./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d50c6a-8a5b-4280-a4bd-7b9edaaa8968/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d50c6a-8a5b-4280-a4bd-7b9edaaa8968/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d50c6a-8a5b-4280-a4bd-7b9edaaa8968/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d50c6a-8a5b-4280-a4bd-7b9edaaa8968/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d50c6a-8a5b-4280-a4bd-7b9edaaa8968/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d50c6a-8a5b-4280-a4bd-7b9edaaa8968/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 234112184b071eb42f340136dfce6e1a552d788d086baea007a05a3140f2d157 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 02:28:10,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:28:10,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:28:10,290 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:28:10,291 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:28:10,292 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:28:10,294 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:28:10,296 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:28:10,299 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:28:10,300 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:28:10,301 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:28:10,303 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:28:10,304 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:28:10,305 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:28:10,307 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:28:10,309 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:28:10,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:28:10,311 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:28:10,314 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:28:10,316 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:28:10,318 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:28:10,327 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:28:10,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:28:10,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:28:10,339 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:28:10,346 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:28:10,347 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:28:10,348 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:28:10,349 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:28:10,350 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:28:10,351 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:28:10,353 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:28:10,355 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:28:10,357 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:28:10,359 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:28:10,360 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:28:10,361 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:28:10,361 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:28:10,362 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:28:10,364 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:28:10,367 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:28:10,368 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d50c6a-8a5b-4280-a4bd-7b9edaaa8968/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 02:28:10,414 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:28:10,417 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:28:10,418 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:28:10,418 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:28:10,419 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:28:10,419 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:28:10,420 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:28:10,420 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:28:10,420 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:28:10,421 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:28:10,422 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:28:10,422 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:28:10,423 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:28:10,423 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:28:10,423 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:28:10,424 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:28:10,424 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:28:10,424 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:28:10,425 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:28:10,425 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:28:10,426 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:28:10,426 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:28:10,426 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:28:10,426 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:28:10,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:28:10,427 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:28:10,427 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:28:10,427 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:28:10,428 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:28:10,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:28:10,428 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:28:10,429 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:28:10,429 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:28:10,430 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:28:10,430 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:28:10,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:28:10,431 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:28:10,431 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:28:10,431 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_90d50c6a-8a5b-4280-a4bd-7b9edaaa8968/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d50c6a-8a5b-4280-a4bd-7b9edaaa8968/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 234112184b071eb42f340136dfce6e1a552d788d086baea007a05a3140f2d157 [2022-11-22 02:28:10,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:28:10,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:28:10,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:28:10,838 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:28:10,838 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:28:10,840 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d50c6a-8a5b-4280-a4bd-7b9edaaa8968/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2022-11-22 02:28:14,434 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:28:15,126 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:28:15,127 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d50c6a-8a5b-4280-a4bd-7b9edaaa8968/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2022-11-22 02:28:15,193 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d50c6a-8a5b-4280-a4bd-7b9edaaa8968/bin/utaipan-g80aRyZoba/data/118a0dde5/b154a2080b794f97aa90a8b47f6a3b7e/FLAGcffdc6b55 [2022-11-22 02:28:15,213 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d50c6a-8a5b-4280-a4bd-7b9edaaa8968/bin/utaipan-g80aRyZoba/data/118a0dde5/b154a2080b794f97aa90a8b47f6a3b7e [2022-11-22 02:28:15,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:28:15,222 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:28:15,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:28:15,229 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:28:15,233 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:28:15,235 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:28:15" (1/1) ... [2022-11-22 02:28:15,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bdd0d23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:28:15, skipping insertion in model container [2022-11-22 02:28:15,237 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:28:15" (1/1) ... [2022-11-22 02:28:15,247 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:28:15,408 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:28:17,953 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d50c6a-8a5b-4280-a4bd-7b9edaaa8968/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i[254896,254909] [2022-11-22 02:28:18,026 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:28:18,169 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:28:18,658 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d50c6a-8a5b-4280-a4bd-7b9edaaa8968/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i[254896,254909] [2022-11-22 02:28:18,673 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:28:18,939 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:28:18,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:28:18 WrapperNode [2022-11-22 02:28:18,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:28:18,941 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:28:18,942 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:28:18,942 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:28:18,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:28:18" (1/1) ... [2022-11-22 02:28:19,103 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:28:18" (1/1) ... [2022-11-22 02:28:19,344 INFO L138 Inliner]: procedures = 286, calls = 3934, calls flagged for inlining = 140, calls inlined = 119, statements flattened = 8095 [2022-11-22 02:28:19,344 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:28:19,345 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:28:19,345 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:28:19,346 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:28:19,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:28:18" (1/1) ... [2022-11-22 02:28:19,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:28:18" (1/1) ... [2022-11-22 02:28:19,397 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:28:18" (1/1) ... [2022-11-22 02:28:19,398 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:28:18" (1/1) ... [2022-11-22 02:28:19,652 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:28:18" (1/1) ... [2022-11-22 02:28:19,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:28:18" (1/1) ... [2022-11-22 02:28:19,747 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:28:18" (1/1) ... [2022-11-22 02:28:19,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:28:18" (1/1) ... [2022-11-22 02:28:19,839 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:28:19,841 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:28:19,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:28:19,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:28:19,842 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:28:18" (1/1) ... [2022-11-22 02:28:19,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:28:19,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d50c6a-8a5b-4280-a4bd-7b9edaaa8968/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:28:19,879 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d50c6a-8a5b-4280-a4bd-7b9edaaa8968/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:28:19,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d50c6a-8a5b-4280-a4bd-7b9edaaa8968/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:28:19,937 INFO L130 BoogieDeclarations]: Found specification of procedure acm_disconnect [2022-11-22 02:28:19,937 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_disconnect [2022-11-22 02:28:19,937 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_hangup [2022-11-22 02:28:19,937 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_hangup [2022-11-22 02:28:19,937 INFO L130 BoogieDeclarations]: Found specification of procedure __cmpxchg_wrong_size [2022-11-22 02:28:19,938 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-11-22 02:28:19,938 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-11-22 02:28:19,938 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-22 02:28:19,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-22 02:28:19,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-22 02:28:19,939 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 02:28:19,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 02:28:19,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-22 02:28:19,939 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-22 02:28:19,939 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2022-11-22 02:28:19,940 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2022-11-22 02:28:19,940 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_cleanup [2022-11-22 02:28:19,940 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_cleanup [2022-11-22 02:28:19,941 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-22 02:28:19,941 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-22 02:28:19,941 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-22 02:28:19,941 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-22 02:28:19,941 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-22 02:28:19,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-22 02:28:19,942 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 02:28:19,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 02:28:19,944 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2022-11-22 02:28:19,944 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2022-11-22 02:28:19,945 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_get_interface [2022-11-22 02:28:19,945 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_get_interface [2022-11-22 02:28:19,945 INFO L130 BoogieDeclarations]: Found specification of procedure acm_write_buffers_free [2022-11-22 02:28:19,945 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_write_buffers_free [2022-11-22 02:28:19,946 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-22 02:28:19,946 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-22 02:28:19,947 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-11-22 02:28:19,947 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-11-22 02:28:19,947 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-22 02:28:19,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-22 02:28:19,948 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2022-11-22 02:28:19,948 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2022-11-22 02:28:19,948 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-11-22 02:28:19,948 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-11-22 02:28:19,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-22 02:28:19,949 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-22 02:28:19,949 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-22 02:28:19,949 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-22 02:28:19,949 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-22 02:28:19,950 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-22 02:28:19,950 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_put [2022-11-22 02:28:19,951 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_put [2022-11-22 02:28:19,951 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_chars_in_buffer [2022-11-22 02:28:19,951 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_chars_in_buffer [2022-11-22 02:28:19,952 INFO L130 BoogieDeclarations]: Found specification of procedure acm_resume [2022-11-22 02:28:19,952 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_resume [2022-11-22 02:28:19,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 02:28:19,953 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-22 02:28:19,953 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-22 02:28:19,953 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-22 02:28:19,953 INFO L130 BoogieDeclarations]: Found specification of procedure acm_ctrl_msg [2022-11-22 02:28:19,954 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_ctrl_msg [2022-11-22 02:28:19,954 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2022-11-22 02:28:19,954 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2022-11-22 02:28:19,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 02:28:19,954 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_hangup [2022-11-22 02:28:19,955 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_hangup [2022-11-22 02:28:19,955 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ifnum_to_if [2022-11-22 02:28:19,955 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ifnum_to_if [2022-11-22 02:28:19,955 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-22 02:28:19,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-22 02:28:19,955 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-22 02:28:19,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-22 02:28:19,956 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-22 02:28:19,956 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-22 02:28:19,957 INFO L130 BoogieDeclarations]: Found specification of procedure acm_softint [2022-11-22 02:28:19,957 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_softint [2022-11-22 02:28:19,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 02:28:19,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 02:28:19,958 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-11-22 02:28:19,958 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-11-22 02:28:19,959 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2022-11-22 02:28:19,959 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2022-11-22 02:28:19,959 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-22 02:28:19,959 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-22 02:28:19,960 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-22 02:28:19,960 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-22 02:28:19,960 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_tiocmget [2022-11-22 02:28:19,960 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_tiocmget [2022-11-22 02:28:19,960 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-11-22 02:28:19,961 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-11-22 02:28:19,961 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_set_termios [2022-11-22 02:28:19,961 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_set_termios [2022-11-22 02:28:19,962 INFO L130 BoogieDeclarations]: Found specification of procedure usb_clear_halt [2022-11-22 02:28:19,963 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_clear_halt [2022-11-22 02:28:19,963 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_from_anchor [2022-11-22 02:28:19,963 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_from_anchor [2022-11-22 02:28:19,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-22 02:28:19,963 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_break_ctl [2022-11-22 02:28:19,964 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_break_ctl [2022-11-22 02:28:19,964 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-22 02:28:19,964 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-22 02:28:19,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 02:28:19,965 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface [2022-11-22 02:28:19,965 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface [2022-11-22 02:28:19,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 02:28:19,965 INFO L130 BoogieDeclarations]: Found specification of procedure acm_start_wb [2022-11-22 02:28:19,966 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_start_wb [2022-11-22 02:28:19,966 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2022-11-22 02:28:19,966 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2022-11-22 02:28:19,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-22 02:28:19,967 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-22 02:28:19,968 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-22 02:28:19,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-22 02:28:19,972 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_throttle [2022-11-22 02:28:19,972 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_throttle [2022-11-22 02:28:19,972 INFO L130 BoogieDeclarations]: Found specification of procedure acm_wb_is_avail [2022-11-22 02:28:19,974 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_wb_is_avail [2022-11-22 02:28:19,974 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-22 02:28:19,975 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-22 02:28:19,975 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-22 02:28:19,976 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-22 02:28:19,981 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-22 02:28:19,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-22 02:28:19,981 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_write_room [2022-11-22 02:28:19,981 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_write_room [2022-11-22 02:28:19,981 INFO L130 BoogieDeclarations]: Found specification of procedure acm_submit_read_urb [2022-11-22 02:28:19,982 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_submit_read_urb [2022-11-22 02:28:19,982 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2022-11-22 02:28:19,982 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2022-11-22 02:28:19,982 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-22 02:28:19,982 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-22 02:28:19,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 02:28:19,983 INFO L130 BoogieDeclarations]: Found specification of procedure acm_set_control [2022-11-22 02:28:19,983 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_set_control [2022-11-22 02:28:19,983 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-22 02:28:19,983 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-22 02:28:19,983 INFO L130 BoogieDeclarations]: Found specification of procedure acm_write_done [2022-11-22 02:28:19,983 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_write_done [2022-11-22 02:28:19,984 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_ioctl [2022-11-22 02:28:19,984 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_ioctl [2022-11-22 02:28:19,984 INFO L130 BoogieDeclarations]: Found specification of procedure acm_release_minor [2022-11-22 02:28:19,984 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_release_minor [2022-11-22 02:28:19,984 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-22 02:28:19,985 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-22 02:28:19,985 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 02:28:19,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 02:28:19,985 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2022-11-22 02:28:19,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2022-11-22 02:28:19,985 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface_async [2022-11-22 02:28:19,986 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface_async [2022-11-22 02:28:19,986 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_unthrottle [2022-11-22 02:28:19,986 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_unthrottle [2022-11-22 02:28:19,986 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-22 02:28:19,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-22 02:28:19,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 02:28:19,987 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-22 02:28:19,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-22 02:28:19,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:28:19,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 02:28:19,988 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-22 02:28:19,988 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-22 02:28:19,989 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-22 02:28:19,989 INFO L130 BoogieDeclarations]: Found specification of procedure acm_port_dtr_rts [2022-11-22 02:28:19,989 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_port_dtr_rts [2022-11-22 02:28:19,989 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-22 02:28:19,990 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-22 02:28:19,990 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-22 02:28:19,990 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-22 02:28:19,990 INFO L130 BoogieDeclarations]: Found specification of procedure acm_read_buffers_free [2022-11-22 02:28:19,990 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_read_buffers_free [2022-11-22 02:28:19,991 INFO L130 BoogieDeclarations]: Found specification of procedure acm_submit_read_urbs [2022-11-22 02:28:19,991 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_submit_read_urbs [2022-11-22 02:28:19,991 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_install [2022-11-22 02:28:19,991 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_install [2022-11-22 02:28:19,991 INFO L130 BoogieDeclarations]: Found specification of procedure stop_data_traffic [2022-11-22 02:28:19,991 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_data_traffic [2022-11-22 02:28:19,992 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-22 02:28:19,992 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-22 02:28:19,992 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-22 02:28:19,992 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-22 02:28:19,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:28:19,993 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-11-22 02:28:19,993 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-11-22 02:28:19,993 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2022-11-22 02:28:19,994 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2022-11-22 02:28:19,996 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_tiocmset [2022-11-22 02:28:19,996 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_tiocmset [2022-11-22 02:28:19,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:28:19,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:28:19,996 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2022-11-22 02:28:19,996 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2022-11-22 02:28:19,997 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-22 02:28:19,997 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-22 02:28:20,954 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:28:20,967 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:28:21,289 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 02:28:43,624 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:28:45,461 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:28:45,461 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 02:28:45,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:28:45 BoogieIcfgContainer [2022-11-22 02:28:45,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:28:45,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:28:45,477 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:28:45,481 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:28:45,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:28:15" (1/3) ... [2022-11-22 02:28:45,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27fabdb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:28:45, skipping insertion in model container [2022-11-22 02:28:45,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:28:18" (2/3) ... [2022-11-22 02:28:45,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27fabdb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:28:45, skipping insertion in model container [2022-11-22 02:28:45,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:28:45" (3/3) ... [2022-11-22 02:28:45,491 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2022-11-22 02:28:45,518 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:28:45,518 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 02:28:45,655 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:28:45,668 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@8c363fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:28:45,668 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 02:28:45,684 INFO L276 IsEmpty]: Start isEmpty. Operand has 1151 states, 721 states have (on average 1.3564493758668517) internal successors, (978), 737 states have internal predecessors, (978), 343 states have call successors, (343), 86 states have call predecessors, (343), 85 states have return successors, (334), 334 states have call predecessors, (334), 334 states have call successors, (334) [2022-11-22 02:28:45,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-11-22 02:28:45,727 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:28:45,728 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:28:45,729 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:28:45,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:28:45,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1351770065, now seen corresponding path program 1 times [2022-11-22 02:28:45,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:28:45,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48165558] [2022-11-22 02:28:45,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:28:45,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:28:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:28:48,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1106 trivial. 0 not checked. [2022-11-22 02:28:48,449 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:28:48,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48165558] [2022-11-22 02:28:48,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48165558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:28:48,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:28:48,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:28:48,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904376216] [2022-11-22 02:28:48,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:28:48,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:28:48,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:28:48,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:28:48,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:28:48,539 INFO L87 Difference]: Start difference. First operand has 1151 states, 721 states have (on average 1.3564493758668517) internal successors, (978), 737 states have internal predecessors, (978), 343 states have call successors, (343), 86 states have call predecessors, (343), 85 states have return successors, (334), 334 states have call predecessors, (334), 334 states have call successors, (334) Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-22 02:28:50,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:28:53,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:28:57,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:28:58,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:28:58,869 INFO L93 Difference]: Finished difference Result 3082 states and 4450 transitions. [2022-11-22 02:28:58,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:28:58,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 274 [2022-11-22 02:28:58,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:28:58,908 INFO L225 Difference]: With dead ends: 3082 [2022-11-22 02:28:58,908 INFO L226 Difference]: Without dead ends: 1945 [2022-11-22 02:28:58,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:28:58,923 INFO L413 NwaCegarLoop]: 1658 mSDtfsCounter, 1161 mSDsluCounter, 1428 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1161 SdHoareTripleChecker+Valid, 3086 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:28:58,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1161 Valid, 3086 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 437 Invalid, 3 Unknown, 0 Unchecked, 10.0s Time] [2022-11-22 02:28:58,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1945 states. [2022-11-22 02:28:59,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1945 to 1933. [2022-11-22 02:28:59,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1933 states, 1246 states have (on average 1.3579454253611556) internal successors, (1692), 1255 states have internal predecessors, (1692), 532 states have call successors, (532), 155 states have call predecessors, (532), 154 states have return successors, (531), 530 states have call predecessors, (531), 531 states have call successors, (531) [2022-11-22 02:28:59,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1933 states to 1933 states and 2755 transitions. [2022-11-22 02:28:59,151 INFO L78 Accepts]: Start accepts. Automaton has 1933 states and 2755 transitions. Word has length 274 [2022-11-22 02:28:59,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:28:59,153 INFO L495 AbstractCegarLoop]: Abstraction has 1933 states and 2755 transitions. [2022-11-22 02:28:59,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-22 02:28:59,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1933 states and 2755 transitions. [2022-11-22 02:28:59,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2022-11-22 02:28:59,165 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:28:59,166 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:28:59,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:28:59,167 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:28:59,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:28:59,168 INFO L85 PathProgramCache]: Analyzing trace with hash 640210434, now seen corresponding path program 1 times [2022-11-22 02:28:59,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:28:59,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093803715] [2022-11-22 02:28:59,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:28:59,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:29:00,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:29:01,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1106 trivial. 0 not checked. [2022-11-22 02:29:01,290 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:29:01,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093803715] [2022-11-22 02:29:01,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093803715] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:29:01,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:29:01,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:29:01,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167292903] [2022-11-22 02:29:01,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:29:01,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:29:01,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:29:01,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:29:01,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:29:01,298 INFO L87 Difference]: Start difference. First operand 1933 states and 2755 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-22 02:29:03,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:29:06,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:29:10,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:29:11,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:29:11,679 INFO L93 Difference]: Finished difference Result 4960 states and 7047 transitions. [2022-11-22 02:29:11,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:29:11,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 276 [2022-11-22 02:29:11,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:29:11,707 INFO L225 Difference]: With dead ends: 4960 [2022-11-22 02:29:11,708 INFO L226 Difference]: Without dead ends: 3076 [2022-11-22 02:29:11,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:29:11,720 INFO L413 NwaCegarLoop]: 1672 mSDtfsCounter, 877 mSDsluCounter, 1402 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 3074 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:29:11,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [877 Valid, 3074 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 452 Invalid, 3 Unknown, 0 Unchecked, 10.1s Time] [2022-11-22 02:29:11,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3076 states. [2022-11-22 02:29:11,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3076 to 3073. [2022-11-22 02:29:11,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3073 states, 2005 states have (on average 1.366583541147132) internal successors, (2740), 2019 states have internal predecessors, (2740), 810 states have call successors, (810), 258 states have call predecessors, (810), 257 states have return successors, (809), 807 states have call predecessors, (809), 809 states have call successors, (809) [2022-11-22 02:29:11,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3073 states to 3073 states and 4359 transitions. [2022-11-22 02:29:11,925 INFO L78 Accepts]: Start accepts. Automaton has 3073 states and 4359 transitions. Word has length 276 [2022-11-22 02:29:11,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:29:11,931 INFO L495 AbstractCegarLoop]: Abstraction has 3073 states and 4359 transitions. [2022-11-22 02:29:11,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-22 02:29:11,932 INFO L276 IsEmpty]: Start isEmpty. Operand 3073 states and 4359 transitions. [2022-11-22 02:29:11,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-11-22 02:29:11,942 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:29:11,943 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:29:11,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:29:11,943 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:29:11,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:29:11,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1065883816, now seen corresponding path program 1 times [2022-11-22 02:29:11,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:29:11,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772234430] [2022-11-22 02:29:11,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:29:11,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:29:12,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:29:13,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1106 trivial. 0 not checked. [2022-11-22 02:29:13,775 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:29:13,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772234430] [2022-11-22 02:29:13,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772234430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:29:13,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:29:13,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:29:13,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065779020] [2022-11-22 02:29:13,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:29:13,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:29:13,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:29:13,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:29:13,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:29:13,781 INFO L87 Difference]: Start difference. First operand 3073 states and 4359 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-22 02:29:15,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:29:18,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:29:22,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:29:23,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:29:23,350 INFO L93 Difference]: Finished difference Result 7471 states and 10554 transitions. [2022-11-22 02:29:23,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:29:23,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 274 [2022-11-22 02:29:23,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:29:23,382 INFO L225 Difference]: With dead ends: 7471 [2022-11-22 02:29:23,382 INFO L226 Difference]: Without dead ends: 4447 [2022-11-22 02:29:23,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:29:23,398 INFO L413 NwaCegarLoop]: 1843 mSDtfsCounter, 792 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 3180 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:29:23,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [792 Valid, 3180 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 559 Invalid, 3 Unknown, 0 Unchecked, 9.3s Time] [2022-11-22 02:29:23,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4447 states. [2022-11-22 02:29:23,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4447 to 4436. [2022-11-22 02:29:23,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4436 states, 2921 states have (on average 1.3676823005819925) internal successors, (3995), 2939 states have internal predecessors, (3995), 1128 states have call successors, (1128), 387 states have call predecessors, (1128), 386 states have return successors, (1127), 1125 states have call predecessors, (1127), 1127 states have call successors, (1127) [2022-11-22 02:29:23,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4436 states to 4436 states and 6250 transitions. [2022-11-22 02:29:23,625 INFO L78 Accepts]: Start accepts. Automaton has 4436 states and 6250 transitions. Word has length 274 [2022-11-22 02:29:23,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:29:23,626 INFO L495 AbstractCegarLoop]: Abstraction has 4436 states and 6250 transitions. [2022-11-22 02:29:23,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-22 02:29:23,627 INFO L276 IsEmpty]: Start isEmpty. Operand 4436 states and 6250 transitions. [2022-11-22 02:29:23,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2022-11-22 02:29:23,641 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:29:23,642 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:29:23,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:29:23,643 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:29:23,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:29:23,643 INFO L85 PathProgramCache]: Analyzing trace with hash -887219900, now seen corresponding path program 1 times [2022-11-22 02:29:23,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:29:23,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238900075] [2022-11-22 02:29:23,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:29:23,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:29:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:29:25,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1113 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1106 trivial. 