./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 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4005c4bf-b311-4d4a-bbb7-bea7e42df9e5/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4005c4bf-b311-4d4a-bbb7-bea7e42df9e5/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4005c4bf-b311-4d4a-bbb7-bea7e42df9e5/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4005c4bf-b311-4d4a-bbb7-bea7e42df9e5/bin/utaipan-TEXQjIfE4P/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_4005c4bf-b311-4d4a-bbb7-bea7e42df9e5/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4005c4bf-b311-4d4a-bbb7-bea7e42df9e5/bin/utaipan-TEXQjIfE4P --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 --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:26:13,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:26:13,115 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:26:13,175 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:26:13,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:26:13,180 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:26:13,181 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:26:13,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:26:13,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:26:13,194 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:26:13,196 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:26:13,198 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:26:13,198 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:26:13,201 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:26:13,203 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:26:13,212 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:26:13,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:26:13,215 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:26:13,218 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:26:13,226 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:26:13,228 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:26:13,230 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:26:13,233 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:26:13,235 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:26:13,245 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:26:13,245 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:26:13,246 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:26:13,248 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:26:13,249 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:26:13,250 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:26:13,251 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:26:13,252 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:26:13,255 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:26:13,256 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:26:13,258 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:26:13,258 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:26:13,259 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:26:13,260 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:26:13,260 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:26:13,261 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:26:13,262 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:26:13,263 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4005c4bf-b311-4d4a-bbb7-bea7e42df9e5/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 01:26:13,309 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:26:13,310 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:26:13,310 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:26:13,311 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:26:13,312 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:26:13,312 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:26:13,312 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:26:13,313 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:26:13,313 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:26:13,314 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:26:13,315 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:26:13,315 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:26:13,315 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:26:13,316 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:26:13,316 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:26:13,316 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:26:13,317 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:26:13,317 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:26:13,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:26:13,318 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:26:13,318 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:26:13,319 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:26:13,319 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:26:13,319 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:26:13,320 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:26:13,320 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:26:13,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:26:13,321 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:26:13,321 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:26:13,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:26:13,322 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:26:13,322 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:26:13,323 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:26:13,323 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:26:13,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:26:13,323 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:26:13,324 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:26:13,324 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:26:13,324 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_4005c4bf-b311-4d4a-bbb7-bea7e42df9e5/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4005c4bf-b311-4d4a-bbb7-bea7e42df9e5/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 234112184b071eb42f340136dfce6e1a552d788d086baea007a05a3140f2d157 [2021-11-21 01:26:13,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:26:13,616 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:26:13,619 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:26:13,620 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:26:13,621 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:26:13,622 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4005c4bf-b311-4d4a-bbb7-bea7e42df9e5/bin/utaipan-TEXQjIfE4P/../../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 [2021-11-21 01:26:13,700 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4005c4bf-b311-4d4a-bbb7-bea7e42df9e5/bin/utaipan-TEXQjIfE4P/data/ca9758020/c0ecb03018d3478cac0b9d71185283d5/FLAGfecabfe28 [2021-11-21 01:26:14,654 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:26:14,655 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4005c4bf-b311-4d4a-bbb7-bea7e42df9e5/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 [2021-11-21 01:26:14,706 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4005c4bf-b311-4d4a-bbb7-bea7e42df9e5/bin/utaipan-TEXQjIfE4P/data/ca9758020/c0ecb03018d3478cac0b9d71185283d5/FLAGfecabfe28 [2021-11-21 01:26:15,054 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4005c4bf-b311-4d4a-bbb7-bea7e42df9e5/bin/utaipan-TEXQjIfE4P/data/ca9758020/c0ecb03018d3478cac0b9d71185283d5 [2021-11-21 01:26:15,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:26:15,058 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:26:15,062 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:26:15,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:26:15,066 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:26:15,067 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:26:15" (1/1) ... [2021-11-21 01:26:15,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@764d4b22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:26:15, skipping insertion in model container [2021-11-21 01:26:15,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:26:15" (1/1) ... [2021-11-21 01:26:15,077 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:26:15,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:26:17,143 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4005c4bf-b311-4d4a-bbb7-bea7e42df9e5/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] [2021-11-21 01:26:17,188 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:26:17,270 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:26:17,728 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4005c4bf-b311-4d4a-bbb7-bea7e42df9e5/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] [2021-11-21 01:26:17,739 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:26:17,970 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:26:17,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:26:17 WrapperNode [2021-11-21 01:26:17,971 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:26:17,972 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:26:17,973 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:26:17,973 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:26:17,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:26:17" (1/1) ... [2021-11-21 01:26:18,112 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:26:17" (1/1) ... [2021-11-21 01:26:18,404 INFO L137 Inliner]: procedures = 286, calls = 3678, calls flagged for inlining = 140, calls inlined = 119, statements flattened = 7836 [2021-11-21 01:26:18,470 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:26:18,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:26:18,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:26:18,470 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:26:18,486 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:26:17" (1/1) ... [2021-11-21 01:26:18,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:26:17" (1/1) ... [2021-11-21 01:26:18,555 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:26:17" (1/1) ... [2021-11-21 01:26:18,555 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:26:17" (1/1) ... [2021-11-21 01:26:18,796 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:26:17" (1/1) ... [2021-11-21 01:26:18,829 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:26:17" (1/1) ... [2021-11-21 01:26:18,864 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:26:17" (1/1) ... [2021-11-21 01:26:18,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:26:18,928 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:26:18,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:26:18,929 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:26:18,930 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:26:17" (1/1) ... [2021-11-21 01:26:18,938 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:26:18,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4005c4bf-b311-4d4a-bbb7-bea7e42df9e5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:26:18,969 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4005c4bf-b311-4d4a-bbb7-bea7e42df9e5/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:26:19,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4005c4bf-b311-4d4a-bbb7-bea7e42df9e5/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:26:19,017 INFO L130 BoogieDeclarations]: Found specification of procedure acm_disconnect [2021-11-21 01:26:19,017 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_disconnect [2021-11-21 01:26:19,018 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_hangup [2021-11-21 01:26:19,018 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_hangup [2021-11-21 01:26:19,018 INFO L130 BoogieDeclarations]: Found specification of procedure __cmpxchg_wrong_size [2021-11-21 01:26:19,018 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2021-11-21 01:26:19,018 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2021-11-21 01:26:19,018 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-21 01:26:19,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 01:26:19,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 01:26:19,019 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 01:26:19,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 01:26:19,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 01:26:19,019 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 01:26:19,019 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2021-11-21 01:26:19,020 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2021-11-21 01:26:19,020 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_cleanup [2021-11-21 01:26:19,020 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_cleanup [2021-11-21 01:26:19,020 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-21 01:26:19,020 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-21 01:26:19,020 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-21 01:26:19,021 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-21 01:26:19,021 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-11-21 01:26:19,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-11-21 01:26:19,021 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 01:26:19,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 01:26:19,021 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2021-11-21 01:26:19,022 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2021-11-21 01:26:19,022 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_get_interface [2021-11-21 01:26:19,022 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_get_interface [2021-11-21 01:26:19,022 INFO L130 BoogieDeclarations]: Found specification of procedure acm_write_buffers_free [2021-11-21 01:26:19,022 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_write_buffers_free [2021-11-21 01:26:19,022 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-21 01:26:19,022 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-21 01:26:19,023 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2021-11-21 01:26:19,023 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2021-11-21 01:26:19,023 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-21 01:26:19,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-21 01:26:19,023 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2021-11-21 01:26:19,023 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2021-11-21 01:26:19,024 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2021-11-21 01:26:19,024 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2021-11-21 01:26:19,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 01:26:19,024 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 01:26:19,024 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-21 01:26:19,024 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-21 01:26:19,024 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-21 01:26:19,025 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-21 01:26:19,025 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_put [2021-11-21 01:26:19,026 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_put [2021-11-21 01:26:19,027 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_chars_in_buffer [2021-11-21 01:26:19,027 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_chars_in_buffer [2021-11-21 01:26:19,027 INFO L130 BoogieDeclarations]: Found specification of procedure acm_resume [2021-11-21 01:26:19,027 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_resume [2021-11-21 01:26:19,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:26:19,028 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-21 01:26:19,028 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-21 01:26:19,028 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-21 01:26:19,028 INFO L130 BoogieDeclarations]: Found specification of procedure acm_ctrl_msg [2021-11-21 01:26:19,029 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_ctrl_msg [2021-11-21 01:26:19,029 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2021-11-21 01:26:19,029 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2021-11-21 01:26:19,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:26:19,030 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_hangup [2021-11-21 01:26:19,030 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_hangup [2021-11-21 01:26:19,030 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ifnum_to_if [2021-11-21 01:26:19,030 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ifnum_to_if [2021-11-21 01:26:19,030 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-11-21 01:26:19,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-11-21 01:26:19,031 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 01:26:19,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 01:26:19,031 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-21 01:26:19,031 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-21 01:26:19,032 INFO L130 BoogieDeclarations]: Found specification of procedure acm_softint [2021-11-21 01:26:19,032 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_softint [2021-11-21 01:26:19,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:26:19,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:26:19,033 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2021-11-21 01:26:19,033 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2021-11-21 01:26:19,033 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2021-11-21 01:26:19,033 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2021-11-21 01:26:19,033 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-21 01:26:19,033 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-21 01:26:19,034 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-21 01:26:19,034 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-21 01:26:19,034 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_tiocmget [2021-11-21 01:26:19,035 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_tiocmget [2021-11-21 01:26:19,035 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-11-21 01:26:19,035 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-11-21 01:26:19,036 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_set_termios [2021-11-21 01:26:19,036 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_set_termios [2021-11-21 01:26:19,036 INFO L130 BoogieDeclarations]: Found specification of procedure usb_clear_halt [2021-11-21 01:26:19,037 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_clear_halt [2021-11-21 01:26:19,037 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_from_anchor [2021-11-21 01:26:19,037 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_from_anchor [2021-11-21 01:26:19,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 01:26:19,038 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_break_ctl [2021-11-21 01:26:19,038 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_break_ctl [2021-11-21 01:26:19,038 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-21 01:26:19,038 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-21 01:26:19,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 01:26:19,039 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface [2021-11-21 01:26:19,039 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface [2021-11-21 01:26:19,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:26:19,039 INFO L130 BoogieDeclarations]: Found specification of procedure acm_start_wb [2021-11-21 01:26:19,040 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_start_wb [2021-11-21 01:26:19,040 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2021-11-21 01:26:19,040 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2021-11-21 01:26:19,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 01:26:19,040 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 01:26:19,041 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-21 01:26:19,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-21 01:26:19,044 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_throttle [2021-11-21 01:26:19,044 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_throttle [2021-11-21 01:26:19,044 INFO L130 BoogieDeclarations]: Found specification of procedure acm_wb_is_avail [2021-11-21 01:26:19,045 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_wb_is_avail [2021-11-21 01:26:19,045 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-21 01:26:19,047 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-21 01:26:19,047 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-11-21 01:26:19,047 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-11-21 01:26:19,047 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-21 01:26:19,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-21 01:26:19,054 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_write_room [2021-11-21 01:26:19,054 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_write_room [2021-11-21 01:26:19,055 INFO L130 BoogieDeclarations]: Found specification of procedure acm_submit_read_urb [2021-11-21 01:26:19,055 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_submit_read_urb [2021-11-21 01:26:19,055 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2021-11-21 01:26:19,055 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2021-11-21 01:26:19,055 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 01:26:19,055 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 01:26:19,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:26:19,056 INFO L130 BoogieDeclarations]: Found specification of procedure acm_set_control [2021-11-21 01:26:19,056 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_set_control [2021-11-21 01:26:19,056 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-21 01:26:19,056 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-21 01:26:19,056 INFO L130 BoogieDeclarations]: Found specification of procedure acm_write_done [2021-11-21 01:26:19,056 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_write_done [2021-11-21 01:26:19,056 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_ioctl [2021-11-21 01:26:19,056 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_ioctl [2021-11-21 01:26:19,057 INFO L130 BoogieDeclarations]: Found specification of procedure acm_release_minor [2021-11-21 01:26:19,057 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_release_minor [2021-11-21 01:26:19,057 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-11-21 01:26:19,057 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-11-21 01:26:19,057 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 01:26:19,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 01:26:19,057 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2021-11-21 01:26:19,058 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2021-11-21 01:26:19,058 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface_async [2021-11-21 01:26:19,058 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface_async [2021-11-21 01:26:19,058 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_unthrottle [2021-11-21 01:26:19,058 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_unthrottle [2021-11-21 01:26:19,058 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-21 01:26:19,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-21 01:26:19,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:26:19,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-21 01:26:19,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-21 01:26:19,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:26:19,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:26:19,059 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-21 01:26:19,059 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-11-21 01:26:19,059 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-11-21 01:26:19,060 INFO L130 BoogieDeclarations]: Found specification of procedure acm_port_dtr_rts [2021-11-21 01:26:19,060 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_port_dtr_rts [2021-11-21 01:26:19,060 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-21 01:26:19,060 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-21 01:26:19,060 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-11-21 01:26:19,060 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-11-21 01:26:19,060 INFO L130 BoogieDeclarations]: Found specification of procedure acm_read_buffers_free [2021-11-21 01:26:19,061 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_read_buffers_free [2021-11-21 01:26:19,061 INFO L130 BoogieDeclarations]: Found specification of procedure acm_submit_read_urbs [2021-11-21 01:26:19,061 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_submit_read_urbs [2021-11-21 01:26:19,061 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_install [2021-11-21 01:26:19,061 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_install [2021-11-21 01:26:19,061 INFO L130 BoogieDeclarations]: Found specification of procedure stop_data_traffic [2021-11-21 01:26:19,061 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_data_traffic [2021-11-21 01:26:19,061 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-21 01:26:19,062 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-21 01:26:19,062 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-21 01:26:19,062 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-21 01:26:19,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:26:19,062 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2021-11-21 01:26:19,062 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2021-11-21 01:26:19,063 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2021-11-21 01:26:19,063 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2021-11-21 01:26:19,063 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_tiocmset [2021-11-21 01:26:19,096 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_tiocmset [2021-11-21 01:26:19,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:26:19,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:26:19,096 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2021-11-21 01:26:19,096 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2021-11-21 01:26:19,096 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-21 01:26:19,096 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-21 01:26:19,870 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:26:19,875 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:26:20,095 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 01:26:34,813 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:26:36,015 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:26:36,015 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 01:26:36,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:26:36 BoogieIcfgContainer [2021-11-21 01:26:36,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:26:36,024 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:26:36,024 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:26:36,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:26:36,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:26:15" (1/3) ... [2021-11-21 01:26:36,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e5d827d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:26:36, skipping insertion in model container [2021-11-21 01:26:36,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:26:17" (2/3) ... [2021-11-21 01:26:36,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e5d827d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:26:36, skipping insertion in model container [2021-11-21 01:26:36,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:26:36" (3/3) ... [2021-11-21 01:26:36,031 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2021-11-21 01:26:36,037 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:26:36,038 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:26:36,114 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:26:36,125 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:26:36,125 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:26:36,194 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) [2021-11-21 01:26:36,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2021-11-21 01:26:36,240 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:26:36,241 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 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] [2021-11-21 01:26:36,242 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:26:36,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:26:36,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1543876468, now seen corresponding path program 1 times [2021-11-21 01:26:36,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:26:36,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909414315] [2021-11-21 01:26:36,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:26:36,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:26:37,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:26:37,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1110 trivial. 0 not checked. [2021-11-21 01:26:37,821 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:26:37,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909414315] [2021-11-21 01:26:37,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909414315] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:26:37,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:26:37,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:26:37,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79942447] [2021-11-21 01:26:37,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:26:37,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:26:37,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:26:37,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:26:37,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:26:37,885 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 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-21 01:26:40,052 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:26:42,557 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:26:44,764 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:26:46,775 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:26:47,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:26:47,611 INFO L93 Difference]: Finished difference Result 2892 states and 4177 transitions. [2021-11-21 01:26:47,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:26:47,613 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, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 282 [2021-11-21 01:26:47,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:26:47,654 INFO L225 Difference]: With dead ends: 2892 [2021-11-21 01:26:47,654 INFO L226 Difference]: Without dead ends: 1759 [2021-11-21 01:26:47,673 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:26:47,679 INFO L933 BasicCegarLoop]: 1607 mSDtfsCounter, 904 mSDsluCounter, 1622 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 3026 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:26:47,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [904 Valid, 3026 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 441 Invalid, 3 Unknown, 0 Unchecked, 9.5s Time] [2021-11-21 01:26:47,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1759 states. [2021-11-21 01:26:47,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1759 to 1756. [2021-11-21 01:26:47,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1756 states, 1128 states have (on average 1.3537234042553192) internal successors, (1527), 1135 states have internal predecessors, (1527), 489 states have call successors, (489), 139 states have call predecessors, (489), 138 states have return successors, (488), 488 states have call predecessors, (488), 488 states have call successors, (488) [2021-11-21 01:26:47,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1756 states to 1756 states and 2504 transitions. [2021-11-21 01:26:47,930 INFO L78 Accepts]: Start accepts. Automaton has 1756 states and 2504 transitions. Word has length 282 [2021-11-21 01:26:47,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:26:47,932 INFO L470 AbstractCegarLoop]: Abstraction has 1756 states and 2504 transitions. [2021-11-21 01:26:47,932 INFO L471 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, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-21 01:26:47,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1756 states and 2504 transitions. [2021-11-21 01:26:47,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2021-11-21 01:26:47,943 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:26:47,943 INFO L514 BasicCegarLoop]: 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] [2021-11-21 01:26:47,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:26:47,944 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:26:47,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:26:47,945 INFO L85 PathProgramCache]: Analyzing trace with hash 926679960, now seen corresponding path program 1 times [2021-11-21 01:26:47,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:26:47,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045506355] [2021-11-21 01:26:47,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:26:47,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:26:48,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:26:48,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1106 trivial. 0 not checked. [2021-11-21 01:26:48,832 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:26:48,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045506355] [2021-11-21 01:26:48,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045506355] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:26:48,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:26:48,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:26:48,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929512970] [2021-11-21 01:26:48,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:26:48,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:26:48,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:26:48,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:26:48,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:26:48,838 INFO L87 Difference]: Start difference. First operand 1756 states and 2504 transitions. 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) [2021-11-21 01:26:50,963 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:26:53,275 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:26:55,886 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:26:58,463 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:26:59,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:26:59,493 INFO L93 Difference]: Finished difference Result 4793 states and 6808 transitions. [2021-11-21 01:26:59,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:26:59,494 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 [2021-11-21 01:26:59,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:26:59,519 INFO L225 Difference]: With dead ends: 4793 [2021-11-21 01:26:59,519 INFO L226 Difference]: Without dead ends: 3086 [2021-11-21 01:26:59,527 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:26:59,528 INFO L933 BasicCegarLoop]: 1893 mSDtfsCounter, 1133 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1133 SdHoareTripleChecker+Valid, 3292 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:26:59,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1133 Valid, 3292 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 505 Invalid, 3 Unknown, 0 Unchecked, 10.5s Time] [2021-11-21 01:26:59,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3086 states. [2021-11-21 01:26:59,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3086 to 3073. [2021-11-21 01:26:59,667 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) [2021-11-21 01:26:59,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3073 states to 3073 states and 4359 transitions. [2021-11-21 01:26:59,688 INFO L78 Accepts]: Start accepts. Automaton has 3073 states and 4359 transitions. Word has length 274 [2021-11-21 01:26:59,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:26:59,689 INFO L470 AbstractCegarLoop]: Abstraction has 3073 states and 4359 transitions. [2021-11-21 01:26:59,689 INFO L471 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) [2021-11-21 01:26:59,690 INFO L276 IsEmpty]: Start isEmpty. Operand 3073 states and 4359 transitions. [2021-11-21 01:26:59,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2021-11-21 01:26:59,695 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:26:59,697 INFO L514 BasicCegarLoop]: 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] [2021-11-21 01:26:59,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:26:59,697 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:26:59,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:26:59,698 INFO L85 PathProgramCache]: Analyzing trace with hash 535553693, now seen corresponding path program 1 times [2021-11-21 01:26:59,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:26:59,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232471125] [2021-11-21 01:26:59,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:26:59,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:27:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:27:00,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1106 trivial. 0 not checked. [2021-11-21 01:27:00,312 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:27:00,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232471125] [2021-11-21 01:27:00,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232471125] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:27:00,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:27:00,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:27:00,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316080034] [2021-11-21 01:27:00,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:27:00,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:27:00,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:27:00,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:27:00,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:27:00,315 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) [2021-11-21 01:27:02,432 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:27:04,531 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:27:09,009 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:27:09,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:27:09,970 INFO L93 Difference]: Finished difference Result 7639 states and 10803 transitions. [2021-11-21 01:27:09,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:27:09,971 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 [2021-11-21 01:27:09,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:27:10,011 INFO L225 Difference]: With dead ends: 7639 [2021-11-21 01:27:10,012 INFO L226 Difference]: Without dead ends: 4615 [2021-11-21 01:27:10,026 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:27:10,030 INFO L933 BasicCegarLoop]: 1902 mSDtfsCounter, 1042 mSDsluCounter, 1538 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1042 SdHoareTripleChecker+Valid, 3236 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:27:10,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1042 Valid, 3236 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 565 Invalid, 3 Unknown, 0 Unchecked, 9.4s Time] [2021-11-21 01:27:10,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4615 states. [2021-11-21 01:27:10,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4615 to 4612. [2021-11-21 01:27:10,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4612 states, 3018 states have (on average 1.363817097415507) internal successors, (4116), 3038 states have internal predecessors, (4116), 1197 states have call successors, (1197), 397 states have call predecessors, (1197), 396 states have return successors, (1196), 1194 states have call predecessors, (1196), 1196 states have call successors, (1196) [2021-11-21 01:27:10,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4612 states to 4612 states and 6509 transitions. [2021-11-21 01:27:10,291 INFO L78 Accepts]: Start accepts. Automaton has 4612 states and 6509 transitions. Word has length 274 [2021-11-21 01:27:10,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:27:10,294 INFO L470 AbstractCegarLoop]: Abstraction has 4612 states and 6509 transitions. [2021-11-21 01:27:10,294 INFO L471 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) [2021-11-21 01:27:10,294 INFO L276 IsEmpty]: Start isEmpty. Operand 4612 states and 6509 transitions. [2021-11-21 01:27:10,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2021-11-21 01:27:10,308 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:27:10,308 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 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] [2021-11-21 01:27:10,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:27:10,309 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:27:10,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:27:10,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1620816678, now seen corresponding path program 1 times [2021-11-21 01:27:10,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:27:10,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107982392] [2021-11-21 01:27:10,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:27:10,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:27:10,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:27:11,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1109 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1106 trivial. 0 not checked. [2021-11-21 01:27:11,112 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:27:11,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107982392] [2021-11-21 01:27:11,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107982392] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:27:11,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:27:11,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:27:11,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502303331] [2021-11-21 01:27:11,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:27:11,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:27:11,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:27:11,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:27:11,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:27:11,116 INFO L87 Difference]: Start difference. First operand 4612 states and 6509 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-21 01:27:13,242 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:27:15,321 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:27:18,110 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:27:19,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:27:19,215 INFO L93 Difference]: Finished difference Result 13333 states and 18796 transitions. [2021-11-21 01:27:19,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:27:19,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 311 [2021-11-21 01:27:19,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:27:19,281 INFO L225 Difference]: With dead ends: 13333 [2021-11-21 01:27:19,282 INFO L226 Difference]: Without dead ends: 8770 [2021-11-21 01:27:19,302 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:27:19,303 INFO L933 BasicCegarLoop]: 1762 mSDtfsCounter, 1285 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1285 SdHoareTripleChecker+Valid, 3167 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:27:19,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1285 Valid, 3167 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 427 Invalid, 3 Unknown, 0 Unchecked, 7.8s Time] [2021-11-21 01:27:19,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8770 states. [2021-11-21 01:27:19,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8770 to 7923. [2021-11-21 01:27:19,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7923 states, 5199 states have (on average 1.3689170994422004) internal successors, (7117), 5240 states have internal predecessors, (7117), 2037 states have call successors, (2037), 687 states have call predecessors, (2037), 686 states have return successors, (2036), 2025 states have call predecessors, (2036), 2036 states have call successors, (2036) [2021-11-21 01:27:19,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7923 states to 7923 states and 11190 transitions. [2021-11-21 01:27:19,724 INFO L78 Accepts]: Start accepts. Automaton has 7923 states and 11190 transitions. Word has length 311 [2021-11-21 01:27:19,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:27:19,725 INFO L470 AbstractCegarLoop]: Abstraction has 7923 states and 11190 transitions. [2021-11-21 01:27:19,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-21 01:27:19,728 INFO L276 IsEmpty]: Start isEmpty. Operand 7923 states and 11190 transitions. [2021-11-21 01:27:19,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2021-11-21 01:27:19,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:27:19,743 INFO L514 BasicCegarLoop]: 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] [2021-11-21 01:27:19,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:27:19,744 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:27:19,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:27:19,745 INFO L85 PathProgramCache]: Analyzing trace with hash 206056687, now seen corresponding path program 1 times [2021-11-21 01:27:19,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:27:19,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616932233] [2021-11-21 01:27:19,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:27:19,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:27:20,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:27:20,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1407 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1400 trivial. 0 not checked. [2021-11-21 01:27:20,493 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:27:20,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616932233] [2021-11-21 01:27:20,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616932233] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:27:20,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:27:20,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:27:20,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294205956] [2021-11-21 01:27:20,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:27:20,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:27:20,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:27:20,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:27:20,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:27:20,497 INFO L87 Difference]: Start difference. First operand 7923 states and 11190 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) [2021-11-21 01:27:22,619 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:27:24,725 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:27:27,605 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:27:29,463 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:27:30,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:27:30,665 INFO L93 Difference]: Finished difference Result 15760 states and 22265 transitions. [2021-11-21 01:27:30,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:27:30,666 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 [2021-11-21 01:27:30,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:27:30,726 INFO L225 Difference]: With dead ends: 15760 [2021-11-21 01:27:30,726 INFO L226 Difference]: Without dead ends: 7878 [2021-11-21 01:27:30,757 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:27:30,758 INFO L933 BasicCegarLoop]: 1414 mSDtfsCounter, 1 mSDsluCounter, 3235 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4235 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:27:30,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 4235 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 630 Invalid, 2 Unknown, 0 Unchecked, 9.9s Time] [2021-11-21 01:27:30,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7878 states. [2021-11-21 01:27:31,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7878 to 5984. [2021-11-21 01:27:31,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5984 states, 3911 states have (on average 1.3656353873689593) internal successors, (5341), 3943 states have internal predecessors, (5341), 1559 states have call successors, (1559), 514 states have call predecessors, (1559), 513 states have return successors, (1558), 1549 states have call predecessors, (1558), 1558 states have call successors, (1558) [2021-11-21 01:27:31,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5984 states to 5984 states and 8458 transitions. [2021-11-21 01:27:31,074 INFO L78 Accepts]: Start accepts. Automaton has 5984 states and 8458 transitions. Word has length 334 [2021-11-21 01:27:31,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:27:31,077 INFO L470 AbstractCegarLoop]: Abstraction has 5984 states and 8458 transitions. [2021-11-21 01:27:31,077 INFO L471 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) [2021-11-21 01:27:31,077 INFO L276 IsEmpty]: Start isEmpty. Operand 5984 states and 8458 transitions. [2021-11-21 01:27:31,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2021-11-21 01:27:31,091 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:27:31,092 INFO L514 BasicCegarLoop]: 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] [2021-11-21 01:27:31,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 01:27:31,092 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:27:31,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:27:31,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1111965048, now seen corresponding path program 1 times [2021-11-21 01:27:31,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:27:31,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398702969] [2021-11-21 01:27:31,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:27:31,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:27:31,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:27:31,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1407 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1407 trivial. 0 not checked. [2021-11-21 01:27:31,703 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:27:31,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398702969] [2021-11-21 01:27:31,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398702969] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:27:31,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:27:31,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:27:31,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089203004] [2021-11-21 01:27:31,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:27:31,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:27:31,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:27:31,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:27:31,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:27:31,706 INFO L87 Difference]: Start difference. First operand 5984 states and 8458 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) [2021-11-21 01:27:33,837 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:27:35,906 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:27:39,258 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:27:40,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:27:40,140 INFO L93 Difference]: Finished difference Result 13411 states and 18934 transitions. [2021-11-21 01:27:40,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:27:40,140 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 [2021-11-21 01:27:40,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:27:40,189 INFO L225 Difference]: With dead ends: 13411 [2021-11-21 01:27:40,189 INFO L226 Difference]: Without dead ends: 7476 [2021-11-21 01:27:40,215 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:27:40,216 INFO L933 BasicCegarLoop]: 1577 mSDtfsCounter, 854 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 2974 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:27:40,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [854 Valid, 2974 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 432 Invalid, 3 Unknown, 0 Unchecked, 8.2s Time] [2021-11-21 01:27:40,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7476 states. [2021-11-21 01:27:40,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7476 to 6610. [2021-11-21 01:27:40,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6610 states, 4324 states have (on average 1.3660962072155411) internal successors, (5907), 4358 states have internal predecessors, (5907), 1717 states have call successors, (1717), 569 states have call predecessors, (1717), 568 states have return successors, (1716), 1707 states have call predecessors, (1716), 1716 states have call successors, (1716) [2021-11-21 01:27:40,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6610 states to 6610 states and 9340 transitions. [2021-11-21 01:27:40,597 INFO L78 Accepts]: Start accepts. Automaton has 6610 states and 9340 transitions. Word has length 347 [2021-11-21 01:27:40,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:27:40,598 INFO L470 AbstractCegarLoop]: Abstraction has 6610 states and 9340 transitions. [2021-11-21 01:27:40,599 INFO L471 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) [2021-11-21 01:27:40,599 INFO L276 IsEmpty]: Start isEmpty. Operand 6610 states and 9340 transitions. [2021-11-21 01:27:40,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2021-11-21 01:27:40,613 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:27:40,614 INFO L514 BasicCegarLoop]: 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] [2021-11-21 01:27:40,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 01:27:40,614 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:27:40,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:27:40,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1299538812, now seen corresponding path program 1 times [2021-11-21 01:27:40,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:27:40,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587736669] [2021-11-21 01:27:40,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:27:40,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:27:40,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:27:41,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1407 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1407 trivial. 0 not checked. [2021-11-21 01:27:41,271 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:27:41,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587736669] [2021-11-21 01:27:41,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587736669] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:27:41,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:27:41,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:27:41,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275990929] [2021-11-21 01:27:41,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:27:41,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:27:41,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:27:41,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:27:41,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:27:41,274 INFO L87 Difference]: Start difference. First operand 6610 states and 9340 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) [2021-11-21 01:27:43,369 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:27:45,436 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:27:47,348 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:27:47,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:27:47,918 INFO L93 Difference]: Finished difference Result 6904 states and 9653 transitions. [2021-11-21 01:27:47,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:27:47,920 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 [2021-11-21 01:27:47,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:27:47,952 INFO L225 Difference]: With dead ends: 6904 [2021-11-21 01:27:47,952 INFO L226 Difference]: Without dead ends: 6901 [2021-11-21 01:27:47,956 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:27:47,957 INFO L933 BasicCegarLoop]: 1428 mSDtfsCounter, 1428 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 1563 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:27:47,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1428 Valid, 1563 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 234 Invalid, 2 Unknown, 0 Unchecked, 6.5s Time] [2021-11-21 01:27:47,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6901 states. [2021-11-21 01:27:48,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6901 to 6901. [2021-11-21 01:27:48,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6901 states, 4502 states have (on average 1.3598400710795202) internal successors, (6122), 4536 states have internal predecessors, (6122), 1760 states have call successors, (1760), 639 states have call predecessors, (1760), 638 states have return successors, (1759), 1750 states have call predecessors, (1759), 1759 states have call successors, (1759) [2021-11-21 01:27:48,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6901 states to 6901 states and 9641 transitions. [2021-11-21 01:27:48,311 INFO L78 Accepts]: Start accepts. Automaton has 6901 states and 9641 transitions. Word has length 339 [2021-11-21 01:27:48,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:27:48,312 INFO L470 AbstractCegarLoop]: Abstraction has 6901 states and 9641 transitions. [2021-11-21 01:27:48,312 INFO L471 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) [2021-11-21 01:27:48,312 INFO L276 IsEmpty]: Start isEmpty. Operand 6901 states and 9641 transitions. [2021-11-21 01:27:48,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2021-11-21 01:27:48,324 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:27:48,324 INFO L514 BasicCegarLoop]: 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] [2021-11-21 01:27:48,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 01:27:48,325 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:27:48,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:27:48,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1690665079, now seen corresponding path program 1 times [2021-11-21 01:27:48,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:27:48,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494295208] [2021-11-21 01:27:48,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:27:48,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:27:48,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:27:48,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1400 trivial. 0 not checked. [2021-11-21 01:27:48,918 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:27:48,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494295208] [2021-11-21 01:27:48,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494295208] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:27:48,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:27:48,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:27:48,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937424602] [2021-11-21 01:27:48,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:27:48,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:27:48,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:27:48,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:27:48,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:27:48,921 INFO L87 Difference]: Start difference. First operand 6901 states and 9641 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) [2021-11-21 01:27:51,047 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:27:53,129 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:27:55,764 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:27:57,803 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:27:58,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:27:58,625 INFO L93 Difference]: Finished difference Result 17807 states and 24890 transitions. [2021-11-21 01:27:58,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:27:58,625 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 [2021-11-21 01:27:58,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:27:58,674 INFO L225 Difference]: With dead ends: 17807 [2021-11-21 01:27:58,674 INFO L226 Difference]: Without dead ends: 10955 [2021-11-21 01:27:58,703 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:27:58,704 INFO L933 BasicCegarLoop]: 1883 mSDtfsCounter, 1396 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 53 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1396 SdHoareTripleChecker+Valid, 3182 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:27:58,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1396 Valid, 3182 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 531 Invalid, 3 Unknown, 0 Unchecked, 9.5s Time] [2021-11-21 01:27:58,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10955 states. [2021-11-21 01:27:59,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10955 to 10948. [2021-11-21 01:27:59,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10948 states, 7201 states have (on average 1.349118178030829) internal successors, (9715), 7255 states have internal predecessors, (9715), 2716 states have call successors, (2716), 1031 states have call predecessors, (2716), 1030 states have return successors, (2715), 2700 states have call predecessors, (2715), 2715 states have call successors, (2715) [2021-11-21 01:27:59,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10948 states to 10948 states and 15146 transitions. [2021-11-21 01:27:59,155 INFO L78 Accepts]: Start accepts. Automaton has 10948 states and 15146 transitions. Word has length 339 [2021-11-21 01:27:59,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:27:59,156 INFO L470 AbstractCegarLoop]: Abstraction has 10948 states and 15146 transitions. [2021-11-21 01:27:59,156 INFO L471 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) [2021-11-21 01:27:59,157 INFO L276 IsEmpty]: Start isEmpty. Operand 10948 states and 15146 transitions. [2021-11-21 01:27:59,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2021-11-21 01:27:59,172 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:27:59,172 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 8, 8, 8, 8, 8, 8, 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] [2021-11-21 01:27:59,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 01:27:59,173 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:27:59,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:27:59,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1739514091, now seen corresponding path program 1 times [2021-11-21 01:27:59,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:27:59,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69842696] [2021-11-21 01:27:59,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:27:59,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:27:59,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:27:59,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1563 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2021-11-21 01:27:59,807 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:27:59,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69842696] [2021-11-21 01:27:59,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69842696] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:27:59,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:27:59,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:27:59,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248787318] [2021-11-21 01:27:59,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:27:59,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:27:59,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:27:59,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:27:59,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:27:59,811 INFO L87 Difference]: Start difference. First operand 10948 states and 15146 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, (39), 2 states have call predecessors, (39), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-21 01:28:01,945 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:28:04,015 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:28:06,359 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:28:09,477 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:28:10,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:28:10,508 INFO L93 Difference]: Finished difference Result 25843 states and 35739 transitions. [2021-11-21 01:28:10,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:28:10,508 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, (39), 2 states have call predecessors, (39), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 350 [2021-11-21 01:28:10,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:28:10,582 INFO L225 Difference]: With dead ends: 25843 [2021-11-21 01:28:10,582 INFO L226 Difference]: Without dead ends: 14944 [2021-11-21 01:28:10,615 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:28:10,615 INFO L933 BasicCegarLoop]: 2174 mSDtfsCounter, 1074 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 9 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1076 SdHoareTripleChecker+Valid, 3413 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:28:10,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1076 Valid, 3413 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 500 Invalid, 4 Unknown, 0 Unchecked, 10.4s Time] [2021-11-21 01:28:10,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14944 states. [2021-11-21 01:28:11,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14944 to 14927. [2021-11-21 01:28:11,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14927 states, 9913 states have (on average 1.351558559467366) internal successors, (13398), 9991 states have internal predecessors, (13398), 3591 states have call successors, (3591), 1423 states have call predecessors, (3591), 1422 states have return successors, (3596), 3560 states have call predecessors, (3596), 3590 states have call successors, (3596) [2021-11-21 01:28:11,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14927 states to 14927 states and 20585 transitions. [2021-11-21 01:28:11,497 INFO L78 Accepts]: Start accepts. Automaton has 14927 states and 20585 transitions. Word has length 350 [2021-11-21 01:28:11,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:28:11,498 INFO L470 AbstractCegarLoop]: Abstraction has 14927 states and 20585 transitions. [2021-11-21 01:28:11,498 INFO L471 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, (39), 2 states have call predecessors, (39), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-21 01:28:11,498 INFO L276 IsEmpty]: Start isEmpty. Operand 14927 states and 20585 transitions. [2021-11-21 01:28:11,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2021-11-21 01:28:11,519 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:28:11,519 INFO L514 BasicCegarLoop]: 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] [2021-11-21 01:28:11,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 01:28:11,520 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:28:11,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:28:11,521 INFO L85 PathProgramCache]: Analyzing trace with hash -446321812, now seen corresponding path program 1 times [2021-11-21 01:28:11,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:28:11,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979189387] [2021-11-21 01:28:11,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:28:11,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:28:12,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:28:12,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1417 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 1405 trivial. 0 not checked. [2021-11-21 01:28:12,811 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:28:12,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979189387] [2021-11-21 01:28:12,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979189387] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:28:12,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319145611] [2021-11-21 01:28:12,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:28:12,812 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:28:12,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4005c4bf-b311-4d4a-bbb7-bea7e42df9e5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:28:12,814 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4005c4bf-b311-4d4a-bbb7-bea7e42df9e5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:28:12,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4005c4bf-b311-4d4a-bbb7-bea7e42df9e5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:28:14,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:28:14,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 6601 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:28:14,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:28:15,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1417 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 1123 trivial. 0 not checked. [2021-11-21 01:28:15,353 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:28:15,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319145611] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:28:15,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:28:15,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2021-11-21 01:28:15,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547604540] [2021-11-21 01:28:15,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:28:15,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:28:15,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:28:15,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:28:15,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-21 01:28:15,355 INFO L87 Difference]: Start difference. First operand 14927 states and 20585 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) [2021-11-21 01:28:17,489 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:28:19,614 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:28:23,815 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:28:25,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:28:25,115 INFO L93 Difference]: Finished difference Result 28644 states and 39501 transitions. [2021-11-21 01:28:25,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:28:25,115 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 [2021-11-21 01:28:25,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:28:25,173 INFO L225 Difference]: With dead ends: 28644 [2021-11-21 01:28:25,173 INFO L226 Difference]: Without dead ends: 13752 [2021-11-21 01:28:25,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-21 01:28:25,204 INFO L933 BasicCegarLoop]: 1411 mSDtfsCounter, 5 mSDsluCounter, 4838 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 5633 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:28:25,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 5633 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 837 Invalid, 3 Unknown, 0 Unchecked, 9.3s Time] [2021-11-21 01:28:25,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13752 states. [2021-11-21 01:28:25,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13752 to 13749. [2021-11-21 01:28:25,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13749 states, 9129 states have (on average 1.3519553072625698) internal successors, (12342), 9203 states have internal predecessors, (12342), 3310 states have call successors, (3310), 1310 states have call predecessors, (3310), 1309 states have return successors, (3315), 3280 states have call predecessors, (3315), 3309 states have call successors, (3315) [2021-11-21 01:28:25,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13749 states to 13749 states and 18967 transitions. [2021-11-21 01:28:25,839 INFO L78 Accepts]: Start accepts. Automaton has 13749 states and 18967 transitions. Word has length 357 [2021-11-21 01:28:25,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:28:25,840 INFO L470 AbstractCegarLoop]: Abstraction has 13749 states and 18967 transitions. [2021-11-21 01:28:25,841 INFO L471 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) [2021-11-21 01:28:25,841 INFO L276 IsEmpty]: Start isEmpty. Operand 13749 states and 18967 transitions. [2021-11-21 01:28:25,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2021-11-21 01:28:25,854 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:28:25,854 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 8, 8, 8, 8, 8, 8, 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, 1, 1] [2021-11-21 01:28:25,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4005c4bf-b311-4d4a-bbb7-bea7e42df9e5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:28:26,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4005c4bf-b311-4d4a-bbb7-bea7e42df9e5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-21 01:28:26,069 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:28:26,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:28:26,069 INFO L85 PathProgramCache]: Analyzing trace with hash -108945322, now seen corresponding path program 1 times [2021-11-21 01:28:26,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:28:26,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462596439] [2021-11-21 01:28:26,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:28:26,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:28:26,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:28:27,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1571 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1565 trivial. 0 not checked. [2021-11-21 01:28:27,000 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:28:27,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462596439] [2021-11-21 01:28:27,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462596439] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:28:27,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:28:27,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:28:27,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915932739] [2021-11-21 01:28:27,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:28:27,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:28:27,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:28:27,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:28:27,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:28:27,003 INFO L87 Difference]: Start difference. First operand 13749 states and 18967 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, (40), 2 states have call predecessors, (40), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-21 01:28:29,109 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:28:31,221 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:28:36,676 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:28:38,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:28:38,746 INFO L93 Difference]: Finished difference Result 31388 states and 43334 transitions. [2021-11-21 01:28:38,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:28:38,747 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, (40), 2 states have call predecessors, (40), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 362 [2021-11-21 01:28:38,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:28:38,811 INFO L225 Difference]: With dead ends: 31388 [2021-11-21 01:28:38,811 INFO L226 Difference]: Without dead ends: 17696 [2021-11-21 01:28:38,843 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:28:38,844 INFO L933 BasicCegarLoop]: 1997 mSDtfsCounter, 1371 mSDsluCounter, 2855 mSDsCounter, 0 mSdLazyCounter, 1194 mSolverCounterSat, 30 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1445 SdHoareTripleChecker+Valid, 4479 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1194 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:28:38,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1445 Valid, 4479 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1194 Invalid, 3 Unknown, 0 Unchecked, 11.1s Time] [2021-11-21 01:28:38,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17696 states. [2021-11-21 01:28:39,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17696 to 17655. [2021-11-21 01:28:39,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17655 states, 11808 states have (on average 1.3542513550135502) internal successors, (15991), 11899 states have internal predecessors, (15991), 4172 states have call successors, (4172), 1675 states have call predecessors, (4172), 1674 states have return successors, (4177), 4134 states have call predecessors, (4177), 4171 states have call successors, (4177) [2021-11-21 01:28:39,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17655 states to 17655 states and 24340 transitions. [2021-11-21 01:28:39,606 INFO L78 Accepts]: Start accepts. Automaton has 17655 states and 24340 transitions. Word has length 362 [2021-11-21 01:28:39,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:28:39,607 INFO L470 AbstractCegarLoop]: Abstraction has 17655 states and 24340 transitions. [2021-11-21 01:28:39,607 INFO L471 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, (40), 2 states have call predecessors, (40), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-21 01:28:39,607 INFO L276 IsEmpty]: Start isEmpty. Operand 17655 states and 24340 transitions. [2021-11-21 01:28:39,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2021-11-21 01:28:39,625 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:28:39,625 INFO L514 BasicCegarLoop]: 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] [2021-11-21 01:28:39,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-21 01:28:39,626 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:28:39,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:28:39,627 INFO L85 PathProgramCache]: Analyzing trace with hash -863296086, now seen corresponding path program 1 times [2021-11-21 01:28:39,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:28:39,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895037082] [2021-11-21 01:28:39,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:28:39,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:28:40,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:28:40,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1577 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 1565 trivial. 0 not checked. [2021-11-21 01:28:40,997 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:28:40,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895037082] [2021-11-21 01:28:40,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895037082] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:28:40,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348920008] [2021-11-21 01:28:40,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:28:40,998 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:28:40,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4005c4bf-b311-4d4a-bbb7-bea7e42df9e5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:28:41,000 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4005c4bf-b311-4d4a-bbb7-bea7e42df9e5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:28:41,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4005c4bf-b311-4d4a-bbb7-bea7e42df9e5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 01:28:42,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:28:42,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 6723 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-21 01:28:42,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:28:43,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1577 backedges. 434 proven. 0 refuted. 0 times theorem prover too weak. 1143 trivial. 0 not checked. [2021-11-21 01:28:43,727 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:28:43,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348920008] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:28:43,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:28:43,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2021-11-21 01:28:43,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315644531] [2021-11-21 01:28:43,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:28:43,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:28:43,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:28:43,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:28:43,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:28:43,730 INFO L87 Difference]: Start difference. First operand 17655 states and 24340 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) [2021-11-21 01:28:45,826 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:28:48,074 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:28:51,286 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:28:54,619 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:28:56,650 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:28:57,848 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:28:59,878 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:29:01,909 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:29:04,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:29:04,039 INFO L93 Difference]: Finished difference Result 35401 states and 48879 transitions. [2021-11-21 01:29:04,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:29:04,040 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 [2021-11-21 01:29:04,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:29:04,215 INFO L225 Difference]: With dead ends: 35401 [2021-11-21 01:29:04,215 INFO L226 Difference]: Without dead ends: 17735 [2021-11-21 01:29:04,259 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:29:04,260 INFO L933 BasicCegarLoop]: 1404 mSDtfsCounter, 1 mSDsluCounter, 6421 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 7015 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:29:04,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 7015 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1024 Invalid, 6 Unknown, 0 Unchecked, 19.7s Time] [2021-11-21 01:29:04,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17735 states. [2021-11-21 01:29:05,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17735 to 17717. [2021-11-21 01:29:05,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17717 states, 11839 states have (on average 1.3532392938592785) internal successors, (16021), 11961 states have internal predecessors, (16021), 4172 states have call successors, (4172), 1675 states have call predecessors, (4172), 1705 states have return successors, (4275), 4134 states have call predecessors, (4275), 4171 states have call successors, (4275) [2021-11-21 01:29:05,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17717 states to 17717 states and 24468 transitions. [2021-11-21 01:29:05,108 INFO L78 Accepts]: Start accepts. Automaton has 17717 states and 24468 transitions. Word has length 366 [2021-11-21 01:29:05,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:29:05,109 INFO L470 AbstractCegarLoop]: Abstraction has 17717 states and 24468 transitions. [2021-11-21 01:29:05,109 INFO L471 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) [2021-11-21 01:29:05,109 INFO L276 IsEmpty]: Start isEmpty. Operand 17717 states and 24468 transitions. [2021-11-21 01:29:05,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2021-11-21 01:29:05,126 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:29:05,127 INFO L514 BasicCegarLoop]: 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] [2021-11-21 01:29:05,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4005c4bf-b311-4d4a-bbb7-bea7e42df9e5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:29:05,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4005c4bf-b311-4d4a-bbb7-bea7e42df9e5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-21 01:29:05,348 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:29:05,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:29:05,349 INFO L85 PathProgramCache]: Analyzing trace with hash 645719744, now seen corresponding path program 1 times [2021-11-21 01:29:05,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:29:05,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384458156] [2021-11-21 01:29:05,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:29:05,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:29:06,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:29:07,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 1618 trivial. 0 not checked. [2021-11-21 01:29:07,283 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:29:07,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384458156] [2021-11-21 01:29:07,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384458156] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:29:07,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684128830] [2021-11-21 01:29:07,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:29:07,284 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:29:07,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4005c4bf-b311-4d4a-bbb7-bea7e42df9e5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:29:07,288 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4005c4bf-b311-4d4a-bbb7-bea7e42df9e5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:29:07,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4005c4bf-b311-4d4a-bbb7-bea7e42df9e5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 01:29:09,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:29:09,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 6782 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-21 01:29:09,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:29:10,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 525 proven. 0 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2021-11-21 01:29:10,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:29:10,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684128830] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:29:10,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:29:10,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2021-11-21 01:29:10,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479510028] [2021-11-21 01:29:10,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:29:10,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:29:10,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:29:10,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:29:10,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:29:10,517 INFO L87 Difference]: Start difference. First operand 17717 states and 24468 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) [2021-11-21 01:29:12,659 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:29:14,984 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:29:17,965 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:29:21,631 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:29:23,668 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:29:25,704 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:29:27,744 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:29:29,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:29:29,970 INFO L93 Difference]: Finished difference Result 35444 states and 49014 transitions. [2021-11-21 01:29:29,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:29:29,971 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 [2021-11-21 01:29:29,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:29:30,032 INFO L225 Difference]: With dead ends: 35444 [2021-11-21 01:29:30,032 INFO L226 Difference]: Without dead ends: 17740 [2021-11-21 01:29:30,073 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:29:30,073 INFO L933 BasicCegarLoop]: 1393 mSDtfsCounter, 3 mSDsluCounter, 6360 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 10 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 6942 SdHoareTripleChecker+Invalid, 1102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:29:30,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 6942 Invalid, 1102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1085 Invalid, 7 Unknown, 0 Unchecked, 18.9s Time] [2021-11-21 01:29:30,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17740 states. [2021-11-21 01:29:30,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17740 to 17740. [2021-11-21 01:29:30,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17740 states, 11862 states have (on average 1.3525543753161355) internal successors, (16044), 11984 states have internal predecessors, (16044), 4172 states have call successors, (4172), 1675 states have call predecessors, (4172), 1705 states have return successors, (4275), 4134 states have call predecessors, (4275), 4171 states have call successors, (4275) [2021-11-21 01:29:30,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17740 states to 17740 states and 24491 transitions. [2021-11-21 01:29:30,822 INFO L78 Accepts]: Start accepts. Automaton has 17740 states and 24491 transitions. Word has length 380 [2021-11-21 01:29:30,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:29:30,823 INFO L470 AbstractCegarLoop]: Abstraction has 17740 states and 24491 transitions. [2021-11-21 01:29:30,823 INFO L471 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) [2021-11-21 01:29:30,823 INFO L276 IsEmpty]: Start isEmpty. Operand 17740 states and 24491 transitions. [2021-11-21 01:29:30,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2021-11-21 01:29:30,840 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:29:30,841 INFO L514 BasicCegarLoop]: 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] [2021-11-21 01:29:30,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4005c4bf-b311-4d4a-bbb7-bea7e42df9e5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 01:29:31,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4005c4bf-b311-4d4a-bbb7-bea7e42df9e5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:29:31,068 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:29:31,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:29:31,069 INFO L85 PathProgramCache]: Analyzing trace with hash -699154352, now seen corresponding path program 1 times [2021-11-21 01:29:31,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:29:31,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755369274] [2021-11-21 01:29:31,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:29:31,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:29:33,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:29:33,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1745 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 1688 trivial. 0 not checked. [2021-11-21 01:29:33,474 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:29:33,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755369274] [2021-11-21 01:29:33,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755369274] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:29:33,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767869762] [2021-11-21 01:29:33,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:29:33,475 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:29:33,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4005c4bf-b311-4d4a-bbb7-bea7e42df9e5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:29:33,480 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4005c4bf-b311-4d4a-bbb7-bea7e42df9e5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:29:33,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4005c4bf-b311-4d4a-bbb7-bea7e42df9e5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 01:29:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:29:35,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 6830 conjuncts, 215 conjunts are in the unsatisfiable core [2021-11-21 01:29:35,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:29:35,583 INFO L354 Elim1Store]: treesize reduction 587, result has 5.8 percent of original size [2021-11-21 01:29:35,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 136 treesize of output 141 [2021-11-21 01:29:35,950 INFO L354 Elim1Store]: treesize reduction 80, result has 1.2 percent of original size [2021-11-21 01:29:35,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 73 treesize of output 63 [2021-11-21 01:29:36,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 10 treesize of output 9 [2021-11-21 01:29:36,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 10 treesize of output 9 [2021-11-21 01:29:36,373 INFO L354 Elim1Store]: treesize reduction 70, result has 27.1 percent of original size [2021-11-21 01:29:36,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 49 [2021-11-21 01:29:36,686 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-11-21 01:29:36,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 81 treesize of output 69 [2021-11-21 01:29:36,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 10 treesize of output 9 [2021-11-21 01:29:36,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 10 treesize of output 9 [2021-11-21 01:29:37,142 INFO L354 Elim1Store]: treesize reduction 124, result has 20.0 percent of original size [2021-11-21 01:29:37,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 43 treesize of output 60 [2021-11-21 01:29:37,416 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-11-21 01:29:37,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 81 treesize of output 69 [2021-11-21 01:29:37,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 10 treesize of output 9 [2021-11-21 01:29:37,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 10 treesize of output 9 [2021-11-21 01:29:37,764 INFO L354 Elim1Store]: treesize reduction 124, result has 20.0 percent of original size [2021-11-21 01:29:37,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 43 treesize of output 60 [2021-11-21 01:29:38,014 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-11-21 01:29:38,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 81 treesize of output 69 [2021-11-21 01:29:38,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 10 treesize of output 9 [2021-11-21 01:29:38,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 10 treesize of output 9 [2021-11-21 01:29:38,391 INFO L354 Elim1Store]: treesize reduction 124, result has 20.0 percent of original size [2021-11-21 01:29:38,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 43 treesize of output 60 [2021-11-21 01:29:38,685 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-11-21 01:29:38,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 81 treesize of output 69 [2021-11-21 01:29:38,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 10 treesize of output 9 [2021-11-21 01:29:38,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 10 treesize of output 9 [2021-11-21 01:29:39,008 INFO L354 Elim1Store]: treesize reduction 124, result has 20.0 percent of original size [2021-11-21 01:29:39,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 43 treesize of output 60 [2021-11-21 01:29:39,305 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-11-21 01:29:39,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 81 treesize of output 69 [2021-11-21 01:29:39,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 10 treesize of output 9 [2021-11-21 01:29:39,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 10 treesize of output 9 [2021-11-21 01:29:39,673 INFO L354 Elim1Store]: treesize reduction 124, result has 20.0 percent of original size [2021-11-21 01:29:39,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 43 treesize of output 60 [2021-11-21 01:29:39,908 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-11-21 01:29:39,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 81 treesize of output 69 [2021-11-21 01:29:39,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 10 treesize of output 9 [2021-11-21 01:29:40,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 10 treesize of output 9 [2021-11-21 01:29:40,249 INFO L354 Elim1Store]: treesize reduction 124, result has 20.0 percent of original size [2021-11-21 01:29:40,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 43 treesize of output 60 [2021-11-21 01:29:40,531 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-11-21 01:29:40,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 81 treesize of output 69 [2021-11-21 01:29:40,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 10 treesize of output 9 [2021-11-21 01:29:40,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 10 treesize of output 9 [2021-11-21 01:29:40,856 INFO L354 Elim1Store]: treesize reduction 124, result has 20.0 percent of original size [2021-11-21 01:29:40,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 43 treesize of output 60 [2021-11-21 01:29:41,162 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-11-21 01:29:41,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 81 treesize of output 69 [2021-11-21 01:29:41,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 10 treesize of output 9 [2021-11-21 01:29:41,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 10 treesize of output 9 [2021-11-21 01:29:41,497 INFO L354 Elim1Store]: treesize reduction 124, result has 20.0 percent of original size [2021-11-21 01:29:41,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 43 treesize of output 60 [2021-11-21 01:29:41,702 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-11-21 01:29:41,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 81 treesize of output 69 [2021-11-21 01:29:41,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 10 treesize of output 9 [2021-11-21 01:29:41,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 10 treesize of output 9 [2021-11-21 01:29:42,059 INFO L354 Elim1Store]: treesize reduction 124, result has 20.0 percent of original size [2021-11-21 01:29:42,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 43 treesize of output 60 [2021-11-21 01:29:42,319 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-11-21 01:29:42,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 81 treesize of output 69 [2021-11-21 01:29:42,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-21 01:29:42,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-21 01:29:42,671 INFO L354 Elim1Store]: treesize reduction 124, result has 20.0 percent of original size [2021-11-21 01:29:42,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 40 treesize of output 57 [2021-11-21 01:29:42,870 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-11-21 01:29:42,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 81 treesize of output 69 [2021-11-21 01:29:42,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-21 01:29:42,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-21 01:29:43,136 INFO L354 Elim1Store]: treesize reduction 124, result has 20.0 percent of original size [2021-11-21 01:29:43,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 40 treesize of output 57 [2021-11-21 01:29:43,357 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-11-21 01:29:43,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 81 treesize of output 69 [2021-11-21 01:29:43,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 10 treesize of output 9 [2021-11-21 01:29:43,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 10 treesize of output 9 [2021-11-21 01:29:43,687 INFO L354 Elim1Store]: treesize reduction 124, result has 20.0 percent of original size [2021-11-21 01:29:43,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 43 treesize of output 60 [2021-11-21 01:29:43,922 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-11-21 01:29:43,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 81 treesize of output 69 [2021-11-21 01:29:43,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-21 01:29:44,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-21 01:29:44,236 INFO L354 Elim1Store]: treesize reduction 124, result has 20.0 percent of original size [2021-11-21 01:29:44,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 40 treesize of output 57 [2021-11-21 01:29:53,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:29:55,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 76 [2021-11-21 01:30:41,695 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-21 01:30:41,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 42 treesize of output 41 [2021-11-21 01:30:48,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 55 [2021-11-21 01:31:32,210 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-21 01:31:32,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-11-21 01:31:39,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2021-11-21 01:32:25,151 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-21 01:32:25,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 34 treesize of output 33 [2021-11-21 01:32:30,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-11-21 01:33:15,667 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-21 01:33:15,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2021-11-21 01:33:30,666 INFO L354 Elim1Store]: treesize reduction 168, result has 0.6 percent of original size [2021-11-21 01:33:30,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 100 treesize of output 86 [2021-11-21 01:33:31,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 10 treesize of output 9 [2021-11-21 01:33:31,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 10 treesize of output 9 [2021-11-21 01:33:31,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 10 treesize of output 9 [2021-11-21 01:33:32,547 INFO L354 Elim1Store]: treesize reduction 266, result has 11.9 percent of original size [2021-11-21 01:33:32,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 98 treesize of output 118