./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8260e89-afb3-4786-ba1e-339d7869f515/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8260e89-afb3-4786-ba1e-339d7869f515/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8260e89-afb3-4786-ba1e-339d7869f515/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8260e89-afb3-4786-ba1e-339d7869f515/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8260e89-afb3-4786-ba1e-339d7869f515/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8260e89-afb3-4786-ba1e-339d7869f515/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 52ed361cdf08860b8c7c7d564ef95393de2d3a38663ac135cf0da9ded1f39b3f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 07:48:15,135 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 07:48:15,137 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 07:48:15,155 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 07:48:15,156 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 07:48:15,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 07:48:15,158 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 07:48:15,159 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 07:48:15,161 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 07:48:15,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 07:48:15,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 07:48:15,164 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 07:48:15,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 07:48:15,165 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 07:48:15,166 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 07:48:15,167 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 07:48:15,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 07:48:15,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 07:48:15,170 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 07:48:15,172 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 07:48:15,173 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 07:48:15,175 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 07:48:15,176 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 07:48:15,177 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 07:48:15,180 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 07:48:15,180 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 07:48:15,180 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 07:48:15,181 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 07:48:15,182 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 07:48:15,183 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 07:48:15,183 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 07:48:15,184 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 07:48:15,184 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 07:48:15,185 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 07:48:15,186 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 07:48:15,187 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 07:48:15,187 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 07:48:15,187 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 07:48:15,188 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 07:48:15,188 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 07:48:15,189 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 07:48:15,189 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8260e89-afb3-4786-ba1e-339d7869f515/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 07:48:15,210 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 07:48:15,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 07:48:15,210 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 07:48:15,211 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 07:48:15,211 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 07:48:15,212 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 07:48:15,212 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 07:48:15,212 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 07:48:15,212 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 07:48:15,212 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 07:48:15,213 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 07:48:15,213 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 07:48:15,213 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 07:48:15,213 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 07:48:15,213 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 07:48:15,213 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 07:48:15,214 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 07:48:15,214 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 07:48:15,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 07:48:15,215 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 07:48:15,215 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 07:48:15,215 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 07:48:15,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 07:48:15,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 07:48:15,216 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 07:48:15,216 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 07:48:15,216 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 07:48:15,216 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 07:48:15,216 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 07:48:15,217 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 07:48:15,217 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 07:48:15,217 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 07:48:15,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:48:15,217 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 07:48:15,218 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 07:48:15,218 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 07:48:15,218 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 07:48:15,218 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 07:48:15,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 07:48:15,219 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 07:48:15,219 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 07:48:15,219 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_a8260e89-afb3-4786-ba1e-339d7869f515/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8260e89-afb3-4786-ba1e-339d7869f515/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52ed361cdf08860b8c7c7d564ef95393de2d3a38663ac135cf0da9ded1f39b3f [2022-12-14 07:48:15,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 07:48:15,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 07:48:15,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 07:48:15,414 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 07:48:15,415 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 07:48:15,416 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8260e89-afb3-4786-ba1e-339d7869f515/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i [2022-12-14 07:48:18,054 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 07:48:18,248 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 07:48:18,249 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8260e89-afb3-4786-ba1e-339d7869f515/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i [2022-12-14 07:48:18,257 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8260e89-afb3-4786-ba1e-339d7869f515/bin/utaipan-gh47qXpMRh/data/6f81af65e/78aad5d1f833486f9c3f24e2b8c2b3d4/FLAG01329bc0a [2022-12-14 07:48:18,268 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8260e89-afb3-4786-ba1e-339d7869f515/bin/utaipan-gh47qXpMRh/data/6f81af65e/78aad5d1f833486f9c3f24e2b8c2b3d4 [2022-12-14 07:48:18,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 07:48:18,271 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 07:48:18,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 07:48:18,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 07:48:18,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 07:48:18,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:48:18" (1/1) ... [2022-12-14 07:48:18,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fa96f2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:48:18, skipping insertion in model container [2022-12-14 07:48:18,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:48:18" (1/1) ... [2022-12-14 07:48:18,284 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 07:48:18,322 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 07:48:18,531 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_a8260e89-afb3-4786-ba1e-339d7869f515/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i[26271,26284] [2022-12-14 07:48:18,535 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_a8260e89-afb3-4786-ba1e-339d7869f515/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i[26396,26409] [2022-12-14 07:48:18,537 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_a8260e89-afb3-4786-ba1e-339d7869f515/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i[26511,26524] [2022-12-14 07:48:18,546 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:48:18,554 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 07:48:18,586 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_a8260e89-afb3-4786-ba1e-339d7869f515/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i[26271,26284] [2022-12-14 07:48:18,587 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_a8260e89-afb3-4786-ba1e-339d7869f515/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i[26396,26409] [2022-12-14 07:48:18,588 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_a8260e89-afb3-4786-ba1e-339d7869f515/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i[26511,26524] [2022-12-14 07:48:18,593 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:48:18,613 INFO L208 MainTranslator]: Completed translation [2022-12-14 07:48:18,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:48:18 WrapperNode [2022-12-14 07:48:18,613 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 07:48:18,614 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 07:48:18,614 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 07:48:18,614 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 07:48:18,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:48:18" (1/1) ... [2022-12-14 07:48:18,631 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:48:18" (1/1) ... [2022-12-14 07:48:18,649 INFO L138 Inliner]: procedures = 142, calls = 63, calls flagged for inlining = 14, calls inlined = 13, statements flattened = 162 [2022-12-14 07:48:18,649 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 07:48:18,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 07:48:18,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 07:48:18,650 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 07:48:18,658 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:48:18" (1/1) ... [2022-12-14 07:48:18,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:48:18" (1/1) ... [2022-12-14 07:48:18,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:48:18" (1/1) ... [2022-12-14 07:48:18,663 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:48:18" (1/1) ... [2022-12-14 07:48:18,673 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:48:18" (1/1) ... [2022-12-14 07:48:18,678 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:48:18" (1/1) ... [2022-12-14 07:48:18,679 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:48:18" (1/1) ... [2022-12-14 07:48:18,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:48:18" (1/1) ... [2022-12-14 07:48:18,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 07:48:18,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 07:48:18,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 07:48:18,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 07:48:18,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:48:18" (1/1) ... [2022-12-14 07:48:18,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:48:18,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8260e89-afb3-4786-ba1e-339d7869f515/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:48:18,713 