./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/indp4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96dec91d-c325-4936-abc6-bd546232acfc/bin/ukojak-LBtLqBUTdQ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96dec91d-c325-4936-abc6-bd546232acfc/bin/ukojak-LBtLqBUTdQ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96dec91d-c325-4936-abc6-bd546232acfc/bin/ukojak-LBtLqBUTdQ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96dec91d-c325-4936-abc6-bd546232acfc/bin/ukojak-LBtLqBUTdQ/config/KojakReach.xml -i ../../sv-benchmarks/c/array-fpi/indp4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96dec91d-c325-4936-abc6-bd546232acfc/bin/ukojak-LBtLqBUTdQ/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96dec91d-c325-4936-abc6-bd546232acfc/bin/ukojak-LBtLqBUTdQ --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 Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5dacb0c2523573165d60080200ebb5b22db90f6a3f4c08906b6192cd2123eb78 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 23:18:33,306 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 23:18:33,309 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 23:18:33,350 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 23:18:33,351 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 23:18:33,352 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 23:18:33,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 23:18:33,361 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 23:18:33,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 23:18:33,365 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 23:18:33,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 23:18:33,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 23:18:33,368 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 23:18:33,369 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 23:18:33,371 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 23:18:33,376 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 23:18:33,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 23:18:33,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 23:18:33,390 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 23:18:33,398 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 23:18:33,400 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 23:18:33,405 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 23:18:33,408 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 23:18:33,412 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 23:18:33,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 23:18:33,418 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 23:18:33,418 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 23:18:33,420 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 23:18:33,421 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 23:18:33,423 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 23:18:33,423 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 23:18:33,424 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 23:18:33,426 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 23:18:33,427 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 23:18:33,429 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 23:18:33,429 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 23:18:33,430 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 23:18:33,431 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 23:18:33,431 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 23:18:33,432 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 23:18:33,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 23:18:33,433 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96dec91d-c325-4936-abc6-bd546232acfc/bin/ukojak-LBtLqBUTdQ/config/svcomp-Reach-32bit-Kojak_Default.epf [2021-11-22 23:18:33,485 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 23:18:33,486 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 23:18:33,488 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-22 23:18:33,488 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2021-11-22 23:18:33,489 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 23:18:33,489 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 23:18:33,490 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 23:18:33,490 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 23:18:33,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 23:18:33,497 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 23:18:33,498 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 23:18:33,498 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 23:18:33,498 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 23:18:33,499 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 23:18:33,499 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 23:18:33,499 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 23:18:33,499 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 23:18:33,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 23:18:33,500 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-11-22 23:18:33,500 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-11-22 23:18:33,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 23:18:33,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-22 23:18:33,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 23:18:33,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 23:18:33,502 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 23:18:33,502 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-11-22 23:18:33,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 23:18:33,503 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 23:18:33,503 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_96dec91d-c325-4936-abc6-bd546232acfc/bin/ukojak-LBtLqBUTdQ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96dec91d-c325-4936-abc6-bd546232acfc/bin/ukojak-LBtLqBUTdQ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5dacb0c2523573165d60080200ebb5b22db90f6a3f4c08906b6192cd2123eb78 [2021-11-22 23:18:33,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 23:18:33,780 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 23:18:33,783 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 23:18:33,784 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 23:18:33,785 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 23:18:33,787 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96dec91d-c325-4936-abc6-bd546232acfc/bin/ukojak-LBtLqBUTdQ/../../sv-benchmarks/c/array-fpi/indp4.c [2021-11-22 23:18:33,852 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96dec91d-c325-4936-abc6-bd546232acfc/bin/ukojak-LBtLqBUTdQ/data/c0f605e80/c70ab400e9654afd82875d7b5ba4a7dc/FLAG491d86cad [2021-11-22 23:18:34,382 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 23:18:34,383 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96dec91d-c325-4936-abc6-bd546232acfc/sv-benchmarks/c/array-fpi/indp4.c [2021-11-22 23:18:34,391 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96dec91d-c325-4936-abc6-bd546232acfc/bin/ukojak-LBtLqBUTdQ/data/c0f605e80/c70ab400e9654afd82875d7b5ba4a7dc/FLAG491d86cad [2021-11-22 23:18:34,740 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96dec91d-c325-4936-abc6-bd546232acfc/bin/ukojak-LBtLqBUTdQ/data/c0f605e80/c70ab400e9654afd82875d7b5ba4a7dc [2021-11-22 23:18:34,742 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 23:18:34,743 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 23:18:34,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 23:18:34,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 23:18:34,748 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 23:18:34,749 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:18:34" (1/1) ... [2021-11-22 23:18:34,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c343a13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:34, skipping insertion in model container [2021-11-22 23:18:34,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:18:34" (1/1) ... [2021-11-22 23:18:34,757 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 23:18:34,771 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 23:18:34,956 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96dec91d-c325-4936-abc6-bd546232acfc/sv-benchmarks/c/array-fpi/indp4.c[588,601] [2021-11-22 23:18:34,971 