./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.safe_linked_list_fifo_n2d4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/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_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.safe_linked_list_fifo_n2d4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/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 64bit --witnessprinter.graph.data.programhash e21b5d9af58d503b543d8ada0d1f774dde2fb8cf43da8014b4dc75fe011ac352 --- 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 08:51:22,106 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 08:51:22,108 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 08:51:22,127 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 08:51:22,128 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 08:51:22,129 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 08:51:22,130 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 08:51:22,131 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 08:51:22,133 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 08:51:22,134 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 08:51:22,134 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 08:51:22,136 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 08:51:22,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 08:51:22,137 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 08:51:22,138 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 08:51:22,139 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 08:51:22,140 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 08:51:22,140 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 08:51:22,142 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 08:51:22,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 08:51:22,145 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 08:51:22,146 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 08:51:22,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 08:51:22,148 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 08:51:22,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 08:51:22,152 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 08:51:22,152 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 08:51:22,153 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 08:51:22,154 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 08:51:22,155 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 08:51:22,155 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 08:51:22,156 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 08:51:22,156 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 08:51:22,157 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 08:51:22,158 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 08:51:22,158 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 08:51:22,158 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 08:51:22,159 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 08:51:22,159 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 08:51:22,160 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 08:51:22,160 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 08:51:22,161 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 08:51:22,179 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 08:51:22,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 08:51:22,180 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 08:51:22,180 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 08:51:22,181 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 08:51:22,181 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 08:51:22,181 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 08:51:22,181 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 08:51:22,181 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 08:51:22,181 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 08:51:22,182 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 08:51:22,182 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 08:51:22,182 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 08:51:22,182 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 08:51:22,182 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 08:51:22,182 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 08:51:22,183 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 08:51:22,183 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 08:51:22,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 08:51:22,184 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 08:51:22,184 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 08:51:22,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 08:51:22,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 08:51:22,184 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 08:51:22,184 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 08:51:22,185 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 08:51:22,185 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 08:51:22,185 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 08:51:22,185 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 08:51:22,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:51:22,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 08:51:22,186 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 08:51:22,186 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 08:51:22,186 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 08:51:22,186 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 08:51:22,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 08:51:22,187 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 08:51:22,187 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 08:51:22,187 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_2613d2bd-5e79-498d-a38d-b93c1f858697/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e21b5d9af58d503b543d8ada0d1f774dde2fb8cf43da8014b4dc75fe011ac352 [2022-12-14 08:51:22,387 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 08:51:22,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 08:51:22,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 08:51:22,410 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 08:51:22,410 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 08:51:22,411 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.safe_linked_list_fifo_n2d4.c [2022-12-14 08:51:24,980 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 08:51:25,227 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 08:51:25,228 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.safe_linked_list_fifo_n2d4.c [2022-12-14 08:51:25,245 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/data/c4c69f519/b04500bfa8474d5d8183bdad518d62ee/FLAG378ad79ce [2022-12-14 08:51:25,258 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/data/c4c69f519/b04500bfa8474d5d8183bdad518d62ee [2022-12-14 08:51:25,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 08:51:25,262 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 08:51:25,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 08:51:25,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 08:51:25,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 08:51:25,267 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:51:25" (1/1) ... [2022-12-14 08:51:25,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d042d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:25, skipping insertion in model container [2022-12-14 08:51:25,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:51:25" (1/1) ... [2022-12-14 08:51:25,274 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 08:51:25,320 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 08:51:25,448 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_2613d2bd-5e79-498d-a38d-b93c1f858697/sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.safe_linked_list_fifo_n2d4.c[1107,1120] [2022-12-14 08:51:25,677 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:51:25,687 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 08:51:25,695 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.safe_linked_list_fifo_n2d4.c[1107,1120] [2022-12-14 08:51:25,790 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:51:25,800 INFO L208 MainTranslator]: Completed translation [2022-12-14 08:51:25,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:25 WrapperNode [2022-12-14 08:51:25,800 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 08:51:25,801 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 08:51:25,801 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 08:51:25,801 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 08:51:25,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:25" (1/1) ... [2022-12-14 08:51:25,851 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:25" (1/1) ... [2022-12-14 08:51:25,932 INFO L138 Inliner]: procedures = 15, calls = 102, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1472 [2022-12-14 08:51:25,932 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 08:51:25,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 08:51:25,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 08:51:25,933 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 08:51:25,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:25" (1/1) ... [2022-12-14 08:51:25,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:25" (1/1) ... [2022-12-14 08:51:25,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:25" (1/1) ... [2022-12-14 08:51:25,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:25" (1/1) ... [2022-12-14 08:51:25,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:25" (1/1) ... [2022-12-14 08:51:25,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:25" (1/1) ... [2022-12-14 08:51:26,002 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:25" (1/1) ... [2022-12-14 08:51:26,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:25" (1/1) ... [2022-12-14 08:51:26,020 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 08:51:26,021 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 08:51:26,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 08:51:26,021 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 08:51:26,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:25" (1/1) ... [2022-12-14 08:51:26,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:51:26,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:51:26,050 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 08:51:26,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 08:51:26,077 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 08:51:26,077 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 08:51:26,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 08:51:26,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 08:51:26,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 08:51:26,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 08:51:26,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 08:51:26,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 08:51:26,323 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 08:51:26,325 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 08:51:28,402 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 08:51:28,591 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 08:51:28,591 INFO L300 CfgBuilder]: Removed 19 assume(true) statements. [2022-12-14 08:51:28,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:51:28 BoogieIcfgContainer [2022-12-14 08:51:28,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 08:51:28,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 08:51:28,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 08:51:28,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 08:51:28,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 08:51:25" (1/3) ... [2022-12-14 08:51:28,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53247f01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:51:28, skipping insertion in model container [2022-12-14 08:51:28,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:25" (2/3) ... [2022-12-14 08:51:28,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53247f01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:51:28, skipping insertion in model container [2022-12-14 08:51:28,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:51:28" (3/3) ... [2022-12-14 08:51:28,600 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.safe_linked_list_fifo_n2d4.c [2022-12-14 08:51:28,614 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 08:51:28,614 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 08:51:28,649 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 08:51:28,654 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;@3540322, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 08:51:28,654 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 08:51:28,658 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 30 states have internal predecessors, (50), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 08:51:28,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-14 08:51:28,664 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:51:28,664 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:51:28,665 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:51:28,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:51:28,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1901032191, now seen corresponding path program 1 times [2022-12-14 08:51:28,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:51:28,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402455655] [2022-12-14 08:51:28,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:51:28,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:51:28,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:51:29,216 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 08:51:29,217 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:51:29,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402455655] [2022-12-14 08:51:29,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402455655] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:51:29,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:51:29,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:51:29,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004325229] [2022-12-14 08:51:29,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:51:29,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:51:29,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:51:29,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:51:29,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:51:29,255 INFO L87 Difference]: Start difference. First operand has 37 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 30 states have internal predecessors, (50), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-14 08:51:30,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:51:30,279 INFO L93 Difference]: Finished difference Result 72 states and 119 transitions. [2022-12-14 08:51:30,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:51:30,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 27 [2022-12-14 08:51:30,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:51:30,286 INFO L225 Difference]: With dead ends: 72 [2022-12-14 08:51:30,286 INFO L226 Difference]: Without dead ends: 37 [2022-12-14 08:51:30,288 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 08:51:30,290 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:51:30,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-14 08:51:30,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-12-14 08:51:30,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-12-14 08:51:30,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 states have internal predecessors, (49), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 08:51:30,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 59 transitions. [2022-12-14 08:51:30,316 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 59 transitions. Word has length 27 [2022-12-14 08:51:30,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:51:30,316 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 59 transitions. [2022-12-14 08:51:30,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-14 08:51:30,316 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 59 transitions. [2022-12-14 08:51:30,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-14 08:51:30,317 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:51:30,318 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:51:30,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 08:51:30,318 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:51:30,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:51:30,318 INFO L85 PathProgramCache]: Analyzing trace with hash 816922241, now seen corresponding path program 1 times [2022-12-14 08:51:30,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:51:30,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122267502] [2022-12-14 