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8260e89-afb3-4786-ba1e-339d7869f515/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 07:48:18,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8260e89-afb3-4786-ba1e-339d7869f515/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 07:48:18,750 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2022-12-14 07:48:18,750 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2022-12-14 07:48:18,750 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2022-12-14 07:48:18,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2022-12-14 07:48:18,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 07:48:18,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 07:48:18,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 07:48:18,751 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2022-12-14 07:48:18,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2022-12-14 07:48:18,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 07:48:18,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 07:48:18,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 07:48:18,751 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2022-12-14 07:48:18,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2022-12-14 07:48:18,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 07:48:18,751 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2022-12-14 07:48:18,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2022-12-14 07:48:18,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 07:48:18,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 07:48:18,862 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 07:48:18,864 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 07:48:19,121 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 07:48:19,178 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 07:48:19,178 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-12-14 07:48:19,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:48:19 BoogieIcfgContainer [2022-12-14 07:48:19,181 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 07:48:19,183 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 07:48:19,183 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 07:48:19,186 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 07:48:19,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 07:48:18" (1/3) ... [2022-12-14 07:48:19,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22dcd8ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:48:19, skipping insertion in model container [2022-12-14 07:48:19,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:48:18" (2/3) ... [2022-12-14 07:48:19,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22dcd8ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:48:19, skipping insertion in model container [2022-12-14 07:48:19,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:48:19" (3/3) ... [2022-12-14 07:48:19,189 INFO L112 eAbstractionObserver]: Analyzing ICFG test_mutex_unbounded-2.i [2022-12-14 07:48:19,205 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 07:48:19,205 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-12-14 07:48:19,239 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 07:48:19,244 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;@16348ea2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 07:48:19,244 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-14 07:48:19,247 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 35 states have (on average 1.4) internal successors, (49), 39 states have internal predecessors, (49), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 07:48:19,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 07:48:19,252 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:48:19,253 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 07:48:19,253 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:48:19,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:48:19,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1775127545, now seen corresponding path program 1 times [2022-12-14 07:48:19,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:48:19,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044003079] [2022-12-14 07:48:19,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:48:19,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:48:19,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:48:19,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:48:19,563 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:48:19,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044003079] [2022-12-14 07:48:19,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044003079] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:48:19,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:48:19,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:48:19,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663289059] [2022-12-14 07:48:19,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:48:19,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 07:48:19,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:48:19,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 07:48:19,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:48:19,593 INFO L87 Difference]: Start difference. First operand has 54 states, 35 states have (on average 1.4) internal successors, (49), 39 states have internal predecessors, (49), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:48:19,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:48:19,772 INFO L93 Difference]: Finished difference Result 145 states and 189 transitions. [2022-12-14 07:48:19,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 07:48:19,774 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-12-14 07:48:19,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:48:19,780 INFO L225 Difference]: With dead ends: 145 [2022-12-14 07:48:19,780 INFO L226 Difference]: Without dead ends: 92 [2022-12-14 07:48:19,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:48:19,785 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 48 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:48:19,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 149 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:48:19,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-12-14 07:48:19,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 72. [2022-12-14 07:48:19,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 50 states have (on average 1.36) internal successors, (68), 54 states have internal predecessors, (68), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2022-12-14 07:48:19,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 94 transitions. [2022-12-14 07:48:19,830 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 94 transitions. Word has length 6 [2022-12-14 07:48:19,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:48:19,831 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 94 transitions. [2022-12-14 07:48:19,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:48:19,831 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 94 transitions. [2022-12-14 07:48:19,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 07:48:19,833 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:48:19,833 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:48:19,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 07:48:19,833 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:48:19,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:48:19,834 INFO L85 PathProgramCache]: Analyzing trace with hash -2012936512, now seen corresponding path program 1 times [2022-12-14 07:48:19,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:48:19,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774074823] [2022-12-14 07:48:19,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:48:19,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:48:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:48:19,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:48:19,895 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:48:19,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774074823] [2022-12-14 07:48:19,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774074823] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:48:19,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:48:19,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 07:48:19,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752917307] [2022-12-14 07:48:19,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:48:19,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 07:48:19,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:48:19,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 07:48:19,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:48:19,898 INFO L87 Difference]: Start difference. First operand 72 states and 94 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 07:48:19,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:48:19,967 INFO L93 Difference]: Finished difference Result 82 states and 109 transitions. [2022-12-14 07:48:19,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 07:48:19,968 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-12-14 07:48:19,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:48:19,969 INFO L225 Difference]: With dead ends: 82 [2022-12-14 07:48:19,969 INFO L226 Difference]: Without dead ends: 80 [2022-12-14 07:48:19,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:48:19,971 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 0 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:48:19,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 144 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:48:19,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-12-14 07:48:19,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-12-14 07:48:19,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 56 states have (on average 1.3214285714285714) internal successors, (74), 60 states have internal predecessors, (74), 13 states have call successors, (13), 6 states have call predecessors, (13), 8 states have return successors, (19), 14 states have call predecessors, (19), 13 states have call successors, (19) [2022-12-14 07:48:19,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 106 transitions. [2022-12-14 07:48:19,984 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 106 transitions. Word has length 11 [2022-12-14 07:48:19,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:48:19,984 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 106 transitions. [2022-12-14 07:48:19,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 07:48:19,984 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 106 transitions. [2022-12-14 07:48:19,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 07:48:19,985 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:48:19,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:48:19,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 07:48:19,986 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:48:19,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:48:19,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1855141470, now seen corresponding path program 1 times [2022-12-14 07:48:19,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:48:19,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176150554] [2022-12-14 07:48:19,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:48:19,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:48:20,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:48:20,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:48:20,083 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:48:20,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176150554] [2022-12-14 07:48:20,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176150554] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:48:20,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:48:20,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 07:48:20,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115982707] [2022-12-14 07:48:20,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:48:20,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 07:48:20,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:48:20,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 07:48:20,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:48:20,085 INFO L87 Difference]: Start difference. First operand 80 states and 106 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 07:48:20,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:48:20,208 INFO L93 Difference]: Finished difference Result 139 states and 178 transitions. [2022-12-14 07:48:20,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 07:48:20,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-12-14 07:48:20,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:48:20,209 INFO L225 Difference]: With dead ends: 139 [2022-12-14 07:48:20,209 INFO L226 Difference]: Without dead ends: 65 [2022-12-14 07:48:20,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:48:20,211 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 12 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:48:20,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 138 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:48:20,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-12-14 07:48:20,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2022-12-14 07:48:20,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 43 states have internal predecessors, (49), 11 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2022-12-14 07:48:20,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 74 transitions. [2022-12-14 07:48:20,217 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 74 transitions. Word has length 12 [2022-12-14 07:48:20,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:48:20,217 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 74 transitions. [2022-12-14 07:48:20,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 07:48:20,217 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 74 transitions. [2022-12-14 07:48:20,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 07:48:20,218 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:48:20,218 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:48:20,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 07:48:20,218 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:48:20,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:48:20,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1947875402, now seen corresponding path program 1 times [2022-12-14 07:48:20,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:48:20,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76928008] [2022-12-14 07:48:20,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:48:20,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:48:20,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:48:20,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:48:20,547 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:48:20,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76928008] [2022-12-14 07:48:20,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76928008] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:48:20,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450808164] [2022-12-14 07:48:20,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:48:20,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:48:20,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8260e89-afb3-4786-ba1e-339d7869f515/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:48:20,549 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8260e89-afb3-4786-ba1e-339d7869f515/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:48:20,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8260e89-afb3-4786-ba1e-339d7869f515/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 07:48:20,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:48:20,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 50 conjunts are in the unsatisfiable core [2022-12-14 07:48:20,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:48:20,785 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 07:48:20,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-14 07:48:21,015 INFO L321 Elim1Store]: treesize reduction 117, result has 35.4 percent of original size [2022-12-14 07:48:21,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 92 treesize of output 229 [2022-12-14 07:48:21,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-14 07:48:21,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-14 07:48:21,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-14 07:48:21,430 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-12-14 07:48:21,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 21 [2022-12-14 07:48:21,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 07:48:21,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:48:21,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 64 treesize of output 30 [2022-12-14 07:48:21,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 07:48:21,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 07:48:21,864 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 16 treesize of output 8 [2022-12-14 07:48:21,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:48:21,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:48:22,106 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 07:48:22,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 746 treesize of output 735 [2022-12-14 07:48:22,116 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 902 treesize of output 870 [2022-12-14 07:48:22,126 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 958 treesize of output 942 [2022-12-14 07:48:22,138 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 942 treesize of output 938 [2022-12-14 07:48:22,148 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 938 treesize of output 930 [2022-12-14 07:48:22,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:48:22,326 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:48:22,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:48:22,329 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 30 treesize of output 28 [2022-12-14 07:48:22,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:48:22,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:48:22,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:48:22,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450808164] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:48:22,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [967466670] [2022-12-14 07:48:22,451 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-12-14 07:48:22,451 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:48:22,453 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:48:22,457 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:48:22,457 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:48:22,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-14 07:48:22,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 07:48:22,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:48:22,695 INFO L321 Elim1Store]: treesize reduction 128, result has 32.3 percent of original size [2022-12-14 07:48:22,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 68 [2022-12-14 07:48:22,741 INFO L321 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-12-14 07:48:22,742 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 1 case distinctions, treesize of input 35 treesize of output 19 [2022-12-14 07:48:22,766 INFO L321 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2022-12-14 07:48:22,766 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 1 case distinctions, treesize of input 39 treesize of output 31 [2022-12-14 07:48:22,787 INFO L321 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-12-14 07:48:22,788 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 1 case distinctions, treesize of input 33 treesize of output 31 [2022-12-14 07:48:22,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:48:22,854 INFO L321 Elim1Store]: treesize reduction 147, result has 22.2 percent of original size [2022-12-14 07:48:22,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 49 [2022-12-14 07:48:22,872 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 7 treesize of output 3 [2022-12-14 07:48:22,875 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 7 treesize of output 3 [2022-12-14 07:48:22,884 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 7 treesize of output 3 [2022-12-14 07:48:22,888 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 7 treesize of output 3 [2022-12-14 07:48:22,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:48:22,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:48:22,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-12-14 07:48:22,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:48:22,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:48:22,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-12-14 07:48:22,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:48:22,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:48:22,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-12-14 07:48:22,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:48:22,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:48:22,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-12-14 07:48:22,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 07:48:22,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 07:48:23,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 07:48:23,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 07:48:23,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:48:23,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:48:23,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-12-14 07:48:23,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:48:23,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:48:23,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-12-14 07:48:23,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:48:23,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:48:23,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-12-14 07:48:23,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:48:23,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:48:23,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-12-14 07:48:23,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 07:48:23,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 07:48:23,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 07:48:23,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 07:48:23,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 07:48:23,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 07:48:23,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 07:48:23,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 07:48:24,059 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_successful_malloc with input of size 27 for LOIs [2022-12-14 07:48:24,064 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_list_add with input of size 34 for LOIs [2022-12-14 07:48:24,097 INFO L197 IcfgInterpreter]: Interpreting procedure __ldv_list_add with input of size 42 for LOIs [2022-12-14 07:48:24,127 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:48:26,594 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1013#(and (<= 0 (+ |ULTIMATE.start_foo_~N~0#1| 2147483648)) (= |ULTIMATE.start_ldv_set_empty_#in~s#1.offset| |~#mutexes~0.offset|) (= |ULTIMATE.start_foo_~__mptr~5#1.base| (select (select |#memory_$Pointer$.base| |~#drvlist~0.base|) |~#drvlist~0.offset|)) (= |ULTIMATE.start_foo_~__mptr~7#1.offset| (select (select |#memory_$Pointer$.offset| |~#drvlist~0.base|) |~#drvlist~0.offset|)) (= |ULTIMATE.start_ldv_list_empty_~head#1.base| |ULTIMATE.start_ldv_list_empty_#in~head#1.base|) (= |ULTIMATE.start_ldv_list_empty_#res#1| |ULTIMATE.start_ldv_set_empty_#res#1|) (<= |ULTIMATE.start_foo_~N~0#1| |ULTIMATE.start_foo_~i~0#1|) (= (select (select |#memory_$Pointer$.base| |~#drvlist~0.base|) |~#drvlist~0.offset|) |ULTIMATE.start_foo_~__mptr~7#1.base|) (= (ite (and (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_ldv_list_empty_~head#1.base|) |ULTIMATE.start_ldv_list_empty_~head#1.offset|) |ULTIMATE.start_ldv_list_empty_~head#1.offset|) (= |ULTIMATE.start_ldv_list_empty_~head#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_ldv_list_empty_~head#1.base|) |ULTIMATE.start_ldv_list_empty_~head#1.offset|))) 1 0) |ULTIMATE.start_ldv_list_empty_#res#1|) (<= |#NULL.offset| 0) (<= 4 |~#drvlist~0.base|) (= |ULTIMATE.start_ldv_set_empty_#res#1| 0) (= |~#mutexes~0.base| |ULTIMATE.start_ldv_set_empty_#in~s#1.base|) (= |ULTIMATE.start_ldv_set_empty_#in~s#1.offset| |ULTIMATE.start_ldv_set_empty_~s#1.offset|) (= |ULTIMATE.start_foo_~__mptr~5#1.offset| |~#drvlist~0.offset|) (<= 3 |~#mutexes~0.base|) (= |ULTIMATE.start_ldv_set_empty_~s#1.base| |ULTIMATE.start_ldv_list_empty_#in~head#1.base|) (= |ULTIMATE.start_foo_~__mptr~7#1.offset| (+ 8 |ULTIMATE.start_foo_~me~1#1.offset|)) (= |ULTIMATE.start_ldv_list_empty_#in~head#1.offset| |ULTIMATE.start_ldv_list_empty_~head#1.offset|) (<= |~#drvlist~0.base| 4) (= |ULTIMATE.start_ldv_set_empty_~s#1.offset| |ULTIMATE.start_ldv_list_empty_#in~head#1.offset|) (= |~#drvlist~0.base| |ULTIMATE.start_foo_~me~1#1.base|) (= |ULTIMATE.start_foo_~__mptr~5#1.base| |~#drvlist~0.base|) (= |ULTIMATE.start_ldv_set_empty_~s#1.base| |ULTIMATE.start_ldv_set_empty_#in~s#1.base|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_foo_~N~0#1| 2147483647) (<= |~#mutexes~0.base| 3) (or (and (= |~#drvlist~0.offset| 0) (= |~#mutexes~0.offset| 0) (= |ULTIMATE.start_foo_~i~0#1| 0) (= |#NULL.base| 0)) (and (= |~#drvlist~0.offset| 0) (= |ULTIMATE.start_foo_~me~0#1.offset| 0) (= |~#mutexes~0.offset| 0) (= |#NULL.base| 0))) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_foo_~__mptr~5#1.offset| (select (select |#memory_$Pointer$.offset| |~#drvlist~0.base|) |~#drvlist~0.offset|)) (<= 0 |ULTIMATE.start_foo_~i~0#1|))' at error location [2022-12-14 07:48:26,594 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:48:26,594 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:48:26,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 32 [2022-12-14 07:48:26,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598993298] [2022-12-14 07:48:26,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:48:26,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-14 07:48:26,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:48:26,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-14 07:48:26,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=2056, Unknown=2, NotChecked=0, Total=2256 [2022-12-14 07:48:26,597 INFO L87 Difference]: Start difference. First operand 60 states and 74 transitions. Second operand has 32 states, 20 states have (on average 1.65) internal successors, (33), 25 states have internal predecessors, (33), 9 states have call successors, (9), 4 states have call predecessors, (9), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-12-14 07:48:27,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:48:27,776 INFO L93 Difference]: Finished difference Result 143 states and 176 transitions. [2022-12-14 07:48:27,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-14 07:48:27,776 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 20 states have (on average 1.65) internal successors, (33), 25 states have internal predecessors, (33), 9 states have call successors, (9), 4 states have call predecessors, (9), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 19 [2022-12-14 07:48:27,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:48:27,778 INFO L225 Difference]: With dead ends: 143 [2022-12-14 07:48:27,778 INFO L226 Difference]: Without dead ends: 119 [2022-12-14 07:48:27,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 771 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=427, Invalid=3603, Unknown=2, NotChecked=0, Total=4032 [2022-12-14 07:48:27,780 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 493 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 1397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 07:48:27,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 449 Invalid, 1397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 07:48:27,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-12-14 07:48:27,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2022-12-14 07:48:27,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 65 states have (on average 1.3076923076923077) internal successors, (85), 71 states have internal predecessors, (85), 16 states have call successors, (16), 10 states have call predecessors, (16), 12 states have return successors, (21), 15 states have call predecessors, (21), 16 states have call successors, (21) [2022-12-14 07:48:27,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 122 transitions. [2022-12-14 07:48:27,798 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 122 transitions. Word has length 19 [2022-12-14 07:48:27,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:48:27,798 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 122 transitions. [2022-12-14 07:48:27,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 20 states have (on average 1.65) internal successors, (33), 25 states have internal predecessors, (33), 9 states have call successors, (9), 4 states have call predecessors, (9), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-12-14 07:48:27,798 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 122 transitions. [2022-12-14 07:48:27,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-14 07:48:27,799 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:48:27,799 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] [2022-12-14 07:48:27,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8260e89-afb3-4786-ba1e-339d7869f515/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 07:48:28,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8260e89-afb3-4786-ba1e-339d7869f515/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:48:28,001 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:48:28,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:48:28,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1928361267, now seen corresponding path program 1 times [2022-12-14 07:48:28,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:48:28,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998499894] [2022-12-14 07:48:28,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:48:28,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:48:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:48:29,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:48:29,542 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:48:29,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998499894] [2022-12-14 07:48:29,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998499894] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:48:29,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635934873] [2022-12-14 07:48:29,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:48:29,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:48:29,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8260e89-afb3-4786-ba1e-339d7869f515/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:48:29,544 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8260e89-afb3-4786-ba1e-339d7869f515/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:48:29,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8260e89-afb3-4786-ba1e-339d7869f515/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 07:48:29,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:48:29,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 107 conjunts are in the unsatisfiable core [2022-12-14 07:48:29,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:48:29,751 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 07:48:29,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-14 07:48:29,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 07:48:29,830 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 7 treesize of output 3 [2022-12-14 07:48:30,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2022-12-14 07:48:30,067 INFO L321 Elim1Store]: treesize reduction 50, result has 29.6 percent of original size [2022-12-14 07:48:30,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 55 treesize of output 57 [2022-12-14 07:48:30,085 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-12-14 07:48:30,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 61 treesize of output 64 [2022-12-14 07:48:30,093 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 07:48:30,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 42 [2022-12-14 07:48:30,105 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 07:48:30,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 32 [2022-12-14 07:48:30,110 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 7 treesize of output 3 [2022-12-14 07:48:30,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:48:30,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:48:35,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635934873] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:48:35,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [18933254] [2022-12-14 07:48:35,686 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2022-12-14 07:48:35,686 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:48:35,687 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:48:35,687 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:48:35,687 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:48:35,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 07:48:35,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-14 07:48:35,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:48:35,888 INFO L321 Elim1Store]: treesize reduction 147, result has 22.2 percent of original size [2022-12-14 07:48:35,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 49 [2022-12-14 07:48:35,932 INFO L321 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-12-14 07:48:35,932 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 1 case distinctions, treesize of input 35 treesize of output 19 [2022-12-14 07:48:35,957 INFO L321 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2022-12-14 07:48:35,958 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 1 case distinctions, treesize of input 39 treesize of output 31 [2022-12-14 07:48:35,982 INFO L321 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-12-14 07:48:35,982 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 1 case distinctions, treesize of input 33 treesize of output 31 [2022-12-14 07:48:35,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:48:36,064 INFO L321 Elim1Store]: treesize reduction 128, result has 32.3 percent of original size [2022-12-14 07:48:36,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 68 [2022-12-14 07:48:36,079 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 7 treesize of output 3 [2022-12-14 07:48:36,082 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 7 treesize of output 3 [2022-12-14 07:48:36,088 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 7 treesize of output 3 [2022-12-14 07:48:36,091 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 7 treesize of output 3 [2022-12-14 07:48:36,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:48:36,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:48:36,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-12-14 07:48:36,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:48:36,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:48:36,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-12-14 07:48:36,137 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 07:48:36,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:48:36,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:48:36,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-12-14 07:48:36,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:48:36,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:48:36,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-12-14 07:48:36,231 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 07:48:36,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 07:48:36,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 07:48:36,320 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 07:48:36,321 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 07:48:36,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 07:48:36,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 07:48:36,398 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 07:48:36,399 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 07:48:37,185 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_successful_malloc with input of size 27 for LOIs [2022-12-14 07:48:37,188 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_is_in_set with input of size 90 for LOIs [2022-12-14 07:48:37,233 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_list_add with input of size 34 for LOIs [2022-12-14 07:48:37,261 INFO L197 IcfgInterpreter]: Interpreting procedure __ldv_list_add with input of size 42 for LOIs [2022-12-14 07:48:37,295 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:48:41,159 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1533#(and (= |~#drvlist~0.offset| 0) (= |~#mutexes~0.base| 3) (= |ULTIMATE.start_foo_~me~0#1.offset| 0) (= |~#mutexes~0.offset| 0) (= |#NULL.offset| 0) (<= |ULTIMATE.start_foo_~N~0#1| 2147483647) (<= 1 |ULTIMATE.start_foo_~i~0#1|) (<= 0 |#StackHeapBarrier|) (= 4 |~#drvlist~0.base|) (<= 0 |ULTIMATE.start_foo_~N~0#1|) (= |#NULL.base| 0))' at error location [2022-12-14 07:48:41,159 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:48:41,159 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 07:48:41,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 27 [2022-12-14 07:48:41,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364227691] [2022-12-14 07:48:41,159 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 07:48:41,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-14 07:48:41,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:48:41,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-14 07:48:41,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=2325, Unknown=7, NotChecked=0, Total=2550 [2022-12-14 07:48:41,161 INFO L87 Difference]: Start difference. First operand 96 states and 122 transitions. Second operand has 27 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 20 states have internal predecessors, (31), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 07:48:43,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:48:43,842 INFO L93 Difference]: Finished difference Result 242 states and 315 transitions. [2022-12-14 07:48:43,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-14 07:48:43,842 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 20 states have internal predecessors, (31), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) Word has length 25 [2022-12-14 07:48:43,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:48:43,843 INFO L225 Difference]: With dead ends: 242 [2022-12-14 07:48:43,843 INFO L226 Difference]: Without dead ends: 158 [2022-12-14 07:48:43,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1525 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=500, Invalid=4744, Unknown=12, NotChecked=0, Total=5256 [2022-12-14 07:48:43,845 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 147 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 88 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-14 07:48:43,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 333 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 826 Invalid, 4 Unknown, 0 Unchecked, 1.3s Time] [2022-12-14 07:48:43,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-12-14 07:48:43,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 120. [2022-12-14 07:48:43,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 81 states have (on average 1.2962962962962963) internal successors, (105), 88 states have internal predecessors, (105), 20 states have call successors, (20), 13 states have call predecessors, (20), 16 states have return successors, (26), 19 states have call predecessors, (26), 20 states have call successors, (26) [2022-12-14 07:48:43,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 151 transitions. [2022-12-14 07:48:43,859 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 151 transitions. Word has length 25 [2022-12-14 07:48:43,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:48:43,859 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 151 transitions. [2022-12-14 07:48:43,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 20 states have internal predecessors, (31), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 07:48:43,859 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 151 transitions. [2022-12-14 07:48:43,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-12-14 07:48:43,860 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:48:43,860 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:48:43,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8260e89-afb3-4786-ba1e-339d7869f515/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 07:48:44,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8260e89-afb3-4786-ba1e-339d7869f515/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:48:44,062 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:48:44,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:48:44,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1922686274, now seen corresponding path program 2 times [2022-12-14 07:48:44,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:48:44,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453448108] [2022-12-14 07:48:44,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:48:44,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:48:44,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:48:47,839 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 07:48:47,839 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:48:47,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453448108] [2022-12-14 07:48:47,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453448108] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:48:47,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945353957] [2022-12-14 07:48:47,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 07:48:47,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:48:47,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8260e89-afb3-4786-ba1e-339d7869f515/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:48:47,841 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8260e89-afb3-4786-ba1e-339d7869f515/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:48:47,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8260e89-afb3-4786-ba1e-339d7869f515/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 07:48:47,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 07:48:47,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:48:47,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 175 conjunts are in the unsatisfiable core [2022-12-14 07:48:47,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:48:48,196 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 07:48:48,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-14 07:48:48,324 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 7 treesize of output 3 [2022-12-14 07:48:48,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 07:48:48,722 INFO L321 Elim1Store]: treesize reduction 50, result has 29.6 percent of original size [2022-12-14 07:48:48,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 95 treesize of output 75 [2022-12-14 07:48:48,758 INFO L321 Elim1Store]: treesize reduction 67, result has 26.4 percent of original size [2022-12-14 07:48:48,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 128 treesize of output 165 [2022-12-14 07:48:48,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2022-12-14 07:48:48,795 INFO L321 Elim1Store]: treesize reduction 22, result has 47.6 percent of original size [2022-12-14 07:48:48,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 154 treesize of output 114 [2022-12-14 07:48:48,816 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-12-14 07:48:48,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 40 [2022-12-14 07:48:48,824 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 12 treesize of output 11 [2022-12-14 07:48:48,831 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 7 treesize of output 3 [2022-12-14 07:48:48,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 73 treesize of output 29 [2022-12-14 07:48:48,869 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 9 treesize of output 7 [2022-12-14 07:48:49,210 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 07:48:49,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-14 07:48:49,343 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 7 treesize of output 3 [2022-12-14 07:48:49,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-12-14 07:48:49,736 INFO L321 Elim1Store]: treesize reduction 53, result has 39.1 percent of original size [2022-12-14 07:48:49,737 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 2 case distinctions, treesize of input 24 treesize of output 49 [2022-12-14 07:48:49,759 INFO L321 Elim1Store]: treesize reduction 46, result has 35.2 percent of original size [2022-12-14 07:48:49,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 67 treesize of output 65 [2022-12-14 07:48:49,797 INFO L321 Elim1Store]: treesize reduction 47, result has 42.7 percent of original size [2022-12-14 07:48:49,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 89 treesize of output 108 [2022-12-14 07:48:49,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 07:48:50,063 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:48:50,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:48:50,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945353957] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:48:50,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [795577344] [2022-12-14 07:48:50,698 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2022-12-14 07:48:50,698 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:48:50,699 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:48:50,699 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:48:50,699 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:48:50,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-14 07:48:50,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 07:48:50,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:48:50,960 INFO L321 Elim1Store]: treesize reduction 131, result has 34.8 percent of original size [2022-12-14 07:48:50,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 70 [2022-12-14 07:48:50,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:48:51,025 INFO L321 Elim1Store]: treesize reduction 147, result has 22.2 percent of original size [2022-12-14 07:48:51,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 49 [2022-12-14 07:48:51,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:48:51,105 INFO L321 Elim1Store]: treesize reduction 128, result has 32.3 percent of original size [2022-12-14 07:48:51,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 68 [2022-12-14 07:48:51,116 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 7 treesize of output 3 [2022-12-14 07:48:51,119 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 7 treesize of output 3 [2022-12-14 07:48:51,126 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 7 treesize of output 3 [2022-12-14 07:48:51,129 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 7 treesize of output 3 [2022-12-14 07:48:51,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:48:51,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:48:51,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-12-14 07:48:51,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:48:51,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:48:51,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-12-14 07:48:51,182 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 07:48:51,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:48:51,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:48:51,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-12-14 