./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-properties/list_search-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cced3cc-6c78-4e7c-9088-db9cf83599c1/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cced3cc-6c78-4e7c-9088-db9cf83599c1/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cced3cc-6c78-4e7c-9088-db9cf83599c1/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cced3cc-6c78-4e7c-9088-db9cf83599c1/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-properties/list_search-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cced3cc-6c78-4e7c-9088-db9cf83599c1/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cced3cc-6c78-4e7c-9088-db9cf83599c1/bin/utaipan-gh47qXpMRh --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 b1ea7ddff382751fa0e11562333bdb4981cac7bdbf1d356a007804e7e2e5a289 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 11:25:17,210 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 11:25:17,212 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 11:25:17,230 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 11:25:17,230 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 11:25:17,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 11:25:17,232 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 11:25:17,234 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 11:25:17,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 11:25:17,236 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 11:25:17,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 11:25:17,238 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 11:25:17,238 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 11:25:17,239 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 11:25:17,240 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 11:25:17,241 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 11:25:17,242 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 11:25:17,243 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 11:25:17,244 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 11:25:17,246 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 11:25:17,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 11:25:17,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 11:25:17,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 11:25:17,250 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 11:25:17,253 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 11:25:17,253 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 11:25:17,254 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 11:25:17,254 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 11:25:17,255 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 11:25:17,256 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 11:25:17,256 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 11:25:17,257 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 11:25:17,257 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 11:25:17,258 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 11:25:17,259 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 11:25:17,259 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 11:25:17,259 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 11:25:17,260 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 11:25:17,260 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 11:25:17,261 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 11:25:17,261 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 11:25:17,262 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cced3cc-6c78-4e7c-9088-db9cf83599c1/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 11:25:17,281 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 11:25:17,281 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 11:25:17,282 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 11:25:17,282 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 11:25:17,282 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 11:25:17,282 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 11:25:17,283 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 11:25:17,283 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 11:25:17,283 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 11:25:17,283 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 11:25:17,283 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 11:25:17,284 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 11:25:17,284 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 11:25:17,284 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 11:25:17,284 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 11:25:17,284 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 11:25:17,284 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 11:25:17,285 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 11:25:17,285 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 11:25:17,285 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 11:25:17,286 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 11:25:17,286 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 11:25:17,286 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 11:25:17,286 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 11:25:17,286 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 11:25:17,286 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 11:25:17,287 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 11:25:17,287 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 11:25:17,287 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 11:25:17,287 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 11:25:17,287 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 11:25:17,287 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 11:25:17,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:25:17,288 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 11:25:17,288 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 11:25:17,288 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 11:25:17,288 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 11:25:17,288 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 11:25:17,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 11:25:17,289 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 11:25:17,289 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 11:25:17,289 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cced3cc-6c78-4e7c-9088-db9cf83599c1/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cced3cc-6c78-4e7c-9088-db9cf83599c1/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1ea7ddff382751fa0e11562333bdb4981cac7bdbf1d356a007804e7e2e5a289 [2022-12-14 11:25:17,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 11:25:17,513 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 11:25:17,515 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 11:25:17,516 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 11:25:17,517 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 11:25:17,517 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cced3cc-6c78-4e7c-9088-db9cf83599c1/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/list-properties/list_search-2.i [2022-12-14 11:25:20,056 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 11:25:20,288 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 11:25:20,289 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cced3cc-6c78-4e7c-9088-db9cf83599c1/sv-benchmarks/c/list-properties/list_search-2.i [2022-12-14 11:25:20,301 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cced3cc-6c78-4e7c-9088-db9cf83599c1/bin/utaipan-gh47qXpMRh/data/583bc8645/56dc4624059d4655b2e7cb8d9a1ec197/FLAG3d199abcd [2022-12-14 11:25:20,640 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cced3cc-6c78-4e7c-9088-db9cf83599c1/bin/utaipan-gh47qXpMRh/data/583bc8645/56dc4624059d4655b2e7cb8d9a1ec197 [2022-12-14 11:25:20,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 11:25:20,645 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 11:25:20,648 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 11:25:20,648 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 11:25:20,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 11:25:20,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:25:20" (1/1) ... [2022-12-14 11:25:20,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42242196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:25:20, skipping insertion in model container [2022-12-14 11:25:20,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:25:20" (1/1) ... [2022-12-14 11:25:20,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 11:25:20,699 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 11:25:20,823 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cced3cc-6c78-4e7c-9088-db9cf83599c1/sv-benchmarks/c/list-properties/list_search-2.i[813,826] [2022-12-14 11:25:20,980 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:25:20,988 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 11:25:20,997 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cced3cc-6c78-4e7c-9088-db9cf83599c1/sv-benchmarks/c/list-properties/list_search-2.i[813,826] [2022-12-14 11:25:21,029 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:25:21,068 INFO L208 MainTranslator]: Completed translation [2022-12-14 11:25:21,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:25:21 WrapperNode [2022-12-14 11:25:21,068 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 11:25:21,069 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 11:25:21,069 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 11:25:21,069 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 11:25:21,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:25:21" (1/1) ... [2022-12-14 11:25:21,084 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:25:21" (1/1) ... [2022-12-14 11:25:21,098 INFO L138 Inliner]: procedures = 226, calls = 29, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 101 [2022-12-14 11:25:21,099 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 11:25:21,099 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 11:25:21,099 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 11:25:21,099 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 11:25:21,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:25:21" (1/1) ... [2022-12-14 11:25:21,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:25:21" (1/1) ... [2022-12-14 11:25:21,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:25:21" (1/1) ... [2022-12-14 11:25:21,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:25:21" (1/1) ... [2022-12-14 11:25:21,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:25:21" (1/1) ... [2022-12-14 11:25:21,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:25:21" (1/1) ... [2022-12-14 11:25:21,120 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:25:21" (1/1) ... [2022-12-14 11:25:21,121 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:25:21" (1/1) ... [2022-12-14 11:25:21,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 11:25:21,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 11:25:21,124 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 11:25:21,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 11:25:21,125 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:25:21" (1/1) ... [2022-12-14 11:25:21,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:25:21,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cced3cc-6c78-4e7c-9088-db9cf83599c1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:25:21,157 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cced3cc-6c78-4e7c-9088-db9cf83599c1/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 11:25:21,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cced3cc-6c78-4e7c-9088-db9cf83599c1/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 11:25:21,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 11:25:21,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 11:25:21,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 11:25:21,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 11:25:21,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 11:25:21,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 11:25:21,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 11:25:21,198 INFO L130 BoogieDeclarations]: Found specification of procedure insert_list [2022-12-14 11:25:21,199 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_list [2022-12-14 11:25:21,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 11:25:21,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 11:25:21,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 11:25:21,304 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 11:25:21,306 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 11:25:21,467 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 11:25:21,527 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 11:25:21,527 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-14 11:25:21,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:25:21 BoogieIcfgContainer [2022-12-14 11:25:21,530 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 11:25:21,533 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 11:25:21,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 11:25:21,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 11:25:21,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:25:20" (1/3) ... [2022-12-14 11:25:21,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4599a48a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:25:21, skipping insertion in model container [2022-12-14 11:25:21,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:25:21" (2/3) ... [2022-12-14 11:25:21,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4599a48a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:25:21, skipping insertion in model container [2022-12-14 11:25:21,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:25:21" (3/3) ... [2022-12-14 11:25:21,539 INFO L112 eAbstractionObserver]: Analyzing ICFG list_search-2.i [2022-12-14 11:25:21,559 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 11:25:21,560 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 11:25:21,606 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:25:21,611 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1984ea22, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:25:21,611 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 11:25:21,615 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 18 states have (on average 1.5) internal successors, (27), 19 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:25:21,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-14 11:25:21,621 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:25:21,621 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:25:21,621 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:25:21,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:25:21,626 INFO L85 PathProgramCache]: Analyzing trace with hash 82220040, now seen corresponding path program 1 times [2022-12-14 11:25:21,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:25:21,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853561103] [2022-12-14 11:25:21,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:25:21,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:25:21,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:25:21,846 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 11:25:21,847 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:25:21,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853561103] [2022-12-14 11:25:21,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853561103] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:25:21,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:25:21,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:25:21,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237103283] [2022-12-14 11:25:21,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:25:21,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 11:25:21,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:25:21,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 11:25:21,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 11:25:21,875 INFO L87 Difference]: Start difference. First operand has 25 states, 18 states have (on average 1.5) internal successors, (27), 19 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 11:25:21,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:25:21,909 INFO L93 Difference]: Finished difference Result 36 states and 50 transitions. [2022-12-14 11:25:21,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 11:25:21,912 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 22 [2022-12-14 11:25:21,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:25:21,916 INFO L225 Difference]: With dead ends: 36 [2022-12-14 11:25:21,916 INFO L226 Difference]: Without dead ends: 18 [2022-12-14 11:25:21,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 11:25:21,920 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:25:21,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:25:21,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-12-14 11:25:21,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-12-14 11:25:21,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:25:21,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2022-12-14 11:25:21,945 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 22 [2022-12-14 11:25:21,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:25:21,946 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2022-12-14 11:25:21,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 11:25:21,947 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2022-12-14 11:25:21,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 11:25:21,947 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:25:21,947 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:25:21,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 11:25:21,948 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:25:21,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:25:21,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1677929474, now seen corresponding path program 1 times [2022-12-14 11:25:21,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:25:21,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406455397] [2022-12-14 11:25:21,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:25:21,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:25:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:25:22,084 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 11:25:22,084 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:25:22,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406455397] [2022-12-14 11:25:22,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406455397] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:25:22,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:25:22,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 11:25:22,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481648803] [2022-12-14 11:25:22,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:25:22,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:25:22,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:25:22,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:25:22,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:25:22,088 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 11:25:22,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:25:22,140 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2022-12-14 11:25:22,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 11:25:22,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 23 [2022-12-14 11:25:22,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:25:22,142 INFO L225 Difference]: With dead ends: 26 [2022-12-14 11:25:22,142 INFO L226 Difference]: Without dead ends: 20 [2022-12-14 11:25:22,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:25:22,144 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 19 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:25:22,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 27 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:25:22,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-12-14 11:25:22,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2022-12-14 11:25:22,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:25:22,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2022-12-14 11:25:22,150 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 23 [2022-12-14 11:25:22,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:25:22,151 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-12-14 11:25:22,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 11:25:22,151 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2022-12-14 11:25:22,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 11:25:22,152 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:25:22,152 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:25:22,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 11:25:22,152 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:25:22,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:25:22,153 INFO L85 PathProgramCache]: Analyzing trace with hash 237438766, now seen corresponding path program 1 times [2022-12-14 11:25:22,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:25:22,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619927404] [2022-12-14 11:25:22,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:25:22,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:25:22,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:25:22,510 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 11:25:22,511 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:25:22,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619927404] [2022-12-14 11:25:22,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619927404] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:25:22,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:25:22,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 11:25:22,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034108257] [2022-12-14 11:25:22,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:25:22,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 11:25:22,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:25:22,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 11:25:22,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 11:25:22,513 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 11:25:22,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:25:22,603 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2022-12-14 11:25:22,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 11:25:22,604 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 24 [2022-12-14 11:25:22,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:25:22,605 INFO L225 Difference]: With dead ends: 26 [2022-12-14 11:25:22,605 INFO L226 Difference]: Without dead ends: 22 [2022-12-14 11:25:22,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-12-14 11:25:22,606 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 25 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:25:22,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 57 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:25:22,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-12-14 11:25:22,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2022-12-14 11:25:22,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:25:22,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2022-12-14 11:25:22,611 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 24 [2022-12-14 11:25:22,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:25:22,611 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2022-12-14 11:25:22,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 11:25:22,611 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2022-12-14 11:25:22,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-14 11:25:22,611 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:25:22,612 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:25:22,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 11:25:22,612 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:25:22,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:25:22,612 INFO L85 PathProgramCache]: Analyzing trace with hash 613454972, now seen corresponding path program 1 times [2022-12-14 11:25:22,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:25:22,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084152142] [2022-12-14 11:25:22,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:25:22,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:25:22,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:25:23,007 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 11:25:23,007 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:25:23,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084152142] [2022-12-14 11:25:23,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084152142] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:25:23,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197486683] [2022-12-14 11:25:23,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:25:23,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:25:23,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cced3cc-6c78-4e7c-9088-db9cf83599c1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:25:23,009 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cced3cc-6c78-4e7c-9088-db9cf83599c1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:25:23,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cced3cc-6c78-4e7c-9088-db9cf83599c1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 11:25:23,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:25:23,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-14 11:25:23,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:25:23,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:25:23,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-12-14 11:25:23,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:25:23,329 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:25:23,331 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:25:23,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 11 [2022-12-14 11:25:23,336 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 11:25:23,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:25:23,789 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:25:23,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 51 [2022-12-14 11:25:23,807 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:25:23,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 51 [2022-12-14 11:25:23,887 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-12-14 11:25:23,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2022-12-14 11:25:23,918 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:25:23,919 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 7 treesize of output 6 [2022-12-14 11:25:23,924 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:25:23,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2022-12-14 11:25:23,982 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:25:23,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 93 treesize of output 109 [2022-12-14 11:25:23,993 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:25:23,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 88 [2022-12-14 11:25:24,009 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:25:24,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 81 treesize of output 97 [2022-12-14 11:25:24,069 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 11:25:24,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197486683] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:25:24,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [836557556] [2022-12-14 11:25:24,086 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-12-14 11:25:24,086 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:25:24,089 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:25:24,093 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:25:24,094 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:25:24,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 11:25:24,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:24,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:25:24,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:24,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 11:25:24,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:24,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:25:24,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:24,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:25:24,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:24,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:25:24,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:24,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 11:25:24,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:25:24,650 INFO L197 IcfgInterpreter]: Interpreting procedure insert_list with input of size 84 for LOIs [2022-12-14 11:25:24,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 11:25:24,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:25:24,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:24,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:25:24,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:24,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 11:25:24,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:24,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:25:24,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:24,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:25:24,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:24,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:25:24,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:24,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 11:25:24,867 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:25:25,511 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '427#(and (<= 2 |ULTIMATE.start_search_list_~k#1|) (= |ULTIMATE.start_main_~temp~0#1.offset| |ULTIMATE.start_search_list_#res#1.offset|) (<= 0 |ULTIMATE.start_search_list_#in~l#1.base|) (<= |ULTIMATE.start_search_list_#in~l#1.offset| 0) (<= |ULTIMATE.start_search_list_#in~l#1.base| 0) (= |ULTIMATE.start_main_~mylist~0#1.base| 0) (= |ULTIMATE.start_main_~mylist~0#1.offset| 0) (= |ULTIMATE.start_search_list_~l#1.offset| 0) (<= |ULTIMATE.start_search_list_~k#1| 2) (= ~head~0.offset 0) (= |ULTIMATE.start_search_list_#res#1.base| |ULTIMATE.start_search_list_~l#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_search_list_#in~l#1.offset|) (= |ULTIMATE.start_search_list_#res#1.base| |ULTIMATE.start_main_~temp~0#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_main_~temp~0#1.base|) |ULTIMATE.start_main_~temp~0#1.offset|) |ULTIMATE.start_main_#t~mem45#1|) (= |ULTIMATE.start_search_list_#res#1.offset| |ULTIMATE.start_search_list_~l#1.offset|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start_search_list_#in~k#1| 2) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= 2 |ULTIMATE.start_main_#t~mem45#1|) 1 0)) (= |ULTIMATE.start_search_list_~l#1.base| 0) (= |#NULL.base| 0))' at error location [2022-12-14 11:25:25,511 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:25:25,511 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:25:25,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2022-12-14 11:25:25,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662089177] [2022-12-14 11:25:25,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:25:25,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 11:25:25,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:25:25,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 11:25:25,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=561, Unknown=0, NotChecked=0, Total=650 [2022-12-14 11:25:25,513 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 12 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 11:25:25,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:25:25,663 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2022-12-14 11:25:25,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 11:25:25,663 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 26 [2022-12-14 11:25:25,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:25:25,664 INFO L225 Difference]: With dead ends: 33 [2022-12-14 11:25:25,664 INFO L226 Difference]: Without dead ends: 25 [2022-12-14 11:25:25,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=148, Invalid=908, Unknown=0, NotChecked=0, Total=1056 [2022-12-14 11:25:25,664 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 53 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:25:25,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 38 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:25:25,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-12-14 11:25:25,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2022-12-14 11:25:25,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:25:25,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-12-14 11:25:25,668 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 26 [2022-12-14 11:25:25,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:25:25,668 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-12-14 11:25:25,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 11:25:25,669 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-12-14 11:25:25,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-14 11:25:25,669 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:25:25,669 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:25:25,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cced3cc-6c78-4e7c-9088-db9cf83599c1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 11:25:25,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cced3cc-6c78-4e7c-9088-db9cf83599c1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:25:25,871 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:25:25,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:25:25,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1586801844, now seen corresponding path program 2 times [2022-12-14 11:25:25,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:25:25,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681291056] [2022-12-14 11:25:25,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:25:25,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:25:25,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:25:26,387 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-14 11:25:26,387 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:25:26,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681291056] [2022-12-14 11:25:26,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681291056] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:25:26,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000326608] [2022-12-14 11:25:26,388 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 11:25:26,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:25:26,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cced3cc-6c78-4e7c-9088-db9cf83599c1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:25:26,389 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cced3cc-6c78-4e7c-9088-db9cf83599c1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:25:26,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cced3cc-6c78-4e7c-9088-db9cf83599c1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 11:25:26,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-14 11:25:26,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:25:26,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 42 conjunts are in the unsatisfiable core [2022-12-14 11:25:26,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:25:26,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2022-12-14 11:25:26,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-12-14 11:25:26,684 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 11:25:26,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:25:26,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2022-12-14 11:25:26,774 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-12-14 11:25:26,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2022-12-14 11:25:26,780 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-12-14 11:25:26,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2022-12-14 11:25:26,794 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 11:25:26,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000326608] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:25:26,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2003921141] [2022-12-14 11:25:26,796 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-12-14 11:25:26,796 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:25:26,796 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:25:26,796 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:25:26,797 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:25:26,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 11:25:26,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:26,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:25:26,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:26,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:25:26,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:26,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 11:25:26,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:26,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 11:25:26,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:26,851 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:25:26,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 7 [2022-12-14 11:25:26,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:26,859 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:25:26,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 7 [2022-12-14 11:25:26,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:25:26,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:25:26,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:25:26,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:25:26,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:25:26,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:25:26,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:25:26,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:25:26,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:25:26,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:25:27,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:25:27,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:25:27,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 11:25:27,073 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:25:27,075 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:25:27,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 83 [2022-12-14 11:25:27,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:25:27,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:25:27,115 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:25:27,118 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:25:27,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 83 [2022-12-14 11:25:27,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:25:27,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 11:25:27,368 INFO L197 IcfgInterpreter]: Interpreting procedure insert_list with input of size 84 for LOIs [2022-12-14 11:25:27,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:25:27,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 11:25:27,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:27,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:25:27,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:27,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:25:27,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:27,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 11:25:27,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:27,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:25:27,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:27,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:25:27,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:27,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 11:25:27,593 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:25:28,598 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '718#(and (<= 2 |ULTIMATE.start_search_list_~k#1|) (= |ULTIMATE.start_main_~temp~0#1.offset| |ULTIMATE.start_search_list_#res#1.offset|) (<= 0 |ULTIMATE.start_search_list_#in~l#1.base|) (<= |ULTIMATE.start_search_list_#in~l#1.offset| 0) (<= |ULTIMATE.start_search_list_#in~l#1.base| 0) (= |ULTIMATE.start_main_~mylist~0#1.base| 0) (= |ULTIMATE.start_main_~mylist~0#1.offset| 0) (= |ULTIMATE.start_search_list_~l#1.offset| 0) (<= |ULTIMATE.start_search_list_~k#1| 2) (= ~head~0.offset 0) (= |ULTIMATE.start_search_list_#res#1.base| |ULTIMATE.start_search_list_~l#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_search_list_#in~l#1.offset|) (= |ULTIMATE.start_search_list_#res#1.base| |ULTIMATE.start_main_~temp~0#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_main_~temp~0#1.base|) |ULTIMATE.start_main_~temp~0#1.offset|) |ULTIMATE.start_main_#t~mem45#1|) (= |ULTIMATE.start_search_list_#res#1.offset| |ULTIMATE.start_search_list_~l#1.offset|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start_search_list_#in~k#1| 2) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= 2 |ULTIMATE.start_main_#t~mem45#1|) 1 0)) (= |ULTIMATE.start_search_list_~l#1.base| 0) (= |#NULL.base| 0))' at error location [2022-12-14 11:25:28,598 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:25:28,599 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:25:28,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 20 [2022-12-14 11:25:28,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887599855] [2022-12-14 11:25:28,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:25:28,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-14 11:25:28,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:25:28,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-14 11:25:28,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1132, Unknown=0, NotChecked=0, Total=1260 [2022-12-14 11:25:28,600 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 20 states, 19 states have (on average 1.631578947368421) internal successors, (31), 19 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 11:25:29,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:25:29,020 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2022-12-14 11:25:29,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-14 11:25:29,020 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.631578947368421) internal successors, (31), 19 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 27 [2022-12-14 11:25:29,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:25:29,020 INFO L225 Difference]: With dead ends: 31 [2022-12-14 11:25:29,020 INFO L226 Difference]: Without dead ends: 27 [2022-12-14 11:25:29,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=260, Invalid=2190, Unknown=0, NotChecked=0, Total=2450 [2022-12-14 11:25:29,022 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 59 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:25:29,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 76 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:25:29,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-12-14 11:25:29,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2022-12-14 11:25:29,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:25:29,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2022-12-14 11:25:29,025 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 27 [2022-12-14 11:25:29,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:25:29,025 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2022-12-14 11:25:29,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.631578947368421) internal successors, (31), 19 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 11:25:29,025 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-12-14 11:25:29,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-14 11:25:29,026 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:25:29,026 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:25:29,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cced3cc-6c78-4e7c-9088-db9cf83599c1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 11:25:29,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cced3cc-6c78-4e7c-9088-db9cf83599c1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:25:29,228 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:25:29,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:25:29,229 INFO L85 PathProgramCache]: Analyzing trace with hash -135114470, now seen corresponding path program 3 times [2022-12-14 11:25:29,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:25:29,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474710028] [2022-12-14 11:25:29,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:25:29,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:25:29,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:25:29,934 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-14 11:25:29,935 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:25:29,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474710028] [2022-12-14 11:25:29,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474710028] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:25:29,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970686402] [2022-12-14 11:25:29,935 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 11:25:29,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:25:29,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cced3cc-6c78-4e7c-9088-db9cf83599c1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:25:29,936 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cced3cc-6c78-4e7c-9088-db9cf83599c1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:25:29,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cced3cc-6c78-4e7c-9088-db9cf83599c1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 11:25:30,066 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 11:25:30,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:25:30,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 91 conjunts are in the unsatisfiable core [2022-12-14 11:25:30,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:25:30,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-12-14 11:25:30,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:25:30,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:25:30,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:25:30,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-12-14 11:25:30,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:25:30,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-12-14 11:25:30,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:25:30,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-12-14 11:25:30,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:25:30,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-12-14 11:25:30,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:25:30,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:30,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-12-14 11:25:30,274 INFO L321 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2022-12-14 11:25:30,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2022-12-14 11:25:30,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:25:30,486 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 11:25:30,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 27 [2022-12-14 11:25:30,646 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 11:25:30,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:25:31,741 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:25:31,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 51 [2022-12-14 11:25:31,768 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-12-14 11:25:31,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 75 [2022-12-14 11:25:31,790 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:25:31,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 45 [2022-12-14 11:25:31,867 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:25:31,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 35 [2022-12-14 11:25:31,881 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-12-14 11:25:31,901 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:25:31,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 39 [2022-12-14 11:25:31,910 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-12-14 11:25:31,927 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-12-14 11:25:31,939 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-12-14 11:25:31,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 29 [2022-12-14 11:25:32,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970686402] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:25:32,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [338464420] [2022-12-14 11:25:32,043 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-12-14 11:25:32,043 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:25:32,043 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:25:32,044 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:25:32,044 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:25:32,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 11:25:32,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:32,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:25:32,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:32,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 11:25:32,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:32,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:25:32,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:32,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 11:25:32,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:32,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:25:32,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:32,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:25:32,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:25:32,434 INFO L197 IcfgInterpreter]: Interpreting procedure insert_list with input of size 84 for LOIs [2022-12-14 11:25:32,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 11:25:32,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:25:32,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:32,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:25:32,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:32,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:25:32,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:32,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 11:25:32,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:32,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:25:32,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:32,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 11:25:32,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:32,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-12-14 11:25:32,633 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:25:33,664 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1006#(and (<= 2 |ULTIMATE.start_search_list_~k#1|) (= |ULTIMATE.start_main_~temp~0#1.offset| |ULTIMATE.start_search_list_#res#1.offset|) (<= 0 |ULTIMATE.start_search_list_#in~l#1.base|) (<= |ULTIMATE.start_search_list_#in~l#1.offset| 0) (<= |ULTIMATE.start_search_list_#in~l#1.base| 0) (= |ULTIMATE.start_main_~mylist~0#1.base| 0) (= |ULTIMATE.start_main_~mylist~0#1.offset| 0) (= |ULTIMATE.start_search_list_~l#1.offset| 0) (<= |ULTIMATE.start_search_list_~k#1| 2) (= ~head~0.offset 0) (= |ULTIMATE.start_search_list_#res#1.base| |ULTIMATE.start_search_list_~l#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_search_list_#in~l#1.offset|) (= |ULTIMATE.start_search_list_#res#1.base| |ULTIMATE.start_main_~temp~0#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_main_~temp~0#1.base|) |ULTIMATE.start_main_~temp~0#1.offset|) |ULTIMATE.start_main_#t~mem45#1|) (= |ULTIMATE.start_search_list_#res#1.offset| |ULTIMATE.start_search_list_~l#1.offset|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start_search_list_#in~k#1| 2) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= 2 |ULTIMATE.start_main_#t~mem45#1|) 1 0)) (= |ULTIMATE.start_search_list_~l#1.base| 0) (= |#NULL.base| 0))' at error location [2022-12-14 11:25:33,664 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:25:33,664 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 11:25:33,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16] total 23 [2022-12-14 11:25:33,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645405995] [2022-12-14 11:25:33,665 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 11:25:33,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-14 11:25:33,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:25:33,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-14 