08:51:30,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:51:30,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:51:30,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:51:30,662 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 08:51:30,662 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:51:30,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122267502] [2022-12-14 08:51:30,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122267502] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:51:30,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842619737] [2022-12-14 08:51:30,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:51:30,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:51:30,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:51:30,664 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:51:30,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 08:51:31,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:51:31,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 08:51:31,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:51:31,076 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 08:51:31,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:51:31,105 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 08:51:31,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842619737] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 08:51:31,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 08:51:31,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2022-12-14 08:51:31,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639439880] [2022-12-14 08:51:31,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:51:31,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:51:31,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:51:31,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:51:31,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 08:51:31,108 INFO L87 Difference]: Start difference. First operand 37 states and 59 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-14 08:51:31,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:51:31,896 INFO L93 Difference]: Finished difference Result 70 states and 112 transitions. [2022-12-14 08:51:31,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:51:31,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 28 [2022-12-14 08:51:31,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:51:31,897 INFO L225 Difference]: With dead ends: 70 [2022-12-14 08:51:31,897 INFO L226 Difference]: Without dead ends: 38 [2022-12-14 08:51:31,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 08:51:31,898 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-14 08:51:31,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-14 08:51:31,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-12-14 08:51:31,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-12-14 08:51:31,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 31 states have internal predecessors, (50), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 08:51:31,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 60 transitions. [2022-12-14 08:51:31,903 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 60 transitions. Word has length 28 [2022-12-14 08:51:31,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:51:31,903 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 60 transitions. [2022-12-14 08:51:31,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-14 08:51:31,903 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 60 transitions. [2022-12-14 08:51:31,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-14 08:51:31,904 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:51:31,904 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:51:31,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 08:51:32,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:51:32,105 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:51:32,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:51:32,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1477751752, now seen corresponding path program 1 times [2022-12-14 08:51:32,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:51:32,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748342766] [2022-12-14 08:51:32,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:51:32,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:51:32,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:51:32,408 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 08:51:32,408 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:51:32,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748342766] [2022-12-14 08:51:32,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748342766] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:51:32,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492172189] [2022-12-14 08:51:32,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:51:32,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:51:32,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:51:32,411 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:51:32,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 08:51:33,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:51:33,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 08:51:33,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:51:33,106 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 08:51:33,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:51:33,126 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 08:51:33,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492172189] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 08:51:33,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 08:51:33,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2022-12-14 08:51:33,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959147181] [2022-12-14 08:51:33,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:51:33,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:51:33,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:51:33,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:51:33,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 08:51:33,129 INFO L87 Difference]: Start difference. First operand 38 states and 60 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-14 08:51:33,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:51:33,477 INFO L93 Difference]: Finished difference Result 73 states and 116 transitions. [2022-12-14 08:51:33,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:51:33,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 29 [2022-12-14 08:51:33,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:51:33,478 INFO L225 Difference]: With dead ends: 73 [2022-12-14 08:51:33,479 INFO L226 Difference]: Without dead ends: 39 [2022-12-14 08:51:33,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 08:51:33,480 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 08:51:33,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 08:51:33,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-12-14 08:51:33,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-12-14 08:51:33,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.59375) internal successors, (51), 32 states have internal predecessors, (51), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 08:51:33,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 61 transitions. [2022-12-14 08:51:33,487 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 61 transitions. Word has length 29 [2022-12-14 08:51:33,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:51:33,487 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 61 transitions. [2022-12-14 08:51:33,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-14 08:51:33,487 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 61 transitions. [2022-12-14 08:51:33,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-14 08:51:33,488 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:51:33,488 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:51:33,495 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 08:51:33,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:51:33,690 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:51:33,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:51:33,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1560105185, now seen corresponding path program 1 times [2022-12-14 08:51:33,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:51:33,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745326501] [2022-12-14 08:51:33,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:51:33,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:51:33,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:51:33,964 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 08:51:33,964 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:51:33,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745326501] [2022-12-14 08:51:33,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745326501] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:51:33,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761652738] [2022-12-14 08:51:33,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:51:33,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:51:33,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:51:33,966 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:51:33,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 08:51:34,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:51:34,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-14 08:51:34,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:51:34,781 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 08:51:34,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:51:34,807 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 08:51:34,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761652738] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:51:34,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1589740044] [2022-12-14 08:51:34,823 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2022-12-14 08:51:34,823 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:51:34,826 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:51:34,830 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:51:34,830 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:51:34,946 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 08:51:34,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 17 [2022-12-14 08:51:35,101 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 31 [2022-12-14 08:51:35,654 INFO L321 Elim1Store]: treesize reduction 41, result has 26.8 percent of original size [2022-12-14 08:51:35,655 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 1 case distinctions, treesize of input 652 treesize of output 659 [2022-12-14 08:51:36,378 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 41 treesize of output 37 [2022-12-14 08:51:36,481 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 08:51:36,520 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 08:51:36,588 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 31 [2022-12-14 08:51:37,012 INFO L321 Elim1Store]: treesize reduction 41, result has 26.8 percent of original size [2022-12-14 08:51:37,013 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 1 case distinctions, treesize of input 492 treesize of output 499 [2022-12-14 08:51:37,556 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 41 treesize of output 37 [2022-12-14 08:51:37,685 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 08:51:37,701 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 08:51:37,933 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 41 treesize of output 37 [2022-12-14 08:51:38,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:51:38,348 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 97 treesize of output 96 [2022-12-14 08:51:38,593 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 41 treesize of output 37 [2022-12-14 08:51:44,189 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 10 for LOIs [2022-12-14 08:51:44,190 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:52:05,246 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1128#(and (<= 1 |ULTIMATE.start_main_~var_93_arg_0~0#1|) (<= 0 |ULTIMATE.start_main_~var_25_arg_0~0#1|) (<= 33554432 |ULTIMATE.start_main_~msb_SORT_234~0#1|) (<= (+ |ULTIMATE.start_main_~mask_SORT_240~0#1| 1) 0) (<= (+ |ULTIMATE.start_main_~mask_SORT_238~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_240~0#1| 1)) (<= 1023 |ULTIMATE.start_main_~mask_SORT_202~0#1|) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_244~0#1| 1)) (<= 0 |ULTIMATE.start_main_~var_21~0#1|) (<= 2097152 |ULTIMATE.start_main_~msb_SORT_226~0#1|) (<= |ULTIMATE.start_main_~msb_SORT_216~0#1| 65536) (<= |ULTIMATE.start_main_~msb_SORT_212~0#1| 16384) (<= 2147483648 |ULTIMATE.start_main_~msb_SORT_156~0#1|) (<= |ULTIMATE.start_main_~var_530~0#1| 1) (<= |ULTIMATE.start_main_~#state_13~0#1.offset| 0) (<= 4096 |ULTIMATE.start_main_~msb_SORT_208~0#1|) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_222~0#1| 1)) (<= 7 |ULTIMATE.start_main_~mask_SORT_19~0#1|) (<= 0 |#NULL.base|) (<= |ULTIMATE.start_main_~msb_SORT_214~0#1| 32768) (<= |ULTIMATE.start_main_~msb_SORT_191~0#1| 8) (<= |ULTIMATE.start_main_~msb_SORT_156~0#1| 2147483648) (<= 0 |ULTIMATE.start_main_~#state_249~0#1.offset|) (<= |ULTIMATE.start_main_~msb_SORT_226~0#1| 2097152) (<= |ULTIMATE.start_main_~mask_SORT_200~0#1| 511) (<= |ULTIMATE.start_main_~msb_SORT_197~0#1| 64) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_232~0#1| 1)) (<= (+ |ULTIMATE.start_main_~mask_SORT_242~0#1| 1) 0) (<= 256 |ULTIMATE.start_main_~msb_SORT_200~0#1|) (<= |ULTIMATE.start_main_~var_24~0#1| 1) (<= 0 |ULTIMATE.start_main_~var_22_arg_0~0#1|) (<= 1 |ULTIMATE.start_main_~var_530~0#1|) (<= 0 |ULTIMATE.start_main_~#state_13~0#1.base|) (<= 0 |ULTIMATE.start_main_~var_50_arg_1~0#1|) (<= |ULTIMATE.start_main_~var_50_arg_1~0#1| 0) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_242~0#1| 1)) (<= 0 |ULTIMATE.start_main_~var_508~0#1|) (<= |ULTIMATE.start_main_~var_513~0#1| 3) (<= 0 |ULTIMATE.start_main_~i~1#1|) (<= |ULTIMATE.start_main_~var_93_arg_0~0#1| 1) (<= 0 |ULTIMATE.start_main_~var_92~0#1|) (<= |ULTIMATE.start_main_~mask_SORT_197~0#1| 127) (<= (+ |ULTIMATE.start_main_~mask_SORT_232~0#1| 1) 0) (<= 0 |ULTIMATE.start_main_~var_52_arg_0~0#1|) (<= |ULTIMATE.start_main_~var_83_arg_0~0#1| 1) (<= 0 |ULTIMATE.start_main_~var_51~0#1|) (<= |ULTIMATE.start_main_~mask_SORT_19~0#1| 7) (<= 8192 |ULTIMATE.start_main_~msb_SORT_210~0#1|) (<= |ULTIMATE.start_main_~var_539~0#1| 2) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_236~0#1| 1)) (<= |ULTIMATE.start_main_~var_21~0#1| 1) (<= 0 |ULTIMATE.start_main_~var_30~0#1|) (<= 1024 |ULTIMATE.start_main_~msb_SORT_204~0#1|) (<= |ULTIMATE.start_main_~msb_SORT_234~0#1| 33554432) (<= |ULTIMATE.start_main_~var_25_arg_0~0#1| 1) (<= |ULTIMATE.start_main_~var_16_arg_0~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#state_13~0#1.offset|) (<= |ULTIMATE.start_main_~msb_SORT_242~0#1| 536870912) (<= (+ |ULTIMATE.start_main_~mask_SORT_224~0#1| 1) 0) (<= 536870912 |ULTIMATE.start_main_~msb_SORT_242~0#1|) (<= 0 |ULTIMATE.start_main_~#state_249~0#1.base|) (<= |ULTIMATE.start_main_~mask_SORT_206~0#1| 4095) (<= |ULTIMATE.start_main_~mask_SORT_204~0#1| 2047) (<= 0 |ULTIMATE.start_main_~var_16_arg_0~0#1.offset|) (<= |ULTIMATE.start_main_~mask_SORT_193~0#1| 31) (<= 2 |ULTIMATE.start_main_~var_539~0#1|) (<= |ULTIMATE.start_main_~var_51~0#1| 1) (<= (+ |ULTIMATE.start_main_~mask_SORT_236~0#1| 1) 0) (<= 0 |ULTIMATE.start_main_~var_17_arg_0~0#1.base|) (<= 4 |ULTIMATE.start_main_~msb_SORT_19~0#1|) (<= 1 |ULTIMATE.start_main_~var_77_arg_0~0#1|) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_220~0#1| 1)) (<= |ULTIMATE.start_main_~mask_SORT_202~0#1| 1023) (<= 32768 |ULTIMATE.start_main_~msb_SORT_214~0#1|) (<= 16777216 |ULTIMATE.start_main_~msb_SORT_232~0#1|) (<= |ULTIMATE.start_main_~#state_249~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~i~2#1|) (<= |ULTIMATE.start_main_~msb_SORT_228~0#1| 4194304) (<= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_224~0#1| 1)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= |ULTIMATE.start_main_~msb_SORT_193~0#1| 16) (<= 131072 |ULTIMATE.start_main_~msb_SORT_218~0#1|) (<= |ULTIMATE.start_main_~msb_SORT_210~0#1| 8192) (<= |ULTIMATE.start_main_~msb_SORT_206~0#1| 2048) (<= |ULTIMATE.start_main_~var_60~0#1| 0) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_156~0#1| 1)) (<= (+ |ULTIMATE.start_main_~mask_SORT_216~0#1| 1) 0) (<= 134217728 |ULTIMATE.start_main_~msb_SORT_238~0#1|) (<= |ULTIMATE.start_main_~var_89_arg_0~0#1| 1) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_234~0#1| 1)) (<= |ULTIMATE.start_main_~var_508~0#1| 0) (<= 4194304 |ULTIMATE.start_main_~msb_SORT_228~0#1|) (<= 128 |ULTIMATE.start_main_~msb_SORT_3~0#1|) (<= 64 |ULTIMATE.start_main_~msb_SORT_197~0#1|) (<= 1 |ULTIMATE.start_main_~mask_SORT_1~0#1|) (<= |ULTIMATE.start_main_~var_92~0#1| 1) (<= 1 |ULTIMATE.start_main_~var_83_arg_0~0#1|) (<= |ULTIMATE.start_main_~var_37~0#1| 