./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/dll2c_remove_all.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee494cc7-9745-43bc-a89d-bc24e8192c48/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee494cc7-9745-43bc-a89d-bc24e8192c48/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_ee494cc7-9745-43bc-a89d-bc24e8192c48/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee494cc7-9745-43bc-a89d-bc24e8192c48/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/dll2c_remove_all.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee494cc7-9745-43bc-a89d-bc24e8192c48/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_ee494cc7-9745-43bc-a89d-bc24e8192c48/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 6c2ed91303515fb47ae50633bb4ba0c83e07781b13d03a95e0e32251f9fc3016 --- 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 12:15:20,114 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 12:15:20,116 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 12:15:20,134 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 12:15:20,134 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 12:15:20,135 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 12:15:20,137 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 12:15:20,138 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 12:15:20,140 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 12:15:20,140 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 12:15:20,141 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 12:15:20,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 12:15:20,143 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 12:15:20,144 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 12:15:20,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 12:15:20,146 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 12:15:20,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 12:15:20,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 12:15:20,149 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 12:15:20,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 12:15:20,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 12:15:20,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 12:15:20,154 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 12:15:20,155 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 12:15:20,158 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 12:15:20,158 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 12:15:20,158 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 12:15:20,159 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 12:15:20,159 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 12:15:20,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 12:15:20,160 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 12:15:20,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 12:15:20,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 12:15:20,162 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 12:15:20,163 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 12:15:20,163 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 12:15:20,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 12:15:20,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 12:15:20,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 12:15:20,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 12:15:20,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 12:15:20,166 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee494cc7-9745-43bc-a89d-bc24e8192c48/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 12:15:20,186 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 12:15:20,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 12:15:20,186 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 12:15:20,187 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 12:15:20,187 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 12:15:20,187 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 12:15:20,188 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 12:15:20,188 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 12:15:20,188 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 12:15:20,188 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 12:15:20,188 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 12:15:20,188 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 12:15:20,188 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 12:15:20,189 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 12:15:20,189 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 12:15:20,189 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 12:15:20,189 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 12:15:20,189 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 12:15:20,190 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 12:15:20,190 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 12:15:20,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 12:15:20,190 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 12:15:20,190 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 12:15:20,190 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 12:15:20,190 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 12:15:20,190 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 12:15:20,191 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 12:15:20,191 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 12:15:20,191 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 12:15:20,191 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 12:15:20,191 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 12:15:20,192 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 12:15:20,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:15:20,192 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 12:15:20,192 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 12:15:20,192 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 12:15:20,192 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 12:15:20,192 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 12:15:20,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 12:15:20,192 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 12:15:20,192 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 12:15:20,193 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_ee494cc7-9745-43bc-a89d-bc24e8192c48/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee494cc7-9745-43bc-a89d-bc24e8192c48/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c2ed91303515fb47ae50633bb4ba0c83e07781b13d03a95e0e32251f9fc3016 [2022-12-14 12:15:20,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 12:15:20,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 12:15:20,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 12:15:20,415 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 12:15:20,416 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 12:15:20,416 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee494cc7-9745-43bc-a89d-bc24e8192c48/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/list-simple/dll2c_remove_all.i [2022-12-14 12:15:22,972 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 12:15:23,183 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 12:15:23,184 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee494cc7-9745-43bc-a89d-bc24e8192c48/sv-benchmarks/c/list-simple/dll2c_remove_all.i [2022-12-14 12:15:23,194 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee494cc7-9745-43bc-a89d-bc24e8192c48/bin/utaipan-gh47qXpMRh/data/560085305/9794c761cfdd450683e6b4faa6b998bc/FLAGa7e03f74b [2022-12-14 12:15:23,545 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee494cc7-9745-43bc-a89d-bc24e8192c48/bin/utaipan-gh47qXpMRh/data/560085305/9794c761cfdd450683e6b4faa6b998bc [2022-12-14 12:15:23,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 12:15:23,548 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 12:15:23,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 12:15:23,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 12:15:23,552 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 12:15:23,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:15:23" (1/1) ... [2022-12-14 12:15:23,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f2bbe34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:15:23, skipping insertion in model container [2022-12-14 12:15:23,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:15:23" (1/1) ... [2022-12-14 12:15:23,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 12:15:23,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 12:15:23,774 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_ee494cc7-9745-43bc-a89d-bc24e8192c48/sv-benchmarks/c/list-simple/dll2c_remove_all.i[24169,24182] [2022-12-14 12:15:23,777 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:15:23,784 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 12:15:23,811 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_ee494cc7-9745-43bc-a89d-bc24e8192c48/sv-benchmarks/c/list-simple/dll2c_remove_all.i[24169,24182] [2022-12-14 12:15:23,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:15:23,828 INFO L208 MainTranslator]: Completed translation [2022-12-14 12:15:23,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:15:23 WrapperNode [2022-12-14 12:15:23,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 12:15:23,830 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 12:15:23,830 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 12:15:23,830 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 12:15:23,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:15:23" (1/1) ... [2022-12-14 12:15:23,844 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:15:23" (1/1) ... [2022-12-14 12:15:23,857 INFO L138 Inliner]: procedures = 126, calls = 38, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 105 [2022-12-14 12:15:23,858 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 12:15:23,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 12:15:23,858 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 12:15:23,858 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 12:15:23,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:15:23" (1/1) ... [2022-12-14 12:15:23,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:15:23" (1/1) ... [2022-12-14 12:15:23,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:15:23" (1/1) ... [2022-12-14 12:15:23,867 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:15:23" (1/1) ... [2022-12-14 12:15:23,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:15:23" (1/1) ... [2022-12-14 12:15:23,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:15:23" (1/1) ... [2022-12-14 12:15:23,874 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:15:23" (1/1) ... [2022-12-14 12:15:23,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:15:23" (1/1) ... [2022-12-14 12:15:23,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 12:15:23,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 12:15:23,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 12:15:23,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 12:15:23,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:15:23" (1/1) ... [2022-12-14 12:15:23,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:15:23,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee494cc7-9745-43bc-a89d-bc24e8192c48/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:15:23,901 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee494cc7-9745-43bc-a89d-bc24e8192c48/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 12:15:23,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee494cc7-9745-43bc-a89d-bc24e8192c48/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 12:15:23,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 12:15:23,934 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2022-12-14 12:15:23,935 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2022-12-14 12:15:23,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 12:15:23,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 12:15:23,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 12:15:23,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 12:15:23,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 12:15:23,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 12:15:23,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 12:15:23,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 12:15:23,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 12:15:23,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 12:15:24,021 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 12:15:24,022 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 12:15:24,168 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 12:15:24,236 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 12:15:24,236 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 12:15:24,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:15:24 BoogieIcfgContainer [2022-12-14 12:15:24,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 12:15:24,241 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 12:15:24,241 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 12:15:24,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 12:15:24,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 12:15:23" (1/3) ... [2022-12-14 12:15:24,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3522f5c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:15:24, skipping insertion in model container [2022-12-14 12:15:24,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:15:23" (2/3) ... [2022-12-14 12:15:24,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3522f5c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:15:24, skipping insertion in model container [2022-12-14 12:15:24,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:15:24" (3/3) ... [2022-12-14 12:15:24,246 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2c_remove_all.i [2022-12-14 12:15:24,260 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 12:15:24,260 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 12:15:24,294 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 12:15:24,299 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;@acaa6f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 12:15:24,299 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 12:15:24,302 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 12:15:24,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 12:15:24,307 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:15:24,308 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:15:24,308 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:15:24,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:15:24,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1426516169, now seen corresponding path program 1 times [2022-12-14 12:15:24,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:15:24,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748881121] [2022-12-14 12:15:24,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:15:24,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:15:24,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:15:24,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:15:24,548 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:15:24,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748881121] [2022-12-14 12:15:24,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748881121] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:15:24,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:15:24,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 12:15:24,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330694923] [2022-12-14 12:15:24,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:15:24,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:15:24,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:15:24,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:15:24,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:15:24,587 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 12:15:24,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:15:24,645 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2022-12-14 12:15:24,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:15:24,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-12-14 12:15:24,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:15:24,654 INFO L225 Difference]: With dead ends: 25 [2022-12-14 12:15:24,654 INFO L226 Difference]: Without dead ends: 16 [2022-12-14 12:15:24,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:15:24,659 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 1 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:15:24,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 21 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:15:24,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-12-14 12:15:24,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2022-12-14 12:15:24,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 12:15:24,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2022-12-14 12:15:24,686 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10 [2022-12-14 12:15:24,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:15:24,686 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2022-12-14 12:15:24,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 12:15:24,687 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2022-12-14 12:15:24,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 12:15:24,688 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:15:24,688 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:15:24,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 12:15:24,688 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:15:24,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:15:24,689 INFO L85 PathProgramCache]: Analyzing trace with hash -76056382, now seen corresponding path program 1 times [2022-12-14 12:15:24,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:15:24,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558029235] [2022-12-14 12:15:24,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:15:24,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:15:24,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:15:24,845 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 12:15:24,845 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:15:24,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558029235] [2022-12-14 12:15:24,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558029235] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:15:24,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:15:24,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 12:15:24,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364955302] [2022-12-14 12:15:24,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:15:24,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 12:15:24,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:15:24,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 12:15:24,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 12:15:24,849 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 12:15:24,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:15:24,912 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2022-12-14 12:15:24,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 12:15:24,913 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2022-12-14 12:15:24,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:15:24,914 INFO L225 Difference]: With dead ends: 18 [2022-12-14 12:15:24,914 INFO L226 Difference]: Without dead ends: 15 [2022-12-14 12:15:24,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 12:15:24,915 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 5 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:15:24,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 16 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:15:24,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-12-14 12:15:24,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-12-14 12:15:24,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 12:15:24,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-12-14 12:15:24,919 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 16 [2022-12-14 12:15:24,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:15:24,919 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-12-14 12:15:24,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 12:15:24,919 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-12-14 12:15:24,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 12:15:24,920 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:15:24,920 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:15:24,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 12:15:24,920 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:15:24,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:15:24,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1937486543, now seen corresponding path program 1 times [2022-12-14 12:15:24,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:15:24,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12066072] [2022-12-14 12:15:24,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:15:24,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:15:24,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:15:25,051 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 12:15:25,052 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:15:25,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12066072] [2022-12-14 12:15:25,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12066072] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:15:25,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177640050] [2022-12-14 12:15:25,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:15:25,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:15:25,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee494cc7-9745-43bc-a89d-bc24e8192c48/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:15:25,054 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee494cc7-9745-43bc-a89d-bc24e8192c48/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:15:25,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee494cc7-9745-43bc-a89d-bc24e8192c48/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 12:15:25,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:15:25,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 12:15:25,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:15:25,274 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 12:15:25,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:15:25,314 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 12:15:25,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177640050] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:15:25,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [989372946] [2022-12-14 12:15:25,333 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-12-14 12:15:25,334 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:15:25,337 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:15:25,343 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:15:25,343 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:15:25,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:15:25,417 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 12:15:25,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 12:15:25,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:15:25,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 12:15:25,467 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 12:15:25,471 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 12:15:25,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:15:25,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:15:25,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-12-14 12:15:25,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:15:25,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:15:25,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-12-14 12:15:25,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:15:25,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:15:25,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-12-14 12:15:25,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:15:25,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 12:15:25,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:15:25,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 12:15:25,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:15:25,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 12:15:25,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:15:25,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 12:15:25,927 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 12:15:25,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 12:15:25,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 12:15:25,955 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 12:15:25,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 12:15:25,976 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 12:15:25,977 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 12:15:25,979 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 12:15:26,172 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 12:15:26,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:15:26,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 12:15:26,194 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 12:15:26,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:15:26,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-14 12:15:26,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-12-14 12:15:26,228 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 12:15:26,230 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 12:15:26,232 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 12:15:26,233 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 12:15:26,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:15:26,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:15:26,287 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:15:26,296 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 12:15:26,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 30 [2022-12-14 12:15:26,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:15:26,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:15:26,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:15:26,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 18 [2022-12-14 12:15:26,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:15:26,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:15:26,333 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:15:26,345 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 12:15:26,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 34 [2022-12-14 12:15:26,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:15:26,446 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:15:26,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:15:26,448 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:15:26,469 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 12:15:26,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 135 treesize of output 143 [2022-12-14 12:15:26,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:15:26,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:15:26,494 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:15:26,517 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 12:15:26,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 121 treesize of output 138 [2022-12-14 12:15:26,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:15:26,538 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 23 treesize of output 11 [2022-12-14 12:15:26,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:15:26,578 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 47 treesize of output 11 [2022-12-14 12:15:26,603 INFO L321 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-12-14 12:15:26,604 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 105 treesize of output 70 [2022-12-14 12:15:26,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:15:26,614 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 70 treesize of output 56 [2022-12-14 12:15:26,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 34 [2022-12-14 12:15:26,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2022-12-14 12:15:26,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:15:26,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2022-12-14 12:15:26,723 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:15:26,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:15:26,725 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 29 treesize of output 17 [2022-12-14 12:15:26,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:15:26,738 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 29 treesize of output 17 [2022-12-14 12:15:26,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:15:26,755 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 35 treesize of output 7 [2022-12-14 12:15:26,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:15:26,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:15:26,796 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:15:26,797 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:15:26,799 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:15:29,307 INFO L321 Elim1Store]: treesize reduction 475, result has 18.2 percent of original size [2022-12-14 12:15:29,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 22 case distinctions, treesize of input 580 treesize of output 607 [2022-12-14 12:15:29,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:15:29,346 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:15:30,081 INFO L321 Elim1Store]: treesize reduction 551, result has 14.0 percent of original size [2022-12-14 12:15:30,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 23 case distinctions, treesize of input 497 treesize of output 512 [2022-12-14 12:15:30,115 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 0 case distinctions, treesize of input 338 treesize of output 350 [2022-12-14 12:15:30,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 310 treesize of output 338 [2022-12-14 12:15:30,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-12-14 12:15:30,347 INFO L321 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2022-12-14 12:15:30,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 208 treesize of output 217 [2022-12-14 12:15:30,450 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 35 treesize of output 34 [2022-12-14 12:15:30,493 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 74 treesize of output 67 [2022-12-14 12:15:30,517 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 35 treesize of output 34 [2022-12-14 12:15:30,552 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 74 treesize of output 67 [2022-12-14 12:15:30,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:15:30,619 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-14 12:15:30,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 32 treesize of output 27 [2022-12-14 12:15:30,641 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 12:15:30,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:15:30,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:15:30,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:15:30,666 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:15:30,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 32 treesize of output 27 [2022-12-14 12:15:30,705 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 12:15:30,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:15:30,748 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-14 12:15:30,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 32 treesize of output 27 [2022-12-14 12:15:30,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:15:30,794 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:15:30,795 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:15:30,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-12-14 12:15:30,811 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 12:15:30,824 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 12:15:31,025 INFO L321 Elim1Store]: treesize reduction 112, result has 31.3 percent of original size [2022-12-14 12:15:31,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 146 treesize of output 205 [2022-12-14 12:15:31,055 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:15:31,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2022-12-14 12:15:31,077 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 9 treesize of output 7 [2022-12-14 12:15:31,138 INFO L321 Elim1Store]: treesize reduction 36, result has 18.2 percent of original size [2022-12-14 12:15:31,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 92 treesize of output 51 [2022-12-14 12:15:31,245 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:15:31,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 11 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 12 new quantified variables, introduced 0 case distinctions, treesize of input 818 treesize of output 1312 [2022-12-14 12:15:34,191 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:15:34,231 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:15:34,249 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:15:34,257 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:15:34,263 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:15:34,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 40 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 18 new quantified variables, introduced 0 case distinctions, treesize of input 1467 treesize of output 45180 [2022-12-14 12:15:36,908 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:15:36,969 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:15:36,984 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:15:36,989 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:15:37,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 51 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 36 new quantified variables, introduced 0 case distinctions, treesize of input 1812 treesize of output 64809 [2022-12-14 12:15:41,067 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:15:41,250 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:15:41,324 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:15:41,337 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:15:41,351 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:15:41,357 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:15:41,388 INFO L217 Elim1Store]: Index analysis took 139 ms [2022-12-14 12:15:41,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 168 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 167 new quantified variables, introduced 0 case distinctions, treesize of input 7616 treesize of output 855741 [2022-12-14 12:18:39,999 WARN L233 SmtUtils]: Spent 2.97m on a formula simplification. DAG size of input: 177177 DAG size of output: 177176 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-14 12:26:13,759 WARN L233 SmtUtils]: Spent 2.96m on a formula simplification that was a NOOP. DAG size: 177108 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)