11:25:33,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1923, Unknown=1, NotChecked=0, Total=2070 [2022-12-14 11:25:33,667 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 23 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 20 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-14 11:25:34,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:25:34,744 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2022-12-14 11:25:34,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-14 11:25:34,744 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 20 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 29 [2022-12-14 11:25:34,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:25:34,745 INFO L225 Difference]: With dead ends: 44 [2022-12-14 11:25:34,745 INFO L226 Difference]: Without dead ends: 32 [2022-12-14 11:25:34,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 755 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=381, Invalid=3650, Unknown=1, NotChecked=0, Total=4032 [2022-12-14 11:25:34,746 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 84 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:25:34,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 111 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 11:25:34,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-12-14 11:25:34,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2022-12-14 11:25:34,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 23 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 11:25:34,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2022-12-14 11:25:34,751 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 29 [2022-12-14 11:25:34,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:25:34,751 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2022-12-14 11:25:34,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 20 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-14 11:25:34,751 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2022-12-14 11:25:34,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-12-14 11:25:34,752 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:25:34,752 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:25:34,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cced3cc-6c78-4e7c-9088-db9cf83599c1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 11:25:34,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cced3cc-6c78-4e7c-9088-db9cf83599c1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 11:25:34,953 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:25:34,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:25:34,954 INFO L85 PathProgramCache]: Analyzing trace with hash -540207464, now seen corresponding path program 4 times [2022-12-14 11:25:34,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:25:34,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039817196] [2022-12-14 11:25:34,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:25:34,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:25:35,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:25:36,654 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 11:25:36,654 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:25:36,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039817196] [2022-12-14 11:25:36,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039817196] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:25:36,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199162251] [2022-12-14 11:25:36,654 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 11:25:36,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:25:36,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cced3cc-6c78-4e7c-9088-db9cf83599c1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:25:36,655 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cced3cc-6c78-4e7c-9088-db9cf83599c1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:25:36,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cced3cc-6c78-4e7c-9088-db9cf83599c1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 11:25:36,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:25:36,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 111 conjunts are in the unsatisfiable core [2022-12-14 11:25:36,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:25:36,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-12-14 11:25:36,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:25:36,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:25:36,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:25:36,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:25:36,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-12-14 11:25:36,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 11:25:36,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-12-14 11:25:36,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:36,964 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 21 [2022-12-14 11:25:36,976 INFO L321 Elim1Store]: treesize reduction 36, result has 37.9 percent of original size [2022-12-14 11:25:36,977 INFO L350 Elim1Store]: Elim1 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 2 case distinctions, treesize of input 23 treesize of output 33 [2022-12-14 11:25:37,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-12-14 11:25:37,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-12-14 11:25:37,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:37,174 INFO L321 Elim1Store]: treesize reduction 27, result has 15.6 percent of original size [2022-12-14 11:25:37,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 64 treesize of output 54 [2022-12-14 11:25:37,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:37,184 INFO L321 Elim1Store]: treesize reduction 4, result has 77.8 percent of original size [2022-12-14 11:25:37,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 24 [2022-12-14 11:25:37,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:37,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-12-14 11:25:37,462 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 11:25:37,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:25:38,111 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:25:38,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 9 [2022-12-14 11:25:38,170 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:25:38,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 62 [2022-12-14 11:25:38,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:38,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:38,208 INFO L321 Elim1Store]: treesize reduction 14, result has 63.2 percent of original size [2022-12-14 11:25:38,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 100 treesize of output 109 [2022-12-14 11:25:38,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-12-14 11:25:38,240 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:25:38,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 62 [2022-12-14 11:25:38,267 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:25:38,268 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 58 [2022-12-14 11:25:38,281 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:25:38,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 58 [2022-12-14 11:25:38,294 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:25:38,295 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:25:38,301 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:25:38,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 52 [2022-12-14 11:25:38,314 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:25:38,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 48 [2022-12-14 11:25:38,348 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:25:38,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 58 [2022-12-14 11:25:38,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:38,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:38,374 INFO L321 Elim1Store]: treesize reduction 17, result has 59.5 percent of original size [2022-12-14 11:25:38,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 96 treesize of output 99 [2022-12-14 11:25:38,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-12-14 11:25:38,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-12-14 11:25:38,403 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:25:38,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 58 [2022-12-14 11:25:38,419 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:25:38,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 58 [2022-12-14 11:25:38,433 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:25:38,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 58 [2022-12-14 11:25:38,442 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:25:38,443 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:25:38,448 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:25:38,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 52 [2022-12-14 11:25:38,463 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:25:38,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 52 [2022-12-14 11:25:38,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:38,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:38,485 INFO L321 Elim1Store]: treesize reduction 21, result has 58.0 percent of original size [2022-12-14 11:25:38,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 86 treesize of output 91 [2022-12-14 11:25:38,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-12-14 11:25:38,511 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:25:38,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 52 [2022-12-14 11:25:38,529 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:25:38,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 48 [2022-12-14 11:25:38,566 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:25:38,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 580 treesize of output 517 [2022-12-14 11:25:38,886 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:25:38,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 48 [2022-12-14 11:25:38,906 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:25:38,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 376 treesize of output 337 [2022-12-14 11:25:39,093 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:25:39,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 48 [2022-12-14 11:25:39,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:39,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:25:39,703 INFO L321 Elim1Store]: treesize reduction 1172, result has 34.7 percent of original size [2022-12-14 11:25:39,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 12 new quantified variables, introduced 56 case distinctions, treesize of input 631 treesize of output 