./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 38b53e6a 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_eee4b6f4-6ab8-42e1-9f11-0740098186d0/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee4b6f4-6ab8-42e1-9f11-0740098186d0/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee4b6f4-6ab8-42e1-9f11-0740098186d0/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee4b6f4-6ab8-42e1-9f11-0740098186d0/bin/utaipan-ByfvJB40ur/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_eee4b6f4-6ab8-42e1-9f11-0740098186d0/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee4b6f4-6ab8-42e1-9f11-0740098186d0/bin/utaipan-ByfvJB40ur --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-38b53e6 [2022-11-25 23:42:10,071 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:42:10,073 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:42:10,094 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:42:10,094 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:42:10,096 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:42:10,097 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:42:10,099 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:42:10,101 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:42:10,102 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:42:10,103 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:42:10,104 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:42:10,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:42:10,106 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:42:10,107 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:42:10,108 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:42:10,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:42:10,110 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:42:10,112 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:42:10,113 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:42:10,115 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:42:10,123 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:42:10,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:42:10,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:42:10,128 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:42:10,128 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:42:10,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:42:10,130 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:42:10,130 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:42:10,131 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:42:10,131 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:42:10,132 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:42:10,133 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:42:10,134 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:42:10,141 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:42:10,143 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:42:10,144 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:42:10,144 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:42:10,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:42:10,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:42:10,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:42:10,150 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee4b6f4-6ab8-42e1-9f11-0740098186d0/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-25 23:42:10,187 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:42:10,188 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:42:10,188 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:42:10,188 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:42:10,189 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:42:10,189 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:42:10,189 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:42:10,190 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:42:10,190 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:42:10,190 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:42:10,190 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:42:10,190 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:42:10,196 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:42:10,196 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:42:10,196 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:42:10,196 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:42:10,197 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:42:10,197 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:42:10,198 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:42:10,198 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:42:10,198 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:42:10,198 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:42:10,198 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:42:10,199 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:42:10,199 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:42:10,199 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:42:10,200 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:42:10,200 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:42:10,201 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:42:10,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:42:10,201 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:42:10,201 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:42:10,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:42:10,202 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:42:10,202 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:42:10,203 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:42:10,204 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:42:10,204 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:42:10,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:42:10,204 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:42:10,205 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:42:10,205 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_eee4b6f4-6ab8-42e1-9f11-0740098186d0/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee4b6f4-6ab8-42e1-9f11-0740098186d0/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52ed361cdf08860b8c7c7d564ef95393de2d3a38663ac135cf0da9ded1f39b3f [2022-11-25 23:42:10,470 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:42:10,499 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:42:10,501 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:42:10,503 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:42:10,504 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:42:10,505 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee4b6f4-6ab8-42e1-9f11-0740098186d0/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i [2022-11-25 23:42:13,599 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:42:13,886 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:42:13,891 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee4b6f4-6ab8-42e1-9f11-0740098186d0/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i [2022-11-25 23:42:13,912 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee4b6f4-6ab8-42e1-9f11-0740098186d0/bin/utaipan-ByfvJB40ur/data/be7abda9c/50ca13ae43624a2aaa2fc300a922902e/FLAG66d47cf3d [2022-11-25 23:42:14,160 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee4b6f4-6ab8-42e1-9f11-0740098186d0/bin/utaipan-ByfvJB40ur/data/be7abda9c/50ca13ae43624a2aaa2fc300a922902e [2022-11-25 23:42:14,163 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:42:14,164 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:42:14,166 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:42:14,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:42:14,173 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:42:14,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:42:14" (1/1) ... [2022-11-25 23:42:14,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39881d28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:14, skipping insertion in model container [2022-11-25 23:42:14,176 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:42:14" (1/1) ... [2022-11-25 23:42:14,183 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:42:14,221 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:42:14,605 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_eee4b6f4-6ab8-42e1-9f11-0740098186d0/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i[26271,26284] [2022-11-25 23:42:14,617 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_eee4b6f4-6ab8-42e1-9f11-0740098186d0/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i[26396,26409] [2022-11-25 23:42:14,619 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_eee4b6f4-6ab8-42e1-9f11-0740098186d0/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i[26511,26524] [2022-11-25 23:42:14,647 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:42:14,659 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:42:14,728 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_eee4b6f4-6ab8-42e1-9f11-0740098186d0/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i[26271,26284] [2022-11-25 23:42:14,731 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_eee4b6f4-6ab8-42e1-9f11-0740098186d0/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i[26396,26409] [2022-11-25 23:42:14,732 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_eee4b6f4-6ab8-42e1-9f11-0740098186d0/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i[26511,26524] [2022-11-25 23:42:14,748 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:42:14,779 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:42:14,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:14 WrapperNode [2022-11-25 23:42:14,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:42:14,782 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:42:14,783 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:42:14,783 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:42:14,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:14" (1/1) ... [2022-11-25 23:42:14,816 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:14" (1/1) ... [2022-11-25 23:42:14,850 INFO L138 