1) (<= |ULTIMATE.start_main_~var_80_arg_0~0#1| 1) (<= |ULTIMATE.start_main_~var_401~0#1| 0) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_226~0#1| 1)) (<= |ULTIMATE.start_main_~msb_SORT_202~0#1| 512) (<= |ULTIMATE.start_main_~var_29~0#1| 4) (<= 1 |ULTIMATE.start_main_~state_61~0#1|) (<= |ULTIMATE.start_main_~msb_SORT_11~0#1| 2) (<= 0 |ULTIMATE.start_main_~var_37~0#1|) (<= |ULTIMATE.start_main_~init_62_arg_1~0#1| 1) (<= 65535 |ULTIMATE.start_main_~mask_SORT_214~0#1|) (<= (+ |ULTIMATE.start_main_~mask_SORT_218~0#1| 1) 0) (<= |ULTIMATE.start_main_~mask_SORT_3~0#1| 255) (<= |ULTIMATE.start_main_~var_59~0#1| 1) (<= (+ |ULTIMATE.start_main_~mask_SORT_220~0#1| 1) 0) (<= |ULTIMATE.start_main_~state_61~0#1| 1) (<= 127 |ULTIMATE.start_main_~mask_SORT_197~0#1|) (<= 0 |ULTIMATE.start_main_~var_24~0#1|) (<= (+ |ULTIMATE.start_main_~mask_SORT_228~0#1| 1) 0) (<= |ULTIMATE.start_main_~msb_SORT_232~0#1| 16777216) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_228~0#1| 1)) (<= 2048 |ULTIMATE.start_main_~msb_SORT_206~0#1|) (<= |ULTIMATE.start_main_~var_30_arg_1~0#1| 4) (<= 0 |ULTIMATE.start_main_~#state_15~0#1.offset|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 4 |ULTIMATE.start_main_~var_30_arg_1~0#1|) (<= 67108864 |ULTIMATE.start_main_~msb_SORT_236~0#1|) (<= 262144 |ULTIMATE.start_main_~msb_SORT_220~0#1|) (<= (+ |ULTIMATE.start_main_~mask_SORT_222~0#1| 1) 0) (<= |ULTIMATE.start_main_~msb_SORT_224~0#1| 1048576) (<= 0 |ULTIMATE.start_main_~var_57_arg_1~0#1|) (<= 511 |ULTIMATE.start_main_~mask_SORT_200~0#1|) (<= |ULTIMATE.start_main_~mask_SORT_195~0#1| 63) (<= 2047 |ULTIMATE.start_main_~mask_SORT_204~0#1|) (<= |ULTIMATE.start_main_~msb_SORT_3~0#1| 128) (<= 4 |ULTIMATE.start_main_~var_29~0#1|) (<= |ULTIMATE.start_main_~mask_SORT_208~0#1| 8191) (<= |ULTIMATE.start_main_~var_17_arg_0~0#1.offset| 0) (<= 1 |ULTIMATE.start_main_~var_63_arg_2~0#1|) (<= |ULTIMATE.start_main_~var_38_arg_1~0#1| 1) (<= 1 |ULTIMATE.start_main_~var_63_arg_0~0#1|) (<= 0 |ULTIMATE.start_main_~var_60~0#1|) (<= 1 |ULTIMATE.start_main_~var_59~0#1|) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (<= |ULTIMATE.start_main_~msb_SORT_204~0#1| 1024) (<= 32 |ULTIMATE.start_main_~msb_SORT_195~0#1|) (<= |#NULL.base| 0) (<= 0 |ULTIMATE.start_main_~var_80_arg_0~0#1|) (<= (+ |ULTIMATE.start_main_~mask_SORT_230~0#1| 1) 0) (<= 31 |ULTIMATE.start_main_~mask_SORT_193~0#1|) (<= 1 |ULTIMATE.start_main_~var_92_arg_0~0#1|) (<= 8 |ULTIMATE.start_main_~msb_SORT_191~0#1|) (<= |ULTIMATE.start_main_~var_30~0#1| 1) (<= |ULTIMATE.start_main_~var_49~0#1| 0) (<= 268435456 |ULTIMATE.start_main_~msb_SORT_240~0#1|) (<= 0 |ULTIMATE.start_main_~var_17_arg_0~0#1.offset|) (<= |ULTIMATE.start_main_~msb_SORT_222~0#1| 524288) (<= |ULTIMATE.start_main_~mask_SORT_210~0#1| 16383) (<= 4095 |ULTIMATE.start_main_~mask_SORT_206~0#1|) (<= 8388608 |ULTIMATE.start_main_~msb_SORT_230~0#1|) (<= 15 |ULTIMATE.start_main_~mask_SORT_191~0#1|) (<= |ULTIMATE.start_main_~msb_SORT_200~0#1| 256) (<= |ULTIMATE.start_main_~var_63_arg_0~0#1| 1) (<= 2 |ULTIMATE.start_main_~msb_SORT_11~0#1|) (<= |ULTIMATE.start_main_~var_22_arg_0~0#1| 1) (<= 16384 |ULTIMATE.start_main_~msb_SORT_212~0#1|) (<= 16383 |ULTIMATE.start_main_~mask_SORT_210~0#1|) (<= |ULTIMATE.start_main_~msb_SORT_230~0#1| 8388608) (<= |ULTIMATE.start_main_~msb_SORT_208~0#1| 4096) (<= 3 |ULTIMATE.start_main_~mask_SORT_11~0#1|) (<= 63 |ULTIMATE.start_main_~mask_SORT_195~0#1|) (<= |ULTIMATE.start_main_~mask_SORT_191~0#1| 15) (<= |ULTIMATE.start_main_~#state_15~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~var_94_arg_0~0#1|) (<= 1 |ULTIMATE.start_main_~msb_SORT_1~0#1|) (<= (+ |ULTIMATE.start_main_~mask_SORT_226~0#1| 1) 0) (<= 1048576 |ULTIMATE.start_main_~msb_SORT_224~0#1|) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 255 |ULTIMATE.start_main_~mask_SORT_3~0#1|) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_238~0#1| 1)) (<= (+ |ULTIMATE.start_main_~mask_SORT_156~0#1| 1) 0) (<= |ULTIMATE.start_main_~msb_SORT_240~0#1| 268435456) (<= |ULTIMATE.start_main_~mask_SORT_11~0#1| 3) (<= |ULTIMATE.start_main_~var_77_arg_0~0#1| 1) (<= |ULTIMATE.start_main_~var_57_arg_1~0#1| 1) (<= 0 |ULTIMATE.start_main_~var_49~0#1|) (<= 16 |ULTIMATE.start_main_~msb_SORT_193~0#1|) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_main_~var_63_arg_1~0#1|) (<= |ULTIMATE.start_main_~mask_SORT_214~0#1| 65535) (<= 32767 |ULTIMATE.start_main_~mask_SORT_212~0#1|) (<= |ULTIMATE.start_main_~var_92_arg_0~0#1| 1) (<= |ULTIMATE.start_main_~msb_SORT_236~0#1| 67108864) (<= 1 |ULTIMATE.start_main_~init_62_arg_1~0#1|) (<= |ULTIMATE.start_main_~var_56~0#1| 1) (<= |ULTIMATE.start_main_~msb_SORT_1~0#1| 1) (<= |ULTIMATE.start_main_~var_52_arg_0~0#1| 1) (<= 512 |ULTIMATE.start_main_~msb_SORT_202~0#1|) (<= |ULTIMATE.start_main_~msb_SORT_220~0#1| 262144) (<= 0 |ULTIMATE.start_main_~var_401~0#1|) (<= |ULTIMATE.start_main_~mask_SORT_212~0#1| 32767) (<= 8191 |ULTIMATE.start_main_~mask_SORT_208~0#1|) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_216~0#1| 1)) (<= 0 |ULTIMATE.start_main_~#state_15~0#1.base|) (<= |ULTIMATE.start_main_~msb_SORT_238~0#1| 134217728) (<= 1073741824 |ULTIMATE.start_main_~msb_SORT_244~0#1|) (<= |ULTIMATE.start_main_~msb_SORT_218~0#1| 131072) (<= |ULTIMATE.start_main_~msb_SORT_19~0#1| 4) (<= 0 |#StackHeapBarrier|) (<= 524288 |ULTIMATE.start_main_~msb_SORT_222~0#1|) (<= |ULTIMATE.start_main_~var_94_arg_0~0#1| 1) (<= |ULTIMATE.start_main_~var_63_arg_1~0#1| 0) (<= 0 |ULTIMATE.start_main_~var_38_arg_1~0#1|) (<= (+ |ULTIMATE.start_main_~mask_SORT_244~0#1| 1) 0) (<= 1 |ULTIMATE.start_main_~var_70_arg_0~0#1|) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_218~0#1| 1)) (<= 3 |ULTIMATE.start_main_~var_513~0#1|) (<= |ULTIMATE.start_main_~mask_SORT_1~0#1| 1) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_230~0#1| 1)) (<= 65536 |ULTIMATE.start_main_~msb_SORT_216~0#1|) (<= 0 |ULTIMATE.start_main_~var_56~0#1|) (<= (+ |ULTIMATE.start_main_~mask_SORT_234~0#1| 1) 0) (<= |ULTIMATE.start_main_~msb_SORT_195~0#1| 32) (<= |ULTIMATE.start_main_~msb_SORT_244~0#1| 1073741824) (<= 0 |ULTIMATE.start_main_~var_16_arg_0~0#1.base|) (<= |ULTIMATE.start_main_~var_70_arg_0~0#1| 1) (<= |ULTIMATE.start_main_~var_63_arg_2~0#1| 1) (<= 1 |ULTIMATE.start_main_~var_89_arg_0~0#1|))' at error location [2022-12-14 08:52:05,247 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 08:52:05,247 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:52:05,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 8 [2022-12-14 08:52:05,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105657170] [2022-12-14 08:52:05,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 08:52:05,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 08:52:05,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:52:05,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 08:52:05,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2022-12-14 08:52:05,249 INFO L87 Difference]: Start difference. First operand 39 states and 61 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-12-14 08:52:05,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:52:05,726 INFO L93 Difference]: Finished difference Result 78 states and 124 transitions. [2022-12-14 08:52:05,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 08:52:05,726 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 30 [2022-12-14 08:52:05,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:52:05,727 INFO L225 Difference]: With dead ends: 78 [2022-12-14 08:52:05,727 INFO L226 Difference]: Without dead ends: 42 [2022-12-14 08:52:05,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 21.1s TimeCoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2022-12-14 08:52:05,728 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 08:52:05,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 08:52:05,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-12-14 08:52:05,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-12-14 08:52:05,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 35 states have (on average 1.542857142857143) internal successors, (54), 35 states have internal predecessors, (54), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 08:52:05,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 64 transitions. [2022-12-14 08:52:05,732 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 64 transitions. Word has length 30 [2022-12-14 08:52:05,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:52:05,732 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 64 transitions. [2022-12-14 08:52:05,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-12-14 08:52:05,732 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 64 transitions. [2022-12-14 08:52:05,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-14 08:52:05,732 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:52:05,732 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:52:05,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-14 08:52:05,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:52:05,934 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:52:05,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:52:05,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1309371549, now seen corresponding path program 2 times [2022-12-14 08:52:05,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:52:05,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901043897] [2022-12-14 08:52:05,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:52:05,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:52:06,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:52:06,214 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-14 08:52:06,215 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:52:06,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901043897] [2022-12-14 08:52:06,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901043897] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:52:06,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289001670] [2022-12-14 08:52:06,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 08:52:06,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:52:06,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:52:06,216 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:52:06,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 08:52:06,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-14 08:52:06,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:52:06,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 36 conjunts are in the unsatisfiable core [2022-12-14 08:52:06,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:52:07,451 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-14 08:52:07,451 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:52:07,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289001670] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:52:07,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 08:52:07,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-12-14 08:52:07,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301242263] [2022-12-14 08:52:07,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:52:07,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:52:07,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:52:07,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:52:07,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:52:07,453 INFO L87 Difference]: Start difference. First operand 42 states and 64 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-14 08:52:08,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:52:08,781 INFO L93 Difference]: Finished difference Result 83 states and 130 transitions. [2022-12-14 08:52:08,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 08:52:08,782 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 33 [2022-12-14 08:52:08,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:52:08,783 INFO L225 Difference]: With dead ends: 83 [2022-12-14 08:52:08,783 INFO L226 Difference]: Without dead ends: 81 [2022-12-14 08:52:08,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-12-14 08:52:08,784 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 152 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-14 08:52:08,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 71 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-14 08:52:08,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-12-14 08:52:08,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 54. [2022-12-14 08:52:08,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 42 states have internal predecessors, (61), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 08:52:08,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 81 transitions. [2022-12-14 08:52:08,792 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 81 transitions. Word has length 33 [2022-12-14 08:52:08,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:52:08,792 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 81 transitions. [2022-12-14 08:52:08,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-14 08:52:08,792 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 81 transitions. [2022-12-14 08:52:08,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-14 08:52:08,793 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:52:08,793 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:52:08,799 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 08:52:08,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:52:08,995 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:52:08,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:52:08,996 INFO L85 PathProgramCache]: Analyzing trace with hash -590809255, now seen corresponding path program 1 times [2022-12-14 08:52:08,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:52:08,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871562896] [2022-12-14 08:52:08,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:52:08,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:52:09,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:52:09,929 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-12-14 08:52:09,930 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:52:09,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871562896] [2022-12-14 08:52:09,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871562896] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:52:09,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716432235] [2022-12-14 08:52:09,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:52:09,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:52:09,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:52:09,931 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:52:09,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 08:52:10,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:52:10,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 2722 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 08:52:10,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:52:10,678 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-12-14 08:52:10,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:52:10,703 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-12-14 08:52:10,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716432235] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 08:52:10,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 08:52:10,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2022-12-14 08:52:10,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731319042] [2022-12-14 08:52:10,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:52:10,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:52:10,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:52:10,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:52:10,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 08:52:10,706 INFO L87 Difference]: Start difference. First operand 54 states and 81 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 08:52:11,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:52:11,639 INFO L93 Difference]: Finished difference Result 87 states and 134 transitions. [2022-12-14 08:52:11,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:52:11,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 71 [2022-12-14 08:52:11,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:52:11,640 INFO L225 Difference]: With dead ends: 87 [2022-12-14 08:52:11,640 INFO L226 Difference]: Without dead ends: 55 [2022-12-14 08:52:11,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 08:52:11,641 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 08:52:11,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 08:52:11,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-12-14 08:52:11,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-12-14 08:52:11,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 43 states have (on average 1.441860465116279) internal successors, (62), 43 states have internal predecessors, (62), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 08:52:11,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 82 transitions. [2022-12-14 