./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b29c70-98d9-45f6-b454-2cff3152c475/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b29c70-98d9-45f6-b454-2cff3152c475/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b29c70-98d9-45f6-b454-2cff3152c475/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b29c70-98d9-45f6-b454-2cff3152c475/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b29c70-98d9-45f6-b454-2cff3152c475/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b29c70-98d9-45f6-b454-2cff3152c475/bin/utaipan-g80aRyZoba --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 64bit --witnessprinter.graph.data.programhash b83c28af83745ba79af1b1ebec4b495db7aa2efb3702685bbdc4b86421ef4c0a --- 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-b5237d8 [2022-11-22 00:34:52,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 00:34:52,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 00:34:52,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 00:34:52,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 00:34:52,977 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 00:34:52,980 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 00:34:53,011 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 00:34:53,012 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 00:34:53,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 00:34:53,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 00:34:53,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 00:34:53,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 00:34:53,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 00:34:53,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 00:34:53,024 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 00:34:53,026 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 00:34:53,033 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 00:34:53,035 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 00:34:53,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 00:34:53,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 00:34:53,043 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 00:34:53,044 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 00:34:53,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 00:34:53,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 00:34:53,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 00:34:53,054 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 00:34:53,055 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 00:34:53,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 00:34:53,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 00:34:53,057 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 00:34:53,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 00:34:53,058 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 00:34:53,059 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 00:34:53,060 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 00:34:53,060 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 00:34:53,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 00:34:53,061 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 00:34:53,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 00:34:53,063 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 00:34:53,064 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 00:34:53,069 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b29c70-98d9-45f6-b454-2cff3152c475/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 00:34:53,107 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 00:34:53,107 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 00:34:53,108 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 00:34:53,108 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 00:34:53,109 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 00:34:53,109 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 00:34:53,109 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 00:34:53,109 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 00:34:53,110 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 00:34:53,110 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 00:34:53,110 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 00:34:53,110 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 00:34:53,110 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 00:34:53,111 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 00:34:53,111 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 00:34:53,111 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 00:34:53,111 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 00:34:53,111 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 00:34:53,112 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 00:34:53,112 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 00:34:53,113 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 00:34:53,113 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 00:34:53,113 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 00:34:53,113 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 00:34:53,113 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 00:34:53,114 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 00:34:53,114 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 00:34:53,114 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 00:34:53,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 00:34:53,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:34:53,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 00:34:53,120 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 00:34:53,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 00:34:53,120 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 00:34:53,120 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 00:34:53,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 00:34:53,122 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 00:34:53,122 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 00:34:53,122 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_19b29c70-98d9-45f6-b454-2cff3152c475/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b29c70-98d9-45f6-b454-2cff3152c475/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b83c28af83745ba79af1b1ebec4b495db7aa2efb3702685bbdc4b86421ef4c0a [2022-11-22 00:34:53,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 00:34:53,458 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 00:34:53,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 00:34:53,462 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 00:34:53,462 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 00:34:53,464 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b29c70-98d9-45f6-b454-2cff3152c475/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-22 00:34:56,520 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 00:34:57,143 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 00:34:57,144 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b29c70-98d9-45f6-b454-2cff3152c475/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-22 00:34:57,193 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b29c70-98d9-45f6-b454-2cff3152c475/bin/utaipan-g80aRyZoba/data/67e54251f/23be7b344efe45fcb3e1cb8fd798db73/FLAGc86a223dc [2022-11-22 00:34:57,215 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b29c70-98d9-45f6-b454-2cff3152c475/bin/utaipan-g80aRyZoba/data/67e54251f/23be7b344efe45fcb3e1cb8fd798db73 [2022-11-22 00:34:57,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 00:34:57,221 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 00:34:57,223 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 00:34:57,223 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 00:34:57,227 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 00:34:57,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:34:57" (1/1) ... [2022-11-22 00:34:57,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5210b9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:34:57, skipping insertion in model container [2022-11-22 00:34:57,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:34:57" (1/1) ... [2022-11-22 00:34:57,237 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 00:34:57,369 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 00:34:58,938 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_19b29c70-98d9-45f6-b454-2cff3152c475/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point_ldv-val-v0.8.cil.out.i[216887,216900] [2022-11-22 00:34:58,977 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:34:59,003 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 00:34:59,462 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_19b29c70-98d9-45f6-b454-2cff3152c475/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point_ldv-val-v0.8.cil.out.i[216887,216900] [2022-11-22 00:34:59,469 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:34:59,594 INFO L208 MainTranslator]: Completed translation [2022-11-22 00:34:59,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:34:59 WrapperNode [2022-11-22 00:34:59,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 00:34:59,596 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 00:34:59,596 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 00:34:59,596 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 00:34:59,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:34:59" (1/1) ... [2022-11-22 00:34:59,687 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:34:59" (1/1) ... [2022-11-22 00:34:59,787 INFO L138 Inliner]: procedures = 187, calls = 873, calls flagged for inlining = 93, calls inlined = 91, statements flattened = 3213 [2022-11-22 00:34:59,787 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 00:34:59,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 00:34:59,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 00:34:59,788 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 00:34:59,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:34:59" (1/1) ... [2022-11-22 00:34:59,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:34:59" (1/1) ... [2022-11-22 00:34:59,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:34:59" (1/1) ... [2022-11-22 00:34:59,814 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:34:59" (1/1) ... [2022-11-22 00:34:59,897 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:34:59" (1/1) ... [2022-11-22 00:34:59,925 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:34:59" (1/1) ... [2022-11-22 00:34:59,952 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:34:59" (1/1) ... [2022-11-22 00:34:59,963 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:34:59" (1/1) ... [2022-11-22 00:34:59,994 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 00:34:59,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 00:34:59,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 00:34:59,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 00:34:59,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:34:59" (1/1) ... [2022-11-22 00:35:00,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:35:00,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b29c70-98d9-45f6-b454-2cff3152c475/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:35:00,035 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b29c70-98d9-45f6-b454-2cff3152c475/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 00:35:00,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b29c70-98d9-45f6-b454-2cff3152c475/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 00:35:00,085 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_nonpositive [2022-11-22 00:35:00,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_nonpositive [2022-11-22 00:35:00,085 INFO L130 BoogieDeclarations]: Found specification of procedure sl_tx_timeout [2022-11-22 00:35:00,086 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_tx_timeout [2022-11-22 00:35:00,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 00:35:00,086 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-22 00:35:00,086 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2022-11-22 00:35:00,086 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2022-11-22 00:35:00,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-22 00:35:00,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-22 00:35:00,087 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 00:35:00,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 00:35:00,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 00:35:00,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-22 00:35:00,088 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-22 00:35:00,088 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-22 00:35:00,088 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-22 00:35:00,088 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-22 00:35:00,088 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-22 00:35:00,088 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_free [2022-11-22 00:35:00,089 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_free [2022-11-22 00:35:00,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-22 00:35:00,089 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-22 00:35:00,089 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-22 00:35:00,089 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-22 00:35:00,090 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 00:35:00,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 00:35:00,090 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-22 00:35:00,091 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-22 00:35:00,091 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-11-22 00:35:00,091 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-11-22 00:35:00,092 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-22 00:35:00,092 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-22 00:35:00,092 INFO L130 BoogieDeclarations]: Found specification of procedure sl_free_bufs [2022-11-22 00:35:00,092 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_free_bufs [2022-11-22 00:35:00,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 00:35:00,092 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 00:35:00,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 00:35:00,093 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-22 00:35:00,093 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-22 00:35:00,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-22 00:35:00,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-22 00:35:00,093 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-22 00:35:00,093 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-22 00:35:00,094 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-22 00:35:00,094 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-22 00:35:00,094 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-22 00:35:00,094 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-22 00:35:00,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 00:35:00,095 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2022-11-22 00:35:00,095 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2022-11-22 00:35:00,095 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-22 00:35:00,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-22 00:35:00,096 INFO L130 BoogieDeclarations]: Found specification of procedure sl_bump [2022-11-22 00:35:00,097 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_bump [2022-11-22 00:35:00,097 INFO L130 BoogieDeclarations]: Found specification of procedure slip_ioctl [2022-11-22 00:35:00,097 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_ioctl [2022-11-22 00:35:00,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 00:35:00,098 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-22 00:35:00,098 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-22 00:35:00,098 INFO L130 BoogieDeclarations]: Found specification of procedure slip_close [2022-11-22 00:35:00,098 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_close [2022-11-22 00:35:00,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 00:35:00,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 00:35:00,099 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-22 00:35:00,099 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2022-11-22 00:35:00,099 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2022-11-22 00:35:00,099 INFO L130 BoogieDeclarations]: Found specification of procedure slip_compat_ioctl [2022-11-22 00:35:00,099 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_compat_ioctl [2022-11-22 00:35:00,099 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-22 00:35:00,099 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-22 00:35:00,100 INFO L130 BoogieDeclarations]: Found specification of procedure sl_get_stats64 [2022-11-22 00:35:00,100 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_get_stats64 [2022-11-22 00:35:00,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 00:35:00,101 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-22 00:35:00,132 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-22 00:35:00,132 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-22 00:35:00,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-22 00:35:00,132 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-22 00:35:00,132 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-22 00:35:00,132 INFO L130 BoogieDeclarations]: Found specification of procedure sl_ioctl [2022-11-22 00:35:00,133 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_ioctl [2022-11-22 00:35:00,133 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hangup [2022-11-22 00:35:00,133 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hangup [2022-11-22 00:35:00,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 00:35:00,133 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-11-22 00:35:00,133 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-11-22 00:35:00,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 00:35:00,133 INFO L130 BoogieDeclarations]: Found specification of procedure tty_devnum [2022-11-22 00:35:00,133 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_devnum [2022-11-22 00:35:00,134 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-22 00:35:00,134 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-22 00:35:00,134 INFO L130 BoogieDeclarations]: Found specification of procedure slip_hangup [2022-11-22 00:35:00,134 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_hangup [2022-11-22 00:35:00,134 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-22 00:35:00,134 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-22 00:35:00,134 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-22 00:35:00,134 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-22 00:35:00,134 INFO L130 BoogieDeclarations]: Found specification of procedure sl_change_mtu [2022-11-22 00:35:00,135 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_change_mtu [2022-11-22 00:35:00,135 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2022-11-22 00:35:00,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2022-11-22 00:35:00,135 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-22 00:35:00,135 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-22 00:35:00,135 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-22 00:35:00,135 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-22 00:35:00,135 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-22 00:35:00,135 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-22 00:35:00,135 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-22 00:35:00,136 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-22 00:35:00,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 00:35:00,136 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-11-22 00:35:00,136 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-11-22 00:35:00,136 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2022-11-22 00:35:00,136 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2022-11-22 00:35:00,136 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-22 00:35:00,136 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-22 00:35:00,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-22 00:35:00,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 00:35:00,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 00:35:00,137 INFO L130 BoogieDeclarations]: Found specification of procedure sl_unlock [2022-11-22 00:35:00,137 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_unlock [2022-11-22 00:35:00,137 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-11-22 00:35:00,137 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-11-22 00:35:00,772 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 00:35:00,777 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 00:35:01,031 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 00:35:03,834 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 00:35:05,161 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 00:35:05,161 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-22 00:35:05,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:35:05 BoogieIcfgContainer [2022-11-22 00:35:05,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 00:35:05,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 00:35:05,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 00:35:05,175 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 00:35:05,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:34:57" (1/3) ... [2022-11-22 00:35:05,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ec6dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:35:05, skipping insertion in model container [2022-11-22 00:35:05,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:34:59" (2/3) ... [2022-11-22 00:35:05,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ec6dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:35:05, skipping insertion in model container [2022-11-22 00:35:05,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:35:05" (3/3) ... [2022-11-22 00:35:05,181 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-22 00:35:05,202 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 00:35:05,202 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 00:35:05,282 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:35:05,290 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;@23e3765a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:35:05,290 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 00:35:05,298 INFO L276 IsEmpty]: Start isEmpty. Operand has 787 states, 497 states have (on average 1.3983903420523138) internal successors, (695), 529 states have internal predecessors, (695), 236 states have call successors, (236), 53 states have call predecessors, (236), 52 states have return successors, (231), 229 states have call predecessors, (231), 231 states have call successors, (231) [2022-11-22 00:35:05,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-22 00:35:05,317 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:35:05,318 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:35:05,319 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:35:05,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:35:05,324 INFO L85 PathProgramCache]: Analyzing trace with hash -2125175761, now seen corresponding path program 1 times [2022-11-22 00:35:05,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:35:05,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216667681] [2022-11-22 00:35:05,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:35:05,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:35:05,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:35:05,983 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2022-11-22 00:35:05,983 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:35:05,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216667681] [2022-11-22 00:35:05,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216667681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:35:05,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:35:05,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:35:05,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198802876] [2022-11-22 00:35:05,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:35:05,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:35:05,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:35:06,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:35:06,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:35:06,040 INFO L87 Difference]: Start difference. First operand has 787 states, 497 states have (on average 1.3983903420523138) internal successors, (695), 529 states have internal predecessors, (695), 236 states have call successors, (236), 53 states have call predecessors, (236), 52 states have return successors, (231), 229 states have call predecessors, (231), 231 states have call successors, (231) Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-22 00:35:08,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:10,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:11,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:35:11,089 