Inliner]: procedures = 142, calls = 63, calls flagged for inlining = 14, calls inlined = 13, statements flattened = 162 [2022-11-25 23:42:14,852 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:42:14,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:42:14,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:42:14,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:42:14,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:14" (1/1) ... [2022-11-25 23:42:14,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:14" (1/1) ... [2022-11-25 23:42:14,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:14" (1/1) ... [2022-11-25 23:42:14,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:14" (1/1) ... [2022-11-25 23:42:14,895 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:14" (1/1) ... [2022-11-25 23:42:14,915 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:14" (1/1) ... [2022-11-25 23:42:14,917 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:14" (1/1) ... [2022-11-25 23:42:14,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:14" (1/1) ... [2022-11-25 23:42:14,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:42:14,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:42:14,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:42:14,927 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:42:14,928 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:14" (1/1) ... [2022-11-25 23:42:14,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:42:14,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee4b6f4-6ab8-42e1-9f11-0740098186d0/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:42:14,955 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee4b6f4-6ab8-42e1-9f11-0740098186d0/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:42:14,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee4b6f4-6ab8-42e1-9f11-0740098186d0/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:42:14,990 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2022-11-25 23:42:14,990 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2022-11-25 23:42:14,991 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2022-11-25 23:42:14,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2022-11-25 23:42:14,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 23:42:14,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:42:14,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 23:42:14,991 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2022-11-25 23:42:14,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2022-11-25 23:42:14,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 23:42:14,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:42:14,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-25 23:42:14,992 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2022-11-25 23:42:14,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2022-11-25 23:42:14,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:42:14,992 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2022-11-25 23:42:14,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2022-11-25 23:42:14,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:42:14,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:42:15,140 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:42:15,142 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:42:15,547 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:42:15,652 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:42:15,652 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-25 23:42:15,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:42:15 BoogieIcfgContainer [2022-11-25 23:42:15,655 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:42:15,657 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:42:15,657 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:42:15,664 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:42:15,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:42:14" (1/3) ... [2022-11-25 23:42:15,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a76317d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:42:15, skipping insertion in model container [2022-11-25 23:42:15,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:14" (2/3) ... [2022-11-25 23:42:15,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a76317d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:42:15, skipping insertion in model container [2022-11-25 23:42:15,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:42:15" (3/3) ... [2022-11-25 23:42:15,670 INFO L112 eAbstractionObserver]: Analyzing ICFG test_mutex_unbounded-2.i [2022-11-25 23:42:15,690 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:42:15,690 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-25 23:42:15,732 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:42:15,738 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;@6f4e5520, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:42:15,738 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-25 23:42:15,742 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) [2022-11-25 23:42:15,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-25 23:42:15,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:42:15,750 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 23:42:15,751 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:42:15,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:42:15,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1775127545, now seen corresponding path program 1 times [2022-11-25 23:42:15,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:42:15,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26203742] [2022-11-25 23:42:15,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:42:15,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:42:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:42:16,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:42:16,388 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:42:16,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26203742] [2022-11-25 23:42:16,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26203742] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:42:16,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:42:16,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:42:16,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717010096] [2022-11-25 23:42:16,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:42:16,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:42:16,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:42:16,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:42:16,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:42:16,428 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) [2022-11-25 23:42:16,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:42:16,628 INFO L93 Difference]: Finished difference Result 145 states and 189 transitions. [2022-11-25 23:42:16,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:42:16,631 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 [2022-11-25 23:42:16,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:42:16,640 INFO L225 Difference]: With dead ends: 145 [2022-11-25 23:42:16,640 INFO L226 Difference]: Without dead ends: 92 [2022-11-25 23:42:16,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:42:16,679 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 [2022-11-25 23:42:16,681 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] [2022-11-25 23:42:16,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-11-25 23:42:16,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 72. [2022-11-25 23:42:16,752 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) [2022-11-25 23:42:16,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 94 transitions. [2022-11-25 23:42:16,757 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 94 transitions. Word has length 6 [2022-11-25 23:42:16,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:42:16,758 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 94 transitions. [2022-11-25 23:42:16,758 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) [2022-11-25 23:42:16,758 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 94 transitions. [2022-11-25 23:42:16,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 23:42:16,761 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:42:16,761 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:42:16,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:42:16,762 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:42:16,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:42:16,763 INFO L85 PathProgramCache]: Analyzing trace with hash -2012936512, now seen corresponding path program 1 times [2022-11-25 23:42:16,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:42:16,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446371480] [2022-11-25 23:42:16,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:42:16,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:42:16,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:42:16,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:42:16,855 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:42:16,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446371480] [2022-11-25 23:42:16,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446371480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:42:16,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:42:16,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:42:16,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87523265] [2022-11-25 23:42:16,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:42:16,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:42:16,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:42:16,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:42:16,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:42:16,870 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) [2022-11-25 23:42:16,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:42:16,988 INFO L93 Difference]: Finished difference Result 82 states and 109 transitions. [2022-11-25 