08:52:11,647 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 82 transitions. Word has length 71 [2022-12-14 08:52:11,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:52:11,647 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 82 transitions. [2022-12-14 08:52:11,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 08:52:11,647 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 82 transitions. [2022-12-14 08:52:11,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-12-14 08:52:11,648 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:52:11,648 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:52:11,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 08:52:11,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 08:52:11,850 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:52:11,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:52:11,851 INFO L85 PathProgramCache]: Analyzing trace with hash 151089609, now seen corresponding path program 1 times [2022-12-14 08:52:11,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:52:11,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223648716] [2022-12-14 08:52:11,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:52:11,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:52:12,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:52:12,633 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-12-14 08:52:12,633 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:52:12,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223648716] [2022-12-14 08:52:12,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223648716] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:52:12,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398877545] [2022-12-14 08:52:12,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:52:12,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:52:12,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:52:12,635 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:52:12,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 08:52:13,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:52:13,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 2729 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 08:52:13,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:52:13,313 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-12-14 08:52:13,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:52:13,338 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-12-14 08:52:13,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398877545] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 08:52:13,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 08:52:13,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2022-12-14 08:52:13,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879667810] [2022-12-14 08:52:13,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:52:13,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:52:13,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:52:13,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:52:13,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 08:52:13,340 INFO L87 Difference]: Start difference. First operand 55 states and 82 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 08:52:13,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:52:13,765 INFO L93 Difference]: Finished difference Result 89 states and 136 transitions. [2022-12-14 08:52:13,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:52:13,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 72 [2022-12-14 08:52:13,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:52:13,766 INFO L225 Difference]: With dead ends: 89 [2022-12-14 08:52:13,766 INFO L226 Difference]: Without dead ends: 56 [2022-12-14 08:52:13,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 08:52:13,767 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 08:52:13,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 08:52:13,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-12-14 08:52:13,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-12-14 08:52:13,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 44 states have (on average 1.4318181818181819) internal successors, (63), 44 states have internal predecessors, (63), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 08:52:13,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 83 transitions. [2022-12-14 08:52:13,776 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 83 transitions. Word has length 72 [2022-12-14 08:52:13,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:52:13,776 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 83 transitions. [2022-12-14 08:52:13,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 08:52:13,777 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 83 transitions. [2022-12-14 08:52:13,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-14 08:52:13,778 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:52:13,778 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:52:13,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 08:52:13,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:52:13,979 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:52:13,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:52:13,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1003971875, now seen corresponding path program 1 times [2022-12-14 08:52:13,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:52:13,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959059923] [2022-12-14 08:52:13,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:52:13,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:52:14,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:52:14,739 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-12-14 08:52:14,739 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:52:14,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959059923] [2022-12-14 08:52:14,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959059923] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:52:14,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662472834] [2022-12-14 08:52:14,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:52:14,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:52:14,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:52:14,741 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:52:14,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 08:52:15,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:52:15,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 2736 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 08:52:15,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:52:15,454 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-12-14 08:52:15,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:52:15,473 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-12-14 08:52:15,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662472834] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 08:52:15,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 08:52:15,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2022-12-14 08:52:15,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271432323] [2022-12-14 08:52:15,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:52:15,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:52:15,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:52:15,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:52:15,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 08:52:15,475 INFO L87 Difference]: Start difference. First operand 56 states and 83 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 08:52:15,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:52:15,918 INFO L93 Difference]: Finished difference Result 91 states and 138 transitions. [2022-12-14 08:52:15,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:52:15,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 73 [2022-12-14 08:52:15,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:52:15,919 INFO L225 Difference]: With dead ends: 91 [2022-12-14 08:52:15,919 INFO L226 Difference]: Without dead ends: 57 [2022-12-14 08:52:15,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 08:52:15,921 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 08:52:15,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 08:52:15,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-12-14 08:52:15,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-12-14 08:52:15,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 45 states have internal predecessors, (64), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 08:52:15,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 84 transitions. [2022-12-14 08:52:15,930 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 84 transitions. Word has length 73 [2022-12-14 08:52:15,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:52:15,930 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 84 transitions. [2022-12-14 08:52:15,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 08:52:15,931 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 84 transitions. [2022-12-14 08:52:15,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-14 08:52:15,932 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:52:15,932 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:52:15,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-14 08:52:16,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:52:16,134 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:52:16,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:52:16,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1179685386, now seen corresponding path program 1 times [2022-12-14 08:52:16,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:52:16,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594613814] [2022-12-14 08:52:16,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:52:16,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:52:16,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:52:16,732 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-12-14 08:52:16,732 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:52:16,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594613814] [2022-12-14 08:52:16,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594613814] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:52:16,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593065720] [2022-12-14 08:52:16,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:52:16,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:52:16,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:52:16,734 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:52:16,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 08:52:17,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:52:17,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 2743 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 08:52:17,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:52:17,429 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-12-14 08:52:17,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:52:17,448 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-12-14 08:52:17,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593065720] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 08:52:17,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 08:52:17,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2022-12-14 08:52:17,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005890229] [2022-12-14 08:52:17,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:52:17,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:52:17,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:52:17,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:52:17,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 08:52:17,450 INFO L87 Difference]: Start difference. First operand 57 states and 84 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 08:52:17,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:52:17,849 INFO L93 Difference]: Finished difference Result 93 states and 140 transitions. [2022-12-14 08:52:17,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:52:17,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 74 [2022-12-14 08:52:17,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:52:17,850 INFO L225 Difference]: With dead ends: 93 [2022-12-14 08:52:17,850 INFO L226 Difference]: Without dead ends: 58 [2022-12-14 08:52:17,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 08:52:17,851 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 08:52:17,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 08:52:17,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-12-14 08:52:17,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-12-14 08:52:17,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 46 states have (on average 1.4130434782608696) internal successors, (65), 46 states have internal predecessors, (65), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 08:52:17,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 85 transitions. [2022-12-14 08:52:17,856 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 85 transitions. Word has length 74 [2022-12-14 08:52:17,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:52:17,857 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 85 transitions. [2022-12-14 08:52:17,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 08:52:17,857 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 85 transitions. [2022-12-14 08:52:17,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-14 08:52:17,858 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:52:17,858 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:52:17,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 08:52:18,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:52:18,060 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:52:18,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:52:18,061 INFO L85 PathProgramCache]: Analyzing trace with hash -464319361, now seen corresponding path program 1 times [2022-12-14 08:52:18,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:52:18,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085887591] [2022-12-14 08:52:18,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:52:18,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:52:18,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:52:18,637 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-12-14 08:52:18,637 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:52:18,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085887591] [2022-12-14 08:52:18,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085887591] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:52:18,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811858903] [2022-12-14 08:52:18,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:52:18,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:52:18,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:52:18,639 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:52:18,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 08:52:19,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:52:19,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 2750 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 08:52:19,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:52:19,443 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-14 08:52:19,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:52:19,465 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-12-14 08:52:19,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811858903] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 08:52:19,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 08:52:19,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2022-12-14 08:52:19,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235506655] [2022-12-14 08:52:19,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:52:19,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:52:19,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:52:19,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:52:19,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 08:52:19,467 INFO L87 Difference]: Start difference. First operand 58 states and 85 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 08:52:19,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:52:19,710 INFO L93 Difference]: Finished difference Result 95 states and 142 transitions. [2022-12-14 08:52:19,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:52:19,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 75 [2022-12-14 08:52:19,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:52:19,711 INFO L225 Difference]: With dead ends: 95 [2022-12-14 08:52:19,711 INFO L226 Difference]: Without dead ends: 59 [2022-12-14 08:52:19,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 08:52:19,712 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 