INFO L93 Difference]: Finished difference Result 1987 states and 2907 transitions. [2022-11-22 00:35:11,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:35:11,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2022-11-22 00:35:11,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:35:11,115 INFO L225 Difference]: With dead ends: 1987 [2022-11-22 00:35:11,115 INFO L226 Difference]: Without dead ends: 1170 [2022-11-22 00:35:11,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:35:11,127 INFO L413 NwaCegarLoop]: 1152 mSDtfsCounter, 666 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 2103 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:35:11,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [666 Valid, 2103 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 305 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-11-22 00:35:11,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2022-11-22 00:35:11,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 1170. [2022-11-22 00:35:11,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1170 states, 737 states have (on average 1.367706919945726) internal successors, (1008), 770 states have internal predecessors, (1008), 341 states have call successors, (341), 91 states have call predecessors, (341), 91 states have return successors, (341), 338 states have call predecessors, (341), 341 states have call successors, (341) [2022-11-22 00:35:11,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 1690 transitions. [2022-11-22 00:35:11,379 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 1690 transitions. Word has length 124 [2022-11-22 00:35:11,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:35:11,381 INFO L495 AbstractCegarLoop]: Abstraction has 1170 states and 1690 transitions. [2022-11-22 00:35:11,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-22 00:35:11,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 1690 transitions. [2022-11-22 00:35:11,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-11-22 00:35:11,403 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:35:11,404 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:35:11,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 00:35:11,405 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:35:11,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:35:11,406 INFO L85 PathProgramCache]: Analyzing trace with hash -736166892, now seen corresponding path program 1 times [2022-11-22 00:35:11,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:35:11,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412207823] [2022-11-22 00:35:11,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:35:11,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:35:11,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:35:11,887 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2022-11-22 00:35:11,887 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:35:11,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412207823] [2022-11-22 00:35:11,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412207823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:35:11,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:35:11,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 00:35:11,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522697758] [2022-11-22 00:35:11,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:35:11,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:35:11,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:35:11,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:35:11,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:35:11,891 INFO L87 Difference]: Start difference. First operand 1170 states and 1690 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-22 00:35:13,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:15,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:35:15,060 INFO L93 Difference]: Finished difference Result 2304 states and 3330 transitions. [2022-11-22 00:35:15,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 00:35:15,063 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 170 [2022-11-22 00:35:15,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:35:15,070 INFO L225 Difference]: With dead ends: 2304 [2022-11-22 00:35:15,071 INFO L226 Difference]: Without dead ends: 1170 [2022-11-22 00:35:15,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:35:15,077 INFO L413 NwaCegarLoop]: 977 mSDtfsCounter, 1 mSDsluCounter, 1949 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2926 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:35:15,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2926 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-22 00:35:15,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2022-11-22 00:35:15,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 1170. [2022-11-22 00:35:15,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1170 states, 737 states have (on average 1.3649932157394844) internal successors, (1006), 770 states have internal predecessors, (1006), 341 states have call successors, (341), 91 states have call predecessors, (341), 91 states have return successors, (341), 338 states have call predecessors, (341), 341 states have call successors, (341) [2022-11-22 00:35:15,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 1688 transitions. [2022-11-22 00:35:15,194 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 1688 transitions. Word has length 170 [2022-11-22 00:35:15,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:35:15,197 INFO L495 AbstractCegarLoop]: Abstraction has 1170 states and 1688 transitions. [2022-11-22 00:35:15,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-22 00:35:15,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 1688 transitions. [2022-11-22 00:35:15,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-22 00:35:15,204 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:35:15,208 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:35:15,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 00:35:15,209 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:35:15,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:35:15,221 INFO L85 PathProgramCache]: Analyzing trace with hash -614769081, now seen corresponding path program 1 times [2022-11-22 00:35:15,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:35:15,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297013559] [2022-11-22 00:35:15,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:35:15,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:35:15,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:35:15,932 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2022-11-22 00:35:15,932 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:35:15,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297013559] [2022-11-22 00:35:15,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297013559] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:35:15,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:35:15,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 00:35:15,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079925299] [2022-11-22 00:35:15,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:35:15,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:35:15,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:35:15,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:35:15,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:35:15,939 INFO L87 Difference]: Start difference. First operand 1170 states and 1688 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-11-22 00:35:18,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:35:18,953 INFO L93 Difference]: Finished difference Result 1646 states and 2467 transitions. [2022-11-22 00:35:18,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 00:35:18,953 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 172 [2022-11-22 00:35:18,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:35:18,968 INFO L225 Difference]: With dead ends: 1646 [2022-11-22 00:35:18,968 INFO L226 Difference]: Without dead ends: 1644 [2022-11-22 00:35:18,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:35:18,975 INFO L413 NwaCegarLoop]: 1454 mSDtfsCounter, 607 mSDsluCounter, 2225 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 3679 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-22 