23:42:16,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:42:16,990 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 [2022-11-25 23:42:16,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:42:16,995 INFO L225 Difference]: With dead ends: 82 [2022-11-25 23:42:16,995 INFO L226 Difference]: Without dead ends: 80 [2022-11-25 23:42:16,996 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 [2022-11-25 23:42:16,997 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 [2022-11-25 23:42:16,997 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] [2022-11-25 23:42:16,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-25 23:42:17,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-11-25 23:42:17,015 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) [2022-11-25 23:42:17,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 106 transitions. [2022-11-25 23:42:17,021 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 106 transitions. Word has length 11 [2022-11-25 23:42:17,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:42:17,022 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 106 transitions. [2022-11-25 23:42:17,022 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) [2022-11-25 23:42:17,022 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 106 transitions. [2022-11-25 23:42:17,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-25 23:42:17,023 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:42:17,023 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:42:17,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 23:42:17,024 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:42:17,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:42:17,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1855141470, now seen corresponding path program 1 times [2022-11-25 23:42:17,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:42:17,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052593051] [2022-11-25 23:42:17,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:42:17,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:42:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:42:17,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:42:17,183 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:42:17,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052593051] [2022-11-25 23:42:17,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052593051] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:42:17,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:42:17,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:42:17,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663262476] [2022-11-25 23:42:17,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:42:17,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:42:17,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:42:17,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:42:17,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:42:17,189 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) [2022-11-25 23:42:17,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:42:17,377 INFO L93 Difference]: Finished difference Result 139 states and 178 transitions. [2022-11-25 23:42:17,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:42:17,378 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 [2022-11-25 23:42:17,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:42:17,379 INFO L225 Difference]: With dead ends: 139 [2022-11-25 23:42:17,379 INFO L226 Difference]: Without dead ends: 65 [2022-11-25 23:42:17,380 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 [2022-11-25 23:42:17,381 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:42:17,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 138 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:42:17,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-25 23:42:17,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2022-11-25 23:42:17,389 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) [2022-11-25 23:42:17,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 74 transitions. [2022-11-25 23:42:17,390 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 74 transitions. Word has length 12 [2022-11-25 23:42:17,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:42:17,390 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 74 transitions. [2022-11-25 23:42:17,390 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) [2022-11-25 23:42:17,391 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 74 transitions. [2022-11-25 23:42:17,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-25 23:42:17,391 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:42:17,391 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:42:17,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 23:42:17,392 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:42:17,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:42:17,392 INFO L85 PathProgramCache]: Analyzing trace with hash -598092077, now seen corresponding path program 1 times [2022-11-25 23:42:17,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:42:17,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635713312] [2022-11-25 23:42:17,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:42:17,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:42:17,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:42:17,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:42:17,828 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:42:17,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635713312] [2022-11-25 23:42:17,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635713312] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:42:17,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307134876] [2022-11-25 23:42:17,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:42:17,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:42:17,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee4b6f4-6ab8-42e1-9f11-0740098186d0/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:42:17,838 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee4b6f4-6ab8-42e1-9f11-0740098186d0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:42:17,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee4b6f4-6ab8-42e1-9f11-0740098186d0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 23:42:17,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:42:18,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-25 23:42:18,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:42:18,214 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-25 23:42:18,215 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 [2022-11-25 23:42:18,543 INFO L321 Elim1Store]: treesize reduction 117, result has 35.4 percent of original size [2022-11-25 23:42:18,544 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 [2022-11-25 23:42:18,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-25 23:42:18,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-25 23:42:18,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-25 23:42:19,020 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-11-25 23:42:19,021 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 [2022-11-25 23:42:19,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-25 23:42:19,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:42:19,093 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 [2022-11-25 23:42:19,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-25 23:42:19,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-25 23:42:19,602 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 [2022-11-25 23:42:19,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:42:19,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:42:19,974 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 23:42:19,975 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 [2022-11-25 23:42:19,990 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 [2022-11-25 23:42:20,006 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 [2022-11-25 23:42:20,028 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 [2022-11-25 23:42:20,047 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 [2022-11-25 23:42:20,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:42:20,321 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:42:20,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:42:20,324 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 30 treesize of output 28 [2022-11-25 23:42:20,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:42:20,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:42:20,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:42:20,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307134876] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:42:20,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [49231446] [2022-11-25 23:42:20,497 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-11-25 23:42:20,498 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:42:20,502 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:42:20,507 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:42:20,508 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:42:20,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-25 23:42:20,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-25 23:42:20,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:42:20,871 INFO L321 Elim1Store]: treesize reduction 128, result has 32.3 percent of original size [2022-11-25 23:42:20,871 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 [2022-11-25 23:42:20,926 INFO L321 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-11-25 23:42:20,927 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 [2022-11-25 23:42:20,963 INFO L321 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2022-11-25 23:42:20,963 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 [2022-11-25 23:42:20,995 INFO L321 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-11-25 23:42:20,995 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 [2022-11-25 23:42:21,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:42:21,112 