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 23:18:34,980 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 23:18:34,992 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96dec91d-c325-4936-abc6-bd546232acfc/sv-benchmarks/c/array-fpi/indp4.c[588,601] [2021-11-22 23:18:35,001 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 23:18:35,014 INFO L208 MainTranslator]: Completed translation [2021-11-22 23:18:35,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:35 WrapperNode [2021-11-22 23:18:35,015 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 23:18:35,017 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 23:18:35,017 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 23:18:35,017 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 23:18:35,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:35" (1/1) ... [2021-11-22 23:18:35,052 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:35" (1/1) ... [2021-11-22 23:18:35,081 INFO L137 Inliner]: procedures = 16, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2021-11-22 23:18:35,086 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 23:18:35,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 23:18:35,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 23:18:35,088 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 23:18:35,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:35" (1/1) ... [2021-11-22 23:18:35,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:35" (1/1) ... [2021-11-22 23:18:35,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:35" (1/1) ... [2021-11-22 23:18:35,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:35" (1/1) ... [2021-11-22 23:18:35,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:35" (1/1) ... [2021-11-22 23:18:35,112 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:35" (1/1) ... [2021-11-22 23:18:35,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:35" (1/1) ... [2021-11-22 23:18:35,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 23:18:35,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 23:18:35,116 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 23:18:35,117 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 23:18:35,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:18:35" (1/1) ... [2021-11-22 23:18:35,129 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-22 23:18:35,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96dec91d-c325-4936-abc6-bd546232acfc/bin/ukojak-LBtLqBUTdQ/z3 [2021-11-22 23:18:35,151 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96dec91d-c325-4936-abc6-bd546232acfc/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-11-22 23:18:35,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96dec91d-c325-4936-abc6-bd546232acfc/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-11-22 23:18:35,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 23:18:35,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 23:18:35,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 23:18:35,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 23:18:35,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 23:18:35,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 23:18:35,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 23:18:35,243 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 23:18:35,244 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 23:18:35,377 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 23:18:35,413 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 23:18:35,414 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-22 23:18:35,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:18:35 BoogieIcfgContainer [2021-11-22 23:18:35,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 23:18:35,418 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-11-22 23:18:35,418 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-11-22 23:18:35,429 INFO L275 PluginConnector]: CodeCheck initialized [2021-11-22 23:18:35,429 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:18:35" (1/1) ... [2021-11-22 23:18:35,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:18:35,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:18:35,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 12 states and 17 transitions. [2021-11-22 23:18:35,498 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 17 transitions. [2021-11-22 23:18:35,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-22 23:18:35,500 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:18:35,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:18:35,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:18:35,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:18:35,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:18:35,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 13 states and 18 transitions. [2021-11-22 23:18:35,721 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 18 transitions. [2021-11-22 23:18:35,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-22 23:18:35,721 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:18:35,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:18:35,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:18:35,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 23:18:35,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:18:35,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 23:18:36,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:18:36,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 14 states and 20 transitions. [2021-11-22 23:18:36,067 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 20 transitions. [2021-11-22 23:18:36,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-22 23:18:36,068 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:18:36,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:18:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:18:36,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 23:18:36,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:18:36,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 23:18:36,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:18:36,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 15 states and 22 transitions. [2021-11-22 23:18:36,273 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 22 transitions. [2021-11-22 23:18:36,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-22 23:18:36,274 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:18:36,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:18:36,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:18:36,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-22 23:18:36,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:18:36,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-22 23:18:36,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-22 23:18:36,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-22 23:18:36,617 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:18:37,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:18:37,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 22 states and 43 transitions. [2021-11-22 23:18:37,100 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 43 transitions. [2021-11-22 23:18:37,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-22 23:18:37,103 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:18:37,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:18:37,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:18:37,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-22 23:18:37,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:18:37,297 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 23:18:37,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:18:37,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 23 states and 43 transitions. [2021-11-22 23:18:37,904 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 43 transitions. [2021-11-22 23:18:37,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-22 23:18:37,905 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:18:37,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:18:37,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:18:37,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-22 23:18:37,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:18:38,114 