00:35:18,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [638 Valid, 3679 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-22 00:35:18,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1644 states. [2022-11-22 00:35:19,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1644 to 1172. [2022-11-22 00:35:19,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 739 states have (on average 1.3640054127198917) internal successors, (1008), 772 states have internal predecessors, (1008), 341 states have call successors, (341), 91 states have call predecessors, (341), 91 states have return successors, (341), 338 states have call predecessors, (341), 341 states have call successors, (341) [2022-11-22 00:35:19,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1690 transitions. [2022-11-22 00:35:19,052 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1690 transitions. Word has length 172 [2022-11-22 00:35:19,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:35:19,053 INFO L495 AbstractCegarLoop]: Abstraction has 1172 states and 1690 transitions. [2022-11-22 00:35:19,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-11-22 00:35:19,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1690 transitions. [2022-11-22 00:35:19,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-11-22 00:35:19,059 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:35:19,059 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:35:19,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 00:35:19,060 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:35:19,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:35:19,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1741382129, now seen corresponding path program 1 times [2022-11-22 00:35:19,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:35:19,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818944082] [2022-11-22 00:35:19,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:35:19,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:35:19,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:35:19,708 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2022-11-22 00:35:19,708 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:35:19,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818944082] [2022-11-22 00:35:19,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818944082] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:35:19,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:35:19,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 00:35:19,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717226977] [2022-11-22 00:35:19,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:35:19,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:35:19,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:35:19,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:35:19,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:35:19,712 INFO L87 Difference]: Start difference. First operand 1172 states and 1690 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-22 00:35:21,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:24,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:35:24,221 INFO L93 Difference]: Finished difference Result 2780 states and 4105 transitions. [2022-11-22 00:35:24,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 00:35:24,221 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 180 [2022-11-22 00:35:24,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:35:24,232 INFO L225 Difference]: With dead ends: 2780 [2022-11-22 00:35:24,232 INFO L226 Difference]: Without dead ends: 1648 [2022-11-22 00:35:24,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:35:24,239 INFO L413 NwaCegarLoop]: 1273 mSDtfsCounter, 1574 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1675 SdHoareTripleChecker+Valid, 1798 SdHoareTripleChecker+Invalid, 948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:35:24,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1675 Valid, 1798 Invalid, 948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 913 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-22 00:35:24,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2022-11-22 00:35:24,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1173. [2022-11-22 00:35:24,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 740 states have (on average 1.3635135135135135) internal successors, (1009), 773 states have internal predecessors, (1009), 341 states have call successors, (341), 91 states have call predecessors, (341), 91 states have return successors, (341), 338 states have call predecessors, (341), 341 states have call successors, (341) [2022-11-22 00:35:24,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1691 transitions. [2022-11-22 00:35:24,411 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1691 transitions. Word has length 180 [2022-11-22 00:35:24,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:35:24,412 INFO L495 AbstractCegarLoop]: Abstraction has 1173 states and 1691 transitions. [2022-11-22 00:35:24,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-22 00:35:24,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1691 transitions. [2022-11-22 00:35:24,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-11-22 00:35:24,418 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:35:24,419 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:35:24,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 00:35:24,419 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:35:24,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:35:24,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1889083966, now seen corresponding path program 1 times [2022-11-22 00:35:24,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:35:24,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987926364] [2022-11-22 00:35:24,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:35:24,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:35:24,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:35:24,904 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2022-11-22 00:35:24,904 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:35:24,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987926364] [2022-11-22 00:35:24,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987926364] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:35:24,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:35:24,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:35:24,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209578074] [2022-11-22 00:35:24,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:35:24,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:35:24,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:35:24,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:35:24,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:35:24,907 INFO L87 Difference]: Start difference. First operand 1173 states and 1691 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-22 00:35:27,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:30,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:35:30,155 INFO L93 Difference]: Finished difference Result 2451 states and 3780 transitions. [2022-11-22 00:35:30,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-22 00:35:30,156 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 181 [2022-11-22 00:35:30,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:35:30,170 INFO L225 Difference]: With dead ends: 2451 [2022-11-22 00:35:30,170 INFO L226 Difference]: Without dead ends: 2449 [2022-11-22 00:35:30,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-22 00:35:30,172 INFO L413 NwaCegarLoop]: 1816 mSDtfsCounter, 1372 mSDsluCounter, 4303 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 6119 SdHoareTripleChecker+Invalid, 1107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-22 00:35:30,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 6119 Invalid, 1107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-22 00:35:30,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2449 states. [2022-11-22 00:35:30,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2449 to 1175. [2022-11-22 00:35:30,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1175 states, 741 states have (on average 1.3630229419703104) internal successors, (1010), 773 states have internal predecessors, (1010), 342 states have call successors, (342), 91 states have call predecessors, (342), 91 states have return successors, (342), 339 states have call predecessors, (342), 342 states have call successors, (342) [2022-11-22 00:35:30,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1694 transitions. [2022-11-22 00:35:30,289 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1694 transitions. Word has length 181 [2022-11-22 00:35:30,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:35:30,290 INFO L495 AbstractCegarLoop]: Abstraction has 1175 states and 1694 transitions. [2022-11-22 00:35:30,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-22 00:35:30,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1694 transitions. [2022-11-22 00:35:30,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-11-22 00:35:30,298 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:35:30,298 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:35:30,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 00:35:30,299 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:35:30,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:35:30,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1348573724, now seen corresponding path program 1 times [2022-11-22 00:35:30,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:35:30,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165346462] [2022-11-22 00:35:30,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:35:30,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:35:30,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:35:30,575 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2022-11-22 00:35:30,575 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:35:30,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165346462] [2022-11-22 00:35:30,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165346462] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:35:30,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:35:30,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:35:30,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674639599] [2022-11-22 00:35:30,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:35:30,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:35:30,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:35:30,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:35:30,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:35:30,578 INFO L87 Difference]: Start difference. First operand 1175 states and 1694 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-22 00:35:32,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:33,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:35:33,700 INFO L93 Difference]: Finished difference Result 2708 states and 3895 transitions. [2022-11-22 00:35:33,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:35:33,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 205 [2022-11-22 00:35:33,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:35:33,715 INFO L225 Difference]: With dead ends: 2708 [2022-11-22 00:35:33,715 INFO L226 Difference]: Without dead ends: 1573 [2022-11-22 00:35:33,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:35:33,721 INFO L413 NwaCegarLoop]: 1468 mSDtfsCounter, 1027 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1030 SdHoareTripleChecker+Valid, 2011 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:35:33,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1030 Valid, 2011 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 269 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2022-11-22 00:35:33,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2022-11-22 00:35:33,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1571. [2022-11-22 00:35:33,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571 states, 987 states have (on average 1.3576494427558257) internal successors, (1340), 1028 states have internal predecessors, (1340), 456 states have call successors, (456), 128 states have call predecessors, (456), 127 states have return successors, (456), 450 states have call predecessors, (456), 456 states have call successors, (456) [2022-11-22 00:35:33,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 2252 transitions. [2022-11-22 00:35:33,978 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 2252 transitions. Word has length 205 [2022-11-22 00:35:33,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:35:33,982 INFO L495 AbstractCegarLoop]: Abstraction has 1571 states and 2252 transitions. [2022-11-22 00:35:33,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-22 00:35:33,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 2252 transitions. [2022-11-22 00:35:33,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-11-22 00:35:33,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:35:33,992 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:35:33,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 00:35:33,993 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:35:33,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:35:33,993 INFO L85 PathProgramCache]: Analyzing trace with hash 564239138, now seen corresponding path program 1 times [2022-11-22 00:35:33,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:35:33,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385025255] [2022-11-22 00:35:33,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:35:33,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:35:34,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:35:34,519 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2022-11-22 00:35:34,523 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:35:34,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385025255] [2022-11-22 00:35:34,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385025255] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:35:34,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:35:34,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:35:34,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227757834] [2022-11-22 00:35:34,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:35:34,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:35:34,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:35:34,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:35:34,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:35:34,526 INFO L87 Difference]: Start difference. First operand 1571 states and 2252 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-22 00:35:37,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:39,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:43,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:35:43,582 INFO L93 Difference]: Finished difference Result 4137 states and 6229 transitions. [2022-11-22 00:35:43,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:35:43,583 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 207 [2022-11-22 00:35:43,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:35:43,604 INFO L225 Difference]: With dead ends: 4137 [2022-11-22 00:35:43,604 INFO L226 Difference]: Without dead ends: 3002 [2022-11-22 00:35:43,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-22 00:35:43,612 INFO L413 NwaCegarLoop]: 1624 mSDtfsCounter, 2337 mSDsluCounter, 2141 mSDsCounter, 0 mSdLazyCounter, 1653 mSolverCounterSat, 359 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2438 SdHoareTripleChecker+Valid, 3765 SdHoareTripleChecker+Invalid, 2014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 359 IncrementalHoareTripleChecker+Valid, 1653 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-11-22 00:35:43,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2438 Valid, 3765 Invalid, 2014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [359 Valid, 1653 Invalid, 2 Unknown, 0 Unchecked, 8.4s Time] [2022-11-22 00:35:43,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3002 states. [2022-11-22 00:35:43,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3002 to 1574. [2022-11-22 00:35:43,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1574 states, 990 states have (on average 1.3575757575757577) internal successors, (1344), 1031 states have internal predecessors, (1344), 456 states have call successors, (456), 128 states have call predecessors, (456), 127 states have return successors, (456), 450 states have call predecessors, (456), 456 states have call successors, (456) [2022-11-22 00:35:43,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 2256 transitions. [2022-11-22 00:35:43,880 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 2256 transitions. Word has length 207 [2022-11-22 00:35:43,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:35:43,881 INFO L495 AbstractCegarLoop]: Abstraction has 1574 states and 2256 transitions. [2022-11-22 00:35:43,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-22 00:35:43,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 2256 transitions. [2022-11-22 00:35:43,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-11-22 00:35:43,892 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:35:43,892 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:35:43,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 00:35:43,893 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:35:43,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:35:43,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1098921219, now seen corresponding path program 1 times [2022-11-22 00:35:43,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:35:43,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85868312] [2022-11-22 00:35:43,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:35:43,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:35:44,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:35:44,511 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2022-11-22 00:35:44,512 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:35:44,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85868312] [2022-11-22 00:35:44,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85868312] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:35:44,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624004478] [2022-11-22 00:35:44,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:35:44,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:35:44,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b29c70-98d9-45f6-b454-2cff3152c475/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:35:44,519 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b29c70-98d9-45f6-b454-2cff3152c475/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:35:44,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b29c70-98d9-45f6-b454-2cff3152c475/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 00:35:45,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:35:45,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 1863 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 00:35:45,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:35:45,877 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2022-11-22 00:35:45,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:35:46,140 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2022-11-22 00:35:46,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624004478] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:35:46,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1102441658] [2022-11-22 00:35:46,170 INFO L159 IcfgInterpreter]: Started Sifa with 117 locations of interest [2022-11-22 00:35:46,170 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:35:46,174 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:35:46,180 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:35:46,180 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:35:47,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:35:47,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:35:47,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:35:47,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:35:47,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:35:47,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:35:47,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:35:47,221 INFO L217 Elim1Store]: Index analysis took 287 ms [2022-11-22 00:35:56,268 WARN L233 SmtUtils]: Spent 9.02s on a formula simplification. DAG size of input: 823 DAG size of output: 348 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-22 00:35:56,274 INFO L321 Elim1Store]: treesize reduction 3807, result has 16.8 percent of original size [2022-11-22 00:35:56,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 27 select indices, 27 select index equivalence classes, 365 disjoint index pairs (out of 351 index pairs), introduced 27 new quantified variables, introduced 32 case distinctions, treesize of input 160 treesize of output 859 [2022-11-22 00:35:57,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:35:57,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:35:57,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:35:57,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:35:57,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:35:57,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:35:58,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:35:58,038 INFO L217 Elim1Store]: Index analysis took 959 ms [2022-11-22 00:36:13,507 WARN L233 SmtUtils]: Spent 15.44s on a formula simplification. DAG size of input: 1206 DAG size of output: 490 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-22 00:36:13,520 INFO L321 Elim1Store]: treesize reduction 5310, result has 14.3 percent of original size [2022-11-22 00:36:13,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 35 select indices, 35 select index equivalence classes, 392 disjoint index pairs (out of 595 index pairs), introduced 35 new quantified variables, introduced 241 case distinctions, treesize of input 284 treesize of output 1093 [2022-11-22 00:36:17,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-22 00:36:17,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 00:36:17,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-22 00:36:18,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:36:18,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:36:18,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:36:18,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:36:18,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:36:18,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:36:18,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:36:18,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 35 select indices, 35 select index equivalence classes, 595 disjoint index pairs (out of 595 index pairs), introduced 35 new quantified variables, introduced 0 case distinctions, treesize of input 176 treesize of output 106 [2022-11-22 00:36:18,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:36:18,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:36:18,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:36:18,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:36:18,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:36:18,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:36:18,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:36:18,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 34 select indices, 34 select index equivalence classes, 568 disjoint index pairs (out of 561 index pairs), introduced 34 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 103 [2022-11-22 00:36:18,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:36:18,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:36:18,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:36:18,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 22 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 49 [2022-11-22 00:36:22,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:36:22,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:36:22,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:36:22,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:36:22,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:36:22,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:36:22,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:36:22,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 34 select indices, 34 select index equivalence classes, 568 disjoint index pairs (out of 561 index pairs), introduced 34 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 103 [2022-11-22 00:36:23,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:36:23,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:36:23,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:36:23,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:36:23,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:36:23,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:36:23,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:36:23,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 