0 not checked. [2022-11-22 02:29:25,604 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:29:25,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238900075] [2022-11-22 02:29:25,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238900075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:29:25,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:29:25,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:29:25,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853711331] [2022-11-22 02:29:25,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:29:25,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:29:25,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:29:25,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:29:25,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:29:25,609 INFO L87 Difference]: Start difference. First operand 4436 states and 6250 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-22 02:29:27,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:29:29,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:29:32,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:29:32,379 INFO L93 Difference]: Finished difference Result 8927 states and 12573 transitions. [2022-11-22 02:29:32,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:29:32,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 309 [2022-11-22 02:29:32,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:29:32,409 INFO L225 Difference]: With dead ends: 8927 [2022-11-22 02:29:32,409 INFO L226 Difference]: Without dead ends: 4540 [2022-11-22 02:29:32,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:29:32,426 INFO L413 NwaCegarLoop]: 1545 mSDtfsCounter, 1532 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1532 SdHoareTripleChecker+Valid, 1753 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:29:32,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1532 Valid, 1753 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 240 Invalid, 2 Unknown, 0 Unchecked, 6.6s Time] [2022-11-22 02:29:32,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4540 states. [2022-11-22 02:29:32,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4540 to 4429. [2022-11-22 02:29:32,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4429 states, 2908 states have (on average 1.3655433287482805) internal successors, (3971), 2930 states have internal predecessors, (3971), 1130 states have call successors, (1130), 391 states have call predecessors, (1130), 390 states have return successors, (1129), 1123 states have call predecessors, (1129), 1129 states have call successors, (1129) [2022-11-22 02:29:32,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4429 states to 4429 states and 6230 transitions. [2022-11-22 02:29:32,684 INFO L78 Accepts]: Start accepts. Automaton has 4429 states and 6230 transitions. Word has length 309 [2022-11-22 02:29:32,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:29:32,685 INFO L495 AbstractCegarLoop]: Abstraction has 4429 states and 6230 transitions. [2022-11-22 02:29:32,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-22 02:29:32,686 INFO L276 IsEmpty]: Start isEmpty. Operand 4429 states and 6230 transitions. [2022-11-22 02:29:32,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2022-11-22 02:29:32,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:29:32,703 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:29:32,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:29:32,703 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:29:32,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:29:32,704 INFO L85 PathProgramCache]: Analyzing trace with hash 116171236, now seen corresponding path program 1 times [2022-11-22 02:29:32,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:29:32,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596887000] [2022-11-22 02:29:32,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:29:32,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:29:33,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:29:34,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1407 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1400 trivial. 0 not checked. [2022-11-22 02:29:34,825 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:29:34,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596887000] [2022-11-22 02:29:34,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596887000] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:29:34,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:29:34,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:29:34,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250345450] [2022-11-22 02:29:34,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:29:34,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:29:34,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:29:34,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:29:34,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:29:34,833 INFO L87 Difference]: Start difference. First operand 4429 states and 6230 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-22 02:29:37,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:29:39,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:29:43,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:29:45,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:29:45,485 INFO L93 Difference]: Finished difference Result 8769 states and 12342 transitions. [2022-11-22 02:29:45,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:29:45,486 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 334 [2022-11-22 02:29:45,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:29:45,513 INFO L225 Difference]: With dead ends: 8769 [2022-11-22 02:29:45,514 INFO L226 Difference]: Without dead ends: 4384 [2022-11-22 02:29:45,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:29:45,530 INFO L413 NwaCegarLoop]: 1417 mSDtfsCounter, 1 mSDsluCounter, 2827 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4244 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:29:45,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4244 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 618 Invalid, 3 Unknown, 0 Unchecked, 10.4s Time] [2022-11-22 02:29:45,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4384 states. [2022-11-22 02:29:45,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4384 to 4378. [2022-11-22 02:29:45,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4378 states, 2876 states have (on average 1.3682197496522948) internal successors, (3935), 2899 states have internal predecessors, (3935), 1117 states have call successors, (1117), 385 states have call predecessors, (1117), 384 states have return successors, (1116), 1109 states have call predecessors, (1116), 1116 states have call successors, (1116) [2022-11-22 02:29:45,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4378 states to 4378 states and 6168 transitions. [2022-11-22 02:29:45,774 INFO L78 Accepts]: Start accepts. Automaton has 4378 states and 6168 transitions. Word has length 334 [2022-11-22 02:29:45,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:29:45,777 INFO L495 AbstractCegarLoop]: Abstraction has 4378 states and 6168 transitions. [2022-11-22 02:29:45,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-22 02:29:45,777 INFO L276 IsEmpty]: Start isEmpty. Operand 4378 states and 6168 transitions. [2022-11-22 02:29:45,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2022-11-22 02:29:45,792 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:29:45,793 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:29:45,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 02:29:45,793 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:29:45,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:29:45,794 INFO L85 PathProgramCache]: Analyzing trace with hash -490183190, now seen corresponding path program 1 times [2022-11-22 02:29:45,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:29:45,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690519735] [2022-11-22 02:29:45,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:29:45,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:29:46,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:29:47,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1407 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1407 trivial. 0 not checked. [2022-11-22 02:29:47,627 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:29:47,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690519735] [2022-11-22 02:29:47,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690519735] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:29:47,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:29:47,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:29:47,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600727165] [2022-11-22 02:29:47,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:29:47,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:29:47,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:29:47,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:29:47,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:29:47,631 INFO L87 Difference]: Start difference. First operand 4378 states and 6168 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-22 02:29:49,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:29:51,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:29:54,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:29:54,147 INFO L93 Difference]: Finished difference Result 4564 states and 6366 transitions. [2022-11-22 02:29:54,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:29:54,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 339 [2022-11-22 02:29:54,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:29:54,172 INFO L225 Difference]: With dead ends: 4564 [2022-11-22 02:29:54,173 INFO L226 Difference]: Without dead ends: 4561 [2022-11-22 02:29:54,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:29:54,177 INFO L413 NwaCegarLoop]: 1430 mSDtfsCounter, 1428 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 1565 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:29:54,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1428 Valid, 1565 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 232 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2022-11-22 02:29:54,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4561 states. [2022-11-22 02:29:54,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4561 to 4561. [2022-11-22 02:29:54,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4561 states, 2988 states have (on average 1.3621151271753682) internal successors, (4070), 3011 states have internal predecessors, (4070), 1144 states have call successors, (1144), 429 states have call predecessors, (1144), 428 states have return successors, (1143), 1136 states have call predecessors, (1143), 1143 states have call successors, (1143) [2022-11-22 02:29:54,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4561 states to 4561 states and 6357 transitions. [2022-11-22 02:29:54,440 INFO L78 Accepts]: Start accepts. Automaton has 4561 states and 6357 transitions. Word has length 339 [2022-11-22 02:29:54,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:29:54,441 INFO L495 AbstractCegarLoop]: Abstraction has 4561 states and 6357 transitions. [2022-11-22 02:29:54,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-22 02:29:54,442 INFO L276 IsEmpty]: Start isEmpty. Operand 4561 states and 6357 transitions. [2022-11-22 02:29:54,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2022-11-22 02:29:54,456 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:29:54,456 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:29:54,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 02:29:54,457 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:29:54,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:29:54,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1538891596, now seen corresponding path program 1 times [2022-11-22 02:29:54,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:29:54,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020330370] [2022-11-22 02:29:54,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:29:54,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:29:55,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:29:55,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1407 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1407 trivial. 0 not checked. [2022-11-22 02:29:55,832 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:29:55,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020330370] [2022-11-22 02:29:55,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020330370] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:29:55,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:29:55,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:29:55,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553298290] [2022-11-22 02:29:55,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:29:55,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:29:55,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:29:55,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:29:55,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:29:55,835 INFO L87 Difference]: Start difference. First operand 4561 states and 6357 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2022-11-22 02:29:58,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:30:00,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:30:03,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:30:04,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:30:04,650 INFO L93 Difference]: Finished difference Result 10580 states and 14745 transitions. [2022-11-22 02:30:04,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:30:04,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 347 [2022-11-22 02:30:04,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:30:04,683 INFO L225 Difference]: With dead ends: 10580 [2022-11-22 02:30:04,684 INFO L226 Difference]: Without dead ends: 6071 [2022-11-22 02:30:04,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:30:04,700 INFO L413 NwaCegarLoop]: 1582 mSDtfsCounter, 854 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 2982 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:30:04,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 2982 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 427 Invalid, 3 Unknown, 0 Unchecked, 8.6s Time] [2022-11-22 02:30:04,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6071 states. [2022-11-22 02:30:04,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6071 to 5197. [2022-11-22 02:30:04,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5197 states, 3408 states have (on average 1.362969483568075) internal successors, (4645), 3433 states have internal predecessors, (4645), 1302 states have call successors, (1302), 487 states have call predecessors, (1302), 486 states have return successors, (1301), 1294 states have call predecessors, (1301), 1301 states have call successors, (1301) [2022-11-22 02:30:04,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5197 states to 5197 states and 7248 transitions. [2022-11-22 02:30:04,987 INFO L78 Accepts]: Start accepts. Automaton has 5197 states and 7248 transitions. Word has length 347 [2022-11-22 02:30:04,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:30:04,988 INFO L495 AbstractCegarLoop]: Abstraction has 5197 states and 7248 transitions. [2022-11-22 02:30:04,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2022-11-22 02:30:04,988 INFO L276 IsEmpty]: Start isEmpty. Operand 5197 states and 7248 transitions. [2022-11-22 02:30:05,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2022-11-22 02:30:05,001 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:30:05,001 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:30:05,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 02:30:05,002 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:30:05,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:30:05,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1927470691, now seen corresponding path program 1 times [2022-11-22 02:30:05,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:30:05,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16299507] [2022-11-22 02:30:05,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:30:05,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:30:05,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:30:06,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1400 trivial. 0 not checked. [2022-11-22 02:30:06,591 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:30:06,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16299507] [2022-11-22 02:30:06,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16299507] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:30:06,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:30:06,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:30:06,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184895350] [2022-11-22 02:30:06,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:30:06,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:30:06,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:30:06,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:30:06,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:30:06,593 INFO L87 Difference]: Start difference. First operand 5197 states and 7248 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-22 02:30:08,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:30:10,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:30:15,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:30:17,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:30:17,485 INFO L93 Difference]: Finished difference Result 13551 states and 18917 transitions. [2022-11-22 02:30:17,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:30:17,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 339 [2022-11-22 02:30:17,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:30:17,529 INFO L225 Difference]: With dead ends: 13551 [2022-11-22 02:30:17,530 INFO L226 Difference]: Without dead ends: 8406 [2022-11-22 02:30:17,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:30:17,545 INFO L413 NwaCegarLoop]: 2027 mSDtfsCounter, 1396 mSDsluCounter, 1302 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 53 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1396 SdHoareTripleChecker+Valid, 3329 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:30:17,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1396 Valid, 3329 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 552 Invalid, 3 Unknown, 0 Unchecked, 10.5s Time] [2022-11-22 02:30:17,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8406 states. [2022-11-22 02:30:17,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8406 to 8399. [2022-11-22 02:30:17,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8399 states, 5547 states have (on average 1.350279430322697) internal successors, (7490), 5588 states have internal predecessors, (7490), 2054 states have call successors, (2054), 798 states have call predecessors, (2054), 797 states have return successors, (2053), 2041 states have call predecessors, (2053), 2053 states have call successors, (2053) [2022-11-22 02:30:18,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8399 states to 8399 states and 11597 transitions. [2022-11-22 02:30:18,161 INFO L78 Accepts]: Start accepts. Automaton has 8399 states and 11597 transitions. Word has length 339 [2022-11-22 02:30:18,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:30:18,162 INFO L495 AbstractCegarLoop]: Abstraction has 8399 states and 11597 transitions. [2022-11-22 02:30:18,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-22 02:30:18,163 INFO L276 IsEmpty]: Start isEmpty. Operand 8399 states and 11597 transitions. [2022-11-22 02:30:18,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2022-11-22 02:30:18,175 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:30:18,175 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:30:18,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 02:30:18,175 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:30:18,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:30:18,178 INFO L85 PathProgramCache]: Analyzing trace with hash -2013024413, now seen corresponding path program 1 times [2022-11-22 02:30:18,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:30:18,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176615622] [2022-11-22 02:30:18,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:30:18,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:30:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:30:19,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1567 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1564 trivial. 0 not checked. [2022-11-22 02:30:19,735 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:30:19,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176615622] [2022-11-22 02:30:19,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176615622] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:30:19,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:30:19,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:30:19,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440885662] [2022-11-22 02:30:19,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:30:19,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:30:19,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:30:19,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:30:19,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:30:19,739 INFO L87 Difference]: Start difference. First operand 8399 states and 11597 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2022-11-22 02:30:21,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:30:24,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:30:27,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:30:27,925 INFO L93 Difference]: Finished difference Result 19330 states and 26667 transitions. [2022-11-22 02:30:27,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:30:27,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 356 [2022-11-22 02:30:27,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:30:27,975 INFO L225 Difference]: With dead ends: 19330 [2022-11-22 02:30:27,975 INFO L226 Difference]: Without dead ends: 10983 [2022-11-22 02:30:28,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:30:28,005 INFO L413 NwaCegarLoop]: 2194 mSDtfsCounter, 1351 mSDsluCounter, 1018 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1351 SdHoareTripleChecker+Valid, 3212 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:30:28,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1351 Valid, 3212 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 476 Invalid, 2 Unknown, 0 Unchecked, 7.8s Time] [2022-11-22 02:30:28,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10983 states. [2022-11-22 02:30:28,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10983 to 10978. [2022-11-22 02:30:28,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10978 states, 7311 states have (on average 1.3517986595540965) internal successors, (9883), 7364 states have internal predecessors, (9883), 2608 states have call successors, (2608), 1059 states have call predecessors, (2608), 1058 states have return successors, (2607), 2589 states have call predecessors, (2607), 2607 states have call successors, (2607) [2022-11-22 02:30:28,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10978 states to 10978 states and 15098 transitions. [2022-11-22 02:30:28,689 INFO L78 Accepts]: Start accepts. Automaton has 10978 states and 15098 transitions. Word has length 356 [2022-11-22 02:30:28,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:30:28,690 INFO L495 AbstractCegarLoop]: Abstraction has 10978 states and 15098 transitions. [2022-11-22 02:30:28,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2022-11-22 02:30:28,691 INFO L276 IsEmpty]: Start isEmpty. Operand 10978 states and 15098 transitions. [2022-11-22 02:30:28,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2022-11-22 02:30:28,714 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:30:28,714 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:30:28,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 02:30:28,715 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:30:28,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:30:28,716 INFO L85 PathProgramCache]: Analyzing trace with hash 2116498138, now seen corresponding path program 1 times [2022-11-22 02:30:28,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:30:28,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920088450] [2022-11-22 02:30:28,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:30:28,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:30:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:30:35,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1417 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 1405 trivial. 0 not checked. [2022-11-22 02:30:35,948 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:30:35,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920088450] [2022-11-22 02:30:35,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920088450] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:30:35,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973639059] [2022-11-22 02:30:35,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:30:35,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:30:35,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d50c6a-8a5b-4280-a4bd-7b9edaaa8968/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:30:35,955 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d50c6a-8a5b-4280-a4bd-7b9edaaa8968/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:30:35,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d50c6a-8a5b-4280-a4bd-7b9edaaa8968/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:30:39,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:30:39,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 10712 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-22 02:30:39,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:30:39,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1417 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 1123 trivial. 0 not checked. [2022-11-22 02:30:39,986 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:30:39,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973639059] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:30:39,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:30:39,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-11-22 02:30:39,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071254813] [2022-11-22 02:30:39,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:30:39,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:30:39,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:30:39,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:30:39,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-22 02:30:39,989 INFO L87 Difference]: Start difference. First operand 10978 states and 15098 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 3 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-22 02:30:41,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:30:43,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:30:45,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:30:46,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:30:48,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:30:53,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:30:55,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:30:55,175 INFO L93 Difference]: Finished difference Result 20741 states and 28523 transitions. [2022-11-22 02:30:55,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:30:55,176 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 3 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 357 [2022-11-22 02:30:55,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:30:55,221 INFO L225 Difference]: With dead ends: 20741 [2022-11-22 02:30:55,222 INFO L226 Difference]: Without dead ends: 9803 [2022-11-22 02:30:55,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-22 02:30:55,250 INFO L413 NwaCegarLoop]: 1414 mSDtfsCounter, 5 mSDsluCounter, 4231 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 5645 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:30:55,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 5645 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 828 Invalid, 3 Unknown, 0 Unchecked, 14.7s Time] [2022-11-22 02:30:55,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9803 states. [2022-11-22 02:30:55,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9803 to 9800. [2022-11-22 02:30:55,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9800 states, 6527 states have (on average 1.3523824115213727) internal successors, (8827), 6576 states have internal predecessors, (8827), 2327 states have call successors, (2327), 946 states have call predecessors, (2327), 945 states have return successors, (2326), 2309 states have call predecessors, (2326), 2326 states have call successors, (2326) [2022-11-22 02:30:55,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9800 states to 9800 states and 13480 transitions. [2022-11-22 02:30:55,830 INFO L78 Accepts]: Start accepts. Automaton has 9800 states and 13480 transitions. Word has length 357 [2022-11-22 02:30:55,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:30:55,831 INFO L495 AbstractCegarLoop]: Abstraction has 9800 states and 13480 transitions. [2022-11-22 02:30:55,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 3 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-22 02:30:55,831 INFO L276 IsEmpty]: Start isEmpty. Operand 9800 states and 13480 transitions. [2022-11-22 02:30:55,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2022-11-22 02:30:55,844 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:30:55,844 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 8, 8, 8, 8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:30:55,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d50c6a-8a5b-4280-a4bd-7b9edaaa8968/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 02:30:56,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d50c6a-8a5b-4280-a4bd-7b9edaaa8968/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-22 02:30:56,071 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:30:56,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:30:56,071 INFO L85 PathProgramCache]: Analyzing trace with hash 667746261, now seen corresponding path program 1 times [2022-11-22 02:30:56,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:30:56,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218815149] [2022-11-22 02:30:56,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:30:56,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:30:56,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:30:58,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1575 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1569 trivial. 0 not checked. [2022-11-22 02:30:58,811 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:30:58,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218815149] [2022-11-22 02:30:58,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218815149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:30:58,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:30:58,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:30:58,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201129312] [2022-11-22 02:30:58,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:30:58,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:30:58,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:30:58,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:30:58,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:30:58,813 INFO L87 Difference]: Start difference. First operand 9800 states and 13480 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-11-22 02:31:00,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:31:03,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:31:08,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:31:10,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:31:12,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:31:12,793 INFO L93 Difference]: Finished difference Result 22037 states and 30347 transitions. [2022-11-22 02:31:12,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:31:12,794 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 368 [2022-11-22 02:31:12,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:31:12,852 INFO L225 Difference]: With dead ends: 22037 [2022-11-22 02:31:12,852 INFO L226 Difference]: Without dead ends: 12299 [2022-11-22 02:31:12,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:31:12,887 INFO L413 NwaCegarLoop]: 2039 mSDtfsCounter, 1729 mSDsluCounter, 1642 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 21 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1803 SdHoareTripleChecker+Valid, 3681 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:31:12,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1803 Valid, 3681 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1274 Invalid, 2 Unknown, 0 Unchecked, 13.4s Time] [2022-11-22 02:31:12,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12299 states. [2022-11-22 02:31:13,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12299 to 12267. [2022-11-22 02:31:13,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12267 states, 8231 states have (on average 1.3552423763819705) internal successors, (11155), 8291 states have internal predecessors, (11155), 2860 states have call successors, (2860), 1176 states have call predecessors, (2860), 1175 states have return successors, (2859), 2837 states have call predecessors, (2859), 2859 states have call successors, (2859) [2022-11-22 02:31:13,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12267 states to 12267 states and 16874 transitions. [2022-11-22 02:31:13,811 INFO L78 Accepts]: Start accepts. Automaton has 12267 states and 16874 transitions. Word has length 368 [2022-11-22 02:31:13,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:31:13,812 INFO L495 AbstractCegarLoop]: Abstraction has 12267 states and 16874 transitions. [2022-11-22 02:31:13,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-11-22 02:31:13,813 INFO L276 IsEmpty]: Start isEmpty. Operand 12267 states and 16874 transitions. [2022-11-22 02:31:13,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-11-22 02:31:13,832 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:31:13,832 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:31:13,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 02:31:13,833 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:31:13,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:31:13,834 INFO L85 PathProgramCache]: Analyzing trace with hash 275854025, now seen corresponding path program 1 times [2022-11-22 02:31:13,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:31:13,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44481665] [2022-11-22 02:31:13,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:31:13,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:31:14,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:31:19,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1577 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 1565 trivial. 0 not checked. [2022-11-22 02:31:19,851 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:31:19,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44481665] [2022-11-22 02:31:19,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44481665] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:31:19,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393392112] [2022-11-22 02:31:19,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:31:19,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:31:19,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d50c6a-8a5b-4280-a4bd-7b9edaaa8968/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:31:19,860 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d50c6a-8a5b-4280-a4bd-7b9edaaa8968/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:31:19,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d50c6a-8a5b-4280-a4bd-7b9edaaa8968/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 02:31:36,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:31:36,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 10839 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-22 02:31:36,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:31:36,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1577 backedges. 434 proven. 0 refuted. 0 times theorem prover too weak. 1143 trivial. 0 not checked. [2022-11-22 02:31:36,830 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:31:36,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393392112] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:31:36,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:31:36,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2022-11-22 02:31:36,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535162796] [2022-11-22 02:31:36,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:31:36,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:31:36,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:31:36,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:31:36,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:31:36,833 INFO L87 Difference]: Start difference. First operand 12267 states and 16874 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 3 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (37), 4 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-22 02:31:38,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:31:41,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:31:43,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:31:47,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:31:49,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:31:49,876 INFO L93 Difference]: Finished difference Result 24578 states and 33857 transitions. [2022-11-22 02:31:49,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:31:49,877 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 3 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (37), 4 states have call predecessors, (37), 3 states have call successors, (37) Word has length 366 [2022-11-22 02:31:49,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:31:49,942 INFO L225 Difference]: With dead ends: 24578 [2022-11-22 02:31:49,942 INFO L226 Difference]: Without dead ends: 12323 [2022-11-22 02:31:49,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 367 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:31:49,972 INFO L413 NwaCegarLoop]: 1407 mSDtfsCounter, 1 mSDsluCounter, 5604 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 7011 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:31:49,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 7011 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1027 Invalid, 3 Unknown, 0 Unchecked, 12.4s Time] [2022-11-22 02:31:49,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12323 states. [2022-11-22 02:31:50,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12323 to 12311. [2022-11-22 02:31:50,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12311 states, 8253 states have (on average 1.3541742396704228) internal successors, (11176), 8335 states have internal predecessors, (11176), 2860 states have call successors, (2860), 1176 states have call predecessors, (2860), 1197 states have return successors, (2922), 2837 states have call predecessors, (2922), 2859 states have call successors, (2922) [2022-11-22 02:31:50,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12311 states to 12311 states and 16958 transitions. [2022-11-22 02:31:50,671 INFO L78 Accepts]: Start accepts. Automaton has 12311 states and 16958 transitions. Word has length 366 [2022-11-22 02:31:50,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:31:50,672 INFO L495 AbstractCegarLoop]: Abstraction has 12311 states and 16958 transitions. [2022-11-22 02:31:50,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 3 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (37), 4 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-22 02:31:50,673 INFO L276 IsEmpty]: Start isEmpty. Operand 12311 states and 16958 transitions. [2022-11-22 02:31:50,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2022-11-22 02:31:50,685 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:31:50,686 INFO L195 NwaCegarLoop]: trace histogram [19, 17, 17, 17, 17, 17, 17, 17, 17, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:31:50,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d50c6a-8a5b-4280-a4bd-7b9edaaa8968/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 02:31:50,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d50c6a-8a5b-4280-a4bd-7b9edaaa8968/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-22 02:31:50,911 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:31:50,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:31:50,911 INFO L85 PathProgramCache]: Analyzing trace with hash 318253814, now seen corresponding path program 1 times [2022-11-22 02:31:50,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:31:50,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119223647] [2022-11-22 02:31:50,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:31:50,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:31:56,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:31:58,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 1618 trivial. 0 not checked. [2022-11-22 02:31:58,276 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:31:58,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119223647] [2022-11-22 02:31:58,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119223647] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:31:58,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519247738] [2022-11-22 02:31:58,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:31:58,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:31:58,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d50c6a-8a5b-4280-a4bd-7b9edaaa8968/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:31:58,278 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d50c6a-8a5b-4280-a4bd-7b9edaaa8968/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:31:58,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d50c6a-8a5b-4280-a4bd-7b9edaaa8968/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 02:32:04,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:32:04,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 10902 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-22 02:32:04,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:32:04,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 525 proven. 0 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2022-11-22 02:32:04,364 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:32:04,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519247738] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:32:04,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:32:04,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2022-11-22 02:32:04,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125823704] [2022-11-22 02:32:04,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:32:04,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:32:04,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:32:04,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:32:04,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:32:04,367 INFO L87 Difference]: Start difference. First operand 12311 states and 16958 transitions. Second operand has 6 states, 4 states have (on average 26.25) internal successors, (105), 6 states have internal predecessors, (105), 3 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2022-11-22 02:32:06,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:32:08,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:32:13,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:32:15,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:32:15,639 INFO L93 Difference]: Finished difference Result 24618 states and 33956 transitions. [2022-11-22 02:32:15,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:32:15,640 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 26.25) internal successors, (105), 6 states have internal predecessors, (105), 3 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) Word has length 380 [2022-11-22 02:32:15,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:32:15,700 INFO L225 Difference]: With dead ends: 24618 [2022-11-22 02:32:15,701 INFO L226 Difference]: Without dead ends: 12328 [2022-11-22 02:32:15,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-22 02:32:15,734 INFO L413 NwaCegarLoop]: 1396 mSDtfsCounter, 3 mSDsluCounter, 5558 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 10 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 6954 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:32:15,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 6954 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1077 Invalid, 3 Unknown, 0 Unchecked, 10.8s Time] [2022-11-22 02:32:15,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12328 states. [2022-11-22 02:32:16,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12328 to 12328. [2022-11-22 02:32:16,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12328 states, 8270 states have (on average 1.3534461910519953) internal successors, (11193), 8352 states have internal predecessors, (11193), 2860 states have call successors, (2860), 1176 states have call predecessors, (2860), 1197 states have return successors, (2922), 2837 states have call predecessors, (2922), 2859 states have call successors, (2922) [2022-11-22 02:32:16,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12328 states to 12328 states and 16975 transitions. [2022-11-22 02:32:16,344 INFO L78 Accepts]: Start accepts. Automaton has 12328 states and 16975 transitions. Word has length 380 [2022-11-22 02:32:16,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:32:16,345 INFO L495 AbstractCegarLoop]: Abstraction has 12328 states and 16975 transitions. [2022-11-22 02:32:16,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 26.25) internal successors, (105), 6 states have internal predecessors, (105), 3 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2022-11-22 02:32:16,346 INFO L276 IsEmpty]: Start isEmpty. Operand 12328 states and 16975 transitions. [2022-11-22 02:32:16,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2022-11-22 02:32:16,359 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:32:16,360 INFO L195 NwaCegarLoop]: trace histogram [19, 17, 17, 17, 17, 17, 17, 17, 17, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:32:16,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d50c6a-8a5b-4280-a4bd-7b9edaaa8968/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 02:32:16,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d50c6a-8a5b-4280-a4bd-7b9edaaa8968/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:32:16,575 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:32:16,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:32:16,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1058394430, now seen corresponding path program 1 times [2022-11-22 02:32:16,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:32:16,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186560649] [2022-11-22 02:32:16,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:32:16,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:32:20,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:32:23,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1745 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 1688 trivial. 0 not checked. [2022-11-22 02:32:23,344 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:32:23,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186560649] [2022-11-22 02:32:23,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186560649] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:32:23,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746163550] [2022-11-22 02:32:23,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:32:23,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:32:23,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d50c6a-8a5b-4280-a4bd-7b9edaaa8968/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:32:23,346 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d50c6a-8a5b-4280-a4bd-7b9edaaa8968/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:32:23,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d50c6a-8a5b-4280-a4bd-7b9edaaa8968/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 02:32:27,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:32:27,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 11022 conjuncts, 226 conjunts are in the unsatisfiable core [2022-11-22 02:32:27,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:32:28,621 INFO L321 Elim1Store]: treesize reduction 530, result has 14.9 percent of original size [2022-11-22 02:32:28,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 16 case distinctions, treesize of input 4185955 treesize of output 4152071 [2022-11-22 02:32:45,956 WARN L233 SmtUtils]: Spent 17.33s on a formula simplification that was a NOOP. DAG size: 1556 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-22 02:35:18,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 02:35:18,460 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_init_zalloc_#t~malloc32.base| Int)) (and (< |ldv_init_zalloc_#t~malloc32.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_31953 Int)) (= |c_#valid| (store |c_old(#valid)| |ldv_init_zalloc_#t~malloc32.base| v_ArrVal_31953))))) is different from true [2022-11-22 02:35:18,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:35:18,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:35:18,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:35:18,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-22 02:35:18,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 02:35:18,725 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_init_zalloc_#t~malloc32.base| Int)) (= |c_#valid| (store |c_old(#valid)| |ldv_init_zalloc_#t~malloc32.base| 1))) is different from true [2022-11-22 02:35:18,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:35:18,783 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|ldv_init_zalloc_#t~malloc32.base| Int)) (= (select |c_#valid| |ldv_init_zalloc_#t~malloc32.base|) 1)) (exists ((|ldv_init_zalloc_#t~malloc32.base| Int)) (= |c_#valid| (store |c_old(#valid)| |ldv_init_zalloc_#t~malloc32.base| 1)))) is different from true [2022-11-22 02:35:18,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:35:18,924 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-22 02:35:18,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-22 02:35:19,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 02:35:19,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:35:19,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:35:19,275 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-22 02:35:19,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-22 02:35:19,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 02:35:19,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:35:19,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:35:19,645 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-22 02:35:19,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-22 02:35:19,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 02:35:19,777 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_init_zalloc_#t~malloc32.base| Int)) (and (< |ldv_init_zalloc_#t~malloc32.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_31957 Int)) (= |c_#valid| (store |c_old(#valid)| |ldv_init_zalloc_#t~malloc32.base| v_ArrVal_31957))))) is different from true [2022-11-22 02:35:19,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:35:19,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:35:19,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:35:19,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-22 02:35:20,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 02:35:20,036 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_init_zalloc_#t~malloc32.base| Int)) (and (exists ((v_ArrVal_31958 Int)) (= |c_#valid| (store |c_old(#valid)| |ldv_init_zalloc_#t~malloc32.base| v_ArrVal_31958))) (< |ldv_init_zalloc_#t~malloc32.base| |c_#StackHeapBarrier|))) is different from true [2022-11-22 02:35:20,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:35:20,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:35:20,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:35:20,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-22 02:35:20,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 02:35:20,290 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_init_zalloc_#t~malloc32.base| Int)) (and (< |ldv_init_zalloc_#t~malloc32.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_31959 Int)) (= |c_#valid| (store |c_old(#valid)| |ldv_init_zalloc_#t~malloc32.base| v_ArrVal_31959))))) is different from true [2022-11-22 02:35:20,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:35:20,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:35:20,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:35:20,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-22 02:35:20,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 02:35:20,543 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_init_zalloc_#t~malloc32.base| Int)) (and (< |ldv_init_zalloc_#t~malloc32.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_31960 Int)) (= |c_#valid| (store |c_old(#valid)| |ldv_init_zalloc_#t~malloc32.base| v_ArrVal_31960))))) is different from true [2022-11-22 02:35:20,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:35:20,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:35:20,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:35:20,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-22 02:35:20,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 02:35:20,802 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_init_zalloc_#t~malloc32.base| Int)) (and (exists ((v_ArrVal_31961 Int)) (= |c_#valid| (store |c_old(#valid)| |ldv_init_zalloc_#t~malloc32.base| v_ArrVal_31961))) (< |ldv_init_zalloc_#t~malloc32.base| |c_#StackHeapBarrier|))) is different from true [2022-11-22 02:35:20,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:35:20,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:35:20,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:35:20,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-22 02:35:21,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 02:35:21,041 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_init_zalloc_#t~malloc32.base| Int)) (and (< |ldv_init_zalloc_#t~malloc32.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_31962 Int)) (= |c_#valid| (store |c_old(#valid)| |ldv_init_zalloc_#t~malloc32.base| v_ArrVal_31962))))) is different from true [2022-11-22 02:35:21,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:35:21,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:35:21,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:35:21,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-22 02:35:21,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 02:35:21,286 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_init_zalloc_#t~malloc32.base| Int)) (and (exists ((v_ArrVal_31963 Int)) (= |c_#valid| (store |c_old(#valid)| |ldv_init_zalloc_#t~malloc32.base| v_ArrVal_31963))) (< |ldv_init_zalloc_#t~malloc32.base| |c_#StackHeapBarrier|))) is different from true [2022-11-22 02:35:21,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:35:21,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:35:21,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:35:21,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-22 02:35:21,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 02:35:21,509 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_init_zalloc_#t~malloc32.base| Int)) (and (< |ldv_init_zalloc_#t~malloc32.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_31964 Int)) (= |c_#valid| (store |c_old(#valid)| |ldv_init_zalloc_#t~malloc32.base| v_ArrVal_31964))))) is different from true [2022-11-22 02:35:21,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:35:21,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:35:21,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:35:21,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-22 02:35:21,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 02:35:21,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:35:21,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:35:21,851 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-22 02:35:21,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-22 02:35:22,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 02:35:22,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:35:22,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:35:22,193 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-22 02:35:22,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-22 02:35:23,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 02:35:23,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-22 02:35:24,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-22 02:35:24,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-22 02:35:25,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-22 02:35:25,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-22 02:35:25,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-22 02:35:25,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-22 02:35:26,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-22 02:35:26,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 02:35:26,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:35:27,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:35:27,249 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:35:27,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:35:27,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-22 02:35:28,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:35:28,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-22 02:35:28,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-22 02:35:28,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 02:35:28,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:35:28,748 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_31978 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.meminit_#ptr.base| v_ArrVal_31978))) is different from true [2022-11-22 02:35:28,769 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_init_zalloc_#t~malloc32.base| Int)) (and (exists ((v_ArrVal_31978 (Array Int Int)) (|v_#Ultimate.meminit_#ptr.base_AFTER_CALL_65| Int)) (and (= |c_#memory_int| (store |c_old(#memory_int)| |v_#Ultimate.meminit_#ptr.base_AFTER_CALL_65| v_ArrVal_31978)) (<= |v_#Ultimate.meminit_#ptr.base_AFTER_CALL_65| |ldv_init_zalloc_#t~malloc32.base|))) (< |ldv_init_zalloc_#t~malloc32.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_31977 Int)) (= |c_#valid| (store |c_old(#valid)| |ldv_init_zalloc_#t~malloc32.base| v_ArrVal_31977))))) is different from true [2022-11-22 02:35:28,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:35:28,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:35:28,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:35:28,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-22 02:35:28,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:35:28,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-22 02:35:29,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 02:35:29,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 02:35:29,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-22 02:35:29,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:35:29,465 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_31980 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.meminit_#ptr.base| v_ArrVal_31980) |c_#memory_int|)) is different from true [2022-11-22 02:35:29,491 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_init_zalloc_#t~malloc32.base| Int)) (and (< |ldv_init_zalloc_#t~malloc32.base| |c_#StackHeapBarrier|) (exists ((|v_#Ultimate.meminit_#ptr.base_AFTER_CALL_66| Int) (v_ArrVal_31980 (Array Int Int))) (and (<= |v_#Ultimate.meminit_#ptr.base_AFTER_CALL_66| |ldv_init_zalloc_#t~malloc32.base|) (= (store |c_old(#memory_int)| |v_#Ultimate.meminit_#ptr.base_AFTER_CALL_66| v_ArrVal_31980) |c_#memory_int|))) (exists ((v_ArrVal_31977 Int)) (= |c_#valid| (store |c_old(#valid)| |ldv_init_zalloc_#t~malloc32.base| v_ArrVal_31977))))) is different from true [2022-11-22 02:35:29,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:35:29,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:35:29,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:35:29,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-22 02:35:29,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:35:29,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-22 02:35:29,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 02:35:29,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-22 02:35:29,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:35:29,765 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_31982 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.meminit_#ptr.base| v_ArrVal_31982) |c_#memory_int|)) is different from true [2022-11-22 02:35:29,787 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_init_zalloc_#t~malloc32.base| Int)) (and (< |ldv_init_zalloc_#t~malloc32.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_31977 Int)) (= |c_#valid| (store |c_old(#valid)| |ldv_init_zalloc_#t~malloc32.base| v_ArrVal_31977))) (exists ((|v_#Ultimate.meminit_#ptr.base_AFTER_CALL_67| Int) (v_ArrVal_31982 (Array Int Int))) (and (<= |v_#Ultimate.meminit_#ptr.base_AFTER_CALL_67| |ldv_init_zalloc_#t~malloc32.base|) (= (store |c_old(#memory_int)| |v_#Ultimate.meminit_#ptr.base_AFTER_CALL_67| v_ArrVal_31982) |c_#memory_int|))))) is different from true [2022-11-22 02:35:29,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:35:29,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:35:29,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:35:29,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-22 02:35:29,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:35:29,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-22 02:35:30,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:35:30,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-22 02:35:30,312 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 02:35:30,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-22 02:35:30,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 02:35:30,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1745 backedges. 374 proven. 230 refuted. 6 times theorem prover too weak. 490 trivial. 645 not checked. [2022-11-22 02:35:30,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:35:31,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746163550] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:35:31,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [738828003] [2022-11-22 02:35:31,629 INFO L159 IcfgInterpreter]: Started Sifa with 146 locations of interest [2022-11-22 02:35:31,629 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:35:31,633 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:35:31,639 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:35:31,640 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:35:59,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5151 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 309 treesize of output 511 [2022-11-22 02:36:01,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5151 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 309 treesize of output 511 [2022-11-22 02:36:03,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5151 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 309 treesize of output 511 [2022-11-22 02:36:06,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5151 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 309 treesize of output 511 [2022-11-22 02:36:07,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5151 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 309 treesize of output 511 [2022-11-22 02:36:10,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:36:12,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:36:13,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:36:13,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:36:13,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:36:13,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:36:13,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:36:13,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:36:19,336 INFO L217 Elim1Store]: Index analysis took 9041 ms