INFO L321 Elim1Store]: treesize reduction 147, result has 22.2 percent of original size [2022-11-25 23:42:21,112 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 [2022-11-25 23:42:21,140 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 [2022-11-25 23:42:21,145 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 [2022-11-25 23:42:21,157 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 [2022-11-25 23:42:21,161 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 [2022-11-25 23:42:21,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:42:21,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:42:21,197 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 [2022-11-25 23:42:21,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:42:21,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:42:21,212 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 [2022-11-25 23:42:21,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:42:21,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:42:21,252 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 [2022-11-25 23:42:21,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:42:21,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:42:21,267 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 [2022-11-25 23:42:21,315 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 [2022-11-25 23:42:21,324 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 [2022-11-25 23:42:21,359 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 [2022-11-25 23:42:21,366 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 [2022-11-25 23:42:21,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:42:21,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:42:21,617 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 [2022-11-25 23:42:21,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:42:21,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:42:21,633 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 [2022-11-25 23:42:21,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:42:21,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:42:21,814 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 [2022-11-25 23:42:21,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:42:21,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:42:21,830 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 [2022-11-25 23:42:22,106 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 [2022-11-25 23:42:22,114 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 [2022-11-25 23:42:22,130 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 [2022-11-25 23:42:22,140 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 [2022-11-25 23:42:22,306 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 [2022-11-25 23:42:22,316 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 [2022-11-25 23:42:22,326 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 [2022-11-25 23:42:22,334 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 [2022-11-25 23:42:23,082 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_successful_malloc with input of size 27 for LOIs [2022-11-25 23:42:23,087 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_list_add with input of size 34 for LOIs [2022-11-25 23:42:23,137 INFO L197 IcfgInterpreter]: Interpreting procedure __ldv_list_add with input of size 42 for LOIs [2022-11-25 23:42:23,178 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:42:26,775 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 [2022-11-25 23:42:26,776 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:42:26,776 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:42:26,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 32 [2022-11-25 23:42:26,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184893556] [2022-11-25 23:42:26,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:42:26,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-25 23:42:26,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:42:26,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-25 23:42:26,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=2056, Unknown=2, NotChecked=0, Total=2256 [2022-11-25 23:42:26,779 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) [2022-11-25 23:42:28,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:42:28,675 INFO L93 Difference]: Finished difference Result 143 states and 176 transitions. [2022-11-25 23:42:28,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-25 23:42:28,676 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 [2022-11-25 23:42:28,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:42:28,681 INFO L225 Difference]: With dead ends: 143 [2022-11-25 23:42:28,683 INFO L226 Difference]: Without dead ends: 119 [2022-11-25 23:42:28,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 771 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=427, Invalid=3603, Unknown=2, NotChecked=0, Total=4032 [2022-11-25 23:42:28,687 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 493 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:42:28,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 449 Invalid, 1397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-25 23:42:28,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-11-25 23:42:28,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2022-11-25 23:42:28,722 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) [2022-11-25 23:42:28,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 122 transitions. [2022-11-25 23:42:28,724 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 122 transitions. Word has length 19 [2022-11-25 23:42:28,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:42:28,724 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 122 transitions. [2022-11-25 23:42:28,724 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) [2022-11-25 23:42:28,725 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 122 transitions. [2022-11-25 23:42:28,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-25 23:42:28,726 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:42:28,726 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] [2022-11-25 23:42:28,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee4b6f4-6ab8-42e1-9f11-0740098186d0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 23:42:28,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee4b6f4-6ab8-42e1-9f11-0740098186d0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:42:28,932 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:42:28,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:42:28,932 INFO L85 PathProgramCache]: Analyzing trace with hash 839979050, now seen corresponding path program 1 times [2022-11-25 23:42:28,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:42:28,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899024258] [2022-11-25 23:42:28,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:42:28,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:42:29,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:42:31,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:42:31,649 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:42:31,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899024258] [2022-11-25 23:42:31,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899024258] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:42:31,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484873077] [2022-11-25 23:42:31,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:42:31,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:42:31,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee4b6f4-6ab8-42e1-9f11-0740098186d0/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:42:31,651 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee4b6f4-6ab8-42e1-9f11-0740098186d0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:42:31,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee4b6f4-6ab8-42e1-9f11-0740098186d0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 23:42:31,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:42:31,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 107 conjunts are in the unsatisfiable core [2022-11-25 23:42:31,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:42:32,056 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-25 23:42:32,057 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 [2022-11-25 23:42:32,188 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 [2022-11-25 23:42:32,197 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 [2022-11-25 23:42:32,607 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 [2022-11-25 23:42:32,641 INFO L321 Elim1Store]: treesize reduction 50, result has 29.6 percent of original size [2022-11-25 23:42:32,641 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 [2022-11-25 23:42:32,670 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-11-25 23:42:32,671 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 [2022-11-25 23:42:32,687 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 23:42:32,688 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 [2022-11-25 23:42:32,707 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 23:42:32,707 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 [2022-11-25 23:42:32,714 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 [2022-11-25 23:42:32,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:42:32,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:42:37,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484873077] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:42:37,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1523758889] [2022-11-25 23:42:37,853 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2022-11-25 23:42:37,853 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:42:37,853 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:42:37,853 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:42:37,853 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:42:37,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-25 23:42:37,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-25 