08:52:19,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 08:52:19,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-12-14 08:52:19,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-12-14 08:52:19,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 47 states have (on average 1.4042553191489362) internal successors, (66), 47 states have internal predecessors, (66), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 08:52:19,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 86 transitions. [2022-12-14 08:52:19,717 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 86 transitions. Word has length 75 [2022-12-14 08:52:19,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:52:19,717 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 86 transitions. [2022-12-14 08:52:19,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 08:52:19,717 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 86 transitions. [2022-12-14 08:52:19,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-12-14 08:52:19,718 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:52:19,718 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:52:19,728 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 08:52:19,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 08:52:19,919 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:52:19,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:52:19,920 INFO L85 PathProgramCache]: Analyzing trace with hash 995061736, now seen corresponding path program 1 times [2022-12-14 08:52:19,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:52:19,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836004258] [2022-12-14 08:52:19,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:52:19,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:52:20,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:52:20,480 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-12-14 08:52:20,480 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:52:20,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836004258] [2022-12-14 08:52:20,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836004258] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:52:20,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128735175] [2022-12-14 08:52:20,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:52:20,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:52:20,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:52:20,481 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:52:20,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 08:52:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:52:21,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 2757 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 08:52:21,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:52:21,119 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-12-14 08:52:21,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:52:21,143 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-12-14 08:52:21,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128735175] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 08:52:21,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 08:52:21,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-12-14 08:52:21,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79349281] [2022-12-14 08:52:21,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:52:21,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:52:21,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:52:21,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:52:21,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:52:21,145 INFO L87 Difference]: Start difference. First operand 59 states and 86 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 08:52:21,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:52:21,724 INFO L93 Difference]: Finished difference Result 97 states and 144 transitions. [2022-12-14 08:52:21,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:52:21,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 76 [2022-12-14 08:52:21,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:52:21,725 INFO L225 Difference]: With dead ends: 97 [2022-12-14 08:52:21,725 INFO L226 Difference]: Without dead ends: 60 [2022-12-14 08:52:21,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:52:21,726 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 08:52:21,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 08:52:21,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-12-14 08:52:21,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-12-14 08:52:21,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 48 states have (on average 1.3958333333333333) internal successors, (67), 48 states have internal predecessors, (67), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 08:52:21,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 87 transitions. [2022-12-14 08:52:21,731 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 87 transitions. Word has length 76 [2022-12-14 08:52:21,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:52:21,731 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 87 transitions. [2022-12-14 08:52:21,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 08:52:21,731 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 87 transitions. [2022-12-14 08:52:21,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-14 08:52:21,732 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:52:21,732 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:52:21,745 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 08:52:21,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:52:21,933 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:52:21,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:52:21,934 INFO L85 PathProgramCache]: Analyzing trace with hash -950987365, now seen corresponding path program 1 times [2022-12-14 08:52:21,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:52:21,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109824339] [2022-12-14 08:52:21,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:52:21,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:52:22,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:52:22,467 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-12-14 08:52:22,467 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:52:22,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109824339] [2022-12-14 08:52:22,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109824339] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:52:22,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202243754] [2022-12-14 08:52:22,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:52:22,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:52:22,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:52:22,469 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:52:22,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 08:52:23,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:52:23,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 2764 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 08:52:23,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:52:23,244 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-12-14 08:52:23,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:52:23,265 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-12-14 08:52:23,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202243754] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 08:52:23,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 08:52:23,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-12-14 08:52:23,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936733965] [2022-12-14 08:52:23,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:52:23,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:52:23,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:52:23,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:52:23,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:52:23,267 INFO L87 Difference]: Start difference. First operand 60 states and 87 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 08:52:23,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:52:23,579 INFO L93 Difference]: Finished difference Result 99 states and 146 transitions. [2022-12-14 08:52:23,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:52:23,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 77 [2022-12-14 08:52:23,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:52:23,580 INFO L225 Difference]: With dead ends: 99 [2022-12-14 08:52:23,580 INFO L226 Difference]: Without dead ends: 61 [2022-12-14 08:52:23,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:52:23,581 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 08:52:23,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 08:52:23,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-12-14 08:52:23,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-12-14 08:52:23,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 49 states have (on average 1.3877551020408163) internal successors, (68), 49 states have internal predecessors, (68), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 08:52:23,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 88 transitions. [2022-12-14 08:52:23,589 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 88 transitions. Word has length 77 [2022-12-14 08:52:23,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:52:23,589 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 88 transitions. [2022-12-14 08:52:23,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 08:52:23,589 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 88 transitions. [2022-12-14 08:52:23,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-14 08:52:23,590 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:52:23,590 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:52:23,600 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-14 08:52:23,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:52:23,791 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:52:23,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:52:23,792 INFO L85 PathProgramCache]: Analyzing trace with hash 697126287, now seen corresponding path program 1 times [2022-12-14 08:52:23,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:52:23,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832118183] [2022-12-14 08:52:23,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:52:23,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:52:23,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:52:24,359 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-12-14 08:52:24,359 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:52:24,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832118183] [2022-12-14 08:52:24,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832118183] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:52:24,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293549414] [2022-12-14 08:52:24,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:52:24,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:52:24,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:52:24,360 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:52:24,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-14 08:52:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:52:25,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 2771 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 08:52:25,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:52:25,134 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-14 08:52:25,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:52:25,153 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-12-14 08:52:25,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293549414] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 08:52:25,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 08:52:25,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-12-14 08:52:25,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422835770] [2022-12-14 08:52:25,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:52:25,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:52:25,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:52:25,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:52:25,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:52:25,155 INFO L87 Difference]: Start difference. First operand 61 states and 88 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 08:52:26,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:52:26,224 INFO L93 Difference]: Finished difference Result 101 states and 148 transitions. [2022-12-14 08:52:26,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:52:26,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 78 [2022-12-14 08:52:26,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:52:26,226 INFO L225 Difference]: With dead ends: 101 [2022-12-14 08:52:26,226 INFO L226 Difference]: Without dead ends: 62 [2022-12-14 08:52:26,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:52:26,227 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:52:26,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-14 08:52:26,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-12-14 08:52:26,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-12-14 08:52:26,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 50 states have (on average 1.38) internal successors, (69), 50 states have internal predecessors, (69), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 08:52:26,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 89 transitions. [2022-12-14 08:52:26,232 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 89 transitions. Word has length 78 [2022-12-14 08:52:26,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:52:26,232 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 89 transitions. [2022-12-14 08:52:26,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 08:52:26,232 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 89 transitions. [2022-12-14 08:52:26,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-14 08:52:26,233 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:52:26,233 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:52:26,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-12-14 08:52:26,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-14 08:52:26,434 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:52:26,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:52:26,435 INFO L85 PathProgramCache]: Analyzing trace with hash 811801261, now seen corresponding path program 1 times [2022-12-14 08:52:26,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:52:26,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395880561] [2022-12-14 08:52:26,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:52:26,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:52:26,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:52:27,143 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-12-14 08:52:27,143 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:52:27,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395880561] [2022-12-14 08:52:27,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395880561] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:52:27,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758280173] [2022-12-14 08:52:27,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:52:27,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:52:27,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:52:27,144 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:52:27,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-14 08:52:27,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:52:27,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 2778 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 08:52:27,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:52:27,890 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-12-14 08:52:27,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:52:27,909 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-12-14 08:52:27,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758280173] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 08:52:27,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 08:52:27,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-12-14 08:52:27,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943203335] [2022-12-14 08:52:27,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:52:27,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:52:27,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:52:27,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:52:27,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:52:27,910 INFO L87 Difference]: Start difference. First operand 62 states and 89 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 08:52:29,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 08:52:29,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:52:29,742 INFO L93 Difference]: Finished difference Result 103 states and 150 transitions. [2022-12-14 08:52:29,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:52:29,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 79 [2022-12-14 08:52:29,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:52:29,743 INFO L225 Difference]: With dead ends: 103 [2022-12-14 08:52:29,743 INFO L226 Difference]: Without dead ends: 63 [2022-12-14 08:52:29,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:52:29,744 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-14 08:52:29,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-14 08:52:29,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-12-14 08:52:29,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-12-14 08:52:29,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 51 states have (on average 1.3725490196078431) internal successors, (70), 51 states have internal predecessors, (70), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 08:52:29,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 90 transitions. [2022-12-14 08:52:29,752 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 90 transitions. Word has length 79 [2022-12-14 08:52:29,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:52:29,753 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 90 transitions. [2022-12-14 08:52:29,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 08:52:29,753 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 90 transitions. [2022-12-14 08:52:29,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-14 08:52:29,754 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:52:29,754 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:52:29,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-14 08:52:29,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-14 08:52:29,955 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:52:29,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:52:29,956 INFO L85 PathProgramCache]: Analyzing trace with hash 33028752, now seen corresponding path program 1 times [2022-12-14 08:52:29,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:52:29,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573999300] [2022-12-14 08:52:29,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:52:29,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:52:30,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:52:30,579 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-12-14 08:52:30,579 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:52:30,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573999300] [2022-12-14 08:52:30,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573999300] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:52:30,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295664409] [2022-12-14 08:52:30,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:52:30,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:52:30,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:52:30,580 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:52:30,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-14 08:52:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:52:31,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 2785 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 08:52:31,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:52:31,333 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-12-14 08:52:31,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:52:31,353 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-12-14 08:52:31,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295664409] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 08:52:31,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 08:52:31,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-12-14 08:52:31,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046457700] [2022-12-14 08:52:31,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:52:31,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:52:31,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:52:31,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:52:31,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:52:31,355 INFO L87 Difference]: Start difference. First operand 63 states and 90 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 08:52:32,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:52:32,003 INFO L93 Difference]: Finished difference Result 105 states and 152 transitions. [2022-12-14 08:52:32,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:52:32,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 80 [2022-12-14 08:52:32,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:52:32,004 INFO L225 Difference]: With dead ends: 105 [2022-12-14 08:52:32,004 INFO L226 Difference]: Without dead ends: 64 [2022-12-14 08:52:32,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:52:32,004 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 08:52:32,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 08:52:32,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-12-14 08:52:32,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-12-14 08:52:32,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 52 states have (on average 1.3653846153846154) internal successors, (71), 52 states have internal predecessors, (71), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 08:52:32,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 91 transitions. [2022-12-14 08:52:32,009 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 91 transitions. Word has length 80 [2022-12-14 08:52:32,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:52:32,009 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 91 transitions. [2022-12-14 08:52:32,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 08:52:32,010 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 91 transitions. [2022-12-14 08:52:32,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-14 08:52:32,010 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:52:32,010 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:52:32,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-12-14 08:52:32,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:52:32,211 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:52:32,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:52:32,212 INFO L85 PathProgramCache]: Analyzing trace with hash 2033322741, now seen corresponding path program 1 times [2022-12-14 08:52:32,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:52:32,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161307510] [2022-12-14 08:52:32,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:52:32,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:52:32,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:52:32,759 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-12-14 08:52:32,759 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:52:32,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161307510] [2022-12-14 08:52:32,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161307510] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:52:32,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460339855] [2022-12-14 08:52:32,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:52:32,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:52:32,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:52:32,761 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:52:32,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-14 08:52:33,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:52:33,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 2792 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 08:52:33,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:52:33,546 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-12-14 08:52:33,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:52:33,566 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-12-14 08:52:33,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460339855] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 08:52:33,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 08:52:33,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-12-14 08:52:33,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942433617] [2022-12-14 08:52:33,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:52:33,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:52:33,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:52:33,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:52:33,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:52:33,568 INFO L87 Difference]: Start difference. First operand 64 states and 91 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 08:52:33,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:52:33,955 INFO L93 Difference]: Finished difference Result 107 states and 154 transitions. [2022-12-14 08:52:33,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:52:33,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 81 [2022-12-14 08:52:33,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:52:33,957 INFO L225 Difference]: With dead ends: 107 [2022-12-14 08:52:33,957 INFO L226 Difference]: Without dead ends: 65 [2022-12-14 08:52:33,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:52:33,958 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 08:52:33,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 08:52:33,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-12-14 08:52:33,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-12-14 08:52:33,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 53 states have (on average 1.3584905660377358) internal successors, (72), 53 states have internal predecessors, (72), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 08:52:33,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 92 transitions. [2022-12-14 08:52:33,967 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 92 transitions. Word has length 81 [2022-12-14 08:52:33,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:52:33,967 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 92 transitions. [2022-12-14 08:52:33,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 08:52:33,967 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 92 transitions. [2022-12-14 08:52:33,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-12-14 08:52:33,968 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:52:33,968 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:52:33,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-14 08:52:34,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-14 08:52:34,169 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:52:34,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:52:34,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1531764947, now seen corresponding path program 1 times [2022-12-14 08:52:34,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:52:34,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250800018] [2022-12-14 08:52:34,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:52:34,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:52:34,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:52:34,735 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-12-14 08:52:34,735 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:52:34,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250800018] [2022-12-14 08:52:34,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250800018] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:52:34,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842543213] [2022-12-14 08:52:34,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:52:34,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:52:34,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:52:34,736 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:52:34,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-14 08:52:35,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:52:35,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 2799 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 08:52:35,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:52:35,656 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-12-14 08:52:35,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:52:35,676 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-12-14 08:52:35,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842543213] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 08:52:35,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 08:52:35,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-12-14 08:52:35,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147220688] [2022-12-14 08:52:35,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:52:35,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:52:35,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:52:35,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:52:35,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:52:35,678 INFO L87 Difference]: Start difference. First operand 65 states and 92 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 08:52:36,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:52:36,037 INFO L93 Difference]: Finished difference Result 109 states and 156 transitions. [2022-12-14 08:52:36,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:52:36,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 82 [2022-12-14 08:52:36,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:52:36,039 INFO L225 Difference]: With dead ends: 109 [2022-12-14 08:52:36,039 INFO L226 Difference]: Without dead ends: 66 [2022-12-14 08:52:36,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:52:36,039 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 08:52:36,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 08:52:36,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-12-14 08:52:36,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2022-12-14 08:52:36,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 54 states have (on average 1.3518518518518519) internal successors, (73), 54 states have internal predecessors, (73), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 08:52:36,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 93 transitions. [2022-12-14 08:52:36,045 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 93 transitions. Word has length 82 [2022-12-14 08:52:36,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:52:36,045 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 93 transitions. [2022-12-14 08:52:36,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 08:52:36,046 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 93 transitions. [2022-12-14 08:52:36,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-14 08:52:36,046 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:52:36,046 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:52:36,057 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-14 08:52:36,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-14 08:52:36,247 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:52:36,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:52:36,248 INFO L85 PathProgramCache]: Analyzing trace with hash 780025683, now seen corresponding path program 1 times [2022-12-14 08:52:36,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:52:36,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059820319] [2022-12-14 08:52:36,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:52:36,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:52:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:52:36,871 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2022-12-14 08:52:36,872 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:52:36,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059820319] [2022-12-14 08:52:36,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059820319] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:52:36,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258493740] [2022-12-14 08:52:36,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:52:36,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:52:36,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:52:36,873 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:52:36,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-14 08:52:37,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:52:37,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 2806 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 08:52:37,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:52:37,780 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-12-14 08:52:37,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:52:37,800 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-12-14 08:52:37,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258493740] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 08:52:37,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 08:52:37,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2022-12-14 08:52:37,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714593532] [2022-12-14 08:52:37,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:52:37,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:52:37,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:52:37,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:52:37,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 08:52:37,801 INFO L87 Difference]: Start difference. First operand 66 states and 93 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 08:52:38,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:52:38,562 INFO L93 Difference]: Finished difference Result 111 states and 158 transitions. [2022-12-14 08:52:38,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:52:38,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 83 [2022-12-14 08:52:38,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:52:38,564 INFO L225 Difference]: With dead ends: 111 [2022-12-14 08:52:38,564 INFO L226 Difference]: Without dead ends: 67 [2022-12-14 08:52:38,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 08:52:38,565 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-14 08:52:38,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-14 08:52:38,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-12-14 08:52:38,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-12-14 08:52:38,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 55 states have (on average 1.3454545454545455) internal successors, (74), 55 states have internal predecessors, (74), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 08:52:38,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 94 transitions. [2022-12-14 08:52:38,570 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 94 transitions. Word has length 83 [2022-12-14 08:52:38,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:52:38,570 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 94 transitions. [2022-12-14 08:52:38,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 08:52:38,571 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 94 transitions. [2022-12-14 08:52:38,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-14 08:52:38,571 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:52:38,571 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:52:38,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-12-14 08:52:38,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-14 08:52:38,773 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:52:38,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:52:38,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1336913741, now seen corresponding path program 1 times [2022-12-14 08:52:38,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:52:38,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715852565] [2022-12-14 08:52:38,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:52:38,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:52:38,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:52:39,318 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-12-14 08:52:39,318 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:52:39,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715852565] [2022-12-14 08:52:39,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715852565] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:52:39,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045676795] [2022-12-14 08:52:39,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:52:39,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:52:39,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:52:39,319 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:52:39,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-14 08:52:40,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:52:40,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 2813 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 08:52:40,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:52:40,274 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-12-14 08:52:40,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:52:40,294 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-12-14 08:52:40,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045676795] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 08:52:40,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 08:52:40,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-12-14 08:52:40,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106460271] [2022-12-14 08:52:40,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:52:40,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:52:40,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:52:40,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:52:40,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:52:40,296 INFO L87 Difference]: Start difference. First operand 67 states and 94 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 08:52:41,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 08:52:41,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:52:41,894 INFO L93 Difference]: Finished difference Result 113 states and 160 transitions. [2022-12-14 08:52:41,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:52:41,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 84 [2022-12-14 08:52:41,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:52:41,895 INFO L225 Difference]: With dead ends: 113 [2022-12-14 08:52:41,895 INFO L226 Difference]: Without dead ends: 68 [2022-12-14 08:52:41,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:52:41,896 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-14 08:52:41,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-12-14 08:52:41,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-12-14 08:52:41,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2022-12-14 08:52:41,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 56 states have (on average 1.3392857142857142) internal successors, (75), 56 states have internal predecessors, (75), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 08:52:41,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 95 transitions. [2022-12-14 08:52:41,902 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 95 transitions. Word has length 84 [2022-12-14 08:52:41,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:52:41,902 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 95 transitions. [2022-12-14 08:52:41,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 08:52:41,903 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 95 transitions. [2022-12-14 08:52:41,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-12-14 08:52:41,903 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:52:41,903 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:52:41,914 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-12-14 08:52:42,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:52:42,104 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:52:42,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:52:42,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1169777751, now seen corresponding path program 1 times [2022-12-14 08:52:42,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:52:42,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258702716] [2022-12-14 08:52:42,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:52:42,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:52:42,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:52:42,655 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-12-14 08:52:42,655 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:52:42,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258702716] [2022-12-14 08:52:42,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258702716] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:52:42,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204506753] [2022-12-14 08:52:42,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:52:42,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:52:42,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:52:42,657 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:52:42,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-14 08:52:43,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:52:43,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 2820 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 08:52:43,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:52:43,697 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-12-14 08:52:43,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:52:43,720 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-12-14 08:52:43,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204506753] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 08:52:43,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 08:52:43,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-12-14 08:52:43,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939266016] [2022-12-14 08:52:43,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:52:43,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:52:43,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:52:43,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:52:43,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:52:43,722 INFO L87 Difference]: Start difference. First operand 68 states and 95 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 08:52:44,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:52:44,184 INFO L93 Difference]: Finished difference Result 115 states and 162 transitions. [2022-12-14 08:52:44,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:52:44,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 85 [2022-12-14 08:52:44,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:52:44,185 INFO L225 Difference]: With dead ends: 115 [2022-12-14 08:52:44,185 INFO L226 Difference]: Without dead ends: 69 [2022-12-14 08:52:44,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:52:44,186 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 08:52:44,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 08:52:44,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-12-14 08:52:44,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-12-14 08:52:44,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 57 states have (on average 1.3333333333333333) internal successors, (76), 57 states have internal predecessors, (76), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 08:52:44,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 96 transitions. [2022-12-14 08:52:44,194 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 96 transitions. Word has length 85 [2022-12-14 08:52:44,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:52:44,194 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 96 transitions. [2022-12-14 08:52:44,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 08:52:44,194 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 96 transitions. [2022-12-14 08:52:44,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-12-14 08:52:44,194 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:52:44,195 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:52:44,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-12-14 08:52:44,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:52:44,396 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:52:44,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:52:44,397 INFO L85 PathProgramCache]: Analyzing trace with hash 164350877, now seen corresponding path program 1 times [2022-12-14 08:52:44,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:52:44,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539359180] [2022-12-14 08:52:44,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:52:44,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:52:44,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:52:44,958 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2022-12-14 08:52:44,958 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:52:44,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539359180] [2022-12-14 08:52:44,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539359180] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:52:44,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346609253] [2022-12-14 08:52:44,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:52:44,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:52:44,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:52:44,959 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:52:44,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613d2bd-5e79-498d-a38d-b93c1f858697/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-14 08:52:45,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:52:45,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 2827 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 08:52:45,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:52:45,920 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-12-14 08:52:45,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:52:45,947 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2022-12-14 08:52:45,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346609253] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:52:45,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [446621276] [2022-12-14 08:52:45,951 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2022-12-14 08:52:45,951 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:52:45,951 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:52:45,952 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:52:45,952 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:52:46,031 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 08:52:46,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 17 [2022-12-14 08:52:46,109 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 31 [2022-12-14 08:52:46,427 INFO L321 Elim1Store]: treesize reduction 41, result has 26.8 percent of original size [2022-12-14 08:52:46,427 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 1 case distinctions, treesize of input 652 treesize of output 659 [2022-12-14 08:52:47,023 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 41 treesize of output 37 [2022-12-14 08:52:47,094 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 08:52:47,112 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 08:52:47,169 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 31 [2022-12-14 08:52:47,540 INFO L321 Elim1Store]: treesize reduction 41, result has 26.8 percent of original size [2022-12-14 08:52:47,540 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 1 case distinctions, treesize of input 492 treesize of output 499 [2022-12-14 08:52:48,066 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 41 treesize of output 37 [2022-12-14 08:52:48,249 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 08:52:48,272 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 08:52:48,490 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 41 treesize of output 37 [2022-12-14 08:52:48,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:52:48,911 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 97 treesize of output 96 [2022-12-14 08:52:49,157 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 41 treesize of output 37 [2022-12-14 08:52:54,535 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 08:52:54,703 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 08:52:55,284 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:52:55,302 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 08:52:55,302 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 1 case distinctions, treesize of input 27 treesize of output 27 [2022-12-14 08:52:56,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:52:56,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:52:56,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:52:56,612 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:52:56,613 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:52:56,631 INFO L321 Elim1Store]: treesize reduction 31, result has 29.5 percent of original size [2022-12-14 08:52:56,631 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 3 case distinctions, treesize of input 69 treesize of output 74 [2022-12-14 08:52:57,453 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:52:57,471 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 08:52:57,471 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 1 case distinctions, treesize of input 27 treesize of output 27 [2022-12-14 08:52:57,987 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 15 treesize of output 11 [2022-12-14 08:52:58,066 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 08:52:58,184 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 08:52:58,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:52:58,628 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:52:58,629 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:52:58,673 