./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI --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 26d71a6766df17a2d23a86b348a9251fef4bcae90cf6020641e74c486ac2b1eb --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:26:39,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:26:39,150 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:26:39,216 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:26:39,217 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:26:39,222 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:26:39,225 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:26:39,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:26:39,232 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:26:39,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:26:39,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:26:39,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:26:39,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:26:39,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:26:39,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:26:39,245 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:26:39,253 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:26:39,254 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:26:39,256 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:26:39,267 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:26:39,270 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:26:39,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:26:39,277 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:26:39,279 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:26:39,286 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:26:39,286 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:26:39,287 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:26:39,288 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:26:39,288 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:26:39,289 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:26:39,290 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:26:39,291 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:26:39,292 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:26:39,293 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:26:39,300 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:26:39,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:26:39,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:26:39,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:26:39,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:26:39,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:26:39,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:26:39,307 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:26:39,363 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:26:39,363 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:26:39,364 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:26:39,365 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:26:39,366 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:26:39,366 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:26:39,367 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:26:39,367 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:26:39,367 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:26:39,367 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:26:39,369 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:26:39,369 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:26:39,369 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:26:39,370 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:26:39,370 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:26:39,370 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:26:39,370 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:26:39,370 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:26:39,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:26:39,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:26:39,372 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:26:39,372 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:26:39,372 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:26:39,375 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:26:39,375 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:26:39,375 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:26:39,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:26:39,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:26:39,376 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:26:39,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:26:39,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:26:39,377 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:26:39,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:26:39,378 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:26:39,378 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:26:39,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:26:39,389 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:26:39,390 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:26:39,390 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26d71a6766df17a2d23a86b348a9251fef4bcae90cf6020641e74c486ac2b1eb [2022-11-03 02:26:39,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:26:39,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:26:39,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:26:39,810 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:26:39,811 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:26:39,813 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i [2022-11-03 02:26:39,913 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/data/4970c9e97/efbb4c11ad794fcd91ac7e83e4f568ee/FLAG83ff37d2b [2022-11-03 02:26:41,069 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:26:41,069 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i [2022-11-03 02:26:41,134 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/data/4970c9e97/efbb4c11ad794fcd91ac7e83e4f568ee/FLAG83ff37d2b [2022-11-03 02:26:41,274 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/data/4970c9e97/efbb4c11ad794fcd91ac7e83e4f568ee [2022-11-03 02:26:41,278 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:26:41,281 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:26:41,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:26:41,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:26:41,290 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:26:41,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:26:41" (1/1) ... [2022-11-03 02:26:41,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49e48fc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:26:41, skipping insertion in model container [2022-11-03 02:26:41,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:26:41" (1/1) ... [2022-11-03 02:26:41,304 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:26:41,478 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:26:42,959 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_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i[172824,172837] [2022-11-03 02:26:44,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:26:44,335 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:26:44,550 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_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i[172824,172837] [2022-11-03 02:26:44,854 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:26:45,065 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:26:45,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:26:45 WrapperNode [2022-11-03 02:26:45,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:26:45,067 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:26:45,068 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:26:45,068 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:26:45,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:26:45" (1/1) ... [2022-11-03 02:26:45,187 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:26:45" (1/1) ... [2022-11-03 02:26:45,472 INFO L138 Inliner]: procedures = 310, calls = 1780, calls flagged for inlining = 174, calls inlined = 157, statements flattened = 4697 [2022-11-03 02:26:45,473 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:26:45,473 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:26:45,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:26:45,474 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:26:45,486 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:26:45" (1/1) ... [2022-11-03 02:26:45,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:26:45" (1/1) ... [2022-11-03 02:26:45,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:26:45" (1/1) ... [2022-11-03 02:26:45,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:26:45" (1/1) ... [2022-11-03 02:26:45,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:26:45" (1/1) ... [2022-11-03 02:26:45,829 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:26:45" (1/1) ... [2022-11-03 02:26:45,880 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:26:45" (1/1) ... [2022-11-03 02:26:45,906 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:26:45" (1/1) ... [2022-11-03 02:26:45,952 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:26:45,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:26:45,955 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:26:45,955 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:26:45,957 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:26:45" (1/1) ... [2022-11-03 02:26:45,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:26:45,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:26:46,001 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:26:46,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:26:46,058 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-03 02:26:46,058 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-03 02:26:46,059 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_free [2022-11-03 02:26:46,059 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_free [2022-11-03 02:26:46,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:26:46,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:26:46,059 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-03 02:26:46,060 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-03 02:26:46,060 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_dmac_soft_reset [2022-11-03 02:26:46,060 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_dmac_soft_reset [2022-11-03 02:26:46,060 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:26:46,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:26:46,061 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_unregister [2022-11-03 02:26:46,061 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_unregister [2022-11-03 02:26:46,061 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-03 02:26:46,061 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-03 02:26:46,061 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:26:46,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:26:46,062 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_remove [2022-11-03 02:26:46,062 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_remove [2022-11-03 02:26:46,062 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-03 02:26:46,062 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_eeprom_send_cmd [2022-11-03 02:26:46,063 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_eeprom_send_cmd [2022-11-03 02:26:46,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-11-03 02:26:46,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-11-03 02:26:46,063 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-03 02:26:46,063 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-03 02:26:46,064 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_free_rx_ring [2022-11-03 02:26:46,064 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_free_rx_ring [2022-11-03 02:26:46,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 02:26:46,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 02:26:46,065 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-03 02:26:46,065 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-03 02:26:46,065 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-03 02:26:46,065 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-03 02:26:46,066 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-03 02:26:46,066 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-03 02:26:46,066 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 02:26:46,066 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 02:26:46,066 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_reg_read [2022-11-03 02:26:46,067 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_reg_read [2022-11-03 02:26:46,067 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 02:26:46,067 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 02:26:46,067 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_set_mac_address [2022-11-03 02:26:46,067 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_set_mac_address [2022-11-03 02:26:46,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:26:46,069 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_get_stats [2022-11-03 02:26:46,069 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_get_stats [2022-11-03 02:26:46,070 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2022-11-03 02:26:46,071 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2022-11-03 02:26:46,071 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-03 02:26:46,071 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-03 02:26:46,072 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2022-11-03 02:26:46,072 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2022-11-03 02:26:46,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:26:46,072 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-03 02:26:46,072 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-03 02:26:46,072 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-03 02:26:46,073 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-03 02:26:46,073 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-03 02:26:46,074 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-03 02:26:46,074 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-03 02:26:46,074 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-03 02:26:46,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2022-11-03 02:26:46,074 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_open [2022-11-03 02:26:46,075 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_open [2022-11-03 02:26:46,075 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 02:26:46,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 02:26:46,075 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 02:26:46,075 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 02:26:46,076 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2022-11-03 02:26:46,076 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2022-11-03 02:26:46,077 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-03 02:26:46,077 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-03 02:26:46,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:26:46,077 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-03 02:26:46,078 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-03 02:26:46,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:26:46,078 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-03 02:26:46,078 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-03 02:26:46,078 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 02:26:46,078 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 02:26:46,080 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 02:26:46,080 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 02:26:46,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:26:46,080 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-03 02:26:46,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-03 02:26:46,080 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 02:26:46,082 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 02:26:46,082 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 02:26:46,082 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 02:26:46,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:26:46,083 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_eeprom_enable_access [2022-11-03 02:26:46,083 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_eeprom_enable_access [2022-11-03 02:26:46,084 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2022-11-03 02:26:46,084 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2022-11-03 02:26:46,084 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_reg_write [2022-11-03 02:26:46,084 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_reg_write [2022-11-03 02:26:46,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:26:46,085 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 02:26:46,085 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 02:26:46,085 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-03 02:26:46,085 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-03 02:26:46,086 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2022-11-03 02:26:46,086 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2022-11-03 02:26:46,086 INFO L130 BoogieDeclarations]: Found specification of procedure pci_choose_state [2022-11-03 02:26:46,086 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_choose_state [2022-11-03 02:26:46,087 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-03 02:26:46,087 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-03 02:26:46,088 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 02:26:46,089 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 02:26:46,092 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-03 02:26:46,092 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-03 02:26:46,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:26:46,093 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-03 02:26:46,093 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-03 02:26:46,094 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2022-11-03 02:26:46,095 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2022-11-03 02:26:46,095 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:26:46,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:26:46,101 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_set_multicast_list [2022-11-03 02:26:46,102 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_set_multicast_list [2022-11-03 02:26:46,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:26:46,102 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-03 02:26:46,102 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-03 02:26:46,102 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-03 02:26:46,102 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-03 02:26:46,103 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_alloc_rx_buffer [2022-11-03 02:26:46,103 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_alloc_rx_buffer [2022-11-03 02:26:46,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:26:46,103 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-03 02:26:46,103 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-03 02:26:46,103 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_stop_rx [2022-11-03 02:26:46,104 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_stop_rx [2022-11-03 02:26:46,104 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2022-11-03 02:26:46,104 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2022-11-03 02:26:46,104 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 02:26:46,104 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 02:26:46,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:26:46,105 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 02:26:46,105 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-03 02:26:46,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-03 02:26:46,105 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2022-11-03 02:26:46,105 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2022-11-03 02:26:46,105 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_isr [2022-11-03 02:26:46,106 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_isr [2022-11-03 02:26:46,106 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_disable [2022-11-03 02:26:46,106 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_disable [2022-11-03 02:26:46,106 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_do_ioctl [2022-11-03 02:26:46,106 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_do_ioctl [2022-11-03 02:26:46,106 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_poll_controller [2022-11-03 02:26:46,107 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_poll_controller [2022-11-03 02:26:46,107 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-03 02:26:46,107 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-03 02:26:46,107 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2022-11-03 02:26:46,107 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2022-11-03 02:26:46,107 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 02:26:46,108 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 02:26:46,108 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_stop_tx [2022-11-03 02:26:46,108 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_stop_tx [2022-11-03 02:26:46,108 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-11-03 02:26:46,108 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-11-03 02:26:46,108 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-03 02:26:46,109 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-03 02:26:46,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:26:46,109 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_free_tx_ring [2022-11-03 02:26:46,109 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_free_tx_ring [2022-11-03 02:26:46,109 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2022-11-03 02:26:46,109 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2022-11-03 02:26:46,109 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_pci_flush_write [2022-11-03 02:26:46,110 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_pci_flush_write [2022-11-03 02:26:46,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:26:46,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:26:46,111 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 02:26:46,111 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 02:26:47,219 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:26:47,223 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:26:47,610 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:26:52,651 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:26:54,174 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:26:54,174 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:26:54,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:26:54 BoogieIcfgContainer [2022-11-03 02:26:54,181 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:26:54,184 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:26:54,184 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:26:54,190 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:26:54,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:26:41" (1/3) ... [2022-11-03 02:26:54,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d2d1041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:26:54, skipping insertion in model container [2022-11-03 02:26:54,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:26:45" (2/3) ... [2022-11-03 02:26:54,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d2d1041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:26:54, skipping insertion in model container [2022-11-03 02:26:54,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:26:54" (3/3) ... [2022-11-03 02:26:54,193 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i [2022-11-03 02:26:54,216 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:26:54,217 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:26:54,335 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:26:54,342 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@41e5b566, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:26:54,343 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:26:54,353 INFO L276 IsEmpty]: Start isEmpty. Operand has 1223 states, 729 states have (on average 1.3237311385459534) internal successors, (965), 756 states have internal predecessors, (965), 415 states have call successors, (415), 78 states have call predecessors, (415), 77 states have return successors, (408), 405 states have call predecessors, (408), 408 states have call successors, (408) [2022-11-03 02:26:54,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-03 02:26:54,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:54,370 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:54,371 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:54,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:54,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1331406220, now seen corresponding path program 1 times [2022-11-03 02:26:54,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:54,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574871140] [2022-11-03 02:26:54,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:54,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:54,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:55,439 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-11-03 02:26:55,440 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:55,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574871140] [2022-11-03 02:26:55,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574871140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:55,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:55,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:26:55,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347343343] [2022-11-03 02:26:55,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:55,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:26:55,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:55,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:26:55,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:26:55,524 INFO L87 Difference]: Start difference. First operand has 1223 states, 729 states have (on average 1.3237311385459534) internal successors, (965), 756 states have internal predecessors, (965), 415 states have call successors, (415), 78 states have call predecessors, (415), 77 states have return successors, (408), 405 states have call predecessors, (408), 408 states have call successors, (408) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-03 02:26:58,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:58,247 INFO L93 Difference]: Finished difference Result 3607 states and 5284 transitions. [2022-11-03 02:26:58,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:26:58,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 73 [2022-11-03 02:26:58,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:58,307 INFO L225 Difference]: With dead ends: 3607 [2022-11-03 02:26:58,307 INFO L226 Difference]: Without dead ends: 2336 [2022-11-03 02:26:58,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:26:58,332 INFO L413 NwaCegarLoop]: 1993 mSDtfsCounter, 1723 mSDsluCounter, 1774 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1723 SdHoareTripleChecker+Valid, 3579 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:58,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1723 Valid, 3579 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-03 02:26:58,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2336 states. [2022-11-03 02:26:58,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2336 to 2336. [2022-11-03 02:26:58,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2336 states, 1382 states have (on average 1.2858176555716354) internal successors, (1777), 1418 states have internal predecessors, (1777), 801 states have call successors, (801), 153 states have call predecessors, (801), 152 states have return successors, (800), 794 states have call predecessors, (800), 800 states have call successors, (800) [2022-11-03 02:26:58,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2336 states to 2336 states and 3378 transitions. [2022-11-03 02:26:58,633 INFO L78 Accepts]: Start accepts. Automaton has 2336 states and 3378 transitions. Word has length 73 [2022-11-03 02:26:58,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:58,634 INFO L495 AbstractCegarLoop]: Abstraction has 2336 states and 3378 transitions. [2022-11-03 02:26:58,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-03 02:26:58,635 INFO L276 IsEmpty]: Start isEmpty. Operand 2336 states and 3378 transitions. [2022-11-03 02:26:58,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-03 02:26:58,640 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:58,640 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:58,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:26:58,641 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:58,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:58,642 INFO L85 PathProgramCache]: Analyzing trace with hash -823056911, now seen corresponding path program 1 times [2022-11-03 02:26:58,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:58,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55157245] [2022-11-03 02:26:58,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:58,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:58,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:59,499 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-11-03 02:26:59,500 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:59,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55157245] [2022-11-03 02:26:59,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55157245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:59,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:59,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:26:59,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564308932] [2022-11-03 02:26:59,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:59,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:26:59,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:59,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:26:59,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:26:59,509 INFO L87 Difference]: Start difference. First operand 2336 states and 3378 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-03 02:27:02,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:02,137 INFO L93 Difference]: Finished difference Result 4650 states and 6731 transitions. [2022-11-03 02:27:02,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:27:02,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 76 [2022-11-03 02:27:02,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:02,180 INFO L225 Difference]: With dead ends: 4650 [2022-11-03 02:27:02,180 INFO L226 Difference]: Without dead ends: 4645 [2022-11-03 02:27:02,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:27:02,186 INFO L413 NwaCegarLoop]: 1946 mSDtfsCounter, 1699 mSDsluCounter, 3819 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1699 SdHoareTripleChecker+Valid, 5389 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:02,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1699 Valid, 5389 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-03 02:27:02,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4645 states. [2022-11-03 02:27:02,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4645 to 4643. [2022-11-03 02:27:02,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4643 states, 2747 states have (on average 1.286130323989807) internal successors, (3533), 2819 states have internal predecessors, (3533), 1591 states have call successors, (1591), 305 states have call predecessors, (1591), 304 states have return successors, (1598), 1578 states have call predecessors, (1598), 1590 states have call successors, (1598) [2022-11-03 02:27:02,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4643 states to 4643 states and 6722 transitions. [2022-11-03 02:27:02,637 INFO L78 Accepts]: Start accepts. Automaton has 4643 states and 6722 transitions. Word has length 76 [2022-11-03 02:27:02,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:02,638 INFO L495 AbstractCegarLoop]: Abstraction has 4643 states and 6722 transitions. [2022-11-03 02:27:02,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-03 02:27:02,638 INFO L276 IsEmpty]: Start isEmpty. Operand 4643 states and 6722 transitions. [2022-11-03 02:27:02,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2022-11-03 02:27:02,671 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:02,672 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 10, 7, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:27:02,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:27:02,672 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:02,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:02,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1147136686, now seen corresponding path program 1 times [2022-11-03 02:27:02,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:27:02,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77284816] [2022-11-03 02:27:02,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:02,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:27:02,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:02,932 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:27:02,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77284816] [2022-11-03 02:27:02,933 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-03 02:27:02,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093211070] [2022-11-03 02:27:02,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:02,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:27:02,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:27:02,938 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:27:02,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:27:04,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:04,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 3996 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:27:04,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:04,381 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2022-11-03 02:27:04,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:27:04,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093211070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:04,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:04,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:27:04,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441332976] [2022-11-03 02:27:04,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:04,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:27:04,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:27:04,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:27:04,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:27:04,385 INFO L87 Difference]: Start difference. First operand 4643 states and 6722 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (69), 2 states have call predecessors, (69), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2022-11-03 02:27:06,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:06,714 INFO L93 Difference]: Finished difference Result 13005 states and 18830 transitions. [2022-11-03 02:27:06,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:27:06,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (69), 2 states have call predecessors, (69), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) Word has length 358 [2022-11-03 02:27:06,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:06,796 INFO L225 Difference]: With dead ends: 13005 [2022-11-03 02:27:06,797 INFO L226 Difference]: Without dead ends: 8384 [2022-11-03 02:27:06,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:27:06,826 INFO L413 NwaCegarLoop]: 1818 mSDtfsCounter, 1387 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1387 SdHoareTripleChecker+Valid, 3221 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:06,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1387 Valid, 3221 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-03 02:27:06,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8384 states. [2022-11-03 02:27:07,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8384 to 8355. [2022-11-03 02:27:07,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8355 states, 4979 states have (on average 1.287407109861418) internal successors, (6410), 5139 states have internal predecessors, (6410), 2799 states have call successors, (2799), 577 states have call predecessors, (2799), 576 states have return successors, (2820), 2754 states have call predecessors, (2820), 2798 states have call successors, (2820) [2022-11-03 02:27:07,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8355 states to 8355 states and 12029 transitions. [2022-11-03 02:27:07,421 INFO L78 Accepts]: Start accepts. Automaton has 8355 states and 12029 transitions. Word has length 358 [2022-11-03 02:27:07,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:07,421 INFO L495 AbstractCegarLoop]: Abstraction has 8355 states and 12029 transitions. [2022-11-03 02:27:07,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (69), 2 states have call predecessors, (69), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2022-11-03 02:27:07,423 INFO L276 IsEmpty]: Start isEmpty. Operand 8355 states and 12029 transitions. [2022-11-03 02:27:07,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2022-11-03 02:27:07,450 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:07,451 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 10, 7, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:27:07,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:27:07,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:27:07,669 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:07,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:07,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1758715457, now seen corresponding path program 1 times [2022-11-03 02:27:07,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:27:07,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507471841] [2022-11-03 02:27:07,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:07,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:27:07,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:08,120 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:27:08,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507471841] [2022-11-03 02:27:08,121 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-03 02:27:08,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891844139] [2022-11-03 02:27:08,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:08,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:27:08,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:27:08,127 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:27:08,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:27:09,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:09,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 4235 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:27:09,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:09,868 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2022-11-03 02:27:09,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:27:09,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891844139] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:09,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:09,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:27:09,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138427335] [2022-11-03 02:27:09,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:09,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:27:09,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:27:09,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:27:09,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:27:09,872 INFO L87 Difference]: Start difference. First operand 8355 states and 12029 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (77), 2 states have call predecessors, (77), 2 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) [2022-11-03 02:27:12,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:12,729 INFO L93 Difference]: Finished difference Result 21687 states and 31254 transitions. [2022-11-03 02:27:12,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:27:12,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (77), 2 states have call predecessors, (77), 2 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) Word has length 391 [2022-11-03 02:27:12,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:12,844 INFO L225 Difference]: With dead ends: 21687 [2022-11-03 02:27:12,844 INFO L226 Difference]: Without dead ends: 13354 [2022-11-03 02:27:12,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:27:12,893 INFO L413 NwaCegarLoop]: 2363 mSDtfsCounter, 1373 mSDsluCounter, 1665 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1373 SdHoareTripleChecker+Valid, 3843 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:12,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1373 Valid, 3843 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-03 02:27:12,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13354 states. [2022-11-03 02:27:13,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13354 to 13349. [2022-11-03 02:27:13,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13349 states, 8113 states have (on average 1.29927277209417) internal successors, (10541), 8329 states have internal predecessors, (10541), 4323 states have call successors, (4323), 913 states have call predecessors, (4323), 912 states have return successors, (4350), 4266 states have call predecessors, (4350), 4322 states have call successors, (4350) [2022-11-03 02:27:13,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13349 states to 13349 states and 19214 transitions. [2022-11-03 02:27:13,987 INFO L78 Accepts]: Start accepts. Automaton has 13349 states and 19214 transitions. Word has length 391 [2022-11-03 02:27:13,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:13,988 INFO L495 AbstractCegarLoop]: Abstraction has 13349 states and 19214 transitions. [2022-11-03 02:27:13,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (77), 2 states have call predecessors, (77), 2 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) [2022-11-03 02:27:13,989 INFO L276 IsEmpty]: Start isEmpty. Operand 13349 states and 19214 transitions. [2022-11-03 02:27:14,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2022-11-03 02:27:14,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:14,029 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 10, 7, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:27:14,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:27:14,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:27:14,243 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:14,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:14,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1655344426, now seen corresponding path program 1 times [2022-11-03 02:27:14,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:27:14,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869338612] [2022-11-03 02:27:14,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:14,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:27:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:14,553 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:27:14,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869338612] [2022-11-03 02:27:14,554 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-03 02:27:14,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139788268] [2022-11-03 02:27:14,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:14,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:27:14,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:27:14,556 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:27:14,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:27:16,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:16,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 4400 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:27:16,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:16,408 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2022-11-03 02:27:16,408 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:27:16,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139788268] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:16,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:16,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:27:16,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455985948] [2022-11-03 02:27:16,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:16,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:27:16,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:27:16,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:27:16,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:27:16,412 INFO L87 Difference]: Start difference. First operand 13349 states and 19214 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 3 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (80), 3 states have call predecessors, (80), 3 states have call successors, (80) [2022-11-03 02:27:18,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:18,931 INFO L93 Difference]: Finished difference Result 31939 states and 45892 transitions. [2022-11-03 02:27:18,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:27:18,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 3 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (80), 3 states have call predecessors, (80), 3 states have call successors, (80) Word has length 422 [2022-11-03 02:27:18,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:19,034 INFO L225 Difference]: With dead ends: 31939 [2022-11-03 02:27:19,034 INFO L226 Difference]: Without dead ends: 18628 [2022-11-03 02:27:19,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:27:19,093 INFO L413 NwaCegarLoop]: 2361 mSDtfsCounter, 1544 mSDsluCounter, 1503 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 3704 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:19,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1544 Valid, 3704 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-03 02:27:19,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18628 states. [2022-11-03 02:27:20,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18628 to 18579. [2022-11-03 02:27:20,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18579 states, 11363 states have (on average 1.302912963125935) internal successors, (14805), 11631 states have internal predecessors, (14805), 5905 states have call successors, (5905), 1311 states have call predecessors, (5905), 1310 states have return successors, (5938), 5836 states have call predecessors, (5938), 5904 states have call successors, (5938) [2022-11-03 02:27:20,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18579 states to 18579 states and 26648 transitions. [2022-11-03 02:27:20,594 INFO L78 Accepts]: Start accepts. Automaton has 18579 states and 26648 transitions. Word has length 422 [2022-11-03 02:27:20,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:20,596 INFO L495 AbstractCegarLoop]: Abstraction has 18579 states and 26648 transitions. [2022-11-03 02:27:20,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 3 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (80), 3 states have call predecessors, (80), 3 states have call successors, (80) [2022-11-03 02:27:20,596 INFO L276 IsEmpty]: Start isEmpty. Operand 18579 states and 26648 transitions. [2022-11-03 02:27:20,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2022-11-03 02:27:20,651 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:20,652 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 10, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:27:20,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:27:20,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:27:20,867 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:20,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:20,868 INFO L85 PathProgramCache]: Analyzing trace with hash -73399705, now seen corresponding path program 1 times [2022-11-03 02:27:20,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:27:20,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179561142] [2022-11-03 02:27:20,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:20,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:27:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:21,522 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:27:21,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179561142] [2022-11-03 02:27:21,523 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-03 02:27:21,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087515863] [2022-11-03 02:27:21,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:21,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:27:21,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:27:21,525 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:27:21,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:27:23,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:23,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 4532 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:27:23,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:23,387 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-11-03 02:27:23,388 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:27:23,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087515863] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:23,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:23,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:27:23,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228674546] [2022-11-03 02:27:23,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:23,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:27:23,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:27:23,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:27:23,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:27:23,395 INFO L87 Difference]: Start difference. First operand 18579 states and 26648 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 2 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) [2022-11-03 02:27:26,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:26,382 INFO L93 Difference]: Finished difference Result 38384 states and 55282 transitions. [2022-11-03 02:27:26,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:27:26,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 2 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) Word has length 442 [2022-11-03 02:27:26,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:26,515 INFO L225 Difference]: With dead ends: 38384 [2022-11-03 02:27:26,515 INFO L226 Difference]: Without dead ends: 19843 [2022-11-03 02:27:26,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:27:26,602 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 51 mSDsluCounter, 1725 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 3135 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:26,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 3135 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-03 02:27:26,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19843 states. [2022-11-03 02:27:28,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19843 to 18611. [2022-11-03 02:27:28,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18611 states, 11395 states have (on average 1.3020623080298377) internal successors, (14837), 11663 states have internal predecessors, (14837), 5905 states have call successors, (5905), 1311 states have call predecessors, (5905), 1310 states have return successors, (5938), 5836 states have call predecessors, (5938), 5904 states have call successors, (5938) [2022-11-03 02:27:28,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18611 states to 18611 states and 26680 transitions. [2022-11-03 02:27:28,225 INFO L78 Accepts]: Start accepts. Automaton has 18611 states and 26680 transitions. Word has length 442 [2022-11-03 02:27:28,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:28,228 INFO L495 AbstractCegarLoop]: Abstraction has 18611 states and 26680 transitions. [2022-11-03 02:27:28,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 2 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) [2022-11-03 02:27:28,229 INFO L276 IsEmpty]: Start isEmpty. Operand 18611 states and 26680 transitions. [2022-11-03 02:27:28,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2022-11-03 02:27:28,291 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:28,292 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 10, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:27:28,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:27:28,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:27:28,510 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:28,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:28,510 INFO L85 PathProgramCache]: Analyzing trace with hash 38133282, now seen corresponding path program 1 times [2022-11-03 02:27:28,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:27:28,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895298757] [2022-11-03 02:27:28,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:28,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:27:28,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:28,817 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:27:28,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895298757] [2022-11-03 02:27:28,818 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-03 02:27:28,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949631124] [2022-11-03 02:27:28,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:28,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:27:28,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:27:28,820 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:27:28,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 02:27:30,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:30,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 4665 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:27:30,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:30,779 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 719 trivial. 0 not checked. [2022-11-03 02:27:30,780 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:27:30,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949631124] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:30,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:30,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:27:30,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453840709] [2022-11-03 02:27:30,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:30,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:27:30,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:27:30,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:27:30,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:27:30,785 INFO L87 Difference]: Start difference. First operand 18611 states and 26680 transitions. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 2 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) [2022-11-03 02:27:34,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:34,180 INFO L93 Difference]: Finished difference Result 39440 states and 56866 transitions. [2022-11-03 02:27:34,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:27:34,181 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 2 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) Word has length 443 [2022-11-03 02:27:34,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:34,293 INFO L225 Difference]: With dead ends: 39440 [2022-11-03 02:27:34,293 INFO L226 Difference]: Without dead ends: 20867 [2022-11-03 02:27:34,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:27:34,352 INFO L413 NwaCegarLoop]: 1584 mSDtfsCounter, 103 mSDsluCounter, 3485 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 4689 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:34,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 4689 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-03 02:27:34,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20867 states. [2022-11-03 02:27:35,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20867 to 18643. [2022-11-03 02:27:35,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18643 states, 11427 states have (on average 1.3012164172573728) internal successors, (14869), 11679 states have internal predecessors, (14869), 5905 states have call successors, (5905), 1311 states have call predecessors, (5905), 1310 states have return successors, (5938), 5836 states have call predecessors, (5938), 5904 states have call successors, (5938) [2022-11-03 02:27:35,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18643 states to 18643 states and 26712 transitions. [2022-11-03 02:27:35,986 INFO L78 Accepts]: Start accepts. Automaton has 18643 states and 26712 transitions. Word has length 443 [2022-11-03 02:27:35,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:35,988 INFO L495 AbstractCegarLoop]: Abstraction has 18643 states and 26712 transitions. [2022-11-03 02:27:35,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 2 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) [2022-11-03 02:27:35,988 INFO L276 IsEmpty]: Start isEmpty. Operand 18643 states and 26712 transitions. [2022-11-03 02:27:36,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2022-11-03 02:27:36,064 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:36,065 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 10, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:27:36,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:27:36,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-03 02:27:36,279 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:36,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:36,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1293430768, now seen corresponding path program 1 times [2022-11-03 02:27:36,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:27:36,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107189919] [2022-11-03 02:27:36,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:36,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:27:36,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:36,817 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:27:36,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107189919] [2022-11-03 02:27:36,818 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-03 02:27:36,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228326879] [2022-11-03 02:27:36,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:36,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:27:36,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:27:36,823 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:27:36,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 02:27:38,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:38,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 4667 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:27:38,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:38,751 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2022-11-03 02:27:38,751 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:27:38,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228326879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:38,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:38,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:27:38,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790750670] [2022-11-03 02:27:38,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:38,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:27:38,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:27:38,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:27:38,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:27:38,755 INFO L87 Difference]: Start difference. First operand 18643 states and 26712 transitions. Second operand has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 2 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) [2022-11-03 02:27:41,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:41,900 INFO L93 Difference]: Finished difference Result 37424 states and 53646 transitions. [2022-11-03 02:27:41,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:27:41,901 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 2 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) Word has length 444 [2022-11-03 02:27:41,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:41,990 INFO L225 Difference]: With dead ends: 37424 [2022-11-03 02:27:41,991 INFO L226 Difference]: Without dead ends: 18819 [2022-11-03 02:27:42,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:27:42,052 INFO L413 NwaCegarLoop]: 1532 mSDtfsCounter, 9 mSDsluCounter, 3412 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 4570 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:42,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 4570 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-03 02:27:42,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18819 states. [2022-11-03 02:27:43,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18819 to 18731. [2022-11-03 02:27:43,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18731 states, 11491 states have (on average 1.2995387694717606) internal successors, (14933), 11751 states have internal predecessors, (14933), 5921 states have call successors, (5921), 1311 states have call predecessors, (5921), 1318 states have return successors, (5964), 5852 states have call predecessors, (5964), 5920 states have call successors, (5964) [2022-11-03 02:27:43,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18731 states to 18731 states and 26818 transitions. [2022-11-03 02:27:43,394 INFO L78 Accepts]: Start accepts. Automaton has 18731 states and 26818 transitions. Word has length 444 [2022-11-03 02:27:43,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:43,395 INFO L495 AbstractCegarLoop]: Abstraction has 18731 states and 26818 transitions. [2022-11-03 02:27:43,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 2 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) [2022-11-03 02:27:43,396 INFO L276 IsEmpty]: Start isEmpty. Operand 18731 states and 26818 transitions. [2022-11-03 02:27:43,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2022-11-03 02:27:43,430 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:43,431 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 11, 8, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:27:43,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:27:43,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:27:43,659 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:43,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:43,659 INFO L85 PathProgramCache]: Analyzing trace with hash 715385339, now seen corresponding path program 1 times [2022-11-03 02:27:43,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:27:43,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268164916] [2022-11-03 02:27:43,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:43,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:27:43,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:43,915 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:27:43,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268164916] [2022-11-03 02:27:43,915 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-03 02:27:43,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811062930] [2022-11-03 02:27:43,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:43,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:27:43,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:27:43,919 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:27:43,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 02:27:45,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:45,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 4779 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:27:45,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:45,815 INFO L134 CoverageAnalysis]: Checked inductivity of 927 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2022-11-03 02:27:45,816 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:27:45,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811062930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:45,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:45,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:27:45,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987916508] [2022-11-03 02:27:45,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:45,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:27:45,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:27:45,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:27:45,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:27:45,819 INFO L87 Difference]: Start difference. First operand 18731 states and 26818 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 2 states have call successors, (86), 2 states have call predecessors, (86), 2 states have return successors, (85), 2 states have call predecessors, (85), 2 states have call successors, (85) [2022-11-03 02:27:47,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:47,720 INFO L93 Difference]: Finished difference Result 37440 states and 53648 transitions. [2022-11-03 02:27:47,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:27:47,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 2 states have call successors, (86), 2 states have call predecessors, (86), 2 states have return successors, (85), 2 states have call predecessors, (85), 2 states have call successors, (85) Word has length 457 [2022-11-03 02:27:47,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:47,826 INFO L225 Difference]: With dead ends: 37440 [2022-11-03 02:27:47,826 INFO L226 Difference]: Without dead ends: 18747 [2022-11-03 02:27:48,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:27:48,020 INFO L413 NwaCegarLoop]: 1525 mSDtfsCounter, 0 mSDsluCounter, 1712 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3047 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:48,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3047 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-03 02:27:48,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18747 states. [2022-11-03 02:27:49,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18747 to 18747. [2022-11-03 02:27:49,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18747 states, 11507 states have (on average 1.2991222733988008) internal successors, (14949), 11767 states have internal predecessors, (14949), 5921 states have call successors, (5921), 1311 states have call predecessors, (5921), 1318 states have return successors, (5964), 5852 states have call predecessors, (5964), 5920 states have call successors, (5964) [2022-11-03 02:27:49,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18747 states to 18747 states and 26834 transitions. [2022-11-03 02:27:49,373 INFO L78 Accepts]: Start accepts. Automaton has 18747 states and 26834 transitions. Word has length 457 [2022-11-03 02:27:49,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:49,374 INFO L495 AbstractCegarLoop]: Abstraction has 18747 states and 26834 transitions. [2022-11-03 02:27:49,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 2 states have call successors, (86), 2 states have call predecessors, (86), 2 states have return successors, (85), 2 states have call predecessors, (85), 2 states have call successors, (85) [2022-11-03 02:27:49,375 INFO L276 IsEmpty]: Start isEmpty. Operand 18747 states and 26834 transitions. [2022-11-03 02:27:49,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2022-11-03 02:27:49,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:49,414 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 11, 8, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:27:49,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-03 02:27:49,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:27:49,643 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:49,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:49,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1863273565, now seen corresponding path program 1 times [2022-11-03 02:27:49,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:27:49,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220422265] [2022-11-03 02:27:49,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:49,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:27:49,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:49,963 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:27:49,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220422265] [2022-11-03 02:27:49,964 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-03 02:27:49,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048185605] [2022-11-03 02:27:49,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:49,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:27:49,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:27:49,967 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:27:50,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6c2022-f1e5-4634-8d9f-a4d57dee6ba2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 02:27:52,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:52,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 5103 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:27:52,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:52,208 INFO L134 CoverageAnalysis]: Checked inductivity of 928 backedges. 164 proven. 1 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2022-11-03 02:27:52,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:27:52,828 INFO L134 CoverageAnalysis]: Checked inductivity of 928 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 913 trivial. 0 not checked. [2022-11-03 02:27:52,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048185605] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:27:52,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2015177872] [2022-11-03 02:27:52,857 INFO L159 IcfgInterpreter]: Started Sifa with 281 locations of interest [2022-11-03 02:27:52,857 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:27:52,862 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:27:52,868 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:27:52,868 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:27:57,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:57,858 INFO L244 Elim1Store]: Index analysis took 335 ms [2022-11-03 02:28:33,193 WARN L234 SmtUtils]: Spent 35.25s on a formula simplification. DAG size of input: 1853 DAG size of output: 1011 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 02:28:33,198 INFO L356 Elim1Store]: treesize reduction 3024, result has 33.3 percent of original size [2022-11-03 02:28:33,202 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 171 select indices, 171 select index equivalence classes, 14367 disjoint index pairs (out of 14535 index pairs), introduced 171 new quantified variables, introduced 336 case distinctions, treesize of input 862 treesize of output 2041 [2022-11-03 02:28:35,159 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1271 treesize of output 1003 [2022-11-03 02:28:35,859 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1271 treesize of output 1003 [2022-11-03 02:28:37,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:28:37,207 INFO L244 Elim1Store]: Index analysis took 103 ms [2022-11-03 02:28:37,267 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 169 select indices, 169 select index equivalence classes, 14366 disjoint index pairs (out of 14196 index pairs), introduced 169 new quantified variables, introduced 0 case distinctions, treesize of input 852 treesize of output 1358 [2022-11-03 02:28:50,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:28:50,891 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 170 select indices, 170 select index equivalence classes, 14366 disjoint index pairs (out of 14365 index pairs), introduced 170 new quantified variables, introduced 0 case distinctions, treesize of input 851 treesize of output 511 [2022-11-03 02:28:51,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:28:51,811 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 171 select indices, 171 select index equivalence classes, 14535 disjoint index pairs (out of 14535 index pairs), introduced 171 new quantified variables, introduced 0 case distinctions, treesize of input 856 treesize of output 514 [2022-11-03 02:28:52,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:28:52,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:28:52,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:28:52,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:28:52,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:28:52,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:28:52,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:28:52,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:28:52,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:28:52,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:28:52,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:28:52,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:28:52,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:28:52,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:28:52,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:28:52,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:28:52,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:28:52,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:28:52,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:28:52,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:28:52,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:28:52,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:28:52,583 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 35 select indices, 35 select index equivalence classes, 131 disjoint index pairs (out of 595 index pairs), introduced 35 new quantified variables, introduced 0 case distinctions, treesize of input 284 treesize of output 106 [2022-11-03 02:29:04,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:04,500 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 170 select indices, 170 select index equivalence classes, 14366 disjoint index pairs (out of 14365 index pairs), introduced 170 new quantified variables, introduced 0 case distinctions, treesize of input 851 treesize of output 511 [2022-11-03 02:29:05,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:05,440 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 171 select indices, 171 select index equivalence classes, 14535 disjoint index pairs (out of 14535 index pairs), introduced 171 new quantified variables, introduced 0 case distinctions, treesize of input 856 treesize of output 514 [2022-11-03 02:29:06,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:06,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:06,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:06,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:06,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:06,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:06,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:06,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:06,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:06,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:06,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:06,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:06,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:06,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:06,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:06,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:06,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:06,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:06,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:06,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:06,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:06,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:29:06,078 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 35 select indices, 35 select index equivalence classes, 131 disjoint index pairs (out of 595 index pairs), introduced 35 new quantified variables, introduced 0 case distinctions, treesize of input 284 treesize of output 106