07:48:51,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:48:51,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:48:51,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-12-14 07:48:51,297 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 07:48:51,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 07:48:51,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 07:48:51,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 07:48:51,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 07:48:51,918 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_successful_malloc with input of size 27 for LOIs [2022-12-14 07:48:51,923 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_is_in_set with input of size 39 for LOIs [2022-12-14 07:48:51,937 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_list_add with input of size 34 for LOIs [2022-12-14 07:48:51,964 INFO L197 IcfgInterpreter]: Interpreting procedure __ldv_list_add with input of size 42 for LOIs [2022-12-14 07:48:51,994 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:48:55,291 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2293#(and (= |~#drvlist~0.offset| 0) (<= 0 (+ |ULTIMATE.start_foo_~N~0#1| 2147483648)) (= |~#mutexes~0.base| 3) (= |~#mutexes~0.offset| 0) (= |#NULL.offset| 0) (<= |ULTIMATE.start_foo_~N~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= 4 |~#drvlist~0.base|) (<= 0 |ULTIMATE.start_foo_~i~0#1|) (= |#NULL.base| 0))' at error location [2022-12-14 07:48:55,291 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:48:55,291 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 07:48:55,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22] total 42 [2022-12-14 07:48:55,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98017285] [2022-12-14 07:48:55,291 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 07:48:55,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-12-14 07:48:55,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:48:55,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-12-14 07:48:55,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=3944, Unknown=18, NotChecked=0, Total=4290 [2022-12-14 07:48:55,293 INFO L87 Difference]: Start difference. First operand 120 states and 151 transitions. Second operand has 42 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 30 states have internal predecessors, (43), 12 states have call successors, (13), 9 states have call predecessors, (13), 14 states have return successors, (14), 13 states have call predecessors, (14), 12 states have call successors, (14) [2022-12-14 07:48:58,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:48:58,503 INFO L93 Difference]: Finished difference Result 233 states and 297 transitions. [2022-12-14 07:48:58,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-14 07:48:58,503 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 30 states have internal predecessors, (43), 12 states have call successors, (13), 9 states have call predecessors, (13), 14 states have return successors, (14), 13 states have call predecessors, (14), 12 states have call successors, (14) Word has length 38 [2022-12-14 07:48:58,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:48:58,504 INFO L225 Difference]: With dead ends: 233 [2022-12-14 07:48:58,504 INFO L226 Difference]: Without dead ends: 149 [2022-12-14 07:48:58,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2797 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=638, Invalid=6822, Unknown=22, NotChecked=0, Total=7482 [2022-12-14 07:48:58,506 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 204 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 120 mSolverCounterUnsat, 20 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 1326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 20 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-14 07:48:58,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 432 Invalid, 1326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1186 Invalid, 20 Unknown, 0 Unchecked, 1.8s Time] [2022-12-14 07:48:58,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-12-14 07:48:58,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 101. [2022-12-14 07:48:58,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 67 states have (on average 1.2985074626865671) internal successors, (87), 74 states have internal predecessors, (87), 17 states have call successors, (17), 12 states have call predecessors, (17), 14 states have return successors, (21), 15 states have call predecessors, (21), 17 states have call successors, (21) [2022-12-14 07:48:58,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 125 transitions. [2022-12-14 07:48:58,518 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 125 transitions. Word has length 38 [2022-12-14 07:48:58,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:48:58,518 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 125 transitions. [2022-12-14 07:48:58,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 30 states have internal predecessors, (43), 12 states have call successors, (13), 9 states have call predecessors, (13), 14 states have return successors, (14), 13 states have call predecessors, (14), 12 states have call successors, (14) [2022-12-14 07:48:58,518 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 125 transitions. [2022-12-14 07:48:58,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-12-14 07:48:58,519 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:48:58,519 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:48:58,526 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8260e89-afb3-4786-ba1e-339d7869f515/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 07:48:58,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8260e89-afb3-4786-ba1e-339d7869f515/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:48:58,720 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:48:58,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:48:58,721 INFO L85 PathProgramCache]: Analyzing trace with hash -642729523, now seen corresponding path program 1 times [2022-12-14 07:48:58,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:48:58,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208591964] [2022-12-14 07:48:58,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:48:58,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:48:58,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:48:58,784 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 07:48:58,784 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:48:58,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208591964] [2022-12-14 07:48:58,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208591964] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:48:58,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:48:58,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 07:48:58,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612844622] [2022-12-14 07:48:58,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:48:58,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 07:48:58,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:48:58,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 07:48:58,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:48:58,786 INFO L87 Difference]: Start difference. First operand 101 states and 125 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 07:48:58,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:48:58,871 INFO L93 Difference]: Finished difference Result 175 states and 218 transitions. [2022-12-14 07:48:58,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 07:48:58,872 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 40 [2022-12-14 07:48:58,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:48:58,873 INFO L225 Difference]: With dead ends: 175 [2022-12-14 07:48:58,873 INFO L226 Difference]: Without dead ends: 109 [2022-12-14 07:48:58,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:48:58,874 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 0 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:48:58,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 144 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:48:58,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-12-14 07:48:58,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 107. [2022-12-14 07:48:58,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 72 states have (on average 1.2777777777777777) internal successors, (92), 78 states have internal predecessors, (92), 17 states have call successors, (17), 12 states have call predecessors, (17), 15 states have return successors, (22), 17 states have call predecessors, (22), 17 states have call successors, (22) [2022-12-14 07:48:58,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 131 transitions. [2022-12-14 07:48:58,894 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 131 transitions. Word has length 40 [2022-12-14 07:48:58,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:48:58,894 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 131 transitions. [2022-12-14 07:48:58,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 07:48:58,895 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 131 transitions. [2022-12-14 07:48:58,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-12-14 07:48:58,895 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:48:58,896 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, 1, 1, 1, 1, 1, 1] [2022-12-14 07:48:58,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 07:48:58,896 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:48:58,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:48:58,896 INFO L85 PathProgramCache]: Analyzing trace with hash 2090290515, now seen corresponding path program 1 times [2022-12-14 07:48:58,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:48:58,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401092993] [2022-12-14 07:48:58,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:48:58,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:48:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:49:06,467 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 07:49:06,468 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:49:06,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401092993] [2022-12-14 07:49:06,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401092993] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:49:06,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265197729] [2022-12-14 07:49:06,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:49:06,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:49:06,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8260e89-afb3-4786-ba1e-339d7869f515/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:49:06,469 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8260e89-afb3-4786-ba1e-339d7869f515/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:49:06,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8260e89-afb3-4786-ba1e-339d7869f515/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 07:49:06,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:49:06,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 49 conjunts are in the unsatisfiable core [2022-12-14 07:49:06,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:49:07,044 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 07:49:07,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:49:07,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2022-12-14 07:49:07,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2022-12-14 07:49:07,476 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 07:49:07,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265197729] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:49:07,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [676235485] [2022-12-14 07:49:07,478 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2022-12-14 07:49:07,478 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:49:07,478 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:49:07,478 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:49:07,478 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:49:07,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-14 