INFO L321 Elim1Store]: treesize reduction 38, result has 49.3 percent of original size [2022-12-14 08:52:58,674 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 67 [2022-12-14 08:53:00,596 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:53:00,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:53:00,813 INFO L321 Elim1Store]: treesize reduction 82, result has 58.6 percent of original size [2022-12-14 08:53:00,813 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 6 case distinctions, treesize of input 249 treesize of output 334 [2022-12-14 08:53:03,036 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:53:03,055 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 08:53:03,056 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 1 case distinctions, treesize of input 27 treesize of output 27 [2022-12-14 08:53:03,728 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 08:53:03,788 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 15 treesize of output 11 [2022-12-14 08:53:03,835 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 08:53:04,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:53:04,479 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:53:04,527 INFO L321 Elim1Store]: treesize reduction 84, result has 18.4 percent of original size [2022-12-14 08:53:04,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 38 treesize of output 43 [2022-12-14 08:53:06,657 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:53:06,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:53:06,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:53:06,663 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:53:06,933 INFO L321 Elim1Store]: treesize reduction 256, result has 29.3 percent of original size [2022-12-14 08:53:06,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 466 treesize of output 517 [2022-12-14 08:53:09,960 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:53:09,978 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 08:53:09,978 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 1 case distinctions, treesize of input 27 treesize of output 27 [2022-12-14 08:53:10,605 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 08:53:10,696 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 15 treesize of output 11 [2022-12-14 08:53:10,746 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 08:53:11,546 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:53:11,780 INFO L321 Elim1Store]: treesize reduction 152, result has 43.5 percent of original size [2022-12-14 08:53:11,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 49 treesize of output 133 [2022-12-14 08:53:14,592 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:53:14,904 INFO L321 Elim1Store]: treesize reduction 112, result has 67.0 percent of original size [2022-12-14 08:53:14,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 272 treesize of output 460 [2022-12-14 08:53:53,957 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 7492 conjuctions. This might take some time... [2022-12-14 08:58:05,952 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 7492 conjuctions. [2022-12-14 08:58:11,938 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 7492 conjuctions. This might take some time... [2022-12-14 09:02:25,846 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 7492 conjuctions. [2022-12-14 09:02:38,154 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:02:38,175 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 09:02:38,175 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 1 case distinctions, treesize of input 27 treesize of output 27 [2022-12-14 09:02:38,952 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 09:02:39,038 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 09:02:39,198 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 15 treesize of output 11 [2022-12-14 09:02:40,136 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:02:40,228 INFO L321 Elim1Store]: treesize reduction 108, result has 34.9 percent of original size [2022-12-14 09:02:40,228 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 6 case distinctions, treesize of input 38 treesize of output 71 [2022-12-14 09:02:44,252 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:02:44,407 INFO L321 Elim1Store]: treesize reduction 82, result has 62.4 percent of original size [2022-12-14 09:02:44,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 249 treesize of output 354 [2022-12-14 09:02:49,882 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:02:49,905 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 09:02:49,905 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 1 case distinctions, treesize of input 27 treesize of output 27 [2022-12-14 09:02:51,003 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 15 treesize of output 11 [2022-12-14 09:02:51,075 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 09:02:51,128 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 09:02:52,529 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:02:52,553 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 09:02:52,553 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 1 case distinctions, treesize of input 27 treesize of output 27 [2022-12-14 09:02:55,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:02:55,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:02:55,934 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:02:55,934 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:02:55,957 INFO L321 Elim1Store]: treesize reduction 31, result has 29.5 percent of original size [2022-12-14 09:02:55,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 74 [2022-12-14 09:02:57,465 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:02:57,489 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 09:02:57,489 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 1 case distinctions, treesize of input 27 treesize of output 27 [2022-12-14 09:02:59,383 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 09:02:59,990 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 09:03:00,374 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 15 treesize of output 11 [2022-12-14 09:03:02,459 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:03:02,490 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 09:03:02,490 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 1 case distinctions, treesize of input 27 treesize of output 27 [2022-12-14 09:03:07,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:03:07,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:03:07,310 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:03:07,311 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:03:07,339 INFO L321 Elim1Store]: treesize reduction 31, result has 29.5 percent of original size [2022-12-14 09:03:07,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 74 [2022-12-14 09:03:09,581 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:03:09,611 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 09:03:09,611 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 1 case distinctions, treesize of input 27 treesize of output 27 [2022-12-14 09:03:10,849 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 09:03:11,058 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 15 treesize of output 11 [2022-12-14 09:03:11,234 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 09:03:12,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:03:12,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:03:12,837 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:03:12,838 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:03:12,901 INFO L321 Elim1Store]: treesize reduction 38, result has 49.3 percent of original size [2022-12-14 09:03:12,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 67 [2022-12-14 09:03:19,122 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:03:19,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:03:19,423 INFO L321 Elim1Store]: treesize reduction 82, result has 58.6 percent of original size [2022-12-14 09:03:19,424 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 6 case distinctions, treesize of input 249 treesize of output 334 [2022-12-14 09:03:24,510 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:03:24,541 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 09:03:24,541 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 1 case distinctions, treesize of input 27 treesize of output 27 [2022-12-14 09:03:26,115 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 15 treesize of output 11 [2022-12-14 09:03:26,269 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 09:03:26,401 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 09:03:28,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:03:28,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:03:28,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:03:28,201 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:03:28,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:03:28,252 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 09:03:28,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 55 [2022-12-14 09:03:33,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:03:33,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:03:33,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:03:33,986 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:03:33,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:03:33,994 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:03:34,339 INFO L321 Elim1Store]: treesize reduction 218, result has 25.9 percent of original size [2022-12-14 09:03:34,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 485 treesize of output 520 [2022-12-14 09:03:38,226 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:03:38,266 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 09:03:38,267 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 1 case distinctions, treesize of input 27 treesize of output 27 [2022-12-14 09:03:39,738 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 09:03:39,960 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 09:03:40,296 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 15 treesize of output 11 [2022-12-14 09:03:41,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:03:41,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:03:41,794 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:03:41,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:03:41,833 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 09:03:41,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 55 [2022-12-14 09:03:48,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:03:48,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:03:48,729 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:03:48,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:03:48,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:03:48,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:03:48,745 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:03:48,907 INFO L321 Elim1Store]: treesize reduction 214, result has 14.4 percent of original size [2022-12-14 09:03:48,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 491 treesize of output 486 [2022-12-14 09:03:51,962 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:03:51,994 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 09:03:51,995 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 1 case distinctions, treesize of input 27 treesize of output 27 [2022-12-14 09:03:53,893 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 09:03:54,470 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 15 treesize of output 11 [2022-12-14 09:03:54,660 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 09:04:00,614 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:04:00,653 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 09:04:00,653 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 1 case distinctions, treesize of input 27 treesize of output 27 [2022-12-14 09:04:06,853 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:04:06,884 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 09:04:06,884 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 1 case distinctions, treesize of input 27 treesize of output 27 [2022-12-14 09:04:09,271 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 15 treesize of output 11 [2022-12-14 09:04:09,462 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 09:04:09,853 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 09:04:12,657 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:04:12,769 INFO L321 Elim1Store]: treesize reduction 138, result has 35.5 percent of original size [2022-12-14 09:04:12,770 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 6 case distinctions, treesize of input 50 treesize of output 95 [2022-12-14 09:04:20,743 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:04:20,910 INFO L321 Elim1Store]: treesize reduction 82, result has 62.4 percent of original size [2022-12-14 09:04:20,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 249 treesize of output 354 [2022-12-14 09:04:31,049 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:04:31,085 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 09:04:31,085 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 1 case distinctions, treesize of input 27 treesize of output 27 [2022-12-14 09:04:33,737 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 15 treesize of output 11 [2022-12-14 09:04:35,754 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:04:35,903 INFO L321 Elim1Store]: treesize reduction 52, result has 55.6 percent of original size [2022-12-14 09:04:35,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 81 [2022-12-14 09:04:39,372 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:04:39,403 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 09:04:39,404 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 1 case distinctions, treesize of input 27 treesize of output 27 [2022-12-14 09:04:42,459 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:04:42,496 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 09:04:42,497 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 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 09:04:50,052 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:04:50,052 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:04:50,119 INFO L321 Elim1Store]: treesize reduction 94, result has 36.5 percent of original size [2022-12-14 09:04:50,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 89 [2022-12-14 09:04:53,518 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:04:53,551 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 09:04:53,551 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 1 case distinctions, treesize of input 27 treesize of output 27 [2022-12-14 09:04:57,124 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:04:57,161 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 09:04:57,161 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 1 case distinctions, treesize of input 27 treesize of output 27 [2022-12-14 09:05:04,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:05:04,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:05:04,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:05:04,908 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:05:04,909 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:05:04,947 INFO L321 Elim1Store]: treesize reduction 31, result has 29.5 percent of original size [2022-12-14 09:05:04,947 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 3 case distinctions, treesize of input 137 treesize of output 142 [2022-12-14 09:05:08,826 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:05:08,857 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 09:05:08,857 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 1 case distinctions, treesize of input 27 treesize of output 27 [2022-12-14 09:05:11,147 INFO L321 Elim1Store]: treesize reduction 1529, result has 3.5 percent of original size [2022-12-14 09:05:11,148 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 11 case distinctions, treesize of input 39 treesize of output 61 [2022-12-14 09:05:54,305 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 09:05:54,483 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 09:05:58,638 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:05:58,673 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 09:05:58,674 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 1 case distinctions, treesize of input 27 treesize of output 27 [2022-12-14 09:06:01,674 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:06:01,692 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 09:06:01,693 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 1 case distinctions, treesize of input 27 treesize of output 27 [2022-12-14 09:06:02,187 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 09:06:02,236 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 15 treesize of output 11