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 23:18:38,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:18:38,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 28 states and 51 transitions. [2021-11-22 23:18:38,701 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 51 transitions. [2021-11-22 23:18:38,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-22 23:18:38,702 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:18:38,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:18:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:18:38,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-22 23:18:38,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:18:38,758 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-22 23:18:39,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:18:39,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 29 states and 51 transitions. [2021-11-22 23:18:39,005 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 51 transitions. [2021-11-22 23:18:39,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-22 23:18:39,005 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:18:39,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:18:39,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:18:39,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-22 23:18:39,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:18:39,114 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 23:18:39,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:18:39,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 33 states and 58 transitions. [2021-11-22 23:18:39,427 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 58 transitions. [2021-11-22 23:18:39,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-22 23:18:39,428 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:18:39,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:18:39,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:18:39,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 23:18:39,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:18:39,638 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 23:18:40,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:18:40,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 34 states and 59 transitions. [2021-11-22 23:18:40,467 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 59 transitions. [2021-11-22 23:18:40,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-22 23:18:40,468 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:18:40,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:18:40,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:18:40,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-22 23:18:40,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:18:40,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-22 23:18:40,628 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-22 23:18:40,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-11-22 23:18:40,846 INFO L354 Elim1Store]: treesize reduction 415, result has 9.8 percent of original size [2021-11-22 23:18:40,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 108 treesize of output 115 [2021-11-22 23:18:40,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:18:40,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:18:40,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:18:40,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 52 [2021-11-22 23:18:41,025 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-22 23:18:41,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 38 treesize of output 25 [2021-11-22 23:18:41,182 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-22 23:18:41,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 32 treesize of output 23 [2021-11-22 23:18:41,264 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-22 23:18:41,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 38 treesize of output 25 [2021-11-22 23:18:41,429 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:18:43,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:18:43,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 40 states and 75 transitions. [2021-11-22 23:18:43,204 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 75 transitions. [2021-11-22 23:18:43,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-22 23:18:43,205 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:18:43,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:18:43,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:18:43,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 23:18:43,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:18:43,561 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 23:18:44,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:18:44,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 44 states and 81 transitions. [2021-11-22 23:18:44,854 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 81 transitions. [2021-11-22 23:18:44,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-22 23:18:44,861 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:18:44,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:18:44,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:18:44,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-22 23:18:44,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:18:44,924 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-22 23:18:45,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:18:45,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 45 states and 80 transitions. [2021-11-22 23:18:45,622 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 80 transitions. [2021-11-22 23:18:45,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-22 23:18:45,623 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:18:45,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:18:45,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:18:45,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 23:18:45,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:18:45,804 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-22 23:18:46,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:18:46,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 48 states and 84 transitions. [2021-11-22 23:18:46,566 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 84 transitions. [2021-11-22 23:18:46,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-22 23:18:46,566 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:18:46,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:18:46,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:18:46,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-22 23:18:46,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:18:46,982 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-22 23:18:48,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:18:48,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 51 states and 88 transitions. [2021-11-22 23:18:48,359 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 88 transitions. [2021-11-22 23:18:48,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-22 23:18:48,360 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:18:48,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:18:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:18:48,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 23:18:48,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:18:48,441 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-22 23:18:48,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:18:48,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 52 states and 89 transitions. [2021-11-22 23:18:48,775 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 89 transitions. [2021-11-22 23:18:48,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-22 23:18:48,775 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:18:48,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:18:48,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:18:48,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-22 23:18:48,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:18:48,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-22 23:18:49,197 INFO L354 Elim1Store]: treesize reduction 277, result has 15.3 percent of original size [2021-11-22 23:18:49,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 