07:49:07,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 07:49:07,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:49:07,632 INFO L321 Elim1Store]: treesize reduction 147, result has 22.2 percent of original size [2022-12-14 07:49:07,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 49 [2022-12-14 07:49:07,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:49:07,716 INFO L321 Elim1Store]: treesize reduction 128, result has 32.3 percent of original size [2022-12-14 07:49:07,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 68 [2022-12-14 07:49:07,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:49:07,795 INFO L321 Elim1Store]: treesize reduction 131, result has 34.8 percent of original size [2022-12-14 07:49:07,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 70 [2022-12-14 07:49:07,813 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 7 treesize of output 3 [2022-12-14 07:49:07,816 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 7 treesize of output 3 [2022-12-14 07:49:07,822 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 7 treesize of output 3 [2022-12-14 07:49:07,824 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 7 treesize of output 3 [2022-12-14 07:49:07,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:49:07,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:49:07,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-12-14 07:49:07,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:49:07,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:49:07,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-12-14 07:49:07,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:49:07,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:49:07,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-12-14 07:49:07,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:49:07,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:49:07,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-12-14 07:49:07,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 07:49:07,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 07:49:07,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 07:49:07,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 07:49:08,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:49:08,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:49:08,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-12-14 07:49:08,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:49:08,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:49:08,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-12-14 07:49:08,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:49:08,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:49:08,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-12-14 07:49:08,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:49:08,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:49:08,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-12-14 07:49:08,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 07:49:08,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 07:49:08,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 07:49:08,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 07:49:08,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 07:49:08,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 07:49:08,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 07:49:08,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-12-14 07:49:08,919 INFO L321 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-12-14 07:49:08,919 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 1 case distinctions, treesize of input 35 treesize of output 19 [2022-12-14 07:49:08,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:49:08,978 INFO L321 Elim1Store]: treesize reduction 132, result has 25.8 percent of original size [2022-12-14 07:49:08,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 48 treesize of output 59 [2022-12-14 07:49:08,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:49:09,060 INFO L321 Elim1Store]: treesize reduction 122, result has 31.5 percent of original size [2022-12-14 07:49:09,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 48 treesize of output 69 [2022-12-14 07:49:10,127 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_successful_malloc with input of size 27 for LOIs [2022-12-14 07:49:10,131 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_list_del with input of size 27 for LOIs [2022-12-14 07:49:10,144 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_is_in_set with input of size 41 for LOIs [2022-12-14 07:49:10,182 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_list_add with input of size 34 for LOIs [2022-12-14 07:49:10,209 INFO L197 IcfgInterpreter]: Interpreting procedure __ldv_list_add with input of size 42 for LOIs [2022-12-14 07:49:10,242 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:49:15,230 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3484#(and (= (+ 8 |ULTIMATE.start_foo_~me~1#1.offset|) |~#drvlist~0.offset|) (= |~#drvlist~0.offset| 0) (<= 0 (+ |ULTIMATE.start_foo_~N~0#1| 2147483648)) (= |ULTIMATE.start_foo_~__mptr~7#1.base| |ULTIMATE.start_foo_~me~1#1.base|) (= |ULTIMATE.start_ldv_set_empty_#in~s#1.offset| |~#mutexes~0.offset|) (= |ULTIMATE.start_foo_~__mptr~7#1.offset| (select (select |#memory_$Pointer$.offset| |~#drvlist~0.base|) |~#drvlist~0.offset|)) (= |ULTIMATE.start_ldv_list_empty_~head#1.base| |ULTIMATE.start_ldv_list_empty_#in~head#1.base|) (= |ULTIMATE.start_ldv_list_empty_#res#1| |ULTIMATE.start_ldv_set_empty_#res#1|) (= (select (select |#memory_$Pointer$.base| |~#drvlist~0.base|) |~#drvlist~0.offset|) |ULTIMATE.start_foo_~__mptr~7#1.base|) (= |~#mutexes~0.base| 3) (= (ite (and (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_ldv_list_empty_~head#1.base|) |ULTIMATE.start_ldv_list_empty_~head#1.offset|) |ULTIMATE.start_ldv_list_empty_~head#1.offset|) (= |ULTIMATE.start_ldv_list_empty_~head#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_ldv_list_empty_~head#1.base|) |ULTIMATE.start_ldv_list_empty_~head#1.offset|))) 1 0) |ULTIMATE.start_ldv_list_empty_#res#1|) (= |ULTIMATE.start_ldv_set_empty_#res#1| 0) (= |~#mutexes~0.offset| 0) (= |~#mutexes~0.base| |ULTIMATE.start_ldv_set_empty_#in~s#1.base|) (= |ULTIMATE.start_ldv_set_empty_#in~s#1.offset| |ULTIMATE.start_ldv_set_empty_~s#1.offset|) (= |ULTIMATE.start_ldv_set_empty_~s#1.base| |ULTIMATE.start_ldv_list_empty_#in~head#1.base|) (= |ULTIMATE.start_foo_~__mptr~7#1.offset| (+ 8 |ULTIMATE.start_foo_~me~1#1.offset|)) (= |ULTIMATE.start_ldv_list_empty_#in~head#1.offset| |ULTIMATE.start_ldv_list_empty_~head#1.offset|) (= |#NULL.offset| 0) (= |ULTIMATE.start_ldv_set_empty_~s#1.offset| |ULTIMATE.start_ldv_list_empty_#in~head#1.offset|) (= |~#drvlist~0.base| |ULTIMATE.start_foo_~me~1#1.base|) (= |ULTIMATE.start_ldv_set_empty_~s#1.base| |ULTIMATE.start_ldv_set_empty_#in~s#1.base|) (<= |ULTIMATE.start_foo_~N~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= 4 |~#drvlist~0.base|) (<= 0 |ULTIMATE.start_foo_~i~0#1|) (= |#NULL.base| 0))' at error location [2022-12-14 07:49:15,230 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:49:15,230 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:49:15,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 9, 8] total 36 [2022-12-14 07:49:15,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663706722] [2022-12-14 07:49:15,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:49:15,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-12-14 07:49:15,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:49:15,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-12-14 07:49:15,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=3419, Unknown=0, NotChecked=0, Total=3660 [2022-12-14 07:49:15,234 INFO L87 Difference]: Start difference. First operand 107 states and 131 transitions. Second operand has 36 states, 29 states have (on average 2.689655172413793) internal successors, (78), 30 states have internal predecessors, (78), 10 states have call successors, (18), 7 states have call predecessors, (18), 12 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2022-12-14 07:49:20,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:49:20,613 INFO L93 Difference]: Finished difference Result 302 states and 379 transitions. [2022-12-14 07:49:20,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-12-14 07:49:20,614 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 29 states have (on average 2.689655172413793) internal successors, (78), 30 states have internal predecessors, (78), 10 states have call successors, (18), 7 states have call predecessors, (18), 12 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) Word has length 41 [2022-12-14 07:49:20,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:49:20,616 INFO L225 Difference]: With dead ends: 302 [2022-12-14 07:49:20,616 INFO L226 Difference]: Without dead ends: 202 [2022-12-14 07:49:20,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 90 SyntacticMatches, 5 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2810 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=892, Invalid=9820, Unknown=0, NotChecked=0, Total=10712 [2022-12-14 07:49:20,618 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 349 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 1528 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 1739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 1528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-12-14 07:49:20,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 497 Invalid, 1739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 1528 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-12-14 07:49:20,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-12-14 07:49:20,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 131. [2022-12-14 07:49:20,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 93 states have (on average 1.2580645161290323) internal successors, (117), 99 states have internal predecessors, (117), 18 states have call successors, (18), 14 states have call predecessors, (18), 17 states have return successors, (25), 18 states have call predecessors, (25), 18 states have call successors, (25) [2022-12-14 07:49:20,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 160 transitions. [2022-12-14 07:49:20,633 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 160 transitions. Word has length 41 [2022-12-14 07:49:20,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:49:20,633 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 160 transitions. [2022-12-14 07:49:20,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 29 states have (on average 2.689655172413793) internal successors, (78), 30 states have internal predecessors, (78), 10 states have call successors, (18), 7 states have call predecessors, (18), 12 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2022-12-14 07:49:20,633 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 160 transitions. [2022-12-14 07:49:20,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-14 07:49:20,634 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:49:20,634 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:49:20,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8260e89-afb3-4786-ba1e-339d7869f515/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 07:49:20,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8260e89-afb3-4786-ba1e-339d7869f515/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:49:20,835 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:49:20,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:49:20,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1572049383, now seen corresponding path program 1 times [2022-12-14 07:49:20,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:49:20,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694679982] [2022-12-14 07:49:20,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:49:20,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:49:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 07:49:21,016 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 07:49:21,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 07:49:21,136 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 07:49:21,136 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 07:49:21,137 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-14 07:49:21,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-12-14 07:49:21,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-12-14 07:49:21,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 07:49:21,141 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:49:21,144 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 07:49:21,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 07:49:21 BoogieIcfgContainer [2022-12-14 07:49:21,179 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 07:49:21,179 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 07:49:21,179 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 07:49:21,179 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 07:49:21,180 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:48:19" (3/4) ... [2022-12-14 07:49:21,181 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-14 07:49:21,249 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8260e89-afb3-4786-ba1e-339d7869f515/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 07:49:21,250 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 07:49:21,250 INFO L158 Benchmark]: Toolchain (without parser) took 62978.86ms. Allocated memory was 146.8MB in the beginning and 255.9MB in the end (delta: 109.1MB). Free memory was 99.3MB in the beginning and 203.8MB in the end (delta: -104.4MB). Peak memory consumption was 90.7MB. Max. memory is 16.1GB. [2022-12-14 07:49:21,250 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 146.8MB. Free memory is still 99.