./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-data/packet_filter.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_de32c907-7055-43c1-b8c2-77d7983b6ba4/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de32c907-7055-43c1-b8c2-77d7983b6ba4/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de32c907-7055-43c1-b8c2-77d7983b6ba4/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de32c907-7055-43c1-b8c2-77d7983b6ba4/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/heap-data/packet_filter.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de32c907-7055-43c1-b8c2-77d7983b6ba4/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de32c907-7055-43c1-b8c2-77d7983b6ba4/bin/utaipan-6cKwYrpEi9 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d604fdd8f7c4d34db0106d8a0ff422218ae80e9ee6eb03f691b84d2fcc8ad49f --- 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-6b4ec56 [2022-11-20 19:44:27,509 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 19:44:27,512 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 19:44:27,539 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 19:44:27,541 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 19:44:27,546 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 19:44:27,549 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 19:44:27,552 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 19:44:27,553 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 19:44:27,554 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 19:44:27,555 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 19:44:27,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 19:44:27,556 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 19:44:27,557 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 19:44:27,558 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 19:44:27,559 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 19:44:27,560 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 19:44:27,561 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 19:44:27,569 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 19:44:27,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 19:44:27,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 19:44:27,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 19:44:27,580 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 19:44:27,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 19:44:27,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 19:44:27,584 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 19:44:27,585 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 19:44:27,585 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 19:44:27,586 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 19:44:27,587 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 19:44:27,587 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 19:44:27,588 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 19:44:27,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 19:44:27,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 19:44:27,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 19:44:27,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 19:44:27,591 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 19:44:27,591 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 19:44:27,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 19:44:27,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 19:44:27,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 19:44:27,597 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de32c907-7055-43c1-b8c2-77d7983b6ba4/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 19:44:27,641 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 19:44:27,641 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 19:44:27,641 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 19:44:27,642 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 19:44:27,642 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 19:44:27,642 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 19:44:27,643 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 19:44:27,643 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 19:44:27,643 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 19:44:27,643 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 19:44:27,644 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 19:44:27,644 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 19:44:27,644 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 19:44:27,644 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 19:44:27,645 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 19:44:27,645 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 19:44:27,645 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 19:44:27,645 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 19:44:27,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 19:44:27,646 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 19:44:27,647 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 19:44:27,647 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 19:44:27,647 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 19:44:27,647 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 19:44:27,648 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 19:44:27,648 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 19:44:27,648 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 19:44:27,648 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 19:44:27,649 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 19:44:27,649 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 19:44:27,649 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 19:44:27,649 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 19:44:27,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:44:27,650 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 19:44:27,650 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 19:44:27,650 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 19:44:27,651 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 19:44:27,651 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 19:44:27,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 19:44:27,651 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 19:44:27,651 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 19:44:27,652 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_de32c907-7055-43c1-b8c2-77d7983b6ba4/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de32c907-7055-43c1-b8c2-77d7983b6ba4/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d604fdd8f7c4d34db0106d8a0ff422218ae80e9ee6eb03f691b84d2fcc8ad49f [2022-11-20 19:44:27,893 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 19:44:27,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 19:44:27,929 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 19:44:27,930 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 19:44:27,931 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 19:44:27,932 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de32c907-7055-43c1-b8c2-77d7983b6ba4/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/heap-data/packet_filter.i [2022-11-20 19:44:31,012 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 19:44:31,307 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 19:44:31,308 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de32c907-7055-43c1-b8c2-77d7983b6ba4/sv-benchmarks/c/heap-data/packet_filter.i [2022-11-20 19:44:31,319 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de32c907-7055-43c1-b8c2-77d7983b6ba4/bin/utaipan-6cKwYrpEi9/data/809fe5852/08af3837a5a5407b8c2e6956bc6c5b13/FLAGd78b5591b [2022-11-20 19:44:31,333 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de32c907-7055-43c1-b8c2-77d7983b6ba4/bin/utaipan-6cKwYrpEi9/data/809fe5852/08af3837a5a5407b8c2e6956bc6c5b13 [2022-11-20 19:44:31,335 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 19:44:31,337 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 19:44:31,338 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 19:44:31,338 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 19:44:31,342 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 19:44:31,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:44:31" (1/1) ... [2022-11-20 19:44:31,344 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2aacf860 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:44:31, skipping insertion in model container [2022-11-20 19:44:31,344 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:44:31" (1/1) ... [2022-11-20 19:44:31,352 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 19:44:31,385 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 19:44:31,695 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_de32c907-7055-43c1-b8c2-77d7983b6ba4/sv-benchmarks/c/heap-data/packet_filter.i[23925,23938] [2022-11-20 19:44:31,708 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_de32c907-7055-43c1-b8c2-77d7983b6ba4/sv-benchmarks/c/heap-data/packet_filter.i[24159,24172] [2022-11-20 19:44:31,717 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 19:44:31,735 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 19:44:31,802 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_de32c907-7055-43c1-b8c2-77d7983b6ba4/sv-benchmarks/c/heap-data/packet_filter.i[23925,23938] [2022-11-20 19:44:31,813 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_de32c907-7055-43c1-b8c2-77d7983b6ba4/sv-benchmarks/c/heap-data/packet_filter.i[24159,24172] [2022-11-20 19:44:31,818 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 19:44:31,851 INFO L208 MainTranslator]: Completed translation [2022-11-20 19:44:31,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:44:31 WrapperNode [2022-11-20 19:44:31,852 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 19:44:31,853 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 19:44:31,853 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 19:44:31,854 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 19:44:31,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:44:31" (1/1) ... [2022-11-20 19:44:31,886 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:44:31" (1/1) ... [2022-11-20 19:44:31,911 INFO L138 Inliner]: procedures = 130, calls = 86, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 156 [2022-11-20 19:44:31,912 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 19:44:31,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 19:44:31,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 19:44:31,913 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 19:44:31,923 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:44:31" (1/1) ... [2022-11-20 19:44:31,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:44:31" (1/1) ... [2022-11-20 19:44:31,927 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:44:31" (1/1) ... [2022-11-20 19:44:31,927 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:44:31" (1/1) ... [2022-11-20 19:44:31,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:44:31" (1/1) ... [2022-11-20 19:44:31,945 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:44:31" (1/1) ... [2022-11-20 19:44:31,947 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:44:31" (1/1) ... [2022-11-20 19:44:31,954 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:44:31" (1/1) ... [2022-11-20 19:44:31,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 19:44:31,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 19:44:31,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 19:44:31,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 19:44:31,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:44:31" (1/1) ... [2022-11-20 19:44:31,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:44:31,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de32c907-7055-43c1-b8c2-77d7983b6ba4/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:44:31,994 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de32c907-7055-43c1-b8c2-77d7983b6ba4/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 19:44:32,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de32c907-7055-43c1-b8c2-77d7983b6ba4/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 19:44:32,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 19:44:32,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 19:44:32,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 19:44:32,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 19:44:32,031 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_queue [2022-11-20 19:44:32,031 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_queue [2022-11-20 19:44:32,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 19:44:32,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 19:44:32,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 19:44:32,031 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_charp [2022-11-20 19:44:32,031 INFO L130 BoogieDeclarations]: Found specification of procedure send [2022-11-20 19:44:32,032 INFO L138 BoogieDeclarations]: Found implementation of procedure send [2022-11-20 19:44:32,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 19:44:32,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 19:44:32,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 19:44:32,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 19:44:32,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 19:44:32,235 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 19:44:32,237 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 19:44:32,786 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 19:44:32,867 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 19:44:32,867 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-20 19:44:32,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:44:32 BoogieIcfgContainer [2022-11-20 19:44:32,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 19:44:32,873 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 19:44:32,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 19:44:32,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 19:44:32,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:44:31" (1/3) ... [2022-11-20 19:44:32,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76046359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:44:32, skipping insertion in model container [2022-11-20 19:44:32,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:44:31" (2/3) ... [2022-11-20 19:44:32,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76046359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:44:32, skipping insertion in model container [2022-11-20 19:44:32,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:44:32" (3/3) ... [2022-11-20 19:44:32,880 INFO L112 eAbstractionObserver]: Analyzing ICFG packet_filter.i [2022-11-20 19:44:32,900 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 19:44:32,901 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 19:44:32,948 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 19:44:32,955 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;@212fb06, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 19:44:32,955 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-20 19:44:32,959 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 25 states have internal predecessors, (34), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-20 19:44:32,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 19:44:32,966 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:44:32,967 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 19:44:32,967 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:44:32,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:44:32,973 INFO L85 PathProgramCache]: Analyzing trace with hash 297298087, now seen corresponding path program 1 times [2022-11-20 19:44:32,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:44:32,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028205887] [2022-11-20 19:44:32,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:44:32,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:44:33,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:44:33,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:44:33,152 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:44:33,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028205887] [2022-11-20 19:44:33,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028205887] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:44:33,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:44:33,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 19:44:33,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105387391] [2022-11-20 19:44:33,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:44:33,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 19:44:33,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:44:33,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 19:44:33,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 19:44:33,252 INFO L87 Difference]: Start difference. First operand has 33 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 25 states have internal predecessors, (34), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:44:33,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:44:33,372 INFO L93 Difference]: Finished difference Result 51 states and 66 transitions. [2022-11-20 19:44:33,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 19:44:33,375 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-20 19:44:33,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:44:33,383 INFO L225 Difference]: With dead ends: 51 [2022-11-20 19:44:33,383 INFO L226 Difference]: Without dead ends: 32 [2022-11-20 19:44:33,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 19:44:33,391 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:44:33,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:44:33,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-20 19:44:33,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-11-20 19:44:33,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-20 19:44:33,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2022-11-20 19:44:33,433 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 6 [2022-11-20 19:44:33,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:44:33,434 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2022-11-20 19:44:33,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:44:33,434 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2022-11-20 19:44:33,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 19:44:33,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:44:33,436 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:44:33,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 19:44:33,437 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:44:33,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:44:33,438 INFO L85 PathProgramCache]: Analyzing trace with hash -350648386, now seen corresponding path program 1 times [2022-11-20 19:44:33,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:44:33,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997982573] [2022-11-20 19:44:33,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:44:33,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:44:33,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:44:33,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:44:33,727 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:44:33,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997982573] [2022-11-20 19:44:33,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997982573] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:44:33,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:44:33,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 19:44:33,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071934391] [2022-11-20 19:44:33,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:44:33,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 19:44:33,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:44:33,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 19:44:33,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:44:33,731 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:44:33,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:44:33,896 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2022-11-20 19:44:33,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 19:44:33,897 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-20 19:44:33,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:44:33,899 INFO L225 Difference]: With dead ends: 58 [2022-11-20 19:44:33,899 INFO L226 Difference]: Without dead ends: 42 [2022-11-20 19:44:33,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 19:44:33,901 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 19 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:44:33,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 76 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:44:33,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-20 19:44:33,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2022-11-20 19:44:33,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 28 states have internal predecessors, (35), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-20 19:44:33,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2022-11-20 19:44:33,912 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 7 [2022-11-20 19:44:33,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:44:33,913 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2022-11-20 19:44:33,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:44:33,913 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2022-11-20 19:44:33,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 19:44:33,914 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:44:33,914 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:44:33,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 19:44:33,915 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:44:33,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:44:33,916 INFO L85 PathProgramCache]: Analyzing trace with hash 2014810633, now seen corresponding path program 1 times [2022-11-20 19:44:33,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:44:33,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939726407] [2022-11-20 19:44:33,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:44:33,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:44:33,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:44:34,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:44:34,143 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:44:34,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939726407] [2022-11-20 19:44:34,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939726407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:44:34,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:44:34,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 19:44:34,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146944335] [2022-11-20 19:44:34,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:44:34,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 19:44:34,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:44:34,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 19:44:34,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:44:34,150 INFO L87 Difference]: Start difference. First operand 36 states and 45 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:44:34,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:44:34,310 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2022-11-20 19:44:34,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 19:44:34,311 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 19:44:34,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:44:34,312 INFO L225 Difference]: With dead ends: 46 [2022-11-20 19:44:34,312 INFO L226 Difference]: Without dead ends: 34 [2022-11-20 19:44:34,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 19:44:34,313 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 1 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:44:34,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 83 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:44:34,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-20 19:44:34,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-20 19:44:34,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 25 states have (on average 1.28) internal successors, (32), 26 states have internal predecessors, (32), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-20 19:44:34,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2022-11-20 19:44:34,321 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 8 [2022-11-20 19:44:34,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:44:34,321 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2022-11-20 19:44:34,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:44:34,322 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2022-11-20 19:44:34,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 19:44:34,323 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:44:34,323 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:44:34,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 19:44:34,323 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:44:34,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:44:34,324 INFO L85 PathProgramCache]: Analyzing trace with hash 898291988, now seen corresponding path program 1 times [2022-11-20 19:44:34,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:44:34,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935527010] [2022-11-20 19:44:34,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:44:34,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:44:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:44:34,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:44:34,819 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:44:34,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935527010] [2022-11-20 19:44:34,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935527010] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 19:44:34,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896305045] [2022-11-20 19:44:34,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:44:34,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:44:34,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de32c907-7055-43c1-b8c2-77d7983b6ba4/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:44:34,828 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de32c907-7055-43c1-b8c2-77d7983b6ba4/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:44:34,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de32c907-7055-43c1-b8c2-77d7983b6ba4/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 19:44:34,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:44:34,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-20 19:44:34,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:44:35,057 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 19:44:35,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 19 treesize of output 18 [2022-11-20 19:44:35,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:35,139 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 [2022-11-20 19:44:35,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:35,154 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 [2022-11-20 19:44:35,172 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-20 19:44:35,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-11-20 19:44:35,233 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 [2022-11-20 19:44:35,241 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 [2022-11-20 19:44:35,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:44:35,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:44:35,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:44:35,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896305045] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:44:35,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1950431776] [2022-11-20 19:44:35,520 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-20 19:44:35,520 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 19:44:35,524 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 19:44:35,529 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 19:44:35,529 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 19:44:35,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:35,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:35,626 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-20 19:44:35,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 53 [2022-11-20 19:44:35,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:35,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:35,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2022-11-20 19:44:35,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:35,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 41 [2022-11-20 19:44:35,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:35,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:35,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 42 [2022-11-20 19:44:36,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:36,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:36,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:36,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:36,226 INFO L321 Elim1Store]: treesize reduction 148, result has 18.2 percent of original size [2022-11-20 19:44:36,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 49 treesize of output 73 [2022-11-20 19:44:36,332 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-11-20 19:44:36,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 50 [2022-11-20 19:44:36,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:36,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:36,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:36,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:36,424 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-20 19:44:36,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 16 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 55 [2022-11-20 19:44:36,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:36,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:36,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:36,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:36,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:36,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:36,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:36,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 57 [2022-11-20 19:44:36,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:37,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 41 [2022-11-20 19:44:37,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:37,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:37,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 42 [2022-11-20 19:44:37,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:37,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:37,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 42 [2022-11-20 19:44:37,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:37,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:37,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:37,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:37,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:37,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:37,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:37,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:37,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:37,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:37,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:37,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 19 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 43 [2022-11-20 19:44:37,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:37,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:37,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:37,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:37,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:37,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:37,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:37,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:37,382 INFO L321 Elim1Store]: treesize reduction 64, result has 19.0 percent of original size [2022-11-20 19:44:37,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 18 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 65 [2022-11-20 19:44:37,556 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 19:44:38,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1950431776] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:44:38,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 19:44:38,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 4, 4] total 10 [2022-11-20 19:44:38,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333926787] [2022-11-20 19:44:38,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:44:38,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 19:44:38,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:44:38,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 19:44:38,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-20 19:44:38,762 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:44:39,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:44:39,017 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2022-11-20 19:44:39,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 19:44:39,018 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-20 19:44:39,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:44:39,019 INFO L225 Difference]: With dead ends: 62 [2022-11-20 19:44:39,019 INFO L226 Difference]: Without dead ends: 46 [2022-11-20 19:44:39,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-20 19:44:39,020 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 8 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 19:44:39,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 58 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 16 Unchecked, 0.2s Time] [2022-11-20 19:44:39,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-20 19:44:39,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2022-11-20 19:44:39,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 32 states have internal predecessors, (40), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-20 19:44:39,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2022-11-20 19:44:39,031 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 11 [2022-11-20 19:44:39,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:44:39,032 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2022-11-20 19:44:39,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:44:39,032 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2022-11-20 19:44:39,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 19:44:39,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:44:39,033 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:44:39,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de32c907-7055-43c1-b8c2-77d7983b6ba4/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 19:44:39,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de32c907-7055-43c1-b8c2-77d7983b6ba4/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:44:39,240 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:44:39,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:44:39,240 INFO L85 PathProgramCache]: Analyzing trace with hash 2077256563, now seen corresponding path program 1 times [2022-11-20 19:44:39,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:44:39,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403307722] [2022-11-20 19:44:39,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:44:39,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:44:39,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:44:39,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:44:39,586 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:44:39,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403307722] [2022-11-20 19:44:39,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403307722] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 19:44:39,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288235631] [2022-11-20 19:44:39,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:44:39,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:44:39,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de32c907-7055-43c1-b8c2-77d7983b6ba4/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:44:39,588 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de32c907-7055-43c1-b8c2-77d7983b6ba4/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:44:39,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de32c907-7055-43c1-b8c2-77d7983b6ba4/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 19:44:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:44:39,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-20 19:44:39,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:44:39,736 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 19:44:39,737 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-20 19:44:39,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:39,762 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 [2022-11-20 19:44:39,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:39,770 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 [2022-11-20 19:44:39,789 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-20 19:44:39,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-11-20 19:44:39,829 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 [2022-11-20 19:44:39,831 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 [2022-11-20 19:44:39,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:44:39,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:44:39,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:44:39,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288235631] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:44:39,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1794503938] [2022-11-20 19:44:39,998 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-20 19:44:39,998 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 19:44:39,999 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 19:44:39,999 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 19:44:39,999 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 19:44:40,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:40,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:40,090 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-20 19:44:40,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 53 [2022-11-20 19:44:40,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:40,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:40,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2022-11-20 19:44:40,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:40,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 41 [2022-11-20 19:44:40,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:40,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:40,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:40,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:40,547 INFO L321 Elim1Store]: treesize reduction 148, result has 18.2 percent of original size [2022-11-20 19:44:40,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 49 treesize of output 73 [2022-11-20 19:44:40,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:40,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:40,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 14 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 42 [2022-11-20 19:44:40,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:40,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:40,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 14 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 42 [2022-11-20 19:44:40,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:40,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:40,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:40,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:40,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:40,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:40,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:40,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 19 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 43 [2022-11-20 19:44:40,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:40,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:40,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:40,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:40,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:40,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:40,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:40,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 57 [2022-11-20 19:44:40,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:41,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 41 [2022-11-20 19:44:41,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:41,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:41,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:41,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:41,364 INFO L321 Elim1Store]: treesize reduction 148, result has 18.2 percent of original size [2022-11-20 19:44:41,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 49 treesize of output 73 [2022-11-20 19:44:41,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:41,458 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 19:44:41,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 46 [2022-11-20 19:44:41,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:41,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:41,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:41,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:41,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:41,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:41,524 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 19:44:41,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 18 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 47 [2022-11-20 19:44:41,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:41,588 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 19:44:41,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 46 [2022-11-20 19:44:41,833 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 19:44:43,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1794503938] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:44:43,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 19:44:43,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 4, 4] total 11 [2022-11-20 19:44:43,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282407523] [2022-11-20 19:44:43,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:44:43,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 19:44:43,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:44:43,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 19:44:43,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-11-20 19:44:43,358 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:44:43,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:44:43,589 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2022-11-20 19:44:43,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 19:44:43,589 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-20 19:44:43,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:44:43,590 INFO L225 Difference]: With dead ends: 50 [2022-11-20 19:44:43,590 INFO L226 Difference]: Without dead ends: 38 [2022-11-20 19:44:43,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-11-20 19:44:43,591 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 3 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 19:44:43,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 80 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 48 Unchecked, 0.2s Time] [2022-11-20 19:44:43,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-20 19:44:43,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2022-11-20 19:44:43,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 28 states have internal predecessors, (35), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-20 19:44:43,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2022-11-20 19:44:43,599 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 12 [2022-11-20 19:44:43,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:44:43,599 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2022-11-20 19:44:43,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:44:43,599 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2022-11-20 19:44:43,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 19:44:43,600 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:44:43,600 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:44:43,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de32c907-7055-43c1-b8c2-77d7983b6ba4/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 19:44:43,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de32c907-7055-43c1-b8c2-77d7983b6ba4/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:44:43,806 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:44:43,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:44:43,806 INFO L85 PathProgramCache]: Analyzing trace with hash -279614113, now seen corresponding path program 1 times [2022-11-20 19:44:43,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:44:43,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627404669] [2022-11-20 19:44:43,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:44:43,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:44:43,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:44:44,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:44:44,979 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:44:44,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627404669] [2022-11-20 19:44:44,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627404669] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 19:44:44,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994824457] [2022-11-20 19:44:44,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:44:44,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:44:44,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de32c907-7055-43c1-b8c2-77d7983b6ba4/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:44:44,992 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de32c907-7055-43c1-b8c2-77d7983b6ba4/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:44:45,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de32c907-7055-43c1-b8c2-77d7983b6ba4/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 19:44:45,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:44:45,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-20 19:44:45,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:44:45,245 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 21 treesize of output 9 [2022-11-20 19:44:45,338 INFO L321 Elim1Store]: treesize reduction 40, result has 42.9 percent of original size [2022-11-20 19:44:45,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 64 [2022-11-20 19:44:45,380 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-20 19:44:45,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-20 19:44:45,426 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-20 19:44:45,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-20 19:44:45,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 19:44:45,491 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-20 19:44:45,491 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 3 case distinctions, treesize of input 43 treesize of output 60 [2022-11-20 19:44:45,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 19:44:45,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-20 19:44:45,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 19:44:45,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 19:44:45,702 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 19:44:45,703 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 47 treesize of output 5 [2022-11-20 19:44:45,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 19:44:45,772 INFO L321 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2022-11-20 19:44:45,773 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 156 treesize of output 96 [2022-11-20 19:44:45,778 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 84 treesize of output 66 [2022-11-20 19:44:46,093 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 67 treesize of output 39 [2022-11-20 19:44:46,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:46,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:46,109 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 20 treesize of output 14 [2022-11-20 19:44:46,115 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 11 treesize of output 7 [2022-11-20 19:44:46,180 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 19:44:46,180 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 71 treesize of output 55 [2022-11-20 19:44:46,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:44:46,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:44:46,762 INFO L321 Elim1Store]: treesize reduction 41, result has 62.0 percent of original size [2022-11-20 19:44:46,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 7 case distinctions, treesize of input 115 treesize of output 91 [2022-11-20 19:44:46,788 INFO L321 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2022-11-20 19:44:46,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 case distinctions, treesize of input 93 treesize of output 77 [2022-11-20 19:44:46,799 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 23 treesize of output 19 [2022-11-20 19:44:46,984 INFO L321 Elim1Store]: treesize reduction 107, result has 0.9 percent of original size [2022-11-20 19:44:46,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 7 case distinctions, treesize of input 115 treesize of output 1 [2022-11-20 19:44:47,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:44:47,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994824457] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:44:47,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1347164105] [2022-11-20 19:44:47,104 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-20 19:44:47,105 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 19:44:47,105 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 19:44:47,105 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 19:44:47,105 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 19:44:47,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:47,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:47,169 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-20 19:44:47,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 53 [2022-11-20 19:44:47,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:47,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:47,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2022-11-20 19:44:47,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:47,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 41 [2022-11-20 19:44:47,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:47,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:47,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:47,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:47,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:47,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:47,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:47,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:47,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:47,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:47,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:47,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 19 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 43 [2022-11-20 19:44:47,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:47,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:47,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 42 [2022-11-20 19:44:47,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:47,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:47,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 42 [2022-11-20 19:44:47,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:47,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:47,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:47,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:47,661 INFO L321 Elim1Store]: treesize reduction 148, result has 18.2 percent of original size [2022-11-20 19:44:47,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 49 treesize of output 73 [2022-11-20 19:44:48,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:48,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:48,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:48,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:44:48,446 INFO L217 Elim1Store]: Index analysis took 119 ms [2022-11-20 19:45:17,536 WARN L233 SmtUtils]: Spent 28.85s on a formula simplification. DAG size of input: 272 DAG size of output: 179 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-20 19:45:17,538 INFO L321 Elim1Store]: treesize reduction 744, result has 48.6 percent of original size [2022-11-20 19:45:17,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 6 stores, 1 select indices, 1 select index equivalence classes, 12 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 42 case distinctions, treesize of input 17346246 treesize of output 2913182 [2022-11-20 19:45:29,580 WARN L233 SmtUtils]: Spent 12.04s on a formula simplification that was a NOOP. DAG size: 1409 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 19:45:41,092 WARN L233 SmtUtils]: Spent 10.90s on a formula simplification that was a NOOP. DAG size: 1404 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 19:45:41,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:45:41,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:45:41,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:45:41,834 INFO L217 Elim1Store]: Index analysis took 111 ms [2022-11-20 19:45:42,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 38 [2022-11-20 19:45:53,012 WARN L233 SmtUtils]: Spent 10.89s on a formula simplification that was a NOOP. DAG size: 1402 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 19:46:03,962 WARN L233 SmtUtils]: Spent 10.94s on a formula simplification that was a NOOP. DAG size: 1399 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 19:46:04,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:46:04,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:46:04,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:46:04,817 INFO L217 Elim1Store]: Index analysis took 131 ms [2022-11-20 19:46:05,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 43 [2022-11-20 19:46:15,993 WARN L233 SmtUtils]: Spent 10.84s on a formula simplification that was a NOOP. DAG size: 1401 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 19:46:26,953 WARN L233 SmtUtils]: Spent 10.94s on a formula simplification that was a NOOP. DAG size: 1393 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 19:46:27,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:46:27,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:46:27,559 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 23 treesize of output 17 [2022-11-20 19:46:38,444 WARN L233 SmtUtils]: Spent 10.88s on a formula simplification that was a NOOP. DAG size: 1392 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 19:47:00,728 WARN L233 SmtUtils]: Spent 10.91s on a formula simplification that was a NOOP. DAG size: 1381 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 19:47:01,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:47:01,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:47:01,383 INFO L217 Elim1Store]: Index analysis took 181 ms [2022-11-20 19:47:03,591 INFO L321 Elim1Store]: treesize reduction 84, result has 43.6 percent of original size [2022-11-20 19:47:03,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 4 case distinctions, treesize of input 46 treesize of output 77 [2022-11-20 19:47:14,486 WARN L233 SmtUtils]: Spent 10.89s on a formula simplification that was a NOOP. DAG size: 1386 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 19:47:36,072 WARN L233 SmtUtils]: Spent 10.85s on a formula simplification that was a NOOP. DAG size: 1371 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 19:47:36,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:47:36,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-11-20 19:47:47,611 WARN L233 SmtUtils]: Spent 11.00s on a formula simplification that was a NOOP. DAG size: 1371 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 19:48:09,767 WARN L233 SmtUtils]: Spent 10.96s on a formula simplification that was a NOOP. DAG size: 1364 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 19:48:20,963 WARN L233 SmtUtils]: Spent 10.86s on a formula simplification that was a NOOP. DAG size: 1360 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 19:48:21,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:48:21,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 22 [2022-11-20 19:48:33,169 WARN L233 SmtUtils]: Spent 11.55s on a formula simplification that was a NOOP. DAG size: 1356 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 19:48:45,910 WARN L233 SmtUtils]: Spent 12.73s on a formula simplification that was a NOOP. DAG size: 1350 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 19:48:46,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:48:47,493 INFO L321 Elim1Store]: treesize reduction 228, result has 50.1 percent of original size [2022-11-20 19:48:47,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 286 treesize of output 400 [2022-11-20 19:48:58,748 WARN L233 SmtUtils]: Spent 11.25s on a formula simplification that was a NOOP. DAG size: 1419 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 19:49:10,109 WARN L233 SmtUtils]: Spent 11.35s on a formula simplification that was a NOOP. DAG size: 1417 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 19:49:11,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:49:11,293 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 19:49:11,301 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 19:49:11,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 201 treesize of output 198 [2022-11-20 19:49:11,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:49:11,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:49:11,391 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 118 [2022-11-20 19:49:11,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:49:11,531 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 19:49:11,539 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 19:49:11,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 201 treesize of output 198 [2022-11-20 19:49:11,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:49:11,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:49:11,619 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 118 [2022-11-20 19:49:37,166 WARN L233 SmtUtils]: Spent 12.25s on a formula simplification that was a NOOP. DAG size: 1200 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 19:49:53,799 WARN L233 SmtUtils]: Spent 5.68s on a formula simplification that was a NOOP. DAG size: 933 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 19:52:21,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:52:21,245 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 19:52:21,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 121 [2022-11-20 19:52:21,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:52:21,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:52:21,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 30