1045 [2022-12-14 11:25:43,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-12-14 11:25:47,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-12-14 11:26:03,693 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-12-14 11:26:03,711 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-12-14 11:26:03,786 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-12-14 11:26:03,801 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-12-14 11:26:52,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2022-12-14 11:26:52,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2022-12-14 11:26:53,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2022-12-14 11:26:53,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2022-12-14 11:26:53,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-12-14 11:26:54,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-12-14 11:26:54,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-12-14 11:26:54,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-12-14 11:26:56,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-12-14 11:26:56,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-12-14 11:26:56,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-12-14 11:30:29,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-12-14 11:30:31,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-12-14 11:30:31,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-12-14 11:30:31,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-12-14 11:30:34,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-12-14 11:30:54,982 WARN L233 SmtUtils]: Spent 6.25s on a formula simplification that was a NOOP. DAG size: 12668 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-14 11:30:57,593 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:30:57,594 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:30:57,597 INFO L321 Elim1Store]: treesize reduction 25, result has 3.8 percent of original size [2022-12-14 11:30:57,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 54 treesize of output 13 [2022-12-14 11:30:57,619 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:30:57,620 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:30:57,623 INFO L321 Elim1Store]: treesize reduction 95, result has 1.0 percent of original size [2022-12-14 11:30:57,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 71 treesize of output 17 [2022-12-14 11:30:57,828 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:30:57,834 INFO L321 Elim1Store]: treesize reduction 43, result has 2.3 percent of original size [2022-12-14 11:30:57,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 13 [2022-12-14 11:30:58,847 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-12-14 11:30:58,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 9 [2022-12-14 11:31:02,058 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:02,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2022-12-14 11:31:02,076 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:02,076 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:02,077 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:02,078 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:02,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:31:02,083 INFO L321 Elim1Store]: treesize reduction 25, result has 3.8 percent of original size [2022-12-14 11:31:02,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 13 [2022-12-14 11:31:03,788 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:03,790 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:03,793 INFO L321 Elim1Store]: treesize reduction 86, result has 1.1 percent of original size [2022-12-14 11:31:03,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 71 treesize of output 17 [2022-12-14 11:31:04,183 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:04,184 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:04,188 INFO L321 Elim1Store]: treesize reduction 86, result has 1.1 percent of original size [2022-12-14 11:31:04,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 58 treesize of output 17 [2022-12-14 11:31:04,264 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:04,265 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:04,266 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:04,270 INFO L321 Elim1Store]: treesize reduction 69, result has 1.4 percent of original size [2022-12-14 11:31:04,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 17 [2022-12-14 11:31:08,048 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:08,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2022-12-14 11:31:12,124 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:12,126 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:12,131 INFO L321 Elim1Store]: treesize reduction 86, result has 1.1 percent of original size [2022-12-14 11:31:12,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 71 treesize of output 17 [2022-12-14 11:31:22,694 INFO L321 Elim1Store]: treesize reduction 22, result has 15.4 percent of original size [2022-12-14 11:31:22,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 13 [2022-12-14 11:31:22,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-12-14 11:31:22,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 9 [2022-12-14 11:31:22,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-12-14 11:31:23,798 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:23,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2022-12-14 11:31:23,814 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:23,815 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:23,819 INFO L321 Elim1Store]: treesize reduction 25, result has 3.8 percent of original size [2022-12-14 11:31:23,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 41 treesize of output 13 [2022-12-14 11:31:23,833 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:23,838 INFO L321 Elim1Store]: treesize reduction 43, result has 2.3 percent of original size [2022-12-14 11:31:23,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 13 [2022-12-14 11:31:23,845 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:23,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2022-12-14 11:31:23,858 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:23,858 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:23,862 INFO L321 Elim1Store]: treesize reduction 25, result has 3.8 percent of original size [2022-12-14 11:31:23,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 41 treesize of output 13 [2022-12-14 11:31:30,034 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:30,035 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:30,039 INFO L321 Elim1Store]: treesize reduction 22, result has 15.4 percent of original size [2022-12-14 11:31:30,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 41 treesize of output 17 [2022-12-14 11:31:30,050 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:30,056 INFO L321 Elim1Store]: treesize reduction 40, result has 9.1 percent of original size [2022-12-14 11:31:30,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 17 [2022-12-14 11:31:32,274 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:31:32,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 26 [2022-12-14 11:31:32,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:31:32,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2022-12-14 11:31:32,716 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:32,718 INFO L321 Elim1Store]: treesize reduction 43, result has 2.3 percent of original size [2022-12-14 11:31:32,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 13 [2022-12-14 11:31:32,723 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:32,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2022-12-14 11:31:32,732 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:32,737 INFO L321 Elim1Store]: treesize reduction 43, result has 2.3 percent of original size [2022-12-14 11:31:32,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 13 [2022-12-14 11:31:33,156 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:33,156 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:33,157 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:33,158 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:33,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:31:33,161 INFO L321 Elim1Store]: treesize reduction 25, result has 3.8 percent of original size [2022-12-14 11:31:33,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 13 [2022-12-14 11:31:33,176 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:33,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2022-12-14 11:31:33,697 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:33,698 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:33,700 INFO L321 Elim1Store]: treesize reduction 25, result has 3.8 percent of original size [2022-12-14 11:31:33,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 41 treesize of output 13 [2022-12-14 11:31:33,826 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:33,827 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:33,832 INFO L321 Elim1Store]: treesize reduction 25, result has 3.8 percent of original size [2022-12-14 11:31:33,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 41 treesize of output 13 [2022-12-14 11:31:33,910 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:33,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2022-12-14 11:31:33,942 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:33,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2022-12-14 11:31:33,977 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:33,981 INFO L321 Elim1Store]: treesize reduction 43, result has 2.3 percent of original size [2022-12-14 11:31:33,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 13 [2022-12-14 11:31:35,399 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:35,399 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:35,405 INFO L321 Elim1Store]: treesize reduction 25, result has 3.8 percent of original size [2022-12-14 11:31:35,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 41 treesize of output 13 [2022-12-14 11:31:36,050 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:36,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2022-12-14 11:31:36,062 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:36,063 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:36,063 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:36,063 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:36,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:31:36,069 INFO L321 Elim1Store]: treesize reduction 25, result has 3.8 percent of original size [2022-12-14 11:31:36,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 13 [2022-12-14 11:31:36,236 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:36,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2022-12-14 11:31:36,248 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:36,249 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:36,251 INFO L321 Elim1Store]: treesize reduction 25, result has 3.8 percent of original size [2022-12-14 11:31:36,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 41 treesize of output 13 [2022-12-14 11:31:37,637 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:37,641 INFO L321 Elim1Store]: treesize reduction 43, result has 2.3 percent of original size [2022-12-14 11:31:37,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 13 [2022-12-14 11:31:37,656 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:37,659 INFO L321 Elim1Store]: treesize reduction 43, result has 2.3 percent of original size [2022-12-14 11:31:37,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 13 [2022-12-14 11:31:37,675 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-12-14 11:31:37,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 9 [2022-12-14 11:31:37,687 INFO L321 Elim1Store]: treesize reduction 60, result has 1.6 percent of original size [2022-12-14 11:31:37,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 13 [2022-12-14 11:31:40,622 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:40,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2022-12-14 11:31:40,633 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:40,633 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:40,636 INFO L321 Elim1Store]: treesize reduction 25, result has 3.8 percent of original size [2022-12-14 11:31:40,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 41 treesize of output 13 [2022-12-14 11:31:40,647 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:40,651 INFO L321 Elim1Store]: treesize reduction 43, result has 2.3 percent of original size [2022-12-14 11:31:40,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 13 [2022-12-14 11:31:40,658 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:40,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2022-12-14 11:31:40,669 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:40,670 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:40,674 INFO L321 Elim1Store]: treesize reduction 25, result has 3.8 percent of original size [2022-12-14 11:31:40,674 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 41 treesize of output 13 [2022-12-14 11:31:43,795 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:43,799 INFO L321 Elim1Store]: treesize reduction 43, result has 2.3 percent of original size [2022-12-14 11:31:43,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 13 [2022-12-14 11:31:44,021 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:44,021 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:44,026 INFO L321 Elim1Store]: treesize reduction 25, result has 3.8 percent of original size [2022-12-14 11:31:44,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 41 treesize of output 13 [2022-12-14 11:31:44,224 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:44,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2022-12-14 11:31:44,454 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:44,455 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:44,459 INFO L321 Elim1Store]: treesize reduction 25, result has 3.8 percent of original size [2022-12-14 11:31:44,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 41 treesize of output 13 [2022-12-14 11:31:44,682 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:44,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2022-12-14 11:31:48,468 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:48,468 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:48,471 INFO L321 Elim1Store]: treesize reduction 25, result has 3.8 percent of original size [2022-12-14 11:31:48,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 41 treesize of output 13 [2022-12-14 11:31:48,753 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:48,753 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:48,756 INFO L321 Elim1Store]: treesize reduction 25, result has 3.8 percent of original size [2022-12-14 11:31:48,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 41 treesize of output 13 [2022-12-14 11:31:48,907 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:48,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2022-12-14 11:31:48,965 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:48,967 INFO L321 Elim1Store]: treesize reduction 43, result has 2.3 percent of original size [2022-12-14 11:31:48,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 13 [2022-12-14 11:31:49,020 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:49,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2022-12-14 11:31:53,701 INFO L321 Elim1Store]: treesize reduction 60, result has 1.6 percent of original size [2022-12-14 11:31:53,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 13 [2022-12-14 11:31:53,717 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:53,723 INFO L321 Elim1Store]: treesize reduction 43, result has 2.3 percent of original size [2022-12-14 11:31:53,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 13 [2022-12-14 11:31:53,745 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:53,750 INFO L321 Elim1Store]: treesize reduction 43, result has 2.3 percent of original size [2022-12-14 11:31:53,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 13 [2022-12-14 11:31:53,768 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-12-14 11:31:53,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 9 [2022-12-14 11:31:54,676 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:54,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2022-12-14 11:31:54,733 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:54,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2022-12-14 11:31:54,990 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:54,990 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:54,992 INFO L321 Elim1Store]: treesize reduction 25, result has 3.8 percent of original size [2022-12-14 11:31:54,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 41 treesize of output 13 [2022-12-14 11:31:55,101 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:55,101 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:55,104 INFO L321 Elim1Store]: treesize reduction 25, result has 3.8 percent of original size [2022-12-14 11:31:55,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 41 treesize of output 13 [2022-12-14 11:31:55,174 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:55,177 INFO L321 Elim1Store]: treesize reduction 43, result has 2.3 percent of original size [2022-12-14 11:31:55,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 13 [2022-12-14 11:31:55,186 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:55,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2022-12-14 11:31:55,231 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:31:55,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2022-12-14 11:32:05,551 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-12-14 11:32:05,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 9 [2022-12-14 11:32:08,990 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:32:08,990 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:32:08,994 INFO L321 Elim1Store]: treesize reduction 25, result has 3.8 percent of original size [2022-12-14 11:32:08,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 37 treesize of output 9 [2022-12-14 11:32:14,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:32:14,121 INFO L321 Elim1Store]: treesize reduction 25, result has 3.8 percent of original size [2022-12-14 11:32:14,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 13 [2022-12-14 11:32:14,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:32:14,148 INFO L321 Elim1Store]: treesize reduction 78, result has 1.3 percent of original size [2022-12-14 11:32:14,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 58 treesize of output 17 [2022-12-14 11:32:14,618 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:32:14,621 INFO L321 Elim1Store]: treesize reduction 43, result has 2.3 percent of original size [2022-12-14 11:32:14,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 13 [2022-12-14 11:32:21,409 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:32:21,412 INFO L321 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2022-12-14 11:32:21,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 13 [2022-12-14 11:32:21,453 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-12-14 11:32:21,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 9 [2022-12-14 11:32:21,459 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:32:21,460 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:32:21,460 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:32:21,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:32:21,464 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-12-14 11:32:21,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 13 [2022-12-14 11:32:21,476 INFO L321 Elim1Store]: treesize reduction 60, result has 1.6 percent of original size [2022-12-14 11:32:21,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 13 [2022-12-14 11:32:21,508 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-12-14 11:32:21,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 9 [2022-12-14 11:32:21,521 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:32:21,524 INFO L321 Elim1Store]: treesize reduction 43, result has 2.3 percent of original size [2022-12-14 11:32:21,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 13 [2022-12-14 11:32:25,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-12-14 11:32:25,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-12-14 11:32:25,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-12-14 11:32:25,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-12-14 11:32:26,462 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 11:32:26,465 INFO L321 Elim1Store]: treesize reduction 43, result has 2.3 percent of original size [2022-12-14 11:32:26,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 13 [2022-12-14 11:32:30,183 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:32:30,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 206 treesize of output 294 [2022-12-14 11:32:37,992 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:32:37,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 17 select indices, 17 select index equivalence classes, 0 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 136 case distinctions, treesize of input 868 treesize of output 3998