101 treesize of output 117 [2021-11-22 23:18:49,215 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 23:18:49,258 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-11-22 23:18:49,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 52 [2021-11-22 23:18:49,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-11-22 23:18:49,650 INFO L354 Elim1Store]: treesize reduction 277, result has 15.3 percent of original size [2021-11-22 23:18:49,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 101 treesize of output 117 [2021-11-22 23:18:49,670 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 23:18:49,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:18:49,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:18:49,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:18:49,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 43 [2021-11-22 23:18:49,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-11-22 23:18:50,185 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:18:52,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:18:52,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 57 states and 97 transitions. [2021-11-22 23:18:52,911 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 97 transitions. [2021-11-22 23:18:52,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-22 23:18:52,915 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:18:52,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:18:52,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:18:52,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-22 23:18:52,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:18:53,116 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-22 23:18:53,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:18:53,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 58 states and 98 transitions. [2021-11-22 23:18:53,624 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 98 transitions. [2021-11-22 23:18:53,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-22 23:18:53,625 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:18:53,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:18:53,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:18:53,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-22 23:18:53,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:18:53,719 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-22 23:19:13,588 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 19.61s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 23:19:13,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:19:13,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 56 states and 95 transitions. [2021-11-22 23:19:13,962 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 95 transitions. [2021-11-22 23:19:13,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-22 23:19:13,963 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:19:13,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:19:14,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:19:14,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-22 23:19:14,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:19:14,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-22 23:19:14,127 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 23:19:14,226 INFO L354 Elim1Store]: treesize reduction 70, result has 17.6 percent of original size [2021-11-22 23:19:14,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 76 [2021-11-22 23:19:14,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:19:14,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 9 [2021-11-22 23:19:14,501 INFO L354 Elim1Store]: treesize reduction 56, result has 23.3 percent of original size [2021-11-22 23:19:14,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 30 treesize of output 32 [2021-11-22 23:19:14,920 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-22 23:19:14,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 case distinctions, treesize of input 41 treesize of output 35 [2021-11-22 23:19:15,221 INFO L354 Elim1Store]: treesize reduction 552, result has 11.7 percent of original size [2021-11-22 23:19:15,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 18 case distinctions, treesize of input 117 treesize of output 146 [2021-11-22 23:19:15,258 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 23:19:15,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:19:15,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:19:15,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:19:15,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:19:15,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:19:15,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:19:15,293 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 23:19:15,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:19:15,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 60 [2021-11-22 23:19:15,530 INFO L354 Elim1Store]: treesize reduction 82, result has 17.2 percent of original size [2021-11-22 23:19:15,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 case distinctions, treesize of input 47 treesize of output 37 [2021-11-22 23:19:15,885 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-22 23:19:15,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 case distinctions, treesize of input 41 treesize of output 35 [2021-11-22 23:19:16,197 INFO L354 Elim1Store]: treesize reduction 552, result has 11.7 percent of original size [2021-11-22 23:19:16,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 18 case distinctions, treesize of input 117 treesize of output 146 [2021-11-22 23:19:16,224 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 23:19:16,269 INFO L354 Elim1Store]: treesize reduction 162, result has 1.8 percent of original size [2021-11-22 23:19:16,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 116 treesize of output 68 [2021-11-22 23:19:16,467 INFO L354 Elim1Store]: treesize reduction 82, result has 17.2 percent of original size [2021-11-22 23:19:16,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 case distinctions, treesize of input 47 treesize of output 37 [2021-11-22 23:19:16,876 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:19:23,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:19:23,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 64 states and 116 transitions. [2021-11-22 23:19:23,834 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 116 transitions. [2021-11-22 23:19:23,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-22 23:19:23,835 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:19:23,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:19:23,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:19:23,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-22 23:19:23,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:19:23,918 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-22 23:19:25,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:19:25,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 65 states and 117 transitions. [2021-11-22 23:19:25,109 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 117 transitions. [2021-11-22 23:19:25,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-22 23:19:25,110 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:19:25,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:19:25,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:19:25,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-22 23:19:25,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:19:26,152 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-22 23:19:31,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:19:31,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 70 states and 124 transitions. [2021-11-22 23:19:31,269 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 124 transitions. [2021-11-22 23:19:31,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-22 23:19:31,270 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:19:31,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:19:31,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:19:31,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-22 23:19:31,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:19:31,341 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-22 23:19:35,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:19:35,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 73 states and 128 transitions. [2021-11-22 23:19:35,260 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 128 transitions. [2021-11-22 23:19:35,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-22 23:19:35,260 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:19:35,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:19:35,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:19:35,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-22 23:19:35,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:19:35,790 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-22 23:19:40,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:19:40,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 77 states and 135 transitions. [2021-11-22 23:19:40,597 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 135 transitions. [2021-11-22 23:19:40,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-22 23:19:40,597 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:19:40,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:19:40,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:19:40,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-22 23:19:40,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:19:40,657 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-22 23:19:41,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:19:41,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 76 states and 131 transitions. [2021-11-22 23:19:41,316 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 131 transitions. [2021-11-22 23:19:41,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-22 23:19:41,316 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:19:41,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:19:41,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:19:41,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-22 23:19:41,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:19:43,221 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-22 23:19:52,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:19:52,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 80 states and 136 transitions. [2021-11-22 23:19:52,026 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 136 transitions. [2021-11-22 23:19:52,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-22 23:19:52,026 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:19:52,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:19:52,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:19:52,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-22 23:19:52,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:19:52,111 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-22 23:19:53,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:19:53,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 81 states and 137 transitions. [2021-11-22 23:19:53,930 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 137 transitions. [2021-11-22 23:19:53,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-22 23:19:53,930 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:19:53,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:19:53,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:19:53,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 23:19:53,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:19:54,184 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-22 23:20:03,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:20:03,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 88 states and 147 transitions. [2021-11-22 23:20:03,839 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 147 transitions. [2021-11-22 23:20:03,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-22 23:20:03,839 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:20:03,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:20:03,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:20:03,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-22 23:20:03,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:20:03,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-22 23:20:03,971 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 23:20:04,632 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-22 23:20:04,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-11-22 23:20:06,561 INFO L354 Elim1Store]: treesize reduction 414, result has 14.1 percent of original size [2021-11-22 23:20:06,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 110 treesize of output 138 [2021-11-22 23:20:06,606 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 23:20:06,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:20:06,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:20:06,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:20:06,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:20:06,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:20:06,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:20:06,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 53 [2021-11-22 23:20:07,594 INFO L354 Elim1Store]: treesize reduction 429, result has 11.0 percent of original size [2021-11-22 23:20:07,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 110 treesize of output 123 [2021-11-22 23:20:07,612 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 23:20:07,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:20:07,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:20:07,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:20:07,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 46 [2021-11-22 23:20:08,417 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-11-22 23:20:08,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 40 treesize of output 27 [2021-11-22 23:20:10,463 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-22 23:20:10,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 case distinctions, treesize of input 34 treesize of output 32 [2021-11-22 23:20:11,374 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-11-22 23:20:11,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 40 treesize of output 27 [2021-11-22 23:20:12,321 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-11-22 23:20:12,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 40 treesize of output 27 [2021-11-22 23:20:15,525 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:20:31,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:20:31,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 89 states and 148 transitions. [2021-11-22 23:20:31,165 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 148 transitions. [2021-11-22 23:20:31,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-22 23:20:31,166 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:20:31,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:20:31,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:20:31,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-22 23:20:31,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:20:32,010 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-22 23:20:35,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:20:35,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 90 states and 149 transitions. [2021-11-22 23:20:35,751 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 149 transitions. [2021-11-22 23:20:35,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-22 23:20:35,752 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:20:35,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:20:35,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:20:35,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-22 23:20:35,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:20:35,830 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-22 23:20:46,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:20:46,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 95 states and 155 transitions. [2021-11-22 23:20:46,609 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 155 transitions. [2021-11-22 23:20:46,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-22 23:20:46,610 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:20:46,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:20:46,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:20:46,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-22 23:20:46,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:20:46,725 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-22 23:20:55,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:20:55,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 89 states and 147 transitions. [2021-11-22 23:20:55,077 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 147 transitions. [2021-11-22 23:20:55,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-22 23:20:55,078 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:20:55,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:20:55,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:20:55,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-22 23:20:55,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:20:55,262 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 23:20:55,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-22 23:20:55,362 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-22 23:20:55,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-11-22 23:20:55,772 INFO L354 Elim1Store]: treesize reduction 204, result has 18.1 percent of original size [2021-11-22 23:20:55,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 91 treesize of output 117 [2021-11-22 23:20:55,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:20:55,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:20:55,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:20:55,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 24 [2021-11-22 23:20:57,097 INFO L354 Elim1Store]: treesize reduction 104, result has 20.0 percent of original size [2021-11-22 23:20:57,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 39 treesize of output 44 [2021-11-22 23:20:59,913 INFO L354 Elim1Store]: treesize reduction 721, result has 10.1 percent of original size [2021-11-22 23:20:59,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 25 case distinctions, treesize of input 126 treesize of output 157 [2021-11-22 23:20:59,996 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 23:21:00,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:21:00,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:21:00,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:21:00,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:21:00,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:21:00,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:21:00,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:21:00,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:21:00,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:21:00,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:21:00,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 58 [2021-11-22 23:21:01,452 INFO L354 Elim1Store]: treesize reduction 144, result has 15.3 percent of original size [2021-11-22 23:21:01,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 9 case distinctions, treesize of input 56 treesize of output 49 [2021-11-22 23:21:02,545 INFO L354 Elim1Store]: treesize reduction 144, result has 15.3 percent of original size [2021-11-22 23:21:02,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 9 case distinctions, treesize of input 56 treesize of output 49 [2021-11-22 23:21:03,895 INFO L354 Elim1Store]: treesize reduction 144, result has 15.3 percent of original size [2021-11-22 23:21:03,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 9 case distinctions, treesize of input 56 treesize of output 49 [2021-11-22 23:21:07,048 INFO L354 Elim1Store]: treesize reduction 713, result has 11.1 percent of original size [2021-11-22 23:21:07,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 25 case distinctions, treesize of input 126 treesize of output 165 [2021-11-22 23:21:07,072 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 23:21:07,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:21:07,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:21:07,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:21:07,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:21:07,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:21:07,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:21:07,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:21:07,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:21:07,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:21:07,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:21:07,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 63 [2021-11-22 23:21:08,907 INFO L354 Elim1Store]: treesize reduction 144, result has 15.3 percent of original size [2021-11-22 23:21:08,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 9 case distinctions, treesize of input 56 treesize of output 49 [2021-11-22 23:21:10,450 INFO L354 Elim1Store]: treesize reduction 144, result has 15.3 percent of original size [2021-11-22 23:21:10,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 9 case distinctions, treesize of input 56 treesize of output 49 [2021-11-22 23:21:11,966 INFO L354 Elim1Store]: treesize reduction 144, result has 15.3 percent of original size [2021-11-22 23:21:11,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 9 case distinctions, treesize of input 56 treesize of output 49 [2021-11-22 23:21:15,551 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:22:27,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:22:27,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 99 states and 173 transitions. [2021-11-22 23:22:27,361 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 173 transitions. [2021-11-22 23:22:27,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-22 23:22:27,362 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:22:27,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:22:27,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:22:27,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-22 23:22:27,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:22:36,237 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-22 23:23:26,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:23:26,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 105 states and 181 transitions. [2021-11-22 23:23:26,236 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 181 transitions. [2021-11-22 23:23:26,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-22 23:23:26,236 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:23:26,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:23:26,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:23:26,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-22 23:23:26,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:23:26,308 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-22 23:23:55,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:23:55,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 109 states and 187 transitions. [2021-11-22 23:23:55,371 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 187 transitions. [2021-11-22 23:23:55,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-22 23:23:55,372 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:23:55,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:23:55,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:23:55,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-22 23:23:55,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:23:58,869 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-22 23:24:43,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:24:43,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 114 states and 195 transitions. [2021-11-22 23:24:43,798 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 195 transitions. [2021-11-22 23:24:43,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-22 23:24:43,799 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:24:43,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:24:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:24:43,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-22 23:24:43,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:24:43,870 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-22 23:25:09,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:25:09,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 116 states and 197 transitions. [2021-11-22 23:25:09,030 