./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1ee1e4-dc62-45f1-b9c8-660cc618e297/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1ee1e4-dc62-45f1-b9c8-660cc618e297/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1ee1e4-dc62-45f1-b9c8-660cc618e297/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1ee1e4-dc62-45f1-b9c8-660cc618e297/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1ee1e4-dc62-45f1-b9c8-660cc618e297/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1ee1e4-dc62-45f1-b9c8-660cc618e297/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6560568361eacef24363f4e5a58f5226b4c8bc2851167e042d4f8ce61eb0aa48 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:56:49,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:56:49,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:56:49,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:56:49,033 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:56:49,035 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:56:49,037 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:56:49,040 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:56:49,042 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:56:49,044 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:56:49,045 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:56:49,047 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:56:49,047 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:56:49,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:56:49,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:56:49,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:56:49,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:56:49,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:56:49,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:56:49,060 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:56:49,062 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:56:49,064 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:56:49,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:56:49,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:56:49,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:56:49,071 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:56:49,071 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:56:49,072 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:56:49,073 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:56:49,074 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:56:49,075 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:56:49,076 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:56:49,077 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:56:49,078 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:56:49,079 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:56:49,080 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:56:49,081 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:56:49,081 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:56:49,082 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:56:49,083 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:56:49,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:56:49,089 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1ee1e4-dc62-45f1-b9c8-660cc618e297/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 01:56:49,131 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:56:49,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:56:49,133 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:56:49,133 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:56:49,140 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:56:49,141 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:56:49,141 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:56:49,142 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:56:49,142 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:56:49,142 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:56:49,143 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:56:49,143 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:56:49,144 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:56:49,144 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:56:49,144 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:56:49,144 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:56:49,145 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:56:49,145 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:56:49,146 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:56:49,146 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:56:49,146 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:56:49,146 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:56:49,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:56:49,147 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:56:49,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:56:49,147 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:56:49,149 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:56:49,149 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:56:49,149 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:56:49,149 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:56:49,150 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:56:49,150 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:56:49,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:56:49,151 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:56:49,151 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:56:49,151 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:56:49,151 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:56:49,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:56:49,152 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:56:49,152 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:56:49,152 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:56:49,152 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_7e1ee1e4-dc62-45f1-b9c8-660cc618e297/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1ee1e4-dc62-45f1-b9c8-660cc618e297/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6560568361eacef24363f4e5a58f5226b4c8bc2851167e042d4f8ce61eb0aa48 [2021-11-21 01:56:49,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:56:49,484 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:56:49,486 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:56:49,488 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:56:49,489 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:56:49,490 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1ee1e4-dc62-45f1-b9c8-660cc618e297/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-2.i [2021-11-21 01:56:49,560 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1ee1e4-dc62-45f1-b9c8-660cc618e297/bin/utaipan-TEXQjIfE4P/data/4203cbabd/b83ff7b322e94d84a322b4dfbea7000f/FLAG5c0736eb2 [2021-11-21 01:56:50,222 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:56:50,223 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1ee1e4-dc62-45f1-b9c8-660cc618e297/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-2.i [2021-11-21 01:56:50,248 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1ee1e4-dc62-45f1-b9c8-660cc618e297/bin/utaipan-TEXQjIfE4P/data/4203cbabd/b83ff7b322e94d84a322b4dfbea7000f/FLAG5c0736eb2 [2021-11-21 01:56:50,390 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1ee1e4-dc62-45f1-b9c8-660cc618e297/bin/utaipan-TEXQjIfE4P/data/4203cbabd/b83ff7b322e94d84a322b4dfbea7000f [2021-11-21 01:56:50,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:56:50,394 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:56:50,401 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:56:50,401 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:56:50,405 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:56:50,406 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:56:50" (1/1) ... [2021-11-21 01:56:50,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15ff6d8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:50, skipping insertion in model container [2021-11-21 01:56:50,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:56:50" (1/1) ... [2021-11-21 01:56:50,415 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:56:50,465 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:56:50,911 WARN L230 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_7e1ee1e4-dc62-45f1-b9c8-660cc618e297/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-2.i[33021,33034] [2021-11-21 01:56:51,056 WARN L230 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_7e1ee1e4-dc62-45f1-b9c8-660cc618e297/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-2.i[44590,44603] [2021-11-21 01:56:51,080 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:56:51,089 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:56:51,139 WARN L230 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_7e1ee1e4-dc62-45f1-b9c8-660cc618e297/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-2.i[33021,33034] [2021-11-21 01:56:51,212 WARN L230 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_7e1ee1e4-dc62-45f1-b9c8-660cc618e297/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-2.i[44590,44603] [2021-11-21 01:56:51,236 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:56:51,277 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:56:51,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:51 WrapperNode [2021-11-21 01:56:51,277 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:56:51,278 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:56:51,279 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:56:51,279 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:56:51,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:51" (1/1) ... [2021-11-21 01:56:51,320 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:51" (1/1) ... [2021-11-21 01:56:51,403 INFO L137 Inliner]: procedures = 177, calls = 336, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1181 [2021-11-21 01:56:51,403 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:56:51,404 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:56:51,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:56:51,405 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:56:51,413 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:51" (1/1) ... [2021-11-21 01:56:51,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:51" (1/1) ... [2021-11-21 01:56:51,429 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:51" (1/1) ... [2021-11-21 01:56:51,429 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:51" (1/1) ... [2021-11-21 01:56:51,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:51" (1/1) ... [2021-11-21 01:56:51,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:51" (1/1) ... [2021-11-21 01:56:51,528 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:51" (1/1) ... [2021-11-21 01:56:51,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:56:51,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:56:51,563 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:56:51,563 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:56:51,564 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:51" (1/1) ... [2021-11-21 01:56:51,573 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:56:51,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1ee1e4-dc62-45f1-b9c8-660cc618e297/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:56:51,606 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1ee1e4-dc62-45f1-b9c8-660cc618e297/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:56:51,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1ee1e4-dc62-45f1-b9c8-660cc618e297/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:56:51,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:56:51,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-21 01:56:51,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-21 01:56:51,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:56:51,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 01:56:51,657 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 01:56:51,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:56:51,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:56:51,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:56:51,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:56:51,658 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-21 01:56:51,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:56:51,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:56:51,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:56:51,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:56:51,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:56:51,922 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:56:51,924 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:56:53,193 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:56:53,617 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:56:53,617 INFO L301 CfgBuilder]: Removed 72 assume(true) statements. [2021-11-21 01:56:53,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:56:53 BoogieIcfgContainer [2021-11-21 01:56:53,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:56:53,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:56:53,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:56:53,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:56:53,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:56:50" (1/3) ... [2021-11-21 01:56:53,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68c8a83a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:56:53, skipping insertion in model container [2021-11-21 01:56:53,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:51" (2/3) ... [2021-11-21 01:56:53,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68c8a83a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:56:53, skipping insertion in model container [2021-11-21 01:56:53,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:56:53" (3/3) ... [2021-11-21 01:56:53,652 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test3-2.i [2021-11-21 01:56:53,660 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:56:53,660 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-21 01:56:53,709 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:56:53,716 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:56:53,716 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-21 01:56:53,738 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 124 states have (on average 1.7983870967741935) internal successors, (223), 131 states have internal predecessors, (223), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 01:56:53,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-21 01:56:53,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:56:53,744 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:56:53,744 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:56:53,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:56:53,750 INFO L85 PathProgramCache]: Analyzing trace with hash 2145808350, now seen corresponding path program 1 times [2021-11-21 01:56:53,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:56:53,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742254285] [2021-11-21 01:56:53,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:56:53,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:56:53,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:56:53,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:56:53,918 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:56:53,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742254285] [2021-11-21 01:56:53,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742254285] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:56:53,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:56:53,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:56:53,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698299991] [2021-11-21 01:56:53,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:56:53,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-21 01:56:53,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:56:53,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-21 01:56:53,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:56:53,957 INFO L87 Difference]: Start difference. First operand has 137 states, 124 states have (on average 1.7983870967741935) internal successors, (223), 131 states have internal predecessors, (223), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:56:54,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:56:54,481 INFO L93 Difference]: Finished difference Result 273 states and 482 transitions. [2021-11-21 01:56:54,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 01:56:54,493 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-21 01:56:54,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:56:54,503 INFO L225 Difference]: With dead ends: 273 [2021-11-21 01:56:54,503 INFO L226 Difference]: Without dead ends: 122 [2021-11-21 01:56:54,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:56:54,510 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:56:54,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 144 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 01:56:54,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-11-21 01:56:54,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-11-21 01:56:54,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 110 states have (on average 1.2181818181818183) internal successors, (134), 116 states have internal predecessors, (134), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 01:56:54,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 150 transitions. [2021-11-21 01:56:54,557 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 150 transitions. Word has length 8 [2021-11-21 01:56:54,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:56:54,558 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 150 transitions. [2021-11-21 01:56:54,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:56:54,558 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 150 transitions. [2021-11-21 01:56:54,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-21 01:56:54,559 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:56:54,560 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:56:54,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:56:54,560 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:56:54,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:56:54,561 INFO L85 PathProgramCache]: Analyzing trace with hash 131240621, now seen corresponding path program 1 times [2021-11-21 01:56:54,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:56:54,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143855308] [2021-11-21 01:56:54,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:56:54,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:56:54,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:56:54,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:56:54,665 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:56:54,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143855308] [2021-11-21 01:56:54,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143855308] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:56:54,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:56:54,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:56:54,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533921924] [2021-11-21 01:56:54,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:56:54,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:56:54,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:56:54,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:56:54,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:56:54,669 INFO L87 Difference]: Start difference. First operand 122 states and 150 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:56:56,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:56:56,467 INFO L93 Difference]: Finished difference Result 258 states and 326 transitions. [2021-11-21 01:56:56,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:56:56,478 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-21 01:56:56,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:56:56,481 INFO L225 Difference]: With dead ends: 258 [2021-11-21 01:56:56,481 INFO L226 Difference]: Without dead ends: 189 [2021-11-21 01:56:56,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:56:56,484 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 73 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:56:56,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 359 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-21 01:56:56,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-11-21 01:56:56,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 124. [2021-11-21 01:56:56,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 112 states have (on average 1.2142857142857142) internal successors, (136), 118 states have internal predecessors, (136), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 01:56:56,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 152 transitions. [2021-11-21 01:56:56,507 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 152 transitions. Word has length 13 [2021-11-21 01:56:56,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:56:56,507 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 152 transitions. [2021-11-21 01:56:56,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:56:56,507 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 152 transitions. [2021-11-21 01:56:56,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-21 01:56:56,509 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:56:56,509 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 01:56:56,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:56:56,510 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:56:56,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:56:56,511 INFO L85 PathProgramCache]: Analyzing trace with hash 993801336, now seen corresponding path program 1 times [2021-11-21 01:56:56,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:56:56,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140429370] [2021-11-21 01:56:56,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:56:56,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:56:56,558 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:56:56,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1342933990] [2021-11-21 01:56:56,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:56:56,560 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:56:56,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1ee1e4-dc62-45f1-b9c8-660cc618e297/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:56:56,562 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1ee1e4-dc62-45f1-b9c8-660cc618e297/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:56:56,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1ee1e4-dc62-45f1-b9c8-660cc618e297/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:56:56,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:56:56,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:56:56,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:56:57,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:56:57,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:56:57,128 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:56:57,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140429370] [2021-11-21 01:56:57,129 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:56:57,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342933990] [2021-11-21 01:56:57,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342933990] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:56:57,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:56:57,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:56:57,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656724217] [2021-11-21 01:56:57,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:56:57,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:56:57,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:56:57,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:56:57,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:56:57,137 INFO L87 Difference]: Start difference. First operand 124 states and 152 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:56:57,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:56:57,900 INFO L93 Difference]: Finished difference Result 304 states and 377 transitions. [2021-11-21 01:56:57,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:56:57,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-21 01:56:57,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:56:57,910 INFO L225 Difference]: With dead ends: 304 [2021-11-21 01:56:57,911 INFO L226 Difference]: Without dead ends: 183 [2021-11-21 01:56:57,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:56:57,913 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 58 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:56:57,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 280 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-21 01:56:57,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-11-21 01:56:57,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 167. [2021-11-21 01:56:57,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 155 states have (on average 1.1935483870967742) internal successors, (185), 161 states have internal predecessors, (185), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 01:56:57,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 201 transitions. [2021-11-21 01:56:57,932 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 201 transitions. Word has length 37 [2021-11-21 01:56:57,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:56:57,933 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 201 transitions. [2021-11-21 01:56:57,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:56:57,933 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 201 transitions. [2021-11-21 01:56:57,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-21 01:56:57,935 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:56:57,935 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:56:57,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1ee1e4-dc62-45f1-b9c8-660cc618e297/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:56:58,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1ee1e4-dc62-45f1-b9c8-660cc618e297/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:56:58,149 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:56:58,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:56:58,149 INFO L85 PathProgramCache]: Analyzing trace with hash 237821332, now seen corresponding path program 1 times [2021-11-21 01:56:58,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:56:58,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514735991] [2021-11-21 01:56:58,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:56:58,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:56:58,171 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:56:58,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [681548771] [2021-11-21 01:56:58,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:56:58,172 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:56:58,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1ee1e4-dc62-45f1-b9c8-660cc618e297/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:56:58,173 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1ee1e4-dc62-45f1-b9c8-660cc618e297/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:56:58,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1ee1e4-dc62-45f1-b9c8-660cc618e297/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 01:56:58,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:56:58,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:56:58,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:56:58,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2021-11-21 01:56:58,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-21 01:56:58,572 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-21 01:56:58,572 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:56:58,573 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:56:58,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514735991] [2021-11-21 01:56:58,573 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:56:58,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681548771] [2021-11-21 01:56:58,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681548771] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:56:58,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:56:58,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:56:58,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465107332] [2021-11-21 01:56:58,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:56:58,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:56:58,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:56:58,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:56:58,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:56:58,576 INFO L87 Difference]: Start difference. First operand 167 states and 201 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 01:57:01,062 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:57:01,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:57:01,063 INFO L93 Difference]: Finished difference Result 231 states and 285 transitions. [2021-11-21 01:57:01,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:57:01,085 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 50 [2021-11-21 01:57:01,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:57:01,087 INFO L225 Difference]: With dead ends: 231 [2021-11-21 01:57:01,087 INFO L226 Difference]: Without dead ends: 212 [2021-11-21 01:57:01,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:57:01,089 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 58 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:57:01,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 354 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-21 01:57:01,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-21 01:57:01,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 169. [2021-11-21 01:57:01,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 157 states have (on average 1.1910828025477707) internal successors, (187), 163 states have internal predecessors, (187), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 01:57:01,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 203 transitions. [2021-11-21 01:57:01,108 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 203 transitions. Word has length 50 [2021-11-21 01:57:01,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:57:01,109 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 203 transitions. [2021-11-21 01:57:01,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 01:57:01,110 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 203 transitions. [2021-11-21 01:57:01,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-21 01:57:01,112 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:57:01,113 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:57:01,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1ee1e4-dc62-45f1-b9c8-660cc618e297/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:57:01,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1ee1e4-dc62-45f1-b9c8-660cc618e297/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:57:01,336 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:57:01,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:57:01,337 INFO L85 PathProgramCache]: Analyzing trace with hash 375836451, now seen corresponding path program 1 times [2021-11-21 01:57:01,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:57:01,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471894143] [2021-11-21 01:57:01,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:57:01,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:57:01,372 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:57:01,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [714572341] [2021-11-21 01:57:01,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:57:01,374 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:57:01,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1ee1e4-dc62-45f1-b9c8-660cc618e297/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:57:01,375 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1ee1e4-dc62-45f1-b9c8-660cc618e297/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:57:01,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1ee1e4-dc62-45f1-b9c8-660cc618e297/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 01:57:01,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:57:01,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:57:01,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:57:01,834 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 01:57:01,834 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:57:01,834 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:57:01,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471894143] [2021-11-21 01:57:01,835 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:57:01,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714572341] [2021-11-21 01:57:01,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714572341] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:57:01,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:57:01,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:57:01,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812460362] [2021-11-21 01:57:01,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:57:01,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:57:01,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:57:01,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:57:01,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:57:01,837 INFO L87 Difference]: Start difference. First operand 169 states and 203 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 01:57:02,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:57:02,756 INFO L93 Difference]: Finished difference Result 395 states and 492 transitions. [2021-11-21 01:57:02,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:57:02,756 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2021-11-21 01:57:02,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:57:02,759 INFO L225 Difference]: With dead ends: 395 [2021-11-21 01:57:02,759 INFO L226 Difference]: Without dead ends: 242 [2021-11-21 01:57:02,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:57:02,761 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 257 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:57:02,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 296 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-21 01:57:02,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-11-21 01:57:02,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 214. [2021-11-21 01:57:02,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 202 states have (on average 1.193069306930693) internal successors, (241), 208 states have internal predecessors, (241), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 01:57:02,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 257 transitions. [2021-11-21 01:57:02,783 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 257 transitions. Word has length 57 [2021-11-21 01:57:02,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:57:02,784 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 257 transitions. [2021-11-21 01:57:02,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 01:57:02,784 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 257 transitions. [2021-11-21 01:57:02,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-21 01:57:02,787 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:57:02,787 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:57:02,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1ee1e4-dc62-45f1-b9c8-660cc618e297/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 01:57:03,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1ee1e4-dc62-45f1-b9c8-660cc618e297/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:57:03,009 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:57:03,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:57:03,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1459918940, now seen corresponding path program 1 times [2021-11-21 01:57:03,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:57:03,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813096000] [2021-11-21 01:57:03,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:57:03,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:57:03,046 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:57:03,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1392791305] [2021-11-21 01:57:03,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:57:03,056 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:57:03,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1ee1e4-dc62-45f1-b9c8-660cc618e297/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:57:03,057 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1ee1e4-dc62-45f1-b9c8-660cc618e297/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:57:03,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1ee1e4-dc62-45f1-b9c8-660cc618e297/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 01:57:03,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:57:03,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:57:03,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:57:03,996 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:57:03,996 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:57:03,997 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:57:03,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813096000] [2021-11-21 01:57:03,997 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:57:03,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392791305] [2021-11-21 01:57:03,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392791305] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:57:03,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:57:03,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:57:03,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755372895] [2021-11-21 01:57:03,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:57:03,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:57:03,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:57:03,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:57:04,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:57:04,000 INFO L87 Difference]: Start difference. First operand 214 states and 257 transitions. Second operand has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 01:57:06,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:57:06,210 INFO L93 Difference]: Finished difference Result 411 states and 498 transitions. [2021-11-21 01:57:06,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:57:06,217 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 64 [2021-11-21 01:57:06,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:57:06,219 INFO L225 Difference]: With dead ends: 411 [2021-11-21 01:57:06,220 INFO L226 Difference]: Without dead ends: 216 [2021-11-21 01:57:06,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:57:06,221 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 1 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:57:06,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 389 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-21 01:57:06,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-21 01:57:06,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-11-21 01:57:06,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 203 states have (on average 1.1970443349753694) internal successors, (243), 210 states have internal predecessors, (243), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-21 01:57:06,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 260 transitions. [2021-11-21 01:57:06,241 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 260 transitions. Word has length 64 [2021-11-21 01:57:06,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:57:06,242 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 260 transitions. [2021-11-21 01:57:06,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 01:57:06,242 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 260 transitions. [2021-11-21 01:57:06,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-21 01:57:06,245 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:57:06,245 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 01:57:06,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1ee1e4-dc62-45f1-b9c8-660cc618e297/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 01:57:06,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1ee1e4-dc62-45f1-b9c8-660cc618e297/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:57:06,460 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:57:06,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:57:06,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1243076896, now seen corresponding path program 1 times [2021-11-21 01:57:06,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:57:06,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305844445] [2021-11-21 01:57:06,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:57:06,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:57:06,496 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:57:06,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1306516485] [2021-11-21 01:57:06,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:57:06,501 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:57:06,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1ee1e4-dc62-45f1-b9c8-660cc618e297/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:57:06,504 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1ee1e4-dc62-45f1-b9c8-660cc618e297/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:57:06,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1ee1e4-dc62-45f1-b9c8-660cc618e297/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 01:57:14,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:57:14,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-21 01:57:14,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:57:14,592 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 01:57:14,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:57:14,842 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 01:57:14,842 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:57:14,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305844445] [2021-11-21 01:57:14,842 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:57:14,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306516485] [2021-11-21 01:57:14,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306516485] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:57:14,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1081589358] [2021-11-21 01:57:14,872 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2021-11-21 01:57:14,872 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:57:14,885 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:57:14,890 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:57:14,891 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:57:15,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:57:15,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:57:15,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:15,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-21 01:57:15,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:15,080 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 01:57:15,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-21 01:57:15,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:15,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:15,121 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:57:15,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 01:57:15,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:15,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-21 01:57:15,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:15,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:15,309 INFO L354 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2021-11-21 01:57:15,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 38 [2021-11-21 01:57:15,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:15,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:15,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:15,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:15,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:15,372 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-21 01:57:15,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 53 [2021-11-21 01:57:15,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:15,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:15,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:15,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:15,474 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-21 01:57:15,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2021-11-21 01:57:15,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:15,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-21 01:57:17,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2021-11-21 01:57:17,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2021-11-21 01:57:17,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 77 [2021-11-21 01:57:17,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 76 [2021-11-21 01:57:17,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2021-11-21 01:57:17,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2021-11-21 01:57:17,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 98 [2021-11-21 01:57:17,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 79 [2021-11-21 01:57:17,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,650 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:57:17,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 89 treesize of output 79 [2021-11-21 01:57:17,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2021-11-21 01:57:17,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 115 [2021-11-21 01:57:17,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,873 INFO L354 Elim1Store]: treesize reduction 194, result has 22.4 percent of original size [2021-11-21 01:57:17,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 127 treesize of output 163 [2021-11-21 01:57:17,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:17,949 INFO L354 Elim1Store]: treesize reduction 120, result has 14.9 percent of original size [2021-11-21 01:57:17,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 145 treesize of output 156 [2021-11-21 01:57:18,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 12 [2021-11-21 01:57:18,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 10 [2021-11-21 01:57:18,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 10 [2021-11-21 01:57:18,692 INFO L354 Elim1Store]: treesize reduction 34, result has 22.7 percent of original size [2021-11-21 01:57:18,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 98 treesize of output 97 [2021-11-21 01:57:18,714 INFO L354 Elim1Store]: treesize reduction 32, result has 23.8 percent of original size [2021-11-21 01:57:18,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 93 [2021-11-21 01:57:18,739 INFO L354 Elim1Store]: treesize reduction 32, result has 23.8 percent of original size [2021-11-21 01:57:18,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 89 [2021-11-21 01:57:18,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 10 [2021-11-21 01:57:18,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 12 [2021-11-21 01:57:18,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 10 [2021-11-21 01:57:18,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:18,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:18,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:18,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:18,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:18,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:18,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:18,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:18,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:18,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:18,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 22 [2021-11-21 01:57:18,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:18,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:18,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:18,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:18,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:18,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:18,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 26 [2021-11-21 01:57:18,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:18,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:18,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:18,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:18,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:18,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:18,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2021-11-21 01:57:19,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:19,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:19,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:19,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:19,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:19,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:19,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:19,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:19,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:19,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:19,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 22 [2021-11-21 01:57:19,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:19,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:19,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:19,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:19,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:19,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:19,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2021-11-21 01:57:19,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:19,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:19,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:19,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:19,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:19,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:19,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 26 [2021-11-21 01:57:28,698 WARN L227 SmtUtils]: Spent 9.16s on a formula simplification. DAG size of input: 66 DAG size of output: 32 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 01:57:28,699 INFO L354 Elim1Store]: treesize reduction 348, result has 15.7 percent of original size [2021-11-21 01:57:28,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 2847 treesize of output 2324 [2021-11-21 01:57:28,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:39,284 WARN L227 SmtUtils]: Spent 10.51s on a formula simplification. DAG size of input: 90 DAG size of output: 46 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 01:57:39,285 INFO L354 Elim1Store]: treesize reduction 262, result has 32.6 percent of original size [2021-11-21 01:57:39,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 2948 treesize of output 2666 [2021-11-21 01:57:52,905 WARN L227 SmtUtils]: Spent 13.50s on a formula simplification. DAG size of input: 252 DAG size of output: 143 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 01:57:52,906 INFO L354 Elim1Store]: treesize reduction 2662, result has 30.3 percent of original size [2021-11-21 01:57:52,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 16 case distinctions, treesize of input 2852 treesize of output 2682 [2021-11-21 01:57:53,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:53,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:53,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:54,930 INFO L354 Elim1Store]: treesize reduction 188, result has 20.0 percent of original size [2021-11-21 01:57:54,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 25950 treesize of output 25981 [2021-11-21 01:57:55,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:55,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:55,962 INFO L354 Elim1Store]: treesize reduction 126, result has 17.1 percent of original size [2021-11-21 01:57:55,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 25960 treesize of output 25974 [2021-11-21 01:57:58,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:58,387 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-11-21 01:57:58,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 20 [2021-11-21 01:57:59,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:57:59,619 INFO L354 Elim1Store]: treesize reduction 11, result has 56.0 percent of original size [2021-11-21 01:57:59,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 44 [2021-11-21 01:58:00,537 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:58:00,914 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:58:01,539 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:58:01,821 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:58:02,290 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:58:02,493 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:58:03,000 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:58:03,162 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:58:05,004 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:58:05,262 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:58:05,747 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:58:05,974 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:58:06,312 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:58:06,450 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:58:06,837 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:58:07,037 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:58:08,898 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:58:08,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:08,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:08,925 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:58:08,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:08,947 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:58:08,948 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:58:08,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:08,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:09,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:09,013 INFO L244 Elim1Store]: Index analysis took 115 ms [2021-11-21 01:58:09,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 1252 treesize of output 798 [2021-11-21 01:58:09,834 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:58:11,267 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:58:11,635 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:58:12,361 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:58:12,699 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:58:13,465 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:58:13,717 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:58:16,095 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:58:16,235 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:58:16,432 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:58:16,541 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:58:16,881 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:58:17,170 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:58:17,451 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:58:17,664 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:58:17,844 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:58:26,031 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-11-21 01:58:26,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 4286 treesize of output 4294 [2021-11-21 01:58:26,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:26,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 20 [2021-11-21 01:58:26,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:26,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 15 [2021-11-21 01:58:27,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:27,894 INFO L354 Elim1Store]: treesize reduction 17, result has 37.0 percent of original size [2021-11-21 01:58:27,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 32 [2021-11-21 01:58:28,303 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:58:39,354 INFO L190 IndexEqualityManager]: detected not equals via solver