23:42:38,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:42:38,226 INFO L321 Elim1Store]: treesize reduction 147, result has 22.2 percent of original size [2022-11-25 23:42:38,227 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 [2022-11-25 23:42:38,277 INFO L321 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-11-25 23:42:38,278 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 [2022-11-25 23:42:38,317 INFO L321 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2022-11-25 23:42:38,317 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 [2022-11-25 23:42:38,352 INFO L321 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-11-25 23:42:38,352 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 [2022-11-25 23:42:38,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:42:38,493 INFO L321 Elim1Store]: treesize reduction 128, result has 32.3 percent of original size [2022-11-25 23:42:38,493 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 [2022-11-25 23:42:38,522 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 [2022-11-25 23:42:38,526 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 [2022-11-25 23:42:38,537 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 [2022-11-25 23:42:38,541 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 [2022-11-25 23:42:38,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:42:38,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:42:38,589 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 [2022-11-25 23:42:38,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:42:38,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:42:38,601 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 [2022-11-25 23:42:38,614 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-25 23:42:38,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:42:38,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:42:38,754 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 [2022-11-25 23:42:38,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:42:38,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:42:38,766 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 [2022-11-25 23:42:38,784 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-25 23:42:38,923 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 [2022-11-25 23:42:38,931 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 [2022-11-25 23:42:38,940 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-25 23:42:38,942 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-25 23:42:39,033 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 [2022-11-25 23:42:39,041 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 [2022-11-25 23:42:39,051 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-25 23:42:39,052 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-25 23:42:40,133 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_successful_malloc with input of size 27 for LOIs [2022-11-25 23:42:40,139 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_is_in_set with input of size 90 for LOIs [2022-11-25 23:42:40,200 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_list_add with input of size 34 for LOIs [2022-11-25 23:42:40,243 INFO L197 IcfgInterpreter]: Interpreting procedure __ldv_list_add with input of size 42 for LOIs [2022-11-25 23:42:40,287 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:42:45,175 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 [2022-11-25 23:42:45,175 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:42:45,175 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 23:42:45,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 27 [2022-11-25 23:42:45,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328662387] [2022-11-25 23:42:45,178 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 23:42:45,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-25 23:42:45,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:42:45,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-25 23:42:45,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=2328, Unknown=6, NotChecked=0, Total=2550 [2022-11-25 23:42:45,181 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) [2022-11-25 23:42:48,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:42:49,000 INFO L93 Difference]: Finished difference Result 242 states and 315 transitions. [2022-11-25 23:42:49,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-25 23:42:49,002 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 [2022-11-25 23:42:49,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:42:49,004 INFO L225 Difference]: With dead ends: 242 [2022-11-25 23:42:49,004 INFO L226 Difference]: Without dead ends: 158 [2022-11-25 23:42:49,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1522 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=496, Invalid=4752, Unknown=8, NotChecked=0, Total=5256 [2022-11-25 23:42:49,007 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 147 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 88 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-25 23:42:49,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 346 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 857 Invalid, 4 Unknown, 0 Unchecked, 1.9s Time] [2022-11-25 23:42:49,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-11-25 23:42:49,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 120. [2022-11-25 23:42:49,037 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) [2022-11-25 23:42:49,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 151 transitions. [2022-11-25 23:42:49,038 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 151 transitions. Word has length 25 [2022-11-25 23:42:49,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:42:49,038 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 151 transitions. [2022-11-25 23:42:49,039 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) [2022-11-25 23:42:49,039 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 151 transitions. [2022-11-25 23:42:49,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-25 23:42:49,040 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:42:49,040 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] [2022-11-25 23:42:49,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee4b6f4-6ab8-42e1-9f11-0740098186d0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 23:42:49,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee4b6f4-6ab8-42e1-9f11-0740098186d0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:42:49,246 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:42:49,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:42:49,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1101495842, now seen corresponding path program 2 times [2022-11-25 23:42:49,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:42:49,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285834776] [2022-11-25 23:42:49,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:42:49,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:42:49,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:42:54,886 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 23:42:54,886 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:42:54,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285834776] [2022-11-25 23:42:54,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285834776] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:42:54,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078649628] [2022-11-25 23:42:54,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 23:42:54,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:42:54,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee4b6f4-6ab8-42e1-9f11-0740098186d0/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:42:54,895 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee4b6f4-6ab8-42e1-9f11-0740098186d0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:42:54,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee4b6f4-6ab8-42e1-9f11-0740098186d0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 23:42:55,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-25 23:42:55,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:42:55,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 200 conjunts are in the unsatisfiable core [2022-11-25 23:42:55,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:42:55,503 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-25 23:42:55,503 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 [2022-11-25 23:42:55,718 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 [2022-11-25 23:42:55,727 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 [2022-11-25 23:42:56,419 INFO L321 Elim1Store]: treesize reduction 50, result has 29.6 percent of original size [2022-11-25 23:42:56,419 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 [2022-11-25 23:42:56,481 INFO L321 Elim1Store]: treesize reduction 67, result has 26.4 percent of original size [2022-11-25 23:42:56,482 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 [2022-11-25 23:42:56,493 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 [2022-11-25 23:42:56,535 INFO L321 Elim1Store]: treesize reduction 22, result has 47.6 percent of original size [2022-11-25 23:42:56,536 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 [2022-11-25 23:42:56,567 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-25 23:42:56,568 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 [2022-11-25 23:42:56,580 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 [2022-11-25 23:42:56,590 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 [2022-11-25 23:42:56,636 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 [2022-11-25 23:42:56,642 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 [2022-11-25 23:42:57,221 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-25 23:42:57,222 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 [2022-11-25 23:42:57,434 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 [2022-11-25 23:42:57,441 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 [2022-11-25 23:42:58,067 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 [2022-11-25 23:42:58,114 INFO L321 Elim1Store]: treesize reduction 46, result has 35.2 percent of original size [2022-11-25 23:42:58,114 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 56 treesize of output 62 [2022-11-25 23:42:58,182 INFO L321 Elim1Store]: treesize reduction 47, result has 42.7 percent of original size [2022-11-25 23:42:58,182 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 65 treesize of output 88 [2022-11-25 23:42:58,236 INFO L321 Elim1Store]: treesize reduction 45, result has 43.0 percent of original size [2022-11-25 23:42:58,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 56 [2022-11-25 23:42:58,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-25 23:42:58,326 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 [2022-11-25 23:42:58,334 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 [2022-11-25 23:42:58,341 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-25 23:42:58,374 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-25 23:42:58,742 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:42:58,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:43:00,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078649628] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:43:00,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1742685665] [2022-11-25 23:43:00,307 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2022-11-25 23:43:00,307 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:43:00,308 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:43:00,308 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:43:00,308 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:43:00,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-25 23:43:00,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-25 23:43:00,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:43:00,705 INFO L321 Elim1Store]: treesize reduction 131, result has 34.8 percent of original size [2022-11-25 23:43:00,706 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 [2022-11-25 23:43:00,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:43:00,813 INFO L321 Elim1Store]: treesize reduction 147, result has 22.2 percent of original size [2022-11-25 23:43:00,813 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 [2022-11-25 23:43:00,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:43:00,952 INFO L321 Elim1Store]: treesize reduction 128, result has 32.3 percent of original size [2022-11-25 23:43:00,952 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 [2022-11-25 23:43:00,975 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 [2022-11-25 23:43:00,980 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 [2022-11-25 23:43:00,991 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 [2022-11-25 23:43:00,995 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 [2022-11-25 23:43:01,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:43:01,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:43:01,055 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 [2022-11-25 23:43:01,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:43:01,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:43:01,071 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 [2022-11-25 23:43:01,086 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-25 23:43:01,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:43:01,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:43:01,241 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 [2022-11-25 23:43:01,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:43:01,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:43:01,256 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 [2022-11-25 23:43:01,270 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-25 23:43:01,312 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 [2022-11-25 23:43:01,319 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 [2022-11-25 23:43:01,341 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 [2022-11-25 23:43:01,349 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 [2022-11-25 23:43:02,297 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_successful_malloc with input of size 27 for LOIs [2022-11-25 23:43:02,302 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_is_in_set with input of size 89 for LOIs [2022-11-25 23:43:02,364 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_list_add with input of size 34 for LOIs [2022-11-25 23:43:02,409 INFO L197 IcfgInterpreter]: Interpreting procedure __ldv_list_add with input of size 42 for LOIs [2022-11-25 23:43:02,451 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:43:08,099 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2294#(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 [2022-11-25 23:43:08,099 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:43:08,099 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 23:43:08,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2022-11-25 23:43:08,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284370513] [2022-11-25 23:43:08,100 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 23:43:08,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-25 23:43:08,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:43:08,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-25 23:43:08,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=338, Invalid=4076, Unknown=8, NotChecked=0, Total=4422 [2022-11-25 23:43:08,103 INFO L87 Difference]: Start difference. First operand 120 states and 151 transitions. Second operand has 43 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 31 states have internal predecessors, (44), 13 states have call successors, (13), 9 states have call predecessors, (13), 14 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2022-11-25 23:43:12,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:43:12,892 INFO L93 Difference]: Finished difference Result 233 states and 297 transitions. [2022-11-25 23:43:12,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-25 23:43:12,892 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 31 states have internal predecessors, (44), 13 states have call successors, (13), 9 states have call predecessors, (13), 14 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) Word has length 38 [2022-11-25 23:43:12,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:43:12,894 INFO L225 Difference]: With dead ends: 233 [2022-11-25 23:43:12,894 INFO L226 Difference]: Without dead ends: 149 [2022-11-25 23:43:12,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2695 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=648, Invalid=6996, Unknown=12, NotChecked=0, Total=7656 [2022-11-25 23:43:12,898 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 192 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 1196 mSolverCounterSat, 116 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 1328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1196 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-25 23:43:12,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 434 Invalid, 1328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1196 Invalid, 16 Unknown, 0 Unchecked, 2.6s Time] [2022-11-25 23:43:12,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-11-25 23:43:12,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 101. [2022-11-25 23:43:12,924 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) [2022-11-25 23:43:12,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 125 transitions. [2022-11-25 23:43:12,926 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 125 transitions. Word has length 38 [2022-11-25 23:43:12,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:43:12,926 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 125 transitions. [2022-11-25 23:43:12,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 31 states have internal predecessors, (44), 13 states have call successors, (13), 9 states have call predecessors, (13), 14 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2022-11-25 23:43:12,927 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 125 transitions. [2022-11-25 23:43:12,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-25 23:43:12,933 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:43:12,934 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] [2022-11-25 23:43:12,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee4b6f4-6ab8-42e1-9f11-0740098186d0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 23:43:13,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee4b6f4-6ab8-42e1-9f11-0740098186d0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-25 23:43:13,139 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:43:13,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:43:13,139 INFO L85 PathProgramCache]: Analyzing trace with hash -167978734, now seen corresponding path program 1 times [2022-11-25 23:43:13,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:43:13,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036615308] [2022-11-25 23:43:13,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:43:13,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:43:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:43:13,229 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 23:43:13,229 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:43:13,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036615308] [2022-11-25 23:43:13,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036615308] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:43:13,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:43:13,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:43:13,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202353215] [2022-11-25 23:43:13,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:43:13,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:43:13,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:43:13,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:43:13,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:43:13,232 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) [2022-11-25 23:43:13,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:43:13,338 INFO L93 Difference]: Finished difference Result 175 states and 218 transitions. [2022-11-25 23:43:13,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:43:13,339 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 [2022-11-25 23:43:13,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:43:13,342 INFO L225 Difference]: With dead ends: 175 [2022-11-25 23:43:13,342 INFO L226 Difference]: Without dead ends: 109 [2022-11-25 23:43:13,343 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 [2022-11-25 23:43:13,344 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 [2022-11-25 23:43:13,345 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] [2022-11-25 23:43:13,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-11-25 23:43:13,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 107. [2022-11-25 23:43:13,374 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) [2022-11-25 23:43:13,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 131 transitions. [2022-11-25 23:43:13,377 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 131 transitions. Word has length 40 [2022-11-25 23:43:13,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:43:13,380 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 131 transitions. [2022-11-25 23:43:13,380 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) [2022-11-25 23:43:13,381 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 131 transitions. [2022-11-25 23:43:13,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-25 23:43:13,384 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:43:13,385 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] [2022-11-25 23:43:13,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 23:43:13,385 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:43:13,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:43:13,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1456415474, now seen corresponding path program 1 times [2022-11-25 23:43:13,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:43:13,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952131502] [2022-11-25 23:43:13,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:43:13,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:43:13,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:43:19,062 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 23:43:19,063 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:43:19,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952131502] [2022-11-25 23:43:19,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952131502] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:43:19,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312777182] [2022-11-25 23:43:19,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:43:19,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:43:19,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee4b6f4-6ab8-42e1-9f11-0740098186d0/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:43:19,069 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee4b6f4-6ab8-42e1-9f11-0740098186d0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:43:19,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee4b6f4-6ab8-42e1-9f11-0740098186d0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 23:43:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:43:19,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-25 23:43:19,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:43:19,932 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 23:43:19,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:43:20,594 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 [2022-11-25 23:43:20,598 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 [2022-11-25 23:43:20,609 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 23:43:20,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312777182] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:43:20,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [149616700] [2022-11-25 23:43:20,612 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2022-11-25 23:43:20,612 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:43:20,613 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:43:20,613 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:43:20,613 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:43:20,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-25 23:43:20,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-25 23:43:20,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:43:20,895 INFO L321 Elim1Store]: treesize reduction 147, result has 22.2 percent of original size [2022-11-25 23:43:20,895 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 [2022-11-25 23:43:20,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:43:21,038 INFO L321 Elim1Store]: treesize reduction 128, result has 32.3 percent of original size [2022-11-25 23:43:21,038 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 [2022-11-25 23:43:21,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:43:21,204 INFO L321 Elim1Store]: treesize reduction 131, result has 34.8 percent of original size [2022-11-25 23:43:21,205 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 [2022-11-25 23:43:21,224 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 [2022-11-25 23:43:21,228 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 [2022-11-25 23:43:21,239 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 [2022-11-25 23:43:21,244 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 [2022-11-25 23:43:21,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:43:21,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:43:21,268 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 [2022-11-25 23:43:21,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:43:21,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:43:21,288 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 [2022-11-25 23:43:21,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:43:21,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:43:21,320 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 [2022-11-25 23:43:21,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:43:21,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:43:21,331 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 [2022-11-25 23:43:21,362 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 [2022-11-25 23:43:21,369 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 [2022-11-25 23:43:21,392 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 [2022-11-25 23:43:21,400 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 [2022-11-25 23:43:21,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:43:21,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:43:21,549 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 [2022-11-25 23:43:21,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:43:21,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:43:21,561 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 [2022-11-25 23:43:21,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:43:21,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:43:21,686 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 [2022-11-25 23:43:21,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:43:21,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:43:21,698 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 [2022-11-25 23:43:21,913 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 [2022-11-25 23:43:21,921 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 [2022-11-25 23:43:21,930 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 [2022-11-25 23:43:21,938 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 [2022-11-25 23:43:22,058 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 [2022-11-25 23:43:22,066 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 [2022-11-25 23:43:22,078 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 [2022-11-25 23:43:22,086 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 [2022-11-25 23:43:22,842 INFO L321 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-11-25 23:43:22,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 19 [2022-11-25 23:43:22,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:43:22,923 INFO L321 Elim1Store]: treesize reduction 132, result has 25.8 percent of original size [2022-11-25 23:43:22,924 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 [2022-11-25 23:43:22,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:43:23,042 INFO L321 Elim1Store]: treesize reduction 122, result has 31.5 percent of original size [2022-11-25 23:43:23,043 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 [2022-11-25 23:43:24,431 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_successful_malloc with input of size 27 for LOIs [2022-11-25 23:43:24,435 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_list_del with input of size 27 for LOIs [2022-11-25 23:43:24,455 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_is_in_set with input of size 41 for LOIs [2022-11-25 23:43:24,518 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_list_add with input of size 34 for LOIs [2022-11-25 23:43:24,557 INFO L197 IcfgInterpreter]: Interpreting procedure __ldv_list_add with input of size 42 for LOIs [2022-11-25 23:43:24,609 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:43:31,325 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 [2022-11-25 23:43:31,325 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:43:31,325 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:43:31,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 9, 8] total 35 [2022-11-25 23:43:31,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121866679] [2022-11-25 23:43:31,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:43:31,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-25 23:43:31,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:43:31,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-25 23:43:31,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=3300, Unknown=0, NotChecked=0, Total=3540 [2022-11-25 23:43:31,329 INFO L87 Difference]: Start difference. First operand 107 states and 131 transitions. Second operand has 35 states, 28 states have (on average 2.7857142857142856) 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) [2022-11-25 23:43:38,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:43:38,527 INFO L93 Difference]: Finished difference Result 302 states and 379 transitions. [2022-11-25 23:43:38,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-25 23:43:38,528 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 28 states have (on average 2.7857142857142856) 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 [2022-11-25 23:43:38,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:43:38,530 INFO L225 Difference]: With dead ends: 302 [2022-11-25 23:43:38,530 INFO L226 Difference]: Without dead ends: 202 [2022-11-25 23:43:38,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 91 SyntacticMatches, 5 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2874 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=911, Invalid=9595, Unknown=0, NotChecked=0, Total=10506 [2022-11-25 23:43:38,535 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 363 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 1516 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 1734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 1516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-25 23:43:38,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 505 Invalid, 1734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 1516 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-25 23:43:38,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-11-25 23:43:38,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 131. [2022-11-25 23:43:38,561 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) [2022-11-25 23:43:38,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 160 transitions. [2022-11-25 23:43:38,562 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 160 transitions. Word has length 41 [2022-11-25 23:43:38,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:43:38,562 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 160 transitions. [2022-11-25 23:43:38,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 28 states have (on average 2.7857142857142856) 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) [2022-11-25 23:43:38,563 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 160 transitions. [2022-11-25 23:43:38,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-25 23:43:38,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:43:38,564 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] [2022-11-25 23:43:38,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee4b6f4-6ab8-42e1-9f11-0740098186d0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 23:43:38,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee4b6f4-6ab8-42e1-9f11-0740098186d0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:43:38,767 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:43:38,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:43:38,767 INFO L85 PathProgramCache]: Analyzing trace with hash -21932279, now seen corresponding path program 1 times [2022-11-25 23:43:38,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:43:38,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826874569] [2022-11-25 23:43:38,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:43:38,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:43:38,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:43:38,983 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 23:43:39,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:43:39,104 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-25 23:43:39,104 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 23:43:39,105 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-11-25 23:43:39,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-11-25 23:43:39,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-11-25 23:43:39,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 23:43:39,144 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:43:39,151 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 23:43:39,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 11:43:39 BoogieIcfgContainer [2022-11-25 23:43:39,281 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 23:43:39,282 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 23:43:39,282 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 23:43:39,282 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 23:43:39,283 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:42:15" (3/4) ... [2022-11-25 23:43:39,285 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-25 23:43:39,408 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee4b6f4-6ab8-42e1-9f11-0740098186d0/bin/utaipan-ByfvJB40ur/witness.graphml [2022-11-25 23:43:39,408 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 23:43:39,409 INFO L158 Benchmark]: Toolchain (without parser) took 85244.76ms. Allocated memory was 148.9MB in the beginning and 461.4MB in the end (delta: 312.5MB). Free memory was 97.6MB in the beginning and 410.7MB in the end (delta: -313.1MB). Peak memory consumption was 1.1MB. Max. memory is 16.1GB. [2022-11-25 23:43:39,409 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 148.9MB. Free memory is still 102.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:43:39,409 INFO L158 Benchmark]: CACSL2BoogieTranslator took 615.79ms. Allocated memory is still 148.9MB. Free memory was 97.6MB in the beginning and 77.2MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-25 23:43:39,410 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.25ms. Allocated memory is still 148.9MB. Free memory was 77.2MB in the beginning and 74.5MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:43:39,410 INFO L158 Benchmark]: Boogie Preprocessor took 68.50ms. Allocated memory is still 148.9MB. Free memory was 74.5MB in the beginning and 72.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:43:39,410 INFO L158 Benchmark]: RCFGBuilder took 732.88ms. Allocated memory is still 148.9MB. Free memory was 72.1MB in the beginning and 101.2MB in the end (delta: -29.0MB). Peak memory consumption was 20.7MB. Max. memory is 16.1GB. [2022-11-25 23:43:39,411 INFO L158 Benchmark]: TraceAbstraction took 83624.66ms. Allocated memory was 148.9MB in the beginning and 461.4MB in the end (delta: 312.5MB). Free memory was 100.6MB in the beginning and 417.0MB in the end (delta: -316.4MB). Peak memory consumption was 236.2MB. Max. memory is 16.1GB. [2022-11-25 23:43:39,411 INFO L158 Benchmark]: Witness Printer took 126.61ms. Allocated memory is still 461.4MB. Free memory was 417.0MB in the beginning and 410.7MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-25 23:43:39,412 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 148.9MB. Free memory is still 102.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 615.79ms. Allocated memory is still 148.9MB. Free memory was 97.6MB in the beginning and 77.2MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.25ms. Allocated memory is still 148.9MB. Free memory was 77.2MB in the beginning and 74.5MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 68.50ms. Allocated memory is still 148.9MB. Free memory was 74.5MB in the beginning and 72.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 732.88ms. Allocated memory is still 148.9MB. Free memory was 72.1MB in the beginning and 101.2MB in the end (delta: -29.0MB). Peak memory consumption was 20.7MB. Max. memory is 16.1GB. * TraceAbstraction took 83624.66ms. Allocated memory was 148.9MB in the beginning and 461.4MB in the end (delta: 312.5MB). Free memory was 100.6MB in the beginning and 417.0MB in the end (delta: -316.4MB). Peak memory consumption was 236.2MB. Max. memory is 16.1GB. * Witness Printer took 126.61ms. Allocated memory is still 461.4MB. Free memory was 417.0MB in the beginning and 410.7MB in the end (delta: 6.3MB). 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))={-1:0}, 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={-1:0}, 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={-1:4}] [L612] EXPR head->next VAL [drvlist={4:0}, head={3:0}, head={3:0}, head->next={3:0}, mutexes={3:0}, new={-1:4}, new={-1:4}] [L612] CALL __ldv_list_add(new, head, head->next) VAL [drvlist={4:0}, mutexes={3:0}, new={-1:4}, 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={-1:4}, new={-1:4}] [L644] RET ldv_list_add(&le->list, s) VAL [drvlist={4:0}, le={-1:0}, 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: 83.4s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 18.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 20 mSolverCounterUnknown, 1268 SdHoareTripleChecker+Valid, 8.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1255 mSDsluCounter, 2309 SdHoareTripleChecker+Invalid, 8.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1958 mSDsCounter, 674 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4939 IncrementalHoareTripleChecker+Invalid, 5633 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 674 mSolverCounterUnsat, 351 mSDtfsCounter, 4939 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 538 GetRequests, 202 SyntacticMatches, 6 SemanticMatches, 330 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7862 ImplicationChecksByTransitivity, 43.3s 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: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 207 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 30.0s InterpolantComputationTime, 366 NumberOfCodeBlocks, 366 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 361 ConstructedInterpolants, 10 QuantifiedInterpolants, 15116 SizeOfPredicates, 94 NumberOfNonLiveVariables, 1470 ConjunctsInSsa, 406 ConjunctsInUnsatCore, 14 InterpolantComputations, 4 PerfectInterpolantSequences, 15/59 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! [2022-11-25 23:43:39,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eee4b6f4-6ab8-42e1-9f11-0740098186d0/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, 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