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 197 transitions. [2021-11-22 23:25:09,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-22 23:25:09,031 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:25:09,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:25:09,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:25:09,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-22 23:25:09,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:25:09,131 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-22 23:25:14,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:25:14,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 112 states and 189 transitions. [2021-11-22 23:25:14,040 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 189 transitions. [2021-11-22 23:25:14,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-22 23:25:14,040 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:25:14,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:25:14,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:25:14,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-22 23:25:14,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:25:32,780 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-22 23:26:54,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:26:54,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 117 states and 195 transitions. [2021-11-22 23:26:54,685 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 195 transitions. [2021-11-22 23:26:54,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-22 23:26:54,686 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:26:54,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:26:54,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:26:54,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-22 23:26:54,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:26:54,765 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-22 23:27:05,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:27:05,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 118 states and 196 transitions. [2021-11-22 23:27:05,310 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 196 transitions. [2021-11-22 23:27:05,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-22 23:27:05,310 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:27:05,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:27:05,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:27:05,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-22 23:27:05,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:27:08,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-22 23:27:17,564 INFO L354 Elim1Store]: treesize reduction 277, result has 15.3 percent of original size [2021-11-22 23:27:17,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 101 treesize of output 117 [2021-11-22 23:27:17,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:27:17,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:27:17,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:27:17,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 49 [2021-11-22 23:27:21,642 INFO L354 Elim1Store]: treesize reduction 277, result has 15.3 percent of original size [2021-11-22 23:27:21,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 101 treesize of output 117 [2021-11-22 23:27:21,743 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-11-22 23:27:21,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 54 [2021-11-22 23:27:24,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-11-22 23:27:34,325 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-22 23:27:34,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 25 treesize of output 20 [2021-11-22 23:27:38,406 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-11-22 23:27:38,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 31 treesize of output 24 [2021-11-22 23:27:42,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-11-22 23:28:00,808 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:30:33,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:30:33,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 125 states and 208 transitions. [2021-11-22 23:30:33,593 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 208 transitions. [2021-11-22 23:30:33,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-22 23:30:33,594 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:30:33,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:30:33,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:30:33,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-22 23:30:33,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:30:33,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-22 23:30:35,437 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-22 23:30:35,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-11-22 23:30:39,897 INFO L354 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2021-11-22 23:30:39,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 32 treesize of output 34 [2021-11-22 23:30:51,284 INFO L354 Elim1Store]: treesize reduction 563, result has 13.3 percent of original size [2021-11-22 23:30:51,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 18 case distinctions, treesize of input 119 treesize of output 159 [2021-11-22 23:30:51,308 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 23:30:51,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:30:51,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:30:51,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:30:51,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:30:51,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:30:51,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:30:51,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:30:51,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:30:51,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:30:51,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:30:51,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 71 [2021-11-22 23:30:56,339 INFO L354 Elim1Store]: treesize reduction 92, result has 17.1 percent of original size [2021-11-22 23:30:56,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 case distinctions, treesize of input 49 treesize of output 39 [2021-11-22 23:31:00,400 INFO L354 Elim1Store]: treesize reduction 92, result has 17.1 percent of original size [2021-11-22 23:31:00,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 case distinctions, treesize of input 49 treesize of output 39 [2021-11-22 23:31:05,680 INFO L354 Elim1Store]: treesize reduction 92, result has 17.1 percent of original size [2021-11-22 23:31:05,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 case distinctions, treesize of input 49 treesize of output 39 [2021-11-22 23:31:18,229 INFO L354 Elim1Store]: treesize reduction 132, result has 17.5 percent of original size [2021-11-22 23:31:18,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 9 case distinctions, treesize of input 43 treesize of output 44 [2021-11-22 23:31:23,870 INFO L354 Elim1Store]: treesize reduction 92, result has 17.1 percent of original size [2021-11-22 23:31:23,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 case distinctions, treesize of input 49 treesize of output 39 [2021-11-22 23:31:29,531 INFO L354 Elim1Store]: treesize reduction 584, result has 10.0 percent of original size [2021-11-22 23:31:29,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 18 case distinctions, treesize of input 119 treesize of output 138 [2021-11-22 23:31:29,691 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 23:31:29,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:31:29,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:31:29,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:31:29,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:31:29,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:31:29,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 23:31:29,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 60 [2021-11-22 23:31:34,703 INFO L354 Elim1Store]: treesize reduction 92, result has 17.1 percent of original size [2021-11-22 23:31:34,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 case distinctions, treesize of input 49 treesize of output 39 [2021-11-22 23:31:54,510 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.