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 07:49:21,251 INFO L158 Benchmark]: CACSL2BoogieTranslator took 341.16ms. Allocated memory is still 146.8MB. Free memory was 99.0MB in the beginning and 78.7MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-12-14 07:49:21,251 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.61ms. Allocated memory is still 146.8MB. Free memory was 78.7MB in the beginning and 76.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 07:49:21,251 INFO L158 Benchmark]: Boogie Preprocessor took 34.44ms. Allocated memory is still 146.8MB. Free memory was 76.2MB in the beginning and 73.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 07:49:21,251 INFO L158 Benchmark]: RCFGBuilder took 495.82ms. Allocated memory is still 146.8MB. Free memory was 73.8MB in the beginning and 97.0MB in the end (delta: -23.2MB). Peak memory consumption was 16.4MB. Max. memory is 16.1GB. [2022-12-14 07:49:21,252 INFO L158 Benchmark]: TraceAbstraction took 61995.61ms. Allocated memory was 146.8MB in the beginning and 255.9MB in the end (delta: 109.1MB). Free memory was 96.6MB in the beginning and 126.1MB in the end (delta: -29.5MB). Peak memory consumption was 80.6MB. Max. memory is 16.1GB. [2022-12-14 07:49:21,252 INFO L158 Benchmark]: Witness Printer took 70.61ms. Allocated memory is still 255.9MB. Free memory was 126.1MB in the beginning and 203.8MB in the end (delta: -77.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-12-14 07:49:21,253 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 146.8MB. Free memory is still 99.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 341.16ms. Allocated memory is still 146.8MB. Free memory was 99.0MB in the beginning and 78.7MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.61ms. Allocated memory is still 146.8MB. Free memory was 78.7MB in the beginning and 76.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.44ms. Allocated memory is still 146.8MB. Free memory was 76.2MB in the beginning and 73.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 495.82ms. Allocated memory is still 146.8MB. Free memory was 73.8MB in the beginning and 97.0MB in the end (delta: -23.2MB). Peak memory consumption was 16.4MB. Max. memory is 16.1GB. * TraceAbstraction took 61995.61ms. Allocated memory was 146.8MB in the beginning and 255.9MB in the end (delta: 109.1MB). Free memory was 96.6MB in the beginning and 126.1MB in the end (delta: -29.5MB). Peak memory consumption was 80.6MB. Max. memory is 16.1GB. * Witness Printer took 70.61ms. Allocated memory is still 255.9MB. Free memory was 126.1MB in the beginning and 203.8MB in the end (delta: -77.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 681]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L669] struct ldv_list_head mutexes = { &(mutexes), &(mutexes) }; [L687] struct ldv_list_head drvlist = { &(drvlist), &(drvlist) }; [L709] CALL foo() [L690] FCALL ldv_initialize() [L691] int i; [L692] int N = __VERIFIER_nondet_int(); [L693] i=0 VAL [drvlist={4:0}, i=0, mutexes={3:0}, N=1] [L693] COND TRUE ilist, &drvlist) VAL [drvlist={4:0}, head={4:0}, mutexes={3:0}, new={5:8}] [L612] EXPR head->next VAL [drvlist={4:0}, head={4:0}, head={4:0}, head->next={4:0}, mutexes={3:0}, new={5:8}, new={5:8}] [L612] CALL __ldv_list_add(new, head, head->next) VAL [drvlist={4:0}, mutexes={3:0}, new={5:8}, next={4:0}, prev={4:0}] [L600] next->prev = new [L601] new->next = next [L602] new->prev = prev [L603] prev->next = new [L612] RET __ldv_list_add(new, head, head->next) VAL [drvlist={4:0}, head={4:0}, head={4:0}, head->next={4:0}, mutexes={3:0}, new={5:8}, new={5:8}] [L695] RET ldv_list_add(&me->list, &drvlist) VAL [drvlist={4:0}, i=0, me={5:0}, mutexes={3:0}, N=1] [L693] i++ VAL [drvlist={4:0}, i=1, me={5:0}, mutexes={3:0}, N=1] [L693] COND FALSE !(inext [L698] const typeof( ((typeof(*me) *)0)->list ) *__mptr = ((&drvlist)->next); [L698] me = ({ const typeof( ((typeof(*me) *)0)->list ) *__mptr = ((&drvlist)->next); (typeof(*me) *)( (char *)__mptr - ((size_t) &((typeof(*me) *)0)->list) );}) VAL [__mptr={5:8}, drvlist={4:0}, i=1, me={5:0}, me={5:0}, mutexes={3:0}, N=1] [L698] COND TRUE &me->list != (&drvlist) [L699] CALL mutex_lock(&me->m) [L673] CALL ldv_is_in_set(m, &mutexes) VAL [drvlist={4:0}, e={5:0}, mutexes={3:0}, s={3:0}] [L658] struct ldv_list_element *m; [L659] EXPR (s)->next [L659] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L659] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) VAL [__mptr={3:0}, drvlist={4:0}, e={5:0}, e={5:0}, m={3:-4}, mutexes={3:0}, s={3:0}, s={3:0}] [L659] COND FALSE !(&m->list != (s)) [L664] return 0; VAL [\result=0, __mptr={3:0}, drvlist={4:0}, e={5:0}, e={5:0}, m={3:-4}, mutexes={3:0}, s={3:0}, s={3:0}] [L673] RET ldv_is_in_set(m, &mutexes) VAL [drvlist={4:0}, ldv_is_in_set(m, &mutexes)=0, m={5:0}, m={5:0}, mutexes={3:0}] [L673] COND FALSE !(ldv_is_in_set(m, &mutexes)) [L674] CALL ldv_set_add(m, &mutexes) [L640] CALL, EXPR ldv_is_in_set(new, s) VAL [drvlist={4:0}, e={5:0}, mutexes={3:0}, s={3:0}] [L658] struct ldv_list_element *m; [L659] EXPR (s)->next [L659] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L659] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) VAL [__mptr={3:0}, drvlist={4:0}, e={5:0}, e={5:0}, m={3:-4}, mutexes={3:0}, s={3:0}, s={3:0}] [L659] COND FALSE !(&m->list != (s)) [L664] return 0; VAL [\result=0, __mptr={3:0}, drvlist={4:0}, e={5:0}, e={5:0}, m={3:-4}, mutexes={3:0}, s={3:0}, s={3:0}] [L640] RET, EXPR ldv_is_in_set(new, s) VAL [drvlist={4:0}, ldv_is_in_set(new, s)=0, mutexes={3:0}, new={5:0}, new={5:0}, s={3:0}, s={3:0}] [L640] COND TRUE !ldv_is_in_set(new, s) [L641] struct ldv_list_element *le; VAL [drvlist={4:0}, mutexes={3:0}, new={5:0}, new={5:0}, s={3:0}, s={3:0}] [L642] CALL, EXPR ldv_successful_malloc(sizeof(struct ldv_list_element)) VAL [drvlist={4:0}, mutexes={3:0}] [L580] void *ptr = malloc(size); [L581] CALL assume_abort_if_not(ptr!=0) [L569] COND FALSE !(!cond) [L581] RET assume_abort_if_not(ptr!=0) [L582] return ptr; [L642] RET, EXPR ldv_successful_malloc(sizeof(struct ldv_list_element)) VAL [drvlist={4:0}, ldv_successful_malloc(sizeof(struct ldv_list_element))={10:0}, mutexes={3:0}, new={5:0}, new={5:0}, s={3:0}, s={3:0}] [L642] le = (struct ldv_list_element*)ldv_successful_malloc(sizeof(struct ldv_list_element)) [L643] le->e = new VAL [drvlist={4:0}, le={10:0}, mutexes={3:0}, new={5:0}, new={5:0}, s={3:0}, s={3:0}] [L644] CALL ldv_list_add(&le->list, s) VAL [drvlist={4:0}, head={3:0}, mutexes={3:0}, new={10:4}] [L612] EXPR head->next VAL [drvlist={4:0}, head={3:0}, head={3:0}, head->next={3:0}, mutexes={3:0}, new={10:4}, new={10:4}] [L612] CALL __ldv_list_add(new, head, head->next) VAL [drvlist={4:0}, mutexes={3:0}, new={10:4}, next={3:0}, prev={3:0}] [L600] next->prev = new [L601] new->next = next [L602] new->prev = prev [L603] prev->next = new [L612] RET __ldv_list_add(new, head, head->next) VAL [drvlist={4:0}, head={3:0}, head={3:0}, head->next={3:0}, mutexes={3:0}, new={10:4}, new={10:4}] [L644] RET ldv_list_add(&le->list, s) VAL [drvlist={4:0}, le={10:0}, mutexes={3:0}, new={5:0}, new={5:0}, s={3:0}, s={3:0}] [L674] RET ldv_set_add(m, &mutexes) [L699] RET mutex_lock(&me->m) [L700] CALL ldv_list_del(&me->list) VAL [drvlist={4:0}, mutexes={3:0}] [L620] EXPR entry->prev [L620] EXPR entry->next [L620] CALL __ldv_list_del(entry->prev, entry->next) [L607] next->prev = prev [L608] prev->next = next [L620] RET __ldv_list_del(entry->prev, entry->next) [L700] RET ldv_list_del(&me->list) VAL [__mptr={5:8}, drvlist={4:0}, i=1, me={5:0}, me={5:0}, mutexes={3:0}, N=1] [L698] EXPR (me)->list.next [L698] const typeof( ((typeof(*(me)) *)0)->list ) *__mptr = ((me)->list.next); [L698] me = ({ const typeof( ((typeof(*(me)) *)0)->list ) *__mptr = ((me)->list.next); (typeof(*(me)) *)( (char *)__mptr - ((size_t) &((typeof(*(me)) *)0)->list) );}) VAL [__mptr={4:0}, __mptr={5:8}, drvlist={4:0}, i=1, me={4:-8}, me={5:0}, mutexes={3:0}, N=1] [L698] COND FALSE !(&me->list != (&drvlist)) [L702] EXPR (&drvlist)->next [L702] const typeof( ((typeof(*me) *)0)->list ) *__mptr = ((&drvlist)->next); [L702] me = ({ const typeof( ((typeof(*me) *)0)->list ) *__mptr = ((&drvlist)->next); (typeof(*me) *)( (char *)__mptr - ((size_t) &((typeof(*me) *)0)->list) );}) VAL [__mptr={4:0}, __mptr={5:8}, __mptr={4:0}, drvlist={4:0}, i=1, me={5:0}, me={4:-8}, mutexes={3:0}, N=1] [L702] COND FALSE !(&me->list != (&drvlist)) [L705] CALL ldv_check_final_state() [L681] CALL, EXPR ldv_set_empty(&mutexes) [L667] CALL, EXPR ldv_list_empty(s) [L624] EXPR head->next [L624] return head->next == head; [L667] RET, EXPR ldv_list_empty(s) [L667] return ldv_list_empty(s); [L681] RET, EXPR ldv_set_empty(&mutexes) [L681] COND TRUE !ldv_set_empty(&mutexes) [L681] reach_error() VAL [drvlist={4:0}, mutexes={3:0}] - UnprovableResult [Line: 673]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 677]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 54 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 61.9s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 13.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 24 mSolverCounterUnknown, 1266 SdHoareTripleChecker+Valid, 6.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1253 mSDsluCounter, 2286 SdHoareTripleChecker+Invalid, 5.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1935 mSDsCounter, 671 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4910 IncrementalHoareTripleChecker+Invalid, 5605 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 671 mSolverCounterUnsat, 351 mSDtfsCounter, 4910 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 538 GetRequests, 200 SyntacticMatches, 8 SemanticMatches, 330 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7903 ImplicationChecksByTransitivity, 33.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=131occurred in iteration=8, InterpolantAutomatonStates: 137, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 207 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 24.9s InterpolantComputationTime, 366 NumberOfCodeBlocks, 366 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 361 ConstructedInterpolants, 10 QuantifiedInterpolants, 15807 SizeOfPredicates, 90 NumberOfNonLiveVariables, 1470 ConjunctsInSsa, 381 ConjunctsInUnsatCore, 14 InterpolantComputations, 4 PerfectInterpolantSequences, 17/59 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-12-14 07:49:21,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8260e89-afb3-4786-ba1e-339d7869f515/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE