./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/list-simple/sll2n_append_unequal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/sll2n_append_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 742ffe63db70127807dbc7584eb0c51633a9ed1be5f19fa1a247e43392d52dab --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 11:11:20,961 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 11:11:20,962 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 11:11:20,979 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 11:11:20,979 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 11:11:20,980 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 11:11:20,981 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 11:11:20,983 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 11:11:20,984 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 11:11:20,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 11:11:20,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 11:11:20,987 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 11:11:20,987 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 11:11:20,988 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 11:11:20,989 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 11:11:20,990 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 11:11:20,991 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 11:11:20,992 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 11:11:20,993 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 11:11:20,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 11:11:20,996 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 11:11:20,997 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 11:11:20,998 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 11:11:20,999 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 11:11:21,002 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 11:11:21,003 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 11:11:21,003 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 11:11:21,004 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 11:11:21,004 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 11:11:21,005 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 11:11:21,006 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 11:11:21,006 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 11:11:21,007 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 11:11:21,007 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 11:11:21,008 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 11:11:21,009 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 11:11:21,009 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 11:11:21,009 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 11:11:21,010 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 11:11:21,010 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 11:11:21,011 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 11:11:21,012 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 11:11:21,032 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 11:11:21,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 11:11:21,033 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 11:11:21,033 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 11:11:21,033 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 11:11:21,034 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 11:11:21,034 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 11:11:21,034 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 11:11:21,034 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 11:11:21,034 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 11:11:21,034 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 11:11:21,035 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 11:11:21,035 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 11:11:21,035 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 11:11:21,035 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 11:11:21,035 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 11:11:21,035 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 11:11:21,036 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 11:11:21,036 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 11:11:21,036 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 11:11:21,037 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 11:11:21,037 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 11:11:21,037 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 11:11:21,037 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 11:11:21,037 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 11:11:21,037 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 11:11:21,037 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 11:11:21,038 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 11:11:21,038 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 11:11:21,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 11:11:21,038 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 11:11:21,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 11:11:21,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 11:11:21,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 11:11:21,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:11:21,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 11:11:21,039 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 11:11:21,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 11:11:21,039 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 11:11:21,039 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 11:11:21,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 11:11:21,040 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 11:11:21,040 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 11:11:21,040 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_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 742ffe63db70127807dbc7584eb0c51633a9ed1be5f19fa1a247e43392d52dab [2022-12-14 11:11:21,249 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 11:11:21,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 11:11:21,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 11:11:21,270 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 11:11:21,271 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 11:11:21,271 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/list-simple/sll2n_append_unequal.i [2022-12-14 11:11:23,836 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 11:11:23,997 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 11:11:23,998 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/sv-benchmarks/c/list-simple/sll2n_append_unequal.i [2022-12-14 11:11:24,011 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/data/8dcaadc85/96271f74cc3f4f64b4fe95bce381d917/FLAG1105499c9 [2022-12-14 11:11:24,022 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/data/8dcaadc85/96271f74cc3f4f64b4fe95bce381d917 [2022-12-14 11:11:24,024 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 11:11:24,025 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 11:11:24,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 11:11:24,026 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 11:11:24,029 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 11:11:24,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:11:24" (1/1) ... [2022-12-14 11:11:24,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8e64494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:11:24, skipping insertion in model container [2022-12-14 11:11:24,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:11:24" (1/1) ... [2022-12-14 11:11:24,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 11:11:24,065 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 11:11:24,264 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_f8f25c9b-53cc-4132-acb2-302a20579963/sv-benchmarks/c/list-simple/sll2n_append_unequal.i[24323,24336] [2022-12-14 11:11:24,264 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:11:24,271 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 11:11:24,302 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/sv-benchmarks/c/list-simple/sll2n_append_unequal.i[24323,24336] [2022-12-14 11:11:24,302 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:11:24,321 INFO L208 MainTranslator]: Completed translation [2022-12-14 11:11:24,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:11:24 WrapperNode [2022-12-14 11:11:24,321 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 11:11:24,322 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 11:11:24,322 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 11:11:24,322 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 11:11:24,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:11:24" (1/1) ... [2022-12-14 11:11:24,337 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:11:24" (1/1) ... [2022-12-14 11:11:24,353 INFO L138 Inliner]: procedures = 127, calls = 36, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 142 [2022-12-14 11:11:24,354 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 11:11:24,354 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 11:11:24,354 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 11:11:24,354 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 11:11:24,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:11:24" (1/1) ... [2022-12-14 11:11:24,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:11:24" (1/1) ... [2022-12-14 11:11:24,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:11:24" (1/1) ... [2022-12-14 11:11:24,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:11:24" (1/1) ... [2022-12-14 11:11:24,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:11:24" (1/1) ... [2022-12-14 11:11:24,372 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:11:24" (1/1) ... [2022-12-14 11:11:24,373 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:11:24" (1/1) ... [2022-12-14 11:11:24,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:11:24" (1/1) ... [2022-12-14 11:11:24,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 11:11:24,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 11:11:24,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 11:11:24,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 11:11:24,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:11:24" (1/1) ... [2022-12-14 11:11:24,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:11:24,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:11:24,403 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 11:11:24,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 11:11:24,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 11:11:24,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 11:11:24,441 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2022-12-14 11:11:24,441 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2022-12-14 11:11:24,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 11:11:24,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 11:11:24,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 11:11:24,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 11:11:24,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 11:11:24,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 11:11:24,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 11:11:24,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 11:11:24,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 11:11:24,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 11:11:24,534 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 11:11:24,536 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 11:11:24,697 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 11:11:24,741 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 11:11:24,741 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-14 11:11:24,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:11:24 BoogieIcfgContainer [2022-12-14 11:11:24,743 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 11:11:24,745 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 11:11:24,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 11:11:24,748 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 11:11:24,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:11:24" (1/3) ... [2022-12-14 11:11:24,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@702f9661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:11:24, skipping insertion in model container [2022-12-14 11:11:24,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:11:24" (2/3) ... [2022-12-14 11:11:24,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@702f9661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:11:24, skipping insertion in model container [2022-12-14 11:11:24,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:11:24" (3/3) ... [2022-12-14 11:11:24,750 INFO L112 eAbstractionObserver]: Analyzing ICFG sll2n_append_unequal.i [2022-12-14 11:11:24,764 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 11:11:24,764 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-12-14 11:11:24,807 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:11:24,812 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;@23086699, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:11:24,812 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-12-14 11:11:24,815 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 38 states have internal predecessors, (50), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 11:11:24,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 11:11:24,821 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:11:24,821 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:11:24,822 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:11:24,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:11:24,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1068064485, now seen corresponding path program 1 times [2022-12-14 11:11:24,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:11:24,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141515129] [2022-12-14 11:11:24,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:11:24,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:11:24,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:11:25,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:11:25,081 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:11:25,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141515129] [2022-12-14 11:11:25,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141515129] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:11:25,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:11:25,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:11:25,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136842957] [2022-12-14 11:11:25,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:11:25,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:11:25,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:11:25,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:11:25,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:11:25,112 INFO L87 Difference]: Start difference. First operand has 42 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 38 states have internal predecessors, (50), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 11:11:25,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:11:25,178 INFO L93 Difference]: Finished difference Result 83 states and 107 transitions. [2022-12-14 11:11:25,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 11:11:25,180 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 8 [2022-12-14 11:11:25,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:11:25,187 INFO L225 Difference]: With dead ends: 83 [2022-12-14 11:11:25,187 INFO L226 Difference]: Without dead ends: 41 [2022-12-14 11:11:25,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:11:25,193 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 3 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:11:25,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 127 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:11:25,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-12-14 11:11:25,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-12-14 11:11:25,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 36 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 11:11:25,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2022-12-14 11:11:25,228 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 8 [2022-12-14 11:11:25,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:11:25,229 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2022-12-14 11:11:25,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 11:11:25,230 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2022-12-14 11:11:25,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 11:11:25,231 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:11:25,232 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-12-14 11:11:25,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 11:11:25,232 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:11:25,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:11:25,233 INFO L85 PathProgramCache]: Analyzing trace with hash 365455162, now seen corresponding path program 1 times [2022-12-14 11:11:25,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:11:25,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808410739] [2022-12-14 11:11:25,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:11:25,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:11:25,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:11:25,316 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 11:11:25,316 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:11:25,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808410739] [2022-12-14 11:11:25,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808410739] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:11:25,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:11:25,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:11:25,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762196221] [2022-12-14 11:11:25,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:11:25,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:11:25,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:11:25,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:11:25,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:11:25,319 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 11:11:25,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:11:25,348 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2022-12-14 11:11:25,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 11:11:25,349 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2022-12-14 11:11:25,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:11:25,349 INFO L225 Difference]: With dead ends: 41 [2022-12-14 11:11:25,349 INFO L226 Difference]: Without dead ends: 40 [2022-12-14 11:11:25,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:11:25,351 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 5 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:11:25,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 95 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:11:25,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-12-14 11:11:25,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-12-14 11:11:25,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 35 states have internal predecessors, (40), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 11:11:25,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2022-12-14 11:11:25,355 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 16 [2022-12-14 11:11:25,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:11:25,355 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2022-12-14 11:11:25,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 11:11:25,355 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2022-12-14 11:11:25,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 11:11:25,356 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:11:25,356 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2022-12-14 11:11:25,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 11:11:25,356 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:11:25,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:11:25,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1555791818, now seen corresponding path program 1 times [2022-12-14 11:11:25,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:11:25,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136415146] [2022-12-14 11:11:25,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:11:25,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:11:25,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:11:25,484 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 11:11:25,484 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:11:25,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136415146] [2022-12-14 11:11:25,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136415146] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:11:25,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045460364] [2022-12-14 11:11:25,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:11:25,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:11:25,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:11:25,486 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:11:25,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 11:11:25,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:11:25,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 11:11:25,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:11:25,636 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 11:11:25,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:11:25,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045460364] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:11:25,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 11:11:25,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-12-14 11:11:25,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831082227] [2022-12-14 11:11:25,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:11:25,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 11:11:25,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:11:25,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 11:11:25,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-14 11:11:25,638 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 11:11:25,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:11:25,685 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2022-12-14 11:11:25,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 11:11:25,686 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2022-12-14 11:11:25,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:11:25,686 INFO L225 Difference]: With dead ends: 40 [2022-12-14 11:11:25,686 INFO L226 Difference]: Without dead ends: 39 [2022-12-14 11:11:25,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-12-14 11:11:25,688 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 60 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:11:25,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 72 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:11:25,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-12-14 11:11:25,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2022-12-14 11:11:25,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 31 states have internal predecessors, (36), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 11:11:25,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2022-12-14 11:11:25,693 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 17 [2022-12-14 11:11:25,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:11:25,693 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2022-12-14 11:11:25,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 11:11:25,693 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2022-12-14 11:11:25,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 11:11:25,694 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:11:25,694 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:11:25,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 11:11:25,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:11:25,895 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:11:25,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:11:25,896 INFO L85 PathProgramCache]: Analyzing trace with hash 985112800, now seen corresponding path program 1 times [2022-12-14 11:11:25,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:11:25,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568656679] [2022-12-14 11:11:25,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:11:25,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:11:25,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:11:26,056 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 11:11:26,056 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:11:26,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568656679] [2022-12-14 11:11:26,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568656679] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:11:26,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396280391] [2022-12-14 11:11:26,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:11:26,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:11:26,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:11:26,058 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:11:26,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 11:11:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:11:26,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 11:11:26,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:11:26,174 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 11:11:26,174 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:11:26,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396280391] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:11:26,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 11:11:26,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-12-14 11:11:26,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406196739] [2022-12-14 11:11:26,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:11:26,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:11:26,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:11:26,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:11:26,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 11:11:26,176 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 11:11:26,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:11:26,192 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2022-12-14 11:11:26,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:11:26,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-12-14 11:11:26,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:11:26,193 INFO L225 Difference]: With dead ends: 35 [2022-12-14 11:11:26,193 INFO L226 Difference]: Without dead ends: 34 [2022-12-14 11:11:26,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 11:11:26,194 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 22 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:11:26,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 35 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:11:26,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-12-14 11:11:26,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-12-14 11:11:26,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 30 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 11:11:26,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2022-12-14 11:11:26,200 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 19 [2022-12-14 11:11:26,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:11:26,200 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2022-12-14 11:11:26,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 11:11:26,201 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2022-12-14 11:11:26,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 11:11:26,201 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:11:26,201 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:11:26,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 11:11:26,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:11:26,403 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:11:26,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:11:26,403 INFO L85 PathProgramCache]: Analyzing trace with hash 473725847, now seen corresponding path program 1 times [2022-12-14 11:11:26,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:11:26,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476117830] [2022-12-14 11:11:26,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:11:26,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:11:26,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:11:26,480 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 11:11:26,480 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:11:26,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476117830] [2022-12-14 11:11:26,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476117830] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:11:26,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168115686] [2022-12-14 11:11:26,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:11:26,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:11:26,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:11:26,482 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:11:26,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 11:11:26,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:11:26,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 11:11:26,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:11:26,592 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 11:11:26,593 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:11:26,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168115686] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:11:26,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 11:11:26,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-12-14 11:11:26,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861108588] [2022-12-14 11:11:26,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:11:26,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:11:26,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:11:26,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:11:26,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 11:11:26,595 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 11:11:26,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:11:26,608 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2022-12-14 11:11:26,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:11:26,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2022-12-14 11:11:26,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:11:26,609 INFO L225 Difference]: With dead ends: 34 [2022-12-14 11:11:26,609 INFO L226 Difference]: Without dead ends: 31 [2022-12-14 11:11:26,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 11:11:26,610 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:11:26,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 35 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:11:26,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-12-14 11:11:26,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-12-14 11:11:26,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 27 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 11:11:26,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2022-12-14 11:11:26,615 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 20 [2022-12-14 11:11:26,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:11:26,615 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2022-12-14 11:11:26,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 11:11:26,616 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2022-12-14 11:11:26,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-14 11:11:26,616 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:11:26,616 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] [2022-12-14 11:11:26,622 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 11:11:26,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:11:26,818 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:11:26,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:11:26,819 INFO L85 PathProgramCache]: Analyzing trace with hash -48372262, now seen corresponding path program 1 times [2022-12-14 11:11:26,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:11:26,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735079604] [2022-12-14 11:11:26,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:11:26,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:11:26,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:11:27,011 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 11:11:27,011 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:11:27,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735079604] [2022-12-14 11:11:27,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735079604] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:11:27,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047975281] [2022-12-14 11:11:27,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:11:27,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:11:27,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:11:27,013 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:11:27,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 11:11:27,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:11:27,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 11:11:27,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:11:27,128 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:11:27,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:11:27,160 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 11:11:27,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047975281] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:11:27,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [729503342] [2022-12-14 11:11:27,174 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-12-14 11:11:27,174 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:11:27,177 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:11:27,181 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:11:27,182 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:11:27,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:27,259 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:11:27,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 11:11:27,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:27,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 11:11:27,329 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 6 treesize of output 5 [2022-12-14 11:11:27,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 11:11:27,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:27,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 11:11:27,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:27,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 11:11:27,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:27,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:11:27,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:27,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 11:11:27,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:27,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:11:27,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:27,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:11:27,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:27,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 11:11:27,543 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:27,544 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:11:27,555 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:27,556 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:11:27,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:27,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 11:11:27,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:11:27,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:11:27,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-12-14 11:11:27,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:11:27,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:11:27,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-12-14 11:11:27,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:11:27,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:11:27,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:11:27,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:11:27,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:27,870 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 220 treesize of output 200 [2022-12-14 11:11:27,883 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:27,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 214 treesize of output 202 [2022-12-14 11:11:27,899 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:27,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 218 treesize of output 206 [2022-12-14 11:11:28,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:11:28,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:11:28,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:11:28,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:11:28,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-12-14 11:11:28,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:11:28,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:11:28,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:11:28,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-12-14 11:11:28,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:11:28,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:28,197 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 220 treesize of output 200 [2022-12-14 11:11:28,207 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:28,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 214 treesize of output 202 [2022-12-14 11:11:28,218 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:28,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 218 treesize of output 206 [2022-12-14 11:11:28,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:11:28,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:11:28,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:11:28,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:11:28,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 11:11:28,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 11:11:28,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 11:11:28,784 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 22 for LOIs [2022-12-14 11:11:28,794 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 6 treesize of output 5 [2022-12-14 11:11:28,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 11:11:28,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:28,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 11:11:28,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:28,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:11:28,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:28,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 11:11:28,833 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:11:30,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [729503342] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:11:30,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:11:30,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [5, 5, 5] total 23 [2022-12-14 11:11:30,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74563160] [2022-12-14 11:11:30,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:11:30,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-14 11:11:30,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:11:30,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-14 11:11:30,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2022-12-14 11:11:30,884 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 18 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 11:11:31,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:11:31,349 INFO L93 Difference]: Finished difference Result 59 states and 63 transitions. [2022-12-14 11:11:31,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-14 11:11:31,350 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2022-12-14 11:11:31,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:11:31,351 INFO L225 Difference]: With dead ends: 59 [2022-12-14 11:11:31,351 INFO L226 Difference]: Without dead ends: 51 [2022-12-14 11:11:31,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 43 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2022-12-14 11:11:31,352 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 35 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 11:11:31,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 227 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 11:11:31,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-12-14 11:11:31,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 38. [2022-12-14 11:11:31,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 34 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 11:11:31,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2022-12-14 11:11:31,359 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 22 [2022-12-14 11:11:31,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:11:31,360 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2022-12-14 11:11:31,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 11:11:31,360 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2022-12-14 11:11:31,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-14 11:11:31,360 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:11:31,360 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] [2022-12-14 11:11:31,364 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 11:11:31,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 11:11:31,561 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:11:31,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:11:31,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1697610656, now seen corresponding path program 1 times [2022-12-14 11:11:31,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:11:31,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062375021] [2022-12-14 11:11:31,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:11:31,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:11:31,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:11:31,658 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 11:11:31,659 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:11:31,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062375021] [2022-12-14 11:11:31,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062375021] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:11:31,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379152877] [2022-12-14 11:11:31,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:11:31,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:11:31,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:11:31,660 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:11:31,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 11:11:31,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:11:31,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 11:11:31,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:11:31,763 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:11:31,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:11:31,782 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 11:11:31,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379152877] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:11:31,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1088303095] [2022-12-14 11:11:31,784 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2022-12-14 11:11:31,784 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:11:31,784 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:11:31,784 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:11:31,785 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:11:31,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:31,808 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 11:11:31,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 17 treesize of output 26 [2022-12-14 11:11:31,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:31,826 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:11:31,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 11:11:31,854 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 6 treesize of output 5 [2022-12-14 11:11:31,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 11:11:31,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:31,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 11:11:31,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:31,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 11:11:31,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:31,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:11:31,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:31,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:11:31,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:31,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 11:11:31,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:31,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:11:31,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:31,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 11:11:31,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:31,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 11:11:32,000 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:32,001 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:11:32,013 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:32,014 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:11:32,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:11:32,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-12-14 11:11:32,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:11:32,078 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 [2022-12-14 11:11:32,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:11:32,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:11:32,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:11:32,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:11:32,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-12-14 11:11:32,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:11:32,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:11:32,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:11:32,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:11:32,278 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 57 treesize of output 51 [2022-12-14 11:11:32,285 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 70 treesize of output 52 [2022-12-14 11:11:32,363 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 76 treesize of output 58 [2022-12-14 11:11:32,370 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 51 treesize of output 45 [2022-12-14 11:11:32,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:11:32,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:11:32,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:11:32,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:11:32,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:11:32,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:11:32,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:11:32,665 INFO L321 Elim1Store]: treesize reduction 43, result has 14.0 percent of original size [2022-12-14 11:11:32,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 47 treesize of output 36 [2022-12-14 11:11:32,680 INFO L321 Elim1Store]: treesize reduction 43, result has 14.0 percent of original size [2022-12-14 11:11:32,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 47 treesize of output 36 [2022-12-14 11:11:32,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:11:32,770 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 49 for LOIs [2022-12-14 11:11:32,841 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:11:35,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1088303095] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:11:35,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:11:35,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [5, 5, 5] total 27 [2022-12-14 11:11:35,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579462438] [2022-12-14 11:11:35,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:11:35,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-14 11:11:35,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:11:35,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-14 11:11:35,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=617, Unknown=0, NotChecked=0, Total=702 [2022-12-14 11:11:35,486 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 22 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 11:11:36,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:11:36,423 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2022-12-14 11:11:36,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-14 11:11:36,424 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2022-12-14 11:11:36,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:11:36,425 INFO L225 Difference]: With dead ends: 69 [2022-12-14 11:11:36,425 INFO L226 Difference]: Without dead ends: 61 [2022-12-14 11:11:36,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=96, Invalid=716, Unknown=0, NotChecked=0, Total=812 [2022-12-14 11:11:36,426 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 38 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 11:11:36,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 268 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 11:11:36,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-12-14 11:11:36,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 41. [2022-12-14 11:11:36,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 37 states have internal predecessors, (42), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 11:11:36,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2022-12-14 11:11:36,432 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 25 [2022-12-14 11:11:36,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:11:36,432 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2022-12-14 11:11:36,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 11:11:36,432 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2022-12-14 11:11:36,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-14 11:11:36,433 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:11:36,433 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:11:36,438 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 11:11:36,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:11:36,635 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:11:36,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:11:36,636 INFO L85 PathProgramCache]: Analyzing trace with hash -328938864, now seen corresponding path program 1 times [2022-12-14 11:11:36,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:11:36,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677117874] [2022-12-14 11:11:36,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:11:36,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:11:36,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:11:36,722 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-14 11:11:36,723 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:11:36,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677117874] [2022-12-14 11:11:36,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677117874] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:11:36,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395602566] [2022-12-14 11:11:36,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:11:36,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:11:36,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:11:36,724 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:11:36,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 11:11:36,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:11:36,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 11:11:36,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:11:36,830 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 11:11:36,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:11:36,850 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-14 11:11:36,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395602566] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:11:36,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1525819602] [2022-12-14 11:11:36,852 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2022-12-14 11:11:36,852 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:11:36,853 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:11:36,853 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:11:36,853 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:11:36,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:36,875 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:11:36,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 11:11:36,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:36,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 11:11:36,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 11:11:36,912 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 6 treesize of output 5 [2022-12-14 11:11:36,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:36,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:11:36,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:36,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 11:11:36,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:36,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 11:11:36,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:36,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:11:36,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:36,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 11:11:36,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:36,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 11:11:36,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:37,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:11:37,053 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:37,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:37,054 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 203 treesize of output 183 [2022-12-14 11:11:37,062 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:37,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 197 treesize of output 183 [2022-12-14 11:11:37,071 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:37,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 199 treesize of output 96 [2022-12-14 11:11:37,114 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 [2022-12-14 11:11:37,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:11:37,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-12-14 11:11:37,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:11:37,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:11:37,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:11:37,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:11:37,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:11:37,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-12-14 11:11:37,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:11:37,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:11:37,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:11:37,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:11:37,348 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 57 treesize of output 51 [2022-12-14 11:11:37,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 52 [2022-12-14 11:11:37,443 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 76 treesize of output 58 [2022-12-14 11:11:37,449 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 51 treesize of output 45 [2022-12-14 11:11:37,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:11:37,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:11:37,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:11:37,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:11:37,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:11:37,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:11:37,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:11:37,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 11:11:37,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 11:11:37,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 11:11:38,074 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 49 for LOIs [2022-12-14 11:11:38,136 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:11:39,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1525819602] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:11:39,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:11:39,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [5, 5, 5] total 24 [2022-12-14 11:11:39,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735593112] [2022-12-14 11:11:39,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:11:39,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-14 11:11:39,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:11:39,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-14 11:11:39,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2022-12-14 11:11:39,997 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 19 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 11:11:40,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:11:40,954 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2022-12-14 11:11:40,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-14 11:11:40,954 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2022-12-14 11:11:40,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:11:40,955 INFO L225 Difference]: With dead ends: 61 [2022-12-14 11:11:40,955 INFO L226 Difference]: Without dead ends: 60 [2022-12-14 11:11:40,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 57 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2022-12-14 11:11:40,956 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 53 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 11:11:40,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 120 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 11:11:40,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-12-14 11:11:40,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2022-12-14 11:11:40,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 46 states have (on average 1.2173913043478262) internal successors, (56), 49 states have internal predecessors, (56), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 11:11:40,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2022-12-14 11:11:40,963 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 27 [2022-12-14 11:11:40,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:11:40,963 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2022-12-14 11:11:40,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 11:11:40,963 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2022-12-14 11:11:40,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-14 11:11:40,964 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:11:40,964 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] [2022-12-14 11:11:40,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 11:11:41,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:11:41,166 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:11:41,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:11:41,167 INFO L85 PathProgramCache]: Analyzing trace with hash 866727291, now seen corresponding path program 1 times [2022-12-14 11:11:41,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:11:41,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374637577] [2022-12-14 11:11:41,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:11:41,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:11:41,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:11:41,226 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 11:11:41,226 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:11:41,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374637577] [2022-12-14 11:11:41,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374637577] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:11:41,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181031839] [2022-12-14 11:11:41,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:11:41,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:11:41,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:11:41,228 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:11:41,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 11:11:41,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:11:41,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 11:11:41,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:11:41,335 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 11:11:41,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:11:41,351 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 11:11:41,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181031839] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:11:41,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1958415076] [2022-12-14 11:11:41,352 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2022-12-14 11:11:41,353 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:11:41,353 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:11:41,353 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:11:41,353 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:11:41,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:41,374 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:11:41,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 11:11:41,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:41,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 11:11:41,407 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 6 treesize of output 5 [2022-12-14 11:11:41,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 11:11:41,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:41,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:11:41,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:41,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 11:11:41,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:41,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 11:11:41,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:41,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:11:41,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:41,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 11:11:41,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:41,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 11:11:41,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:41,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:11:41,499 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:41,499 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:11:41,504 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:41,505 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:11:41,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:41,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 11:11:41,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:11:41,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-12-14 11:11:41,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:11:41,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:11:41,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:11:41,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:11:41,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:11:41,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:11:41,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-12-14 11:11:41,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:11:41,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:11:41,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:11:41,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:11:41,707 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 19 treesize of output 7 [2022-12-14 11:11:41,728 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 19 treesize of output 7 [2022-12-14 11:11:41,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:11:41,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:11:41,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:11:42,022 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:11:42,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 141 treesize of output 152 [2022-12-14 11:11:42,049 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:11:42,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 135 treesize of output 152 [2022-12-14 11:11:42,059 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 127 treesize of output 119 [2022-12-14 11:11:42,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:42,070 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:11:42,070 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 127 treesize of output 111 [2022-12-14 11:11:42,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:11:42,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:11:42,405 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:11:42,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 141 treesize of output 158 [2022-12-14 11:11:42,429 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:11:42,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 133 treesize of output 144 [2022-12-14 11:11:42,442 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 127 treesize of output 119 [2022-12-14 11:11:42,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:42,460 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:11:42,460 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 127 treesize of output 111 [2022-12-14 11:11:42,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-12-14 11:11:42,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-12-14 11:11:42,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:11:43,014 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 21 for LOIs [2022-12-14 11:11:43,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 11:11:43,028 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 6 treesize of output 5 [2022-12-14 11:11:43,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:43,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:11:43,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:43,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 11:11:43,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:43,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 11:11:43,058 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:11:45,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1958415076] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:11:45,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:11:45,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [5, 5, 5] total 27 [2022-12-14 11:11:45,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396415806] [2022-12-14 11:11:45,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:11:45,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-14 11:11:45,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:11:45,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-14 11:11:45,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-12-14 11:11:45,582 INFO L87 Difference]: Start difference. First operand 53 states and 60 transitions. Second operand has 22 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 11:11:46,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:11:46,066 INFO L93 Difference]: Finished difference Result 73 states and 78 transitions. [2022-12-14 11:11:46,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-14 11:11:46,067 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2022-12-14 11:11:46,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:11:46,068 INFO L225 Difference]: With dead ends: 73 [2022-12-14 11:11:46,068 INFO L226 Difference]: Without dead ends: 65 [2022-12-14 11:11:46,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 55 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-12-14 11:11:46,069 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 31 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 11:11:46,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 249 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 11:11:46,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-12-14 11:11:46,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 48. [2022-12-14 11:11:46,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 44 states have internal predecessors, (50), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 11:11:46,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2022-12-14 11:11:46,077 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 27 [2022-12-14 11:11:46,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:11:46,077 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2022-12-14 11:11:46,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 11:11:46,077 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2022-12-14 11:11:46,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-14 11:11:46,077 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:11:46,078 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] [2022-12-14 11:11:46,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 11:11:46,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:11:46,279 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:11:46,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:11:46,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1607221635, now seen corresponding path program 1 times [2022-12-14 11:11:46,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:11:46,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278226804] [2022-12-14 11:11:46,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:11:46,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:11:46,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:11:46,361 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 11:11:46,361 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:11:46,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278226804] [2022-12-14 11:11:46,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278226804] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:11:46,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415472389] [2022-12-14 11:11:46,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:11:46,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:11:46,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:11:46,362 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:11:46,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 11:11:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:11:46,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 11:11:46,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:11:46,474 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 11:11:46,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:11:46,491 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 11:11:46,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415472389] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:11:46,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [65416228] [2022-12-14 11:11:46,494 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2022-12-14 11:11:46,495 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:11:46,495 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:11:46,495 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:11:46,495 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:11:46,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:46,517 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:11:46,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 11:11:46,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:46,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 11:11:46,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 11:11:46,544 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 6 treesize of output 5 [2022-12-14 11:11:46,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:46,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 11:11:46,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:46,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 11:11:46,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:46,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:11:46,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:46,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:11:46,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:46,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 11:11:46,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:46,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:11:46,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:46,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 11:11:46,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:46,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 11:11:46,646 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:46,646 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:11:46,654 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:46,654 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:11:46,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:11:46,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:11:46,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-12-14 11:11:46,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:11:46,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:11:46,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:11:46,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-12-14 11:11:46,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:11:46,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:11:46,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:11:46,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:46,801 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 220 treesize of output 200 [2022-12-14 11:11:46,810 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:46,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 214 treesize of output 202 [2022-12-14 11:11:46,818 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:46,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 218 treesize of output 206 [2022-12-14 11:11:46,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:11:46,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:11:46,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:11:46,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:11:46,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-12-14 11:11:46,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:11:46,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-12-14 11:11:46,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:11:46,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:11:46,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:11:47,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:47,021 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 220 treesize of output 200 [2022-12-14 11:11:47,032 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:47,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 214 treesize of output 202 [2022-12-14 11:11:47,042 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:47,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 218 treesize of output 206 [2022-12-14 11:11:47,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:11:47,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:11:47,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:11:47,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:11:47,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 11:11:47,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 11:11:47,268 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 11:11:47,530 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 21 for LOIs [2022-12-14 11:11:47,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 11:11:47,540 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 6 treesize of output 5 [2022-12-14 11:11:47,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:47,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:11:47,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:47,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 11:11:47,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:47,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 11:11:47,568 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:11:49,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [65416228] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:11:49,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:11:49,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [5, 5, 5] total 25 [2022-12-14 11:11:49,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051593539] [2022-12-14 11:11:49,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:11:49,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-14 11:11:49,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:11:49,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-14 11:11:49,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2022-12-14 11:11:49,922 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand has 20 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 11:11:51,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:11:51,121 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2022-12-14 11:11:51,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-14 11:11:51,122 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2022-12-14 11:11:51,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:11:51,122 INFO L225 Difference]: With dead ends: 55 [2022-12-14 11:11:51,122 INFO L226 Difference]: Without dead ends: 54 [2022-12-14 11:11:51,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 58 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=118, Invalid=752, Unknown=0, NotChecked=0, Total=870 [2022-12-14 11:11:51,123 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 48 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 11:11:51,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 112 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 11:11:51,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-12-14 11:11:51,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2022-12-14 11:11:51,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 44 states have (on average 1.2045454545454546) internal successors, (53), 47 states have internal predecessors, (53), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 11:11:51,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2022-12-14 11:11:51,131 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 28 [2022-12-14 11:11:51,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:11:51,131 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2022-12-14 11:11:51,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 11:11:51,131 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2022-12-14 11:11:51,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-14 11:11:51,131 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:11:51,131 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:11:51,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 11:11:51,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 11:11:51,333 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:11:51,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:11:51,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1607170093, now seen corresponding path program 1 times [2022-12-14 11:11:51,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:11:51,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871503920] [2022-12-14 11:11:51,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:11:51,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:11:51,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:11:51,420 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 11:11:51,420 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:11:51,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871503920] [2022-12-14 11:11:51,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871503920] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:11:51,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55808001] [2022-12-14 11:11:51,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:11:51,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:11:51,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:11:51,422 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:11:51,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 11:11:51,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:11:51,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 11:11:51,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:11:51,527 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 11:11:51,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:11:51,544 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 11:11:51,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55808001] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:11:51,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1438675547] [2022-12-14 11:11:51,546 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2022-12-14 11:11:51,546 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:11:51,546 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:11:51,547 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:11:51,547 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:11:51,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:51,570 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:11:51,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 11:11:51,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:51,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 11:11:51,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 11:11:51,596 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 6 treesize of output 5 [2022-12-14 11:11:51,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:51,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:11:51,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:51,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 11:11:51,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:51,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 11:11:51,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:51,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 11:11:51,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:51,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:11:51,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:51,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 11:11:51,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:51,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:11:51,695 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:51,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:51,697 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 203 treesize of output 183 [2022-12-14 11:11:51,704 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:51,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 197 treesize of output 183 [2022-12-14 11:11:51,711 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:51,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 199 treesize of output 96 [2022-12-14 11:11:51,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:11:51,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-12-14 11:11:51,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:11:51,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:11:51,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:11:51,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:11:51,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:11:51,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:11:51,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:11:51,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-12-14 11:11:51,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:11:51,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:11:51,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:11:51,954 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 57 treesize of output 51 [2022-12-14 11:11:51,959 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 70 treesize of output 52 [2022-12-14 11:11:52,008 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 57 treesize of output 51 [2022-12-14 11:11:52,014 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 70 treesize of output 52 [2022-12-14 11:11:52,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:11:52,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:11:52,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:11:52,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:11:52,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:11:52,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:11:52,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:11:52,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 11:11:52,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 11:11:52,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 11:11:52,633 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 49 for LOIs [2022-12-14 11:11:52,690 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:11:54,782 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2454#(and (<= 5 |ULTIMATE.start_sll_append_~data#1|) (<= |ULTIMATE.start_sll_append_#in~data#1| 5) (<= 0 |ULTIMATE.start_sll_append_~head#1.offset|) (<= 1 |ULTIMATE.start_sll_create_#in~data#1|) (= |ULTIMATE.start_main_~uneq~0#1| 5) (<= |ULTIMATE.start_sll_create_#in~data#1| 1) (<= 0 |ULTIMATE.start_sll_append_~head#1.base|) (<= |ULTIMATE.start_sll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_sll_append_#in~head#1.offset|) (= |ULTIMATE.start_main_~count~0#1| |ULTIMATE.start_main_#t~post17#1|) (< 2147483646 |ULTIMATE.start_main_#t~post17#1|) (<= |ULTIMATE.start_sll_create_~len#1| 0) (<= |ULTIMATE.start_sll_create_#res#1.offset| 0) (<= 1 |ULTIMATE.start_sll_create_~data#1|) (<= 5 |ULTIMATE.start_sll_append_#in~data#1|) (<= |ULTIMATE.start_sll_append_~data#1| 5) (<= 0 |ULTIMATE.start_sll_append_#in~head#1.base|) (exists ((|v_ULTIMATE.start_main_~ptr~0#1.base_36| Int) (|v_ULTIMATE.start_main_~ptr~0#1.offset_36| Int)) (and (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~ptr~0#1.base_36|) (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_36| 4)) |ULTIMATE.start_main_~temp~2#1.base|) (= |ULTIMATE.start_main_~data~0#1| (select (select |#memory_int| |v_ULTIMATE.start_main_~ptr~0#1.base_36|) |v_ULTIMATE.start_main_~ptr~0#1.offset_36|)) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~ptr~0#1.base_36|) (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_36| 4)) |ULTIMATE.start_main_~temp~2#1.offset|))) (<= |ULTIMATE.start_sll_append_#in~head#1.offset| 0) (= |ULTIMATE.start_main_~ptr~0#1.base| |ULTIMATE.start_main_~temp~2#1.base|) (= |ULTIMATE.start_main_~ptr~0#1.offset| |ULTIMATE.start_main_~temp~2#1.offset|) (= |ULTIMATE.start_main_~data~0#1| 1) (<= |ULTIMATE.start_sll_create_~data#1| 1) (<= |ULTIMATE.start_sll_create_#in~len#1| 2) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (= |ULTIMATE.start_sll_append_~new_last~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_sll_create_~len#1| 2147483648)) (<= |ULTIMATE.start_sll_append_~head#1.offset| 0) (<= 0 |ULTIMATE.start_sll_create_#res#1.offset|) (<= 0 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_sll_create_#in~len#1|) (<= 0 |ULTIMATE.start_sll_create_~head~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-12-14 11:11:54,782 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:11:54,782 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:11:54,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-12-14 11:11:54,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010527072] [2022-12-14 11:11:54,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:11:54,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 11:11:54,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:11:54,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 11:11:54,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2022-12-14 11:11:54,783 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-14 11:11:54,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:11:54,820 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2022-12-14 11:11:54,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 11:11:54,820 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 28 [2022-12-14 11:11:54,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:11:54,821 INFO L225 Difference]: With dead ends: 100 [2022-12-14 11:11:54,821 INFO L226 Difference]: Without dead ends: 56 [2022-12-14 11:11:54,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 59 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=79, Invalid=571, Unknown=0, NotChecked=0, Total=650 [2022-12-14 11:11:54,822 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 5 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:11:54,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 136 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:11:54,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-12-14 11:11:54,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-12-14 11:11:54,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 48 states have (on average 1.1875) internal successors, (57), 51 states have internal predecessors, (57), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 11:11:54,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2022-12-14 11:11:54,833 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 28 [2022-12-14 11:11:54,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:11:54,833 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2022-12-14 11:11:54,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-14 11:11:54,833 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2022-12-14 11:11:54,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 11:11:54,833 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:11:54,833 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:11:54,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 11:11:55,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-14 11:11:55,034 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:11:55,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:11:55,034 INFO L85 PathProgramCache]: Analyzing trace with hash 659100584, now seen corresponding path program 2 times [2022-12-14 11:11:55,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:11:55,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164642530] [2022-12-14 11:11:55,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:11:55,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:11:55,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:11:55,095 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 11:11:55,096 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:11:55,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164642530] [2022-12-14 11:11:55,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164642530] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:11:55,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144625337] [2022-12-14 11:11:55,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 11:11:55,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:11:55,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:11:55,097 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:11:55,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 11:11:55,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-14 11:11:55,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:11:55,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 51 conjunts are in the unsatisfiable core [2022-12-14 11:11:55,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:11:55,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:55,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:11:55,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:55,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:11:55,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:55,307 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-12-14 11:11:55,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:55,312 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-14 11:11:55,333 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:55,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:55,335 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:11:55,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 38 [2022-12-14 11:11:55,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:55,341 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-12-14 11:11:55,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 18 [2022-12-14 11:11:55,354 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-14 11:11:55,354 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:11:55,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144625337] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:11:55,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 11:11:55,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 14 [2022-12-14 11:11:55,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417683375] [2022-12-14 11:11:55,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:11:55,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 11:11:55,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:11:55,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 11:11:55,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-12-14 11:11:55,355 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand has 10 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 11:11:55,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:11:55,520 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2022-12-14 11:11:55,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 11:11:55,520 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2022-12-14 11:11:55,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:11:55,521 INFO L225 Difference]: With dead ends: 59 [2022-12-14 11:11:55,521 INFO L226 Difference]: Without dead ends: 41 [2022-12-14 11:11:55,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-12-14 11:11:55,521 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 30 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:11:55,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 134 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:11:55,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-12-14 11:11:55,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-12-14 11:11:55,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 36 states have internal predecessors, (39), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 11:11:55,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2022-12-14 11:11:55,528 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 36 [2022-12-14 11:11:55,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:11:55,529 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2022-12-14 11:11:55,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 11:11:55,529 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2022-12-14 11:11:55,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-12-14 11:11:55,529 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:11:55,529 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:11:55,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 11:11:55,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:11:55,730 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:11:55,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:11:55,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1895249121, now seen corresponding path program 1 times [2022-12-14 11:11:55,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:11:55,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434879206] [2022-12-14 11:11:55,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:11:55,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:11:55,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:11:55,834 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 11:11:55,834 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:11:55,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434879206] [2022-12-14 11:11:55,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434879206] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:11:55,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328422483] [2022-12-14 11:11:55,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:11:55,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:11:55,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:11:55,835 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:11:55,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 11:11:55,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:11:55,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 11:11:55,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:11:55,958 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 11:11:55,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:11:55,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328422483] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:11:55,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 11:11:55,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-12-14 11:11:55,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795586175] [2022-12-14 11:11:55,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:11:55,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 11:11:55,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:11:55,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 11:11:55,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-14 11:11:55,959 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 11:11:55,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:11:55,991 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2022-12-14 11:11:55,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 11:11:55,991 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 38 [2022-12-14 11:11:55,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:11:55,992 INFO L225 Difference]: With dead ends: 41 [2022-12-14 11:11:55,992 INFO L226 Difference]: Without dead ends: 40 [2022-12-14 11:11:55,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-12-14 11:11:55,992 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 12 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:11:55,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 83 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:11:55,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-12-14 11:11:56,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-12-14 11:11:56,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 35 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 11:11:56,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2022-12-14 11:11:56,004 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 38 [2022-12-14 11:11:56,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:11:56,004 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2022-12-14 11:11:56,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 11:11:56,004 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2022-12-14 11:11:56,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-12-14 11:11:56,005 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:11:56,005 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-12-14 11:11:56,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-14 11:11:56,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:11:56,205 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:11:56,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:11:56,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1376767950, now seen corresponding path program 1 times [2022-12-14 11:11:56,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:11:56,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899860070] [2022-12-14 11:11:56,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:11:56,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:11:56,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:11:56,278 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 11:11:56,278 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:11:56,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899860070] [2022-12-14 11:11:56,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899860070] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:11:56,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873296800] [2022-12-14 11:11:56,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:11:56,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:11:56,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:11:56,279 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:11:56,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-14 11:11:56,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:11:56,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 11:11:56,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:11:56,414 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 11:11:56,414 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:11:56,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873296800] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:11:56,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 11:11:56,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-12-14 11:11:56,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933866879] [2022-12-14 11:11:56,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:11:56,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 11:11:56,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:11:56,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 11:11:56,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-14 11:11:56,416 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 11:11:56,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:11:56,452 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2022-12-14 11:11:56,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 11:11:56,452 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 39 [2022-12-14 11:11:56,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:11:56,453 INFO L225 Difference]: With dead ends: 40 [2022-12-14 11:11:56,453 INFO L226 Difference]: Without dead ends: 39 [2022-12-14 11:11:56,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-12-14 11:11:56,454 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 11 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:11:56,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 74 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:11:56,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-12-14 11:11:56,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-12-14 11:11:56,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 33 states have (on average 1.121212121212121) internal successors, (37), 34 states have internal predecessors, (37), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 11:11:56,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2022-12-14 11:11:56,461 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 39 [2022-12-14 11:11:56,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:11:56,462 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2022-12-14 11:11:56,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 11:11:56,462 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2022-12-14 11:11:56,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-12-14 11:11:56,466 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:11:56,466 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:11:56,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-14 11:11:56,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-14 11:11:56,668 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:11:56,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:11:56,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1376819492, now seen corresponding path program 1 times [2022-12-14 11:11:56,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:11:56,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216014936] [2022-12-14 11:11:56,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:11:56,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:11:56,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:11:56,748 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 11:11:56,748 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:11:56,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216014936] [2022-12-14 11:11:56,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216014936] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:11:56,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718487235] [2022-12-14 11:11:56,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:11:56,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:11:56,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:11:56,749 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:11:56,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-14 11:11:56,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:11:56,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 11:11:56,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:11:56,896 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 11:11:56,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:11:56,928 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 11:11:56,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718487235] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:11:56,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1901301387] [2022-12-14 11:11:56,929 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2022-12-14 11:11:56,929 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:11:56,930 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:11:56,930 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:11:56,930 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:11:56,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:56,950 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 11:11:56,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 17 treesize of output 26 [2022-12-14 11:11:56,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:56,965 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:11:56,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 11:11:56,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 11:11:56,987 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 6 treesize of output 5 [2022-12-14 11:11:56,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:56,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 11:11:56,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:56,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 11:11:57,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:57,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:11:57,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:57,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 11:11:57,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:57,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:11:57,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:57,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:11:57,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:57,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 11:11:57,110 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:57,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:57,112 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 203 treesize of output 183 [2022-12-14 11:11:57,119 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:57,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 197 treesize of output 183 [2022-12-14 11:11:57,128 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:11:57,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 199 treesize of output 96 [2022-12-14 11:11:57,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:11:57,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:11:57,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:11:57,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-12-14 11:11:57,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:11:57,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:11:57,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:11:57,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:11:57,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-12-14 11:11:57,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:11:57,268 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:11:57,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:11:57,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:11:57,350 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 76 treesize of output 58 [2022-12-14 11:11:57,358 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 51 treesize of output 45 [2022-12-14 11:11:57,428 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 76 treesize of output 58 [2022-12-14 11:11:57,434 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 51 treesize of output 45 [2022-12-14 11:11:57,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:11:57,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:11:57,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:11:57,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:11:57,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:11:57,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:11:57,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:11:57,818 INFO L321 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2022-12-14 11:11:57,818 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 192 treesize of output 182 [2022-12-14 11:11:57,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:57,864 INFO L321 Elim1Store]: treesize reduction 70, result has 24.7 percent of original size [2022-12-14 11:11:57,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 211 treesize of output 207 [2022-12-14 11:11:57,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:11:57,911 INFO L321 Elim1Store]: treesize reduction 78, result has 16.1 percent of original size [2022-12-14 11:11:57,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 199 treesize of output 187 [2022-12-14 11:11:58,630 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 49 for LOIs [2022-12-14 11:11:58,697 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:12:03,640 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3603#(and (<= 5 |ULTIMATE.start_sll_append_~data#1|) (<= |ULTIMATE.start_sll_append_#in~data#1| 5) (<= 0 |ULTIMATE.start_sll_append_~head#1.offset|) (<= 1 |ULTIMATE.start_sll_create_#in~data#1|) (= |ULTIMATE.start_main_~uneq~0#1| 5) (<= |ULTIMATE.start_sll_create_#in~data#1| 1) (<= 0 |ULTIMATE.start_sll_append_~head#1.base|) (<= |ULTIMATE.start_sll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_sll_append_#in~head#1.offset|) (= |ULTIMATE.start_main_~count~0#1| |ULTIMATE.start_main_#t~post17#1|) (< 2147483646 |ULTIMATE.start_main_#t~post17#1|) (<= |ULTIMATE.start_sll_create_~len#1| 0) (<= |ULTIMATE.start_sll_create_#res#1.offset| 0) (<= 1 |ULTIMATE.start_sll_create_~data#1|) (<= 5 |ULTIMATE.start_sll_append_#in~data#1|) (<= |ULTIMATE.start_sll_append_~data#1| 5) (<= 0 |ULTIMATE.start_sll_append_#in~head#1.base|) (<= |ULTIMATE.start_sll_append_#in~head#1.offset| 0) (= |ULTIMATE.start_main_~ptr~0#1.base| |ULTIMATE.start_main_~temp~2#1.base|) (= |ULTIMATE.start_main_~ptr~0#1.offset| |ULTIMATE.start_main_~temp~2#1.offset|) (= |ULTIMATE.start_main_~data~0#1| 1) (<= |ULTIMATE.start_sll_create_~data#1| 1) (<= |ULTIMATE.start_sll_create_#in~len#1| 2) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (= |ULTIMATE.start_sll_append_~new_last~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_sll_create_~len#1| 2147483648)) (<= |ULTIMATE.start_sll_append_~head#1.offset| 0) (<= 0 |ULTIMATE.start_sll_create_#res#1.offset|) (<= 0 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_sll_create_#in~len#1|) (<= 0 |ULTIMATE.start_sll_create_~head~0#1.offset|) (exists ((|v_ULTIMATE.start_main_~ptr~0#1.offset_42| Int) (|v_ULTIMATE.start_main_~ptr~0#1.base_42| Int)) (and (= |ULTIMATE.start_main_~data~0#1| (select (select |#memory_int| |v_ULTIMATE.start_main_~ptr~0#1.base_42|) |v_ULTIMATE.start_main_~ptr~0#1.offset_42|)) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~ptr~0#1.base_42|) (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_42| 4)) |ULTIMATE.start_main_~temp~2#1.offset|) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~ptr~0#1.base_42|) (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_42| 4)) |ULTIMATE.start_main_~temp~2#1.base|))) (= |#NULL.base| 0))' at error location [2022-12-14 11:12:03,641 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:12:03,641 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:12:03,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-12-14 11:12:03,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045448985] [2022-12-14 11:12:03,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:12:03,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 11:12:03,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:12:03,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 11:12:03,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=942, Unknown=0, NotChecked=0, Total=1056 [2022-12-14 11:12:03,642 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 12 states, 11 states have (on average 4.0) internal successors, (44), 12 states have internal predecessors, (44), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 11:12:03,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:12:03,735 INFO L93 Difference]: Finished difference Result 70 states and 76 transitions. [2022-12-14 11:12:03,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 11:12:03,736 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.0) internal successors, (44), 12 states have internal predecessors, (44), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 39 [2022-12-14 11:12:03,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:12:03,736 INFO L225 Difference]: With dead ends: 70 [2022-12-14 11:12:03,736 INFO L226 Difference]: Without dead ends: 69 [2022-12-14 11:12:03,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 87 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=150, Invalid=1182, Unknown=0, NotChecked=0, Total=1332 [2022-12-14 11:12:03,737 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 25 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:12:03,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 165 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:12:03,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-12-14 11:12:03,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 54. [2022-12-14 11:12:03,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 49 states have internal predecessors, (55), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 11:12:03,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2022-12-14 11:12:03,745 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 39 [2022-12-14 11:12:03,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:12:03,746 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2022-12-14 11:12:03,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.0) internal successors, (44), 12 states have internal predecessors, (44), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 11:12:03,746 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2022-12-14 11:12:03,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-12-14 11:12:03,746 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:12:03,746 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-12-14 11:12:03,751 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-14 11:12:03,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:12:03,948 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:12:03,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:12:03,949 INFO L85 PathProgramCache]: Analyzing trace with hash -269866398, now seen corresponding path program 1 times [2022-12-14 11:12:03,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:12:03,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859268835] [2022-12-14 11:12:03,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:12:03,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:12:03,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:12:04,034 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 11:12:04,034 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:12:04,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859268835] [2022-12-14 11:12:04,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859268835] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:12:04,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535712703] [2022-12-14 11:12:04,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:12:04,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:12:04,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:12:04,036 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:12:04,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-14 11:12:04,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:12:04,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 11:12:04,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:12:04,179 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 11:12:04,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:12:04,213 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 11:12:04,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535712703] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:12:04,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1625861774] [2022-12-14 11:12:04,215 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2022-12-14 11:12:04,215 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:12:04,216 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:12:04,216 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:12:04,216 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:12:04,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:04,242 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 11:12:04,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 17 treesize of output 26 [2022-12-14 11:12:04,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:04,259 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:12:04,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 11:12:04,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 11:12:04,287 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 6 treesize of output 5 [2022-12-14 11:12:04,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:04,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 11:12:04,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:04,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 11:12:04,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:04,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:12:04,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:04,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:12:04,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:04,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 11:12:04,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:04,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:12:04,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:04,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 11:12:04,387 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:04,388 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:12:04,394 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:04,395 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:12:04,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:04,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 11:12:04,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:04,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:12:04,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:04,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 11:12:04,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-12-14 11:12:04,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:12:04,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:12:04,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:12:04,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:12:04,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:12:04,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-12-14 11:12:04,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:12:04,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:12:04,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:12:04,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:04,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:12:04,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:04,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 11:12:04,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:04,949 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 214 treesize of output 194 [2022-12-14 11:12:04,959 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:04,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 208 treesize of output 196 [2022-12-14 11:12:04,975 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:04,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 212 treesize of output 200 [2022-12-14 11:12:05,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:12:05,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:12:05,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:12:05,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-12-14 11:12:05,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:12:05,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:05,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:12:05,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:05,268 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 11:12:05,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:12:05,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:12:05,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-12-14 11:12:05,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:12:05,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:12:05,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:05,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 11:12:05,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:05,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:12:05,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:12:05,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:12:05,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:12:05,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:12:05,803 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:12:05,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 141 treesize of output 152 [2022-12-14 11:12:05,811 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 135 treesize of output 127 [2022-12-14 11:12:05,832 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:12:05,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 127 treesize of output 144 [2022-12-14 11:12:05,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:05,847 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:12:05,847 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 127 treesize of output 111 [2022-12-14 11:12:06,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:12:06,109 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:12:06,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 141 treesize of output 158 [2022-12-14 11:12:06,121 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 133 treesize of output 125 [2022-12-14 11:12:06,145 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:12:06,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 125 treesize of output 136 [2022-12-14 11:12:06,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:06,158 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:12:06,159 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 127 treesize of output 111 [2022-12-14 11:12:06,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:12:06,541 INFO L321 Elim1Store]: treesize reduction 43, result has 14.0 percent of original size [2022-12-14 11:12:06,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 47 treesize of output 36 [2022-12-14 11:12:06,557 INFO L321 Elim1Store]: treesize reduction 43, result has 14.0 percent of original size [2022-12-14 11:12:06,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 47 treesize of output 36 [2022-12-14 11:12:06,977 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 21 for LOIs [2022-12-14 11:12:06,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 11:12:06,985 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 6 treesize of output 5 [2022-12-14 11:12:06,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:06,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 11:12:06,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:06,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 11:12:07,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:07,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:12:07,011 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:12:10,621 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4028#(and (<= 5 |ULTIMATE.start_sll_append_~data#1|) (<= |ULTIMATE.start_sll_append_#in~data#1| 5) (<= 0 |ULTIMATE.start_sll_append_~head#1.offset|) (<= 1 |ULTIMATE.start_sll_create_#in~data#1|) (= |ULTIMATE.start_main_~uneq~0#1| 5) (<= |ULTIMATE.start_sll_create_#in~data#1| 1) (<= 0 |ULTIMATE.start_sll_append_~head#1.base|) (<= |ULTIMATE.start_sll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_sll_append_#in~head#1.offset|) (<= 0 |ULTIMATE.start_sll_create_~new_head~0#1.offset|) (<= |ULTIMATE.start_sll_create_~len#1| 0) (<= |ULTIMATE.start_sll_create_#res#1.offset| 0) (= |ULTIMATE.start_main_~uneq~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~ptr~0#1.base|) |ULTIMATE.start_main_~ptr~0#1.offset|)) (< 2147483646 |ULTIMATE.start_main_#t~post20#1|) (<= |ULTIMATE.start_sll_create_~new_head~0#1.offset| 0) (= |ULTIMATE.start_main_~count~0#1| |ULTIMATE.start_main_#t~post20#1|) (<= 1 |ULTIMATE.start_sll_create_~data#1|) (<= 5 |ULTIMATE.start_sll_append_#in~data#1|) (<= |ULTIMATE.start_sll_append_~data#1| 5) (<= 0 |ULTIMATE.start_sll_append_#in~head#1.base|) (<= |ULTIMATE.start_sll_append_#in~head#1.offset| 0) (= |ULTIMATE.start_main_~data~0#1| 1) (<= |ULTIMATE.start_sll_create_~data#1| 1) (<= |ULTIMATE.start_sll_create_#in~len#1| 2) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 0 |ULTIMATE.start_sll_create_~len#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (= |ULTIMATE.start_sll_append_~new_last~0#1.offset| 0) (<= |ULTIMATE.start_sll_append_~head#1.offset| 0) (<= 0 |ULTIMATE.start_sll_create_#res#1.offset|) (<= 0 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_sll_create_#in~len#1|) (<= 0 |ULTIMATE.start_sll_create_~head~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-12-14 11:12:10,622 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:12:10,622 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:12:10,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-12-14 11:12:10,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511910051] [2022-12-14 11:12:10,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:12:10,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 11:12:10,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:12:10,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 11:12:10,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1019, Unknown=0, NotChecked=0, Total=1122 [2022-12-14 11:12:10,623 INFO L87 Difference]: Start difference. First operand 54 states and 61 transitions. Second operand has 12 states, 11 states have (on average 4.181818181818182) internal successors, (46), 12 states have internal predecessors, (46), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 11:12:10,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:12:10,722 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2022-12-14 11:12:10,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 11:12:10,722 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.181818181818182) internal successors, (46), 12 states have internal predecessors, (46), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 40 [2022-12-14 11:12:10,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:12:10,723 INFO L225 Difference]: With dead ends: 63 [2022-12-14 11:12:10,723 INFO L226 Difference]: Without dead ends: 54 [2022-12-14 11:12:10,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 87 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=132, Invalid=1274, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 11:12:10,724 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 26 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:12:10,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 120 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:12:10,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-12-14 11:12:10,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-12-14 11:12:10,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 49 states have internal predecessors, (53), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 11:12:10,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2022-12-14 11:12:10,732 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 40 [2022-12-14 11:12:10,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:12:10,732 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2022-12-14 11:12:10,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.181818181818182) internal successors, (46), 12 states have internal predecessors, (46), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 11:12:10,732 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2022-12-14 11:12:10,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-12-14 11:12:10,732 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:12:10,733 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:12:10,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-14 11:12:10,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-14 11:12:10,934 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:12:10,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:12:10,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1017726494, now seen corresponding path program 2 times [2022-12-14 11:12:10,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:12:10,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327670096] [2022-12-14 11:12:10,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:12:10,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:12:10,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:12:11,075 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 11:12:11,075 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:12:11,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327670096] [2022-12-14 11:12:11,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327670096] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:12:11,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577305645] [2022-12-14 11:12:11,075 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 11:12:11,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:12:11,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:12:11,076 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:12:11,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-14 11:12:11,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 11:12:11,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:12:11,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 80 conjunts are in the unsatisfiable core [2022-12-14 11:12:11,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:12:11,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:12:11,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:12:11,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:12:11,471 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:12:11,471 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 13 [2022-12-14 11:12:11,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:12:11,528 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (< |node_create_~temp~0#1.base| |c_#StackHeapBarrier|) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)) (exists ((v_ArrVal_1429 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |node_create_~temp~0#1.base| v_ArrVal_1429) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_1428 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |node_create_~temp~0#1.base| v_ArrVal_1428))))) is different from true [2022-12-14 11:12:11,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:11,546 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-14 11:12:11,547 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 28 treesize of output 34 [2022-12-14 11:12:11,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:11,551 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 11:12:11,558 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-12-14 11:12:11,559 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 15 treesize of output 15 [2022-12-14 11:12:11,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:12:11,628 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:12:11,628 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 11 [2022-12-14 11:12:11,646 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 2 not checked. [2022-12-14 11:12:11,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:12:11,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577305645] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:12:11,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1231591014] [2022-12-14 11:12:11,792 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2022-12-14 11:12:11,792 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:12:11,792 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:12:11,792 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:12:11,792 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:12:11,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:11,815 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 11:12:11,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 17 treesize of output 26 [2022-12-14 11:12:11,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:11,839 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:12:11,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 11:12:11,860 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 6 treesize of output 5 [2022-12-14 11:12:11,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 11:12:11,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:11,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 11:12:11,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:11,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 11:12:11,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:11,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:12:11,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:11,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 11:12:11,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:11,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:12:11,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:11,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:12:11,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:11,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 11:12:11,965 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:11,966 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:12:11,974 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:11,974 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:12:11,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:11,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 11:12:12,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:12,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 11:12:12,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:12,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:12:12,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-12-14 11:12:12,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:12:12,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:12:12,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:12:12,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:12:12,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:12,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 11:12:12,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:12,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:12:12,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:12:12,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-12-14 11:12:12,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:12:12,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:12:12,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:12:12,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:12,547 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 214 treesize of output 194 [2022-12-14 11:12:12,555 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:12,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 208 treesize of output 196 [2022-12-14 11:12:12,563 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:12,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 212 treesize of output 200 [2022-12-14 11:12:12,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:12:12,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-12-14 11:12:12,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:12:12,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:12:12,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:12:12,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:12,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:12:12,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:12,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 11:12:13,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:13,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 11:12:13,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:13,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:12:13,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-12-14 11:12:13,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:12:13,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:12:13,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:12:13,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:12:13,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:13,172 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 214 treesize of output 194 [2022-12-14 11:12:13,181 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:13,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 208 treesize of output 196 [2022-12-14 11:12:13,191 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:13,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 212 treesize of output 200 [2022-12-14 11:12:13,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:12:13,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:12:13,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:12:13,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:12:13,544 INFO L321 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2022-12-14 11:12:13,544 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 192 treesize of output 182 [2022-12-14 11:12:13,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:13,592 INFO L321 Elim1Store]: treesize reduction 70, result has 24.7 percent of original size [2022-12-14 11:12:13,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 211 treesize of output 207 [2022-12-14 11:12:13,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:13,640 INFO L321 Elim1Store]: treesize reduction 78, result has 16.1 percent of original size [2022-12-14 11:12:13,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 203 treesize of output 191 [2022-12-14 11:12:14,245 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 22 for LOIs [2022-12-14 11:12:14,252 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 6 treesize of output 5 [2022-12-14 11:12:14,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 11:12:14,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:14,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:12:14,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:14,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 11:12:14,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:14,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 11:12:14,280 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:12:19,625 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4464#(and (<= 5 |ULTIMATE.start_sll_append_~data#1|) (<= |ULTIMATE.start_sll_append_#in~data#1| 5) (<= 0 |ULTIMATE.start_sll_append_~head#1.offset|) (<= 1 |ULTIMATE.start_sll_create_#in~data#1|) (= |ULTIMATE.start_main_~uneq~0#1| 5) (<= |ULTIMATE.start_sll_create_#in~data#1| 1) (<= 0 |ULTIMATE.start_sll_append_~head#1.base|) (<= |ULTIMATE.start_sll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_sll_append_#in~head#1.offset|) (<= |ULTIMATE.start_sll_create_~len#1| 0) (<= |ULTIMATE.start_sll_create_#res#1.offset| 0) (= |ULTIMATE.start_main_~uneq~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~ptr~0#1.base|) |ULTIMATE.start_main_~ptr~0#1.offset|)) (< 2147483646 |ULTIMATE.start_main_#t~post20#1|) (= |ULTIMATE.start_main_~count~0#1| |ULTIMATE.start_main_#t~post20#1|) (<= 1 |ULTIMATE.start_sll_create_~data#1|) (<= 5 |ULTIMATE.start_sll_append_#in~data#1|) (<= |ULTIMATE.start_sll_append_~data#1| 5) (<= 0 |ULTIMATE.start_sll_append_#in~head#1.base|) (<= |ULTIMATE.start_sll_append_#in~head#1.offset| 0) (= |ULTIMATE.start_main_~data~0#1| 1) (<= |ULTIMATE.start_sll_create_~data#1| 1) (<= |ULTIMATE.start_sll_create_#in~len#1| 2) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 0 |ULTIMATE.start_sll_create_~len#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (= |ULTIMATE.start_sll_append_~new_last~0#1.offset| 0) (<= |ULTIMATE.start_sll_append_~head#1.offset| 0) (<= 0 |ULTIMATE.start_sll_create_#res#1.offset|) (<= 0 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_sll_create_#in~len#1|) (<= 0 |ULTIMATE.start_sll_create_~head~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-12-14 11:12:19,626 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:12:19,626 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 11:12:19,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 18] total 26 [2022-12-14 11:12:19,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810607645] [2022-12-14 11:12:19,626 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 11:12:19,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-14 11:12:19,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:12:19,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-14 11:12:19,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=2283, Unknown=1, NotChecked=96, Total=2550 [2022-12-14 11:12:19,627 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand has 26 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 23 states have internal predecessors, (69), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-12-14 11:12:20,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:12:20,135 INFO L93 Difference]: Finished difference Result 95 states and 103 transitions. [2022-12-14 11:12:20,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-14 11:12:20,135 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 23 states have internal predecessors, (69), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 50 [2022-12-14 11:12:20,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:12:20,137 INFO L225 Difference]: With dead ends: 95 [2022-12-14 11:12:20,137 INFO L226 Difference]: Without dead ends: 57 [2022-12-14 11:12:20,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 83 SyntacticMatches, 6 SemanticMatches, 65 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1114 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=307, Invalid=3986, Unknown=1, NotChecked=128, Total=4422 [2022-12-14 11:12:20,138 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 74 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:12:20,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 296 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 410 Invalid, 0 Unknown, 50 Unchecked, 0.2s Time] [2022-12-14 11:12:20,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-12-14 11:12:20,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2022-12-14 11:12:20,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 50 states have (on average 1.08) internal successors, (54), 51 states have internal predecessors, (54), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 11:12:20,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2022-12-14 11:12:20,147 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 50 [2022-12-14 11:12:20,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:12:20,147 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2022-12-14 11:12:20,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 23 states have internal predecessors, (69), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-12-14 11:12:20,148 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2022-12-14 11:12:20,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-14 11:12:20,148 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:12:20,148 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:12:20,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-12-14 11:12:20,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-14 11:12:20,349 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:12:20,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:12:20,349 INFO L85 PathProgramCache]: Analyzing trace with hash -2073349987, now seen corresponding path program 1 times [2022-12-14 11:12:20,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:12:20,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266326996] [2022-12-14 11:12:20,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:12:20,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:12:20,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:12:20,465 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 11:12:20,465 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:12:20,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266326996] [2022-12-14 11:12:20,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266326996] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:12:20,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642262891] [2022-12-14 11:12:20,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:12:20,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:12:20,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:12:20,466 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:12:20,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-14 11:12:20,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:12:20,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-14 11:12:20,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:12:20,638 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 11:12:20,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:12:20,720 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 11:12:20,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642262891] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:12:20,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [642565133] [2022-12-14 11:12:20,722 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2022-12-14 11:12:20,722 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:12:20,722 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:12:20,722 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:12:20,722 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:12:20,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:20,746 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:12:20,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 11:12:20,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:20,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 11:12:20,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 11:12:20,771 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 6 treesize of output 5 [2022-12-14 11:12:20,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:20,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 11:12:20,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:20,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 11:12:20,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:20,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:12:20,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:20,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 11:12:20,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:20,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:12:20,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:20,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 11:12:20,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:20,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:12:20,859 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:20,860 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:12:20,865 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:20,865 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:12:20,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:20,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 11:12:20,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:12:20,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:12:20,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-12-14 11:12:20,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:12:20,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:12:20,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:12:20,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:12:20,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:12:20,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:12:20,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-12-14 11:12:21,009 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:21,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:21,010 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 224 treesize of output 204 [2022-12-14 11:12:21,017 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:21,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 218 treesize of output 204 [2022-12-14 11:12:21,026 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:21,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 220 treesize of output 206 [2022-12-14 11:12:21,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:12:21,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-12-14 11:12:21,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:12:21,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:12:21,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:12:21,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:12:21,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:12:21,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:12:21,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-12-14 11:12:21,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:12:21,210 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:21,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:21,211 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 224 treesize of output 204 [2022-12-14 11:12:21,219 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:21,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 218 treesize of output 204 [2022-12-14 11:12:21,228 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:21,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 220 treesize of output 206 [2022-12-14 11:12:21,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:12:21,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:12:21,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:12:21,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:12:21,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-12-14 11:12:21,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-12-14 11:12:21,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:12:21,803 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 21 for LOIs [2022-12-14 11:12:21,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 11:12:21,812 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 6 treesize of output 5 [2022-12-14 11:12:21,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:21,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 11:12:21,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:21,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:12:21,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:21,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 11:12:21,834 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:12:26,295 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5058#(and (<= 5 |ULTIMATE.start_sll_append_~data#1|) (<= |ULTIMATE.start_sll_append_#in~data#1| 5) (<= 0 |ULTIMATE.start_sll_append_~head#1.offset|) (<= 1 |ULTIMATE.start_sll_create_#in~data#1|) (exists ((|v_ULTIMATE.start_main_~ptr~0#1.offset_63| Int) (|v_ULTIMATE.start_main_~ptr~0#1.base_63| Int)) (and (= |ULTIMATE.start_main_~data~0#1| (select (select |#memory_int| |v_ULTIMATE.start_main_~ptr~0#1.base_63|) |v_ULTIMATE.start_main_~ptr~0#1.offset_63|)) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~ptr~0#1.base_63|) (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_63| 4)) |ULTIMATE.start_main_~temp~2#1.base|) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~ptr~0#1.base_63|) (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_63| 4)) |ULTIMATE.start_main_~temp~2#1.offset|))) (= |ULTIMATE.start_main_~uneq~0#1| 5) (<= |ULTIMATE.start_sll_create_#in~data#1| 1) (<= 0 |ULTIMATE.start_sll_append_~head#1.base|) (<= |ULTIMATE.start_sll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_sll_append_#in~head#1.offset|) (= |ULTIMATE.start_main_~count~0#1| |ULTIMATE.start_main_#t~post17#1|) (< 2147483646 |ULTIMATE.start_main_#t~post17#1|) (<= |ULTIMATE.start_sll_create_~len#1| 0) (<= |ULTIMATE.start_sll_create_#res#1.offset| 0) (<= 1 |ULTIMATE.start_sll_create_~data#1|) (<= 5 |ULTIMATE.start_sll_append_#in~data#1|) (<= |ULTIMATE.start_sll_append_~data#1| 5) (<= 0 |ULTIMATE.start_sll_append_#in~head#1.base|) (<= |ULTIMATE.start_sll_append_#in~head#1.offset| 0) (= |ULTIMATE.start_main_~ptr~0#1.base| |ULTIMATE.start_main_~temp~2#1.base|) (= |ULTIMATE.start_main_~ptr~0#1.offset| |ULTIMATE.start_main_~temp~2#1.offset|) (= |ULTIMATE.start_main_~data~0#1| 1) (<= |ULTIMATE.start_sll_create_~data#1| 1) (<= |ULTIMATE.start_sll_create_#in~len#1| 2) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 0 |ULTIMATE.start_sll_create_~len#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (= |ULTIMATE.start_sll_append_~new_last~0#1.offset| 0) (<= |ULTIMATE.start_sll_append_~head#1.offset| 0) (<= 0 |ULTIMATE.start_sll_create_#res#1.offset|) (<= 0 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_sll_create_#in~len#1|) (<= 0 |ULTIMATE.start_sll_create_~head~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-12-14 11:12:26,295 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:12:26,295 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:12:26,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-12-14 11:12:26,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312624178] [2022-12-14 11:12:26,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:12:26,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-14 11:12:26,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:12:26,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-14 11:12:26,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=1649, Unknown=0, NotChecked=0, Total=1892 [2022-12-14 11:12:26,297 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand has 24 states, 23 states have (on average 3.260869565217391) internal successors, (75), 24 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 11:12:26,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:12:26,478 INFO L93 Difference]: Finished difference Result 117 states and 126 transitions. [2022-12-14 11:12:26,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-14 11:12:26,479 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.260869565217391) internal successors, (75), 24 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 56 [2022-12-14 11:12:26,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:12:26,480 INFO L225 Difference]: With dead ends: 117 [2022-12-14 11:12:26,480 INFO L226 Difference]: Without dead ends: 116 [2022-12-14 11:12:26,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 128 SyntacticMatches, 7 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1315 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=420, Invalid=2442, Unknown=0, NotChecked=0, Total=2862 [2022-12-14 11:12:26,482 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 79 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:12:26,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 186 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:12:26,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-12-14 11:12:26,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 86. [2022-12-14 11:12:26,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 80 states have (on average 1.125) internal successors, (90), 81 states have internal predecessors, (90), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 11:12:26,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 96 transitions. [2022-12-14 11:12:26,499 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 96 transitions. Word has length 56 [2022-12-14 11:12:26,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:12:26,500 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 96 transitions. [2022-12-14 11:12:26,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.260869565217391) internal successors, (75), 24 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 11:12:26,500 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 96 transitions. [2022-12-14 11:12:26,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-12-14 11:12:26,500 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:12:26,500 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:12:26,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-14 11:12:26,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-14 11:12:26,701 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:12:26,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:12:26,703 INFO L85 PathProgramCache]: Analyzing trace with hash 149062153, now seen corresponding path program 1 times [2022-12-14 11:12:26,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:12:26,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168611002] [2022-12-14 11:12:26,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:12:26,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:12:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:12:26,862 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 11:12:26,862 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:12:26,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168611002] [2022-12-14 11:12:26,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168611002] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:12:26,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584595905] [2022-12-14 11:12:26,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:12:26,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:12:26,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:12:26,863 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:12:26,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-14 11:12:26,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:12:26,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-14 11:12:26,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:12:27,005 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 11:12:27,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:12:27,101 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 11:12:27,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584595905] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:12:27,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1864185785] [2022-12-14 11:12:27,103 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2022-12-14 11:12:27,103 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:12:27,103 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:12:27,103 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:12:27,103 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:12:27,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:27,127 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:12:27,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 11:12:27,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:27,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 11:12:27,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 11:12:27,158 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 6 treesize of output 5 [2022-12-14 11:12:27,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:27,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 11:12:27,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:27,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 11:12:27,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:27,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:12:27,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:27,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 11:12:27,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:27,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:12:27,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:27,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 11:12:27,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:27,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:12:27,253 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:27,253 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:12:27,262 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:27,262 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:12:27,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:27,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 11:12:27,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:12:27,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:12:27,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:12:27,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-12-14 11:12:27,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:12:27,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:27,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 11:12:27,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:27,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:12:27,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:27,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 11:12:27,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:27,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:12:27,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:12:27,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:12:27,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:12:27,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-12-14 11:12:27,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:12:27,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:12:27,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:12:27,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:12:27,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:27,845 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 118 [2022-12-14 11:12:27,851 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:27,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 120 [2022-12-14 11:12:27,857 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:27,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 112 [2022-12-14 11:12:27,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:27,953 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 126 [2022-12-14 11:12:27,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 124 [2022-12-14 11:12:27,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 112 [2022-12-14 11:12:28,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:12:28,249 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:28,255 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:12:28,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 165 treesize of output 162 [2022-12-14 11:12:28,282 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:12:28,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 153 treesize of output 186 [2022-12-14 11:12:28,332 INFO L321 Elim1Store]: treesize reduction 8, result has 86.0 percent of original size [2022-12-14 11:12:28,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 145 treesize of output 184 [2022-12-14 11:12:28,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:28,350 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:12:28,351 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 143 treesize of output 127 [2022-12-14 11:12:34,209 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:34,214 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:12:34,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 165 treesize of output 162 [2022-12-14 11:12:34,241 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:12:34,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 153 treesize of output 186 [2022-12-14 11:12:34,295 INFO L321 Elim1Store]: treesize reduction 8, result has 86.0 percent of original size [2022-12-14 11:12:34,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 145 treesize of output 184 [2022-12-14 11:12:34,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:34,312 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:12:34,312 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 143 treesize of output 127 [2022-12-14 11:12:39,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:12:40,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:12:40,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:12:40,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:12:40,631 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 68 for LOIs [2022-12-14 11:12:40,716 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:12:43,861 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5701#(and (<= 5 |ULTIMATE.start_sll_append_~data#1|) (<= |ULTIMATE.start_sll_append_#in~data#1| 5) (<= 0 |ULTIMATE.start_sll_append_~head#1.offset|) (<= 1 |ULTIMATE.start_sll_create_#in~data#1|) (= |ULTIMATE.start_main_~uneq~0#1| 5) (<= |ULTIMATE.start_sll_create_#in~data#1| 1) (<= 0 |ULTIMATE.start_sll_append_~head#1.base|) (<= |ULTIMATE.start_sll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_sll_append_#in~head#1.offset|) (<= 0 |ULTIMATE.start_sll_create_~new_head~0#1.offset|) (<= |ULTIMATE.start_sll_create_~len#1| 0) (<= |ULTIMATE.start_sll_create_#res#1.offset| 0) (= |ULTIMATE.start_main_~uneq~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~ptr~0#1.base|) |ULTIMATE.start_main_~ptr~0#1.offset|)) (< 2147483646 |ULTIMATE.start_main_#t~post20#1|) (<= |ULTIMATE.start_sll_create_~new_head~0#1.offset| 0) (= |ULTIMATE.start_main_~count~0#1| |ULTIMATE.start_main_#t~post20#1|) (<= 1 |ULTIMATE.start_sll_create_~data#1|) (<= 5 |ULTIMATE.start_sll_append_#in~data#1|) (<= |ULTIMATE.start_sll_append_~data#1| 5) (<= 0 |ULTIMATE.start_sll_append_#in~head#1.base|) (<= |ULTIMATE.start_sll_append_#in~head#1.offset| 0) (= |ULTIMATE.start_main_~data~0#1| 1) (<= |ULTIMATE.start_sll_create_~data#1| 1) (<= |ULTIMATE.start_sll_create_#in~len#1| 2) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (= |ULTIMATE.start_sll_append_~new_last~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_sll_create_~len#1| 2147483648)) (<= |ULTIMATE.start_sll_append_~head#1.offset| 0) (<= 0 |ULTIMATE.start_sll_create_#res#1.offset|) (<= 0 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_sll_create_#in~len#1|) (<= 0 |ULTIMATE.start_sll_create_~head~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-12-14 11:12:43,861 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:12:43,861 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:12:43,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-12-14 11:12:43,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039084829] [2022-12-14 11:12:43,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:12:43,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-14 11:12:43,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:12:43,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-14 11:12:43,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=1751, Unknown=0, NotChecked=0, Total=1980 [2022-12-14 11:12:43,863 INFO L87 Difference]: Start difference. First operand 86 states and 96 transitions. Second operand has 24 states, 23 states have (on average 3.347826086956522) internal successors, (77), 24 states have internal predecessors, (77), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 11:12:44,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:12:44,119 INFO L93 Difference]: Finished difference Result 107 states and 116 transitions. [2022-12-14 11:12:44,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-14 11:12:44,120 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.347826086956522) internal successors, (77), 24 states have internal predecessors, (77), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2022-12-14 11:12:44,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:12:44,120 INFO L225 Difference]: With dead ends: 107 [2022-12-14 11:12:44,120 INFO L226 Difference]: Without dead ends: 86 [2022-12-14 11:12:44,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 132 SyntacticMatches, 5 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1311 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=402, Invalid=2904, Unknown=0, NotChecked=0, Total=3306 [2022-12-14 11:12:44,121 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 52 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:12:44,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 202 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:12:44,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-12-14 11:12:44,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2022-12-14 11:12:44,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 80 states have (on average 1.0625) internal successors, (85), 81 states have internal predecessors, (85), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 11:12:44,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 91 transitions. [2022-12-14 11:12:44,134 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 91 transitions. Word has length 57 [2022-12-14 11:12:44,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:12:44,134 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 91 transitions. [2022-12-14 11:12:44,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.347826086956522) internal successors, (77), 24 states have internal predecessors, (77), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 11:12:44,134 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 91 transitions. [2022-12-14 11:12:44,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-12-14 11:12:44,135 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:12:44,135 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:12:44,139 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-14 11:12:44,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:12:44,336 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:12:44,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:12:44,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1636890649, now seen corresponding path program 2 times [2022-12-14 11:12:44,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:12:44,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381360527] [2022-12-14 11:12:44,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:12:44,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:12:44,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:12:44,615 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 11:12:44,615 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:12:44,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381360527] [2022-12-14 11:12:44,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381360527] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:12:44,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027338671] [2022-12-14 11:12:44,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 11:12:44,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:12:44,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:12:44,616 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:12:44,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-14 11:12:45,306 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2022-12-14 11:12:45,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:12:45,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-14 11:12:45,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:12:45,372 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 11:12:45,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:12:45,675 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 11:12:45,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027338671] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:12:45,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1530500761] [2022-12-14 11:12:45,677 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2022-12-14 11:12:45,677 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:12:45,678 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:12:45,678 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:12:45,678 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:12:45,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:45,699 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 11:12:45,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 17 treesize of output 26 [2022-12-14 11:12:45,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:45,721 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:12:45,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 11:12:45,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 11:12:45,751 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 6 treesize of output 5 [2022-12-14 11:12:45,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:45,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 11:12:45,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:45,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 11:12:45,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:45,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:12:45,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:45,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 11:12:45,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:45,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:12:45,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:45,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 11:12:45,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:45,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:12:45,852 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:45,853 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:12:45,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:45,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 11:12:45,871 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:45,871 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:12:46,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:46,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 11:12:46,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:46,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:12:46,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:12:46,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:12:46,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-12-14 11:12:46,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:12:46,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:12:46,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:46,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:12:46,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:46,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 11:12:46,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:12:46,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-12-14 11:12:46,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:12:46,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:12:46,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:12:46,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:46,437 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 211 treesize of output 191 [2022-12-14 11:12:46,445 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:46,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 205 treesize of output 193 [2022-12-14 11:12:46,456 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:46,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 209 treesize of output 197 [2022-12-14 11:12:46,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-12-14 11:12:46,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:12:46,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:12:46,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:12:46,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:12:46,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:46,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:12:46,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:46,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 11:12:46,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:12:46,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-12-14 11:12:46,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:12:46,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:12:46,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:12:47,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:47,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:12:47,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:47,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 11:12:47,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:47,078 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 219 treesize of output 199 [2022-12-14 11:12:47,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 213 treesize of output 197 [2022-12-14 11:12:47,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 213 treesize of output 197 [2022-12-14 11:12:47,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:12:47,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:12:47,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:12:47,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:12:47,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:12:47,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:12:47,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:12:47,757 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 21 for LOIs [2022-12-14 11:12:47,763 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 6 treesize of output 5 [2022-12-14 11:12:47,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 11:12:47,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:47,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 11:12:47,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:47,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:12:47,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:47,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 11:12:47,789 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:12:51,904 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6511#(and (<= 5 |ULTIMATE.start_sll_append_~data#1|) (<= |ULTIMATE.start_sll_append_#in~data#1| 5) (<= 0 |ULTIMATE.start_sll_append_~head#1.offset|) (<= 1 |ULTIMATE.start_sll_create_#in~data#1|) (= |ULTIMATE.start_main_~uneq~0#1| 5) (<= |ULTIMATE.start_sll_create_#in~data#1| 1) (<= 0 |ULTIMATE.start_sll_append_~head#1.base|) (<= |ULTIMATE.start_sll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_sll_append_#in~head#1.offset|) (<= |ULTIMATE.start_sll_create_~len#1| 0) (<= |ULTIMATE.start_sll_create_#res#1.offset| 0) (= |ULTIMATE.start_main_~uneq~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~ptr~0#1.base|) |ULTIMATE.start_main_~ptr~0#1.offset|)) (< 2147483646 |ULTIMATE.start_main_#t~post20#1|) (= |ULTIMATE.start_main_~count~0#1| |ULTIMATE.start_main_#t~post20#1|) (<= 1 |ULTIMATE.start_sll_create_~data#1|) (<= 5 |ULTIMATE.start_sll_append_#in~data#1|) (<= |ULTIMATE.start_sll_append_~data#1| 5) (<= 0 |ULTIMATE.start_sll_append_#in~head#1.base|) (<= |ULTIMATE.start_sll_append_#in~head#1.offset| 0) (= |ULTIMATE.start_main_~data~0#1| 1) (<= |ULTIMATE.start_sll_create_~data#1| 1) (<= |ULTIMATE.start_sll_create_#in~len#1| 2) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 0 |ULTIMATE.start_sll_create_~len#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (= |ULTIMATE.start_sll_append_~new_last~0#1.offset| 0) (<= |ULTIMATE.start_sll_append_~head#1.offset| 0) (<= 0 |ULTIMATE.start_sll_create_#res#1.offset|) (<= 0 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_sll_create_#in~len#1|) (<= 0 |ULTIMATE.start_sll_create_~head~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-12-14 11:12:51,904 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:12:51,904 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:12:51,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 43 [2022-12-14 11:12:51,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92603079] [2022-12-14 11:12:51,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:12:51,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-12-14 11:12:51,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:12:51,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-12-14 11:12:51,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=567, Invalid=3465, Unknown=0, NotChecked=0, Total=4032 [2022-12-14 11:12:51,906 INFO L87 Difference]: Start difference. First operand 86 states and 91 transitions. Second operand has 44 states, 43 states have (on average 2.953488372093023) internal successors, (127), 44 states have internal predecessors, (127), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 11:12:52,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:12:52,315 INFO L93 Difference]: Finished difference Result 174 states and 194 transitions. [2022-12-14 11:12:52,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-12-14 11:12:52,315 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 2.953488372093023) internal successors, (127), 44 states have internal predecessors, (127), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 82 [2022-12-14 11:12:52,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:12:52,317 INFO L225 Difference]: With dead ends: 174 [2022-12-14 11:12:52,317 INFO L226 Difference]: Without dead ends: 132 [2022-12-14 11:12:52,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 188 SyntacticMatches, 15 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3844 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1260, Invalid=7112, Unknown=0, NotChecked=0, Total=8372 [2022-12-14 11:12:52,318 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 241 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:12:52,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 302 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:12:52,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-12-14 11:12:52,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 128. [2022-12-14 11:12:52,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 122 states have (on average 1.0327868852459017) internal successors, (126), 123 states have internal predecessors, (126), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 11:12:52,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 132 transitions. [2022-12-14 11:12:52,336 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 132 transitions. Word has length 82 [2022-12-14 11:12:52,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:12:52,337 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 132 transitions. [2022-12-14 11:12:52,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 2.953488372093023) internal successors, (127), 44 states have internal predecessors, (127), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 11:12:52,337 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 132 transitions. [2022-12-14 11:12:52,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-12-14 11:12:52,338 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:12:52,338 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 18, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:12:52,344 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-12-14 11:12:52,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:12:52,538 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:12:52,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:12:52,539 INFO L85 PathProgramCache]: Analyzing trace with hash -936178339, now seen corresponding path program 2 times [2022-12-14 11:12:52,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:12:52,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480204225] [2022-12-14 11:12:52,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:12:52,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:12:52,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:12:53,195 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 0 proven. 855 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 11:12:53,195 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:12:53,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480204225] [2022-12-14 11:12:53,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480204225] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:12:53,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364320320] [2022-12-14 11:12:53,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 11:12:53,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:12:53,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:12:53,197 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:12:53,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-14 11:12:53,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2022-12-14 11:12:53,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:12:53,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 160 conjunts are in the unsatisfiable core [2022-12-14 11:12:53,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:12:53,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:12:54,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:12:54,128 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:12:54,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-14 11:12:54,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:12:54,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:12:54,319 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:12:54,320 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 28 [2022-12-14 11:12:54,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 7 [2022-12-14 11:12:54,328 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:12:54,328 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 15 treesize of output 7 [2022-12-14 11:12:54,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:54,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:54,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:54,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:54,448 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:12:54,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 41 [2022-12-14 11:12:54,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:54,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:54,455 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:54,459 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 11:12:54,459 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 79 treesize of output 60 [2022-12-14 11:12:54,474 INFO L321 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2022-12-14 11:12:54,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 30 [2022-12-14 11:12:54,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:54,884 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:54,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:54,909 INFO L321 Elim1Store]: treesize reduction 143, result has 14.9 percent of original size [2022-12-14 11:12:54,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 178 treesize of output 103 [2022-12-14 11:12:54,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:54,924 INFO L321 Elim1Store]: treesize reduction 93, result has 7.0 percent of original size [2022-12-14 11:12:54,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 7 case distinctions, treesize of input 241 treesize of output 176 [2022-12-14 11:12:55,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:55,891 INFO L321 Elim1Store]: treesize reduction 279, result has 3.5 percent of original size [2022-12-14 11:12:55,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 20 case distinctions, treesize of input 312 treesize of output 175 [2022-12-14 11:12:56,010 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 204 proven. 21 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2022-12-14 11:12:56,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:12:57,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364320320] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:12:57,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2015342105] [2022-12-14 11:12:57,642 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2022-12-14 11:12:57,642 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:12:57,642 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:12:57,643 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:12:57,643 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:12:57,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:57,662 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 11:12:57,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 17 treesize of output 26 [2022-12-14 11:12:57,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:57,675 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:12:57,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 11:12:57,690 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 6 treesize of output 5 [2022-12-14 11:12:57,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 11:12:57,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:57,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:12:57,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:57,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 11:12:57,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:57,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 11:12:57,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:57,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 11:12:57,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:57,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:12:57,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:57,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 11:12:57,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:57,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:12:57,787 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:57,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:12:57,788 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 203 treesize of output 183 [2022-12-14 11:12:57,796 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:57,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 197 treesize of output 183 [2022-12-14 11:12:57,807 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:12:57,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 199 treesize of output 96 [2022-12-14 11:12:57,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:12:57,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:12:57,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:12:57,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:12:57,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-12-14 11:12:57,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:12:57,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-12-14 11:12:57,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:12:57,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:12:57,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:12:57,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:12:57,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:12:57,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:12:58,039 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 57 treesize of output 51 [2022-12-14 11:12:58,043 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 70 treesize of output 52 [2022-12-14 11:12:58,095 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 57 treesize of output 51 [2022-12-14 11:12:58,100 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 70 treesize of output 52 [2022-12-14 11:12:58,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:12:58,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:12:58,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:12:58,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:12:58,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:12:58,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:12:58,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:12:58,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-12-14 11:12:58,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:12:58,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-12-14 11:12:58,663 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 49 for LOIs [2022-12-14 11:12:58,724 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:13:08,253 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7714#(and (<= 5 |ULTIMATE.start_sll_append_~data#1|) (<= |ULTIMATE.start_sll_append_#in~data#1| 5) (<= 0 |ULTIMATE.start_sll_append_~head#1.offset|) (<= 1 |ULTIMATE.start_sll_create_#in~data#1|) (= |ULTIMATE.start_main_~uneq~0#1| 5) (<= |ULTIMATE.start_sll_create_#in~data#1| 1) (<= 0 |ULTIMATE.start_sll_append_~head#1.base|) (<= |ULTIMATE.start_sll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_sll_append_#in~head#1.offset|) (= |ULTIMATE.start_main_~count~0#1| |ULTIMATE.start_main_#t~post17#1|) (< 2147483646 |ULTIMATE.start_main_#t~post17#1|) (<= |ULTIMATE.start_sll_create_~len#1| 0) (<= |ULTIMATE.start_sll_create_#res#1.offset| 0) (<= 1 |ULTIMATE.start_sll_create_~data#1|) (<= 5 |ULTIMATE.start_sll_append_#in~data#1|) (<= |ULTIMATE.start_sll_append_~data#1| 5) (exists ((|v_ULTIMATE.start_main_~ptr~0#1.base_107| Int) (|v_ULTIMATE.start_main_~ptr~0#1.offset_107| Int)) (and (= |ULTIMATE.start_main_~temp~2#1.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~ptr~0#1.base_107|) (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_107| 4))) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~ptr~0#1.base_107|) (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_107| 4)) |ULTIMATE.start_main_~temp~2#1.offset|) (= |ULTIMATE.start_main_~data~0#1| (select (select |#memory_int| |v_ULTIMATE.start_main_~ptr~0#1.base_107|) |v_ULTIMATE.start_main_~ptr~0#1.offset_107|)))) (<= 0 |ULTIMATE.start_sll_append_#in~head#1.base|) (<= |ULTIMATE.start_sll_append_#in~head#1.offset| 0) (= |ULTIMATE.start_main_~ptr~0#1.base| |ULTIMATE.start_main_~temp~2#1.base|) (= |ULTIMATE.start_main_~ptr~0#1.offset| |ULTIMATE.start_main_~temp~2#1.offset|) (= |ULTIMATE.start_main_~data~0#1| 1) (<= |ULTIMATE.start_sll_create_~data#1| 1) (<= |ULTIMATE.start_sll_create_#in~len#1| 2) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (= |ULTIMATE.start_sll_append_~new_last~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_sll_create_~len#1| 2147483648)) (<= |ULTIMATE.start_sll_append_~head#1.offset| 0) (<= 0 |ULTIMATE.start_sll_create_#res#1.offset|) (<= 0 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_sll_create_#in~len#1|) (<= 0 |ULTIMATE.start_sll_create_~head~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-12-14 11:13:08,253 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:13:08,253 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 11:13:08,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 27] total 65 [2022-12-14 11:13:08,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904140203] [2022-12-14 11:13:08,254 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 11:13:08,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-12-14 11:13:08,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:13:08,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-12-14 11:13:08,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=617, Invalid=8889, Unknown=0, NotChecked=0, Total=9506 [2022-12-14 11:13:08,256 INFO L87 Difference]: Start difference. First operand 128 states and 132 transitions. Second operand has 65 states, 61 states have (on average 2.5245901639344264) internal successors, (154), 60 states have internal predecessors, (154), 4 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-12-14 11:13:17,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:13:17,164 INFO L93 Difference]: Finished difference Result 241 states and 248 transitions. [2022-12-14 11:13:17,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-12-14 11:13:17,165 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 61 states have (on average 2.5245901639344264) internal successors, (154), 60 states have internal predecessors, (154), 4 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 126 [2022-12-14 11:13:17,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:13:17,166 INFO L225 Difference]: With dead ends: 241 [2022-12-14 11:13:17,166 INFO L226 Difference]: Without dead ends: 135 [2022-12-14 11:13:17,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 280 SyntacticMatches, 19 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7139 ImplicationChecksByTransitivity, 20.2s TimeCoverageRelationStatistics Valid=2479, Invalid=21391, Unknown=0, NotChecked=0, Total=23870 [2022-12-14 11:13:17,171 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 419 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:13:17,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 604 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1055 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-14 11:13:17,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-12-14 11:13:17,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133. [2022-12-14 11:13:17,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 127 states have (on average 1.031496062992126) internal successors, (131), 128 states have internal predecessors, (131), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 11:13:17,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 137 transitions. [2022-12-14 11:13:17,190 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 137 transitions. Word has length 126 [2022-12-14 11:13:17,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:13:17,191 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 137 transitions. [2022-12-14 11:13:17,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 61 states have (on average 2.5245901639344264) internal successors, (154), 60 states have internal predecessors, (154), 4 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-12-14 11:13:17,191 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 137 transitions. [2022-12-14 11:13:17,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-12-14 11:13:17,192 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:13:17,192 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 19, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:13:17,198 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-12-14 11:13:17,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-12-14 11:13:17,393 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:13:17,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:13:17,394 INFO L85 PathProgramCache]: Analyzing trace with hash -264838886, now seen corresponding path program 3 times [2022-12-14 11:13:17,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:13:17,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805770328] [2022-12-14 11:13:17,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:13:17,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:13:17,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:13:18,204 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 11:13:18,205 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:13:18,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805770328] [2022-12-14 11:13:18,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805770328] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:13:18,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569642161] [2022-12-14 11:13:18,205 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 11:13:18,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:13:18,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:13:18,206 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:13:18,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-14 11:13:18,450 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 11:13:18,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:13:18,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 41 conjunts are in the unsatisfiable core [2022-12-14 11:13:18,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:13:18,542 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 11:13:18,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:13:19,473 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 11:13:19,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569642161] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:13:19,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [826420774] [2022-12-14 11:13:19,475 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2022-12-14 11:13:19,475 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:13:19,475 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:13:19,475 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:13:19,475 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:13:19,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:13:19,495 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 11:13:19,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 11:13:19,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:13:19,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 11:13:19,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 11:13:19,524 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 6 treesize of output 5 [2022-12-14 11:13:19,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:13:19,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 11:13:19,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:13:19,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 11:13:19,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:13:19,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:13:19,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:13:19,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 11:13:19,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:13:19,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:13:19,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:13:19,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:13:19,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:13:19,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 11:13:19,612 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:13:19,613 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:13:19,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:13:19,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 11:13:19,628 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:13:19,628 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 11:13:19,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:13:19,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-12-14 11:13:19,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:13:19,679 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:13:19,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:13:19,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:13:19,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-12-14 11:13:19,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-12-14 11:13:19,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:13:19,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:13:19,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:13:19,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:13:19,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:13:19,807 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 19 treesize of output 7 [2022-12-14 11:13:19,832 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 19 treesize of output 7 [2022-12-14 11:13:19,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:13:19,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:13:19,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:13:20,124 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 141 treesize of output 133 [2022-12-14 11:13:20,144 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:13:20,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 133 treesize of output 150 [2022-12-14 11:13:20,162 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:13:20,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 125 treesize of output 136 [2022-12-14 11:13:20,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:13:20,175 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:13:20,175 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 127 treesize of output 111 [2022-12-14 11:13:20,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:13:20,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:13:20,610 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:13:20,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 141 treesize of output 152 [2022-12-14 11:13:20,627 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:13:20,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 135 treesize of output 152 [2022-12-14 11:13:20,635 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 127 treesize of output 119 [2022-12-14 11:13:20,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:13:20,646 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:13:20,646 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 127 treesize of output 111 [2022-12-14 11:13:20,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-12-14 11:13:20,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 11:13:20,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-12-14 11:13:21,201 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 21 for LOIs [2022-12-14 11:13:21,208 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 6 treesize of output 5 [2022-12-14 11:13:21,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 11:13:21,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:13:21,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 11:13:21,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:13:21,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 11:13:21,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:13:21,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:13:21,234 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:13:26,547 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9180#(and (<= 5 |ULTIMATE.start_sll_append_~data#1|) (<= |ULTIMATE.start_sll_append_#in~data#1| 5) (<= 0 |ULTIMATE.start_sll_append_~head#1.offset|) (<= 1 |ULTIMATE.start_sll_create_#in~data#1|) (exists ((|v_ULTIMATE.start_main_~ptr~0#1.base_131| Int) (|v_ULTIMATE.start_main_~ptr~0#1.offset_131| Int)) (and (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~ptr~0#1.base_131|) (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_131| 4)) |ULTIMATE.start_main_~temp~2#1.offset|) (= |ULTIMATE.start_main_~data~0#1| (select (select |#memory_int| |v_ULTIMATE.start_main_~ptr~0#1.base_131|) |v_ULTIMATE.start_main_~ptr~0#1.offset_131|)) (= |ULTIMATE.start_main_~temp~2#1.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~ptr~0#1.base_131|) (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_131| 4))))) (= |ULTIMATE.start_main_~uneq~0#1| 5) (<= |ULTIMATE.start_sll_create_#in~data#1| 1) (<= 0 |ULTIMATE.start_sll_append_~head#1.base|) (<= |ULTIMATE.start_sll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_sll_append_#in~head#1.offset|) (<= 0 |ULTIMATE.start_sll_create_~new_head~0#1.offset|) (= |ULTIMATE.start_main_~count~0#1| |ULTIMATE.start_main_#t~post17#1|) (< 2147483646 |ULTIMATE.start_main_#t~post17#1|) (<= |ULTIMATE.start_sll_create_~len#1| 0) (<= |ULTIMATE.start_sll_create_#res#1.offset| 0) (<= |ULTIMATE.start_sll_create_~new_head~0#1.offset| 0) (<= 1 |ULTIMATE.start_sll_create_~data#1|) (<= 5 |ULTIMATE.start_sll_append_#in~data#1|) (<= |ULTIMATE.start_sll_append_~data#1| 5) (<= 0 |ULTIMATE.start_sll_append_#in~head#1.base|) (<= |ULTIMATE.start_sll_append_#in~head#1.offset| 0) (= |ULTIMATE.start_main_~ptr~0#1.base| |ULTIMATE.start_main_~temp~2#1.base|) (= |ULTIMATE.start_main_~ptr~0#1.offset| |ULTIMATE.start_main_~temp~2#1.offset|) (= |ULTIMATE.start_main_~data~0#1| 1) (<= |ULTIMATE.start_sll_create_~data#1| 1) (<= |ULTIMATE.start_sll_create_#in~len#1| 2) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (= |ULTIMATE.start_sll_append_~new_last~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_sll_create_~len#1| 2147483648)) (<= |ULTIMATE.start_sll_append_~head#1.offset| 0) (<= 0 |ULTIMATE.start_sll_create_#res#1.offset|) (<= 0 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_sll_create_#in~len#1|) (<= 0 |ULTIMATE.start_sll_create_~head~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-12-14 11:13:26,547 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:13:26,547 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:13:26,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 83 [2022-12-14 11:13:26,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29412843] [2022-12-14 11:13:26,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:13:26,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-12-14 11:13:26,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:13:26,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-12-14 11:13:26,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1912, Invalid=9008, Unknown=0, NotChecked=0, Total=10920 [2022-12-14 11:13:26,549 INFO L87 Difference]: Start difference. First operand 133 states and 137 transitions. Second operand has 84 states, 83 states have (on average 2.710843373493976) internal successors, (225), 84 states have internal predecessors, (225), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 11:13:27,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:13:27,757 INFO L93 Difference]: Finished difference Result 344 states and 368 transitions. [2022-12-14 11:13:27,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-12-14 11:13:27,758 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 83 states have (on average 2.710843373493976) internal successors, (225), 84 states have internal predecessors, (225), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 133 [2022-12-14 11:13:27,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:13:27,760 INFO L225 Difference]: With dead ends: 344 [2022-12-14 11:13:27,760 INFO L226 Difference]: Without dead ends: 343 [2022-12-14 11:13:27,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 315 SyntacticMatches, 20 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9078 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=4414, Invalid=16466, Unknown=0, NotChecked=0, Total=20880 [2022-12-14 11:13:27,762 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 517 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:13:27,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [517 Valid, 359 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:13:27,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-12-14 11:13:27,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 238. [2022-12-14 11:13:27,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 232 states have (on average 1.1077586206896552) internal successors, (257), 233 states have internal predecessors, (257), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 11:13:27,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 263 transitions. [2022-12-14 11:13:27,795 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 263 transitions. Word has length 133 [2022-12-14 11:13:27,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:13:27,795 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 263 transitions. [2022-12-14 11:13:27,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 83 states have (on average 2.710843373493976) internal successors, (225), 84 states have internal predecessors, (225), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 11:13:27,795 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 263 transitions. [2022-12-14 11:13:27,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-14 11:13:27,796 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:13:27,796 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:13:27,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-12-14 11:13:27,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-12-14 11:13:27,997 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 11:13:27,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:13:27,998 INFO L85 PathProgramCache]: Analyzing trace with hash 378331436, now seen corresponding path program 3 times [2022-12-14 11:13:27,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:13:27,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331458672] [2022-12-14 11:13:27,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:13:27,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:13:28,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:13:28,719 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 11:13:28,719 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:13:28,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331458672] [2022-12-14 11:13:28,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331458672] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:13:28,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362215122] [2022-12-14 11:13:28,720 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 11:13:28,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:13:28,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:13:28,720 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:13:28,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8f25c9b-53cc-4132-acb2-302a20579963/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-14 11:13:28,933 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 11:13:28,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:13:28,938 WARN L261 TraceCheckSpWp]: Trace formula consists of 673 conjuncts, 348 conjunts are in the unsatisfiable core [2022-12-14 11:13:28,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:13:28,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:13:29,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:13:29,174 INFO L321 Elim1Store]: treesize reduction 51, result has 22.7 percent of original size [2022-12-14 11:13:29,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 35 [2022-12-14 11:13:29,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:13:29,208 INFO L321 Elim1Store]: treesize reduction 42, result has 36.4 percent of original size [2022-12-14 11:13:29,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 46 [2022-12-14 11:13:29,215 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 11:13:29,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2022-12-14 11:13:30,274 INFO L321 Elim1Store]: treesize reduction 239, result has 17.9 percent of original size [2022-12-14 11:13:30,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 10 new quantified variables, introduced 14 case distinctions, treesize of input 523 treesize of output 221 [2022-12-14 11:13:30,337 INFO L321 Elim1Store]: treesize reduction 244, result has 11.9 percent of original size [2022-12-14 11:13:30,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 11 new quantified variables, introduced 14 case distinctions, treesize of input 908 treesize of output 344 [2022-12-14 11:17:17,046 WARN L233 SmtUtils]: Spent 1.57m on a formula simplification. DAG size of input: 2130 DAG size of output: 1994 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-14 11:17:17,053 INFO L321 Elim1Store]: treesize reduction 408, result has 92.4 percent of original size [2022-12-14 11:17:17,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 29 select indices, 29 select index equivalence classes, 1 disjoint index pairs (out of 406 index pairs), introduced 64 new quantified variables, introduced 406 case distinctions, treesize of input 3496 treesize of output 6083