35 select indices, 35 select index equivalence classes, 595 disjoint index pairs (out of 595 index pairs), introduced 35 new quantified variables, introduced 0 case distinctions, treesize of input 176 treesize of output 106 [2022-11-22 00:36:23,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:36:23,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:36:23,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:36:23,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 22 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 49 [2022-11-22 00:36:54,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 00:36:54,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 00:36:54,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-22 00:36:55,182 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:36:55,201 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:36:55,212 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:37:22,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-22 00:37:22,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 00:37:23,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 00:37:23,585 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:37:23,600 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:37:23,617 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:37:26,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 00:37:27,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 00:37:27,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-22 00:37:28,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 00:37:29,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 00:37:29,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-22 00:37:48,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 00:37:48,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 00:37:49,058 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:37:49,071 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:38:04,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 00:38:04,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 00:38:05,083 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:38:05,110 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:38:13,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-22 00:38:15,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-22 00:39:02,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 00:39:02,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 00:39:02,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-22 00:39:03,355 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:39:03,359 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:39:03,386 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:39:28,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-22 00:39:29,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 00:39:29,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 00:39:29,854 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:39:29,888 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:39:29,891 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:41:23,389 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_memset with input of size 570 for LOIs [2022-11-22 00:41:24,215 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_init_zalloc with input of size 136 for LOIs [2022-11-22 00:41:24,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 00:41:24,362 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-22 00:41:26,284 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.meminit with input of size 157 for LOIs [2022-11-22 00:41:26,324 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 164 for LOIs [2022-11-22 00:41:26,488 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_malloc with input of size 569 for LOIs [2022-11-22 00:41:29,196 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:41:43,568 WARN L233 SmtUtils]: Spent 14.24s on a formula simplification. DAG size of input: 1073 DAG size of output: 675 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:42:17,441 WARN L233 SmtUtils]: Spent 25.19s on a formula simplification. DAG size of input: 995 DAG size of output: 888 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:42:44,706 WARN L233 SmtUtils]: Spent 26.74s on a formula simplification. DAG size of input: 999 DAG size of output: 899 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:43:03,172 WARN L233 SmtUtils]: Spent 17.97s on a formula simplification. DAG size of input: 927 DAG size of output: 900 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:43:21,114 WARN L233 SmtUtils]: Spent 17.41s on a formula simplification. DAG size of input: 931 DAG size of output: 904 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:43:51,438 WARN L233 SmtUtils]: Spent 29.57s on a formula simplification. DAG size of input: 1036 DAG size of output: 934 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:44:20,905 WARN L233 SmtUtils]: Spent 28.75s on a formula simplification. DAG size of input: 1040 DAG size of output: 935 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:44:26,685 WARN L233 SmtUtils]: Spent 5.26s on a formula simplification. DAG size of input: 569 DAG size of output: 441 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:44:32,843 WARN L233 SmtUtils]: Spent 5.57s on a formula simplification. DAG size of input: 577 DAG size of output: 449 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:44:39,146 WARN L233 SmtUtils]: Spent 5.68s on a formula simplification. DAG size of input: 583 DAG size of output: 455 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:44:58,599 WARN L233 SmtUtils]: Spent 18.73s on a formula simplification. DAG size of input: 949 DAG size of output: 917 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:45:18,709 WARN L233 SmtUtils]: Spent 19.32s on a formula simplification. DAG size of input: 949 DAG size of output: 917 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:45:38,881 WARN L233 SmtUtils]: Spent 19.35s on a formula simplification. DAG size of input: 953 DAG size of output: 921 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:45:59,092 WARN L233 SmtUtils]: Spent 19.28s on a formula simplification. DAG size of input: 953 DAG size of output: 921 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:46:35,200 WARN L233 SmtUtils]: Spent 35.10s on a formula simplification. DAG size of input: 1072 DAG size of output: 978 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:47:09,469 WARN L233 SmtUtils]: Spent 33.22s on a formula simplification. DAG size of input: 1076 DAG size of output: 968 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:47:32,206 WARN L233 SmtUtils]: Spent 21.69s on a formula simplification. DAG size of input: 990 DAG size of output: 953 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:47:54,618 WARN L233 SmtUtils]: Spent 21.28s on a formula simplification. DAG size of input: 994 DAG size of output: 957 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:48:05,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1102441658] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:48:05,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:48:05,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [5, 4, 5] total 40 [2022-11-22 00:48:05,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344305211] [2022-11-22 00:48:05,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:48:05,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-22 00:48:05,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:48:05,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-22 00:48:05,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1379, Unknown=0, NotChecked=0, Total=1560 [2022-11-22 00:48:05,950 INFO L87 Difference]: Start difference. First operand 1574 states and 2256 transitions. Second operand has 32 states, 19 states have (on average 4.368421052631579) internal successors, (83), 17 states have internal predecessors, (83), 11 states have call successors, (25), 6 states have call predecessors, (25), 5 states have return successors, (25), 10 states have call predecessors, (25), 11 states have call successors, (25) [2022-11-22 00:48:33,635 WARN L233 SmtUtils]: Spent 20.38s on a formula simplification. DAG size of input: 960 DAG size of output: 935 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)