (24) [2022-11-23 13:49:13,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 440 transitions. [2022-11-23 13:49:13,004 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 440 transitions. Word has length 28 [2022-11-23 13:49:13,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:49:13,004 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 440 transitions. [2022-11-23 13:49:13,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:49:13,005 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 440 transitions. [2022-11-23 13:49:13,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-23 13:49:13,005 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:49:13,006 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] [2022-11-23 13:49:13,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 13:49:13,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:49:13,215 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)] === [2022-11-23 13:49:13,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:49:13,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1651858904, now seen corresponding path program 1 times [2022-11-23 13:49:13,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:49:13,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26556561] [2022-11-23 13:49:13,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:49:13,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:49:13,271 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 13:49:13,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1908059576] [2022-11-23 13:49:13,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:49:13,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:49:13,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:49:13,273 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:49:13,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04a70a9-74fd-474d-9367-e3436282bced/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 13:49:13,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:49:13,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 13:49:13,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:49:13,851 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:49:13,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:49:14,062 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:49:14,062 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:49:14,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26556561] [2022-11-23 13:49:14,062 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 13:49:14,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908059576] [2022-11-23 13:49:14,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908059576] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:49:14,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1190331440] [2022-11-23 13:49:14,085 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2022-11-23 13:49:14,085 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:49:14,088 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:49:14,093 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:49:14,093 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:49:14,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:14,189 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-23 13:49:14,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-11-23 13:49:14,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:14,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:14,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 30 [2022-11-23 13:49:14,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-23 13:49:14,232 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 15 treesize of output 1 [2022-11-23 13:49:14,240 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 15 treesize of output 1 [2022-11-23 13:49:14,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:14,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-11-23 13:49:14,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:14,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:14,353 INFO L321 Elim1Store]: treesize reduction 34, result has 47.7 percent of original size [2022-11-23 13:49:14,353 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 43 treesize of output 65 [2022-11-23 13:49:14,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-23 13:49:14,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:14,420 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 13:49:14,424 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 25 [2022-11-23 13:49:14,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:14,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:14,500 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-23 13:49:14,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 61 [2022-11-23 13:49:14,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 13:49:14,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:14,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:14,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 40 [2022-11-23 13:49:14,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 13:49:14,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:14,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:14,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:14,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:14,735 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 197 treesize of output 163 [2022-11-23 13:49:14,764 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-23 13:49:14,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:14,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 34 [2022-11-23 13:49:14,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-23 13:49:14,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-23 13:49:15,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-23 13:49:15,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:15,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:15,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:15,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:15,758 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 9897170 treesize of output 8253224 [2022-11-23 13:49:16,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,296 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 237 treesize of output 201 [2022-11-23 13:49:16,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 28 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 8253076 treesize of output 5376288 [2022-11-23 13:49:16,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-23 13:49:16,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,669 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 92192956 treesize of output 74109966 [2022-11-23 13:49:16,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,732 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 90960030 treesize of output 74109978 [2022-11-23 13:49:16,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:16,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:17,009 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 13:49:17,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 36 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 8664067 treesize of output 6198246 [2022-11-23 13:49:17,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-23 13:49:17,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-23 13:49:17,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2022-11-23 13:49:17,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-23 13:49:17,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2022-11-23 13:49:17,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-23 13:49:17,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-23 13:49:17,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2022-11-23 13:49:17,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:17,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:17,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 18 [2022-11-23 13:49:17,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:17,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:17,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2022-11-23 13:49:17,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2022-11-23 13:49:17,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:17,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:17,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:17,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:17,819 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 92192985 treesize of output 74109977 [2022-11-23 13:49:17,851 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 74109973 treesize of output 58903827 [2022-11-23 13:49:17,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:17,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:17,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:17,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:17,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:17,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:17,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:17,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:17,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:17,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:17,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:17,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:17,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:17,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:17,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:17,930 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 7225616 treesize of output 4759746 [2022-11-23 13:49:17,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:49:17,972 INFO L190 IndexEqualityManager]: detected not equals via solver