./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.7.3/main17_drivers-gpu-drm-vmwgfx-vmwgfx-ko--32_7a--linux-3.5.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487a2328-0024-4ff6-a1c3-c9da6462f620/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487a2328-0024-4ff6-a1c3-c9da6462f620/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487a2328-0024-4ff6-a1c3-c9da6462f620/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487a2328-0024-4ff6-a1c3-c9da6462f620/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.7.3/main17_drivers-gpu-drm-vmwgfx-vmwgfx-ko--32_7a--linux-3.5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487a2328-0024-4ff6-a1c3-c9da6462f620/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487a2328-0024-4ff6-a1c3-c9da6462f620/bin/uautomizer-DrprNOufMa --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 600276f17a788d89542ab4bc1cb35a7ee9259aa7d76b73bd966dc12f7082896c --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 23:39:04,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 23:39:04,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 23:39:04,346 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 23:39:04,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 23:39:04,348 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 23:39:04,349 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 23:39:04,351 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 23:39:04,353 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 23:39:04,354 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 23:39:04,355 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 23:39:04,357 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 23:39:04,357 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 23:39:04,358 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 23:39:04,360 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 23:39:04,361 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 23:39:04,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 23:39:04,363 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 23:39:04,365 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 23:39:04,367 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 23:39:04,369 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 23:39:04,370 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 23:39:04,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 23:39:04,372 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 23:39:04,376 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 23:39:04,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 23:39:04,377 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 23:39:04,378 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 23:39:04,378 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 23:39:04,379 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 23:39:04,380 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 23:39:04,380 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 23:39:04,381 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 23:39:04,382 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 23:39:04,383 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 23:39:04,383 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 23:39:04,383 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 23:39:04,384 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 23:39:04,384 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 23:39:04,384 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 23:39:04,385 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 23:39:04,385 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487a2328-0024-4ff6-a1c3-c9da6462f620/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-06 23:39:04,408 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 23:39:04,408 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 23:39:04,408 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 23:39:04,408 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 23:39:04,409 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 23:39:04,409 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 23:39:04,409 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 23:39:04,410 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 23:39:04,410 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 23:39:04,410 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 23:39:04,410 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 23:39:04,410 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 23:39:04,410 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 23:39:04,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 23:39:04,411 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 23:39:04,411 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 23:39:04,411 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 23:39:04,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 23:39:04,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 23:39:04,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 23:39:04,412 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 23:39:04,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:39:04,412 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 23:39:04,412 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 23:39:04,412 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 23:39:04,412 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 23:39:04,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 23:39:04,412 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 23:39:04,412 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 23:39:04,413 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 23:39:04,413 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 23:39:04,413 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_487a2328-0024-4ff6-a1c3-c9da6462f620/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487a2328-0024-4ff6-a1c3-c9da6462f620/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 600276f17a788d89542ab4bc1cb35a7ee9259aa7d76b73bd966dc12f7082896c [2021-12-06 23:39:04,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 23:39:04,623 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 23:39:04,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 23:39:04,626 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 23:39:04,626 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 23:39:04,627 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487a2328-0024-4ff6-a1c3-c9da6462f620/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-linux-3.7.3/main17_drivers-gpu-drm-vmwgfx-vmwgfx-ko--32_7a--linux-3.5.i [2021-12-06 23:39:04,675 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487a2328-0024-4ff6-a1c3-c9da6462f620/bin/uautomizer-DrprNOufMa/data/92628cd54/1cba81d6c5f8435e87a8516065943d18/FLAG4b6368f79 [2021-12-06 23:39:05,461 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 23:39:05,462 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487a2328-0024-4ff6-a1c3-c9da6462f620/sv-benchmarks/c/ldv-linux-3.7.3/main17_drivers-gpu-drm-vmwgfx-vmwgfx-ko--32_7a--linux-3.5.i [2021-12-06 23:39:05,505 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487a2328-0024-4ff6-a1c3-c9da6462f620/bin/uautomizer-DrprNOufMa/data/92628cd54/1cba81d6c5f8435e87a8516065943d18/FLAG4b6368f79 [2021-12-06 23:39:05,648 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487a2328-0024-4ff6-a1c3-c9da6462f620/bin/uautomizer-DrprNOufMa/data/92628cd54/1cba81d6c5f8435e87a8516065943d18 [2021-12-06 23:39:05,649 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 23:39:05,650 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 23:39:05,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 23:39:05,651 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 23:39:05,654 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 23:39:05,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:39:05" (1/1) ... [2021-12-06 23:39:05,655 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4876df90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:39:05, skipping insertion in model container [2021-12-06 23:39:05,655 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:39:05" (1/1) ... [2021-12-06 23:39:05,660 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 23:39:05,802 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:39:12,897 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_487a2328-0024-4ff6-a1c3-c9da6462f620/sv-benchmarks/c/ldv-linux-3.7.3/main17_drivers-gpu-drm-vmwgfx-vmwgfx-ko--32_7a--linux-3.5.i[722028,722041] [2021-12-06 23:39:13,338 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:39:13,384 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 23:39:14,099 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_487a2328-0024-4ff6-a1c3-c9da6462f620/sv-benchmarks/c/ldv-linux-3.7.3/main17_drivers-gpu-drm-vmwgfx-vmwgfx-ko--32_7a--linux-3.5.i[722028,722041] [2021-12-06 23:39:14,121 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:39:14,500 INFO L208 MainTranslator]: Completed translation [2021-12-06 23:39:14,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:39:14 WrapperNode [2021-12-06 23:39:14,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 23:39:14,502 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 23:39:14,502 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 23:39:14,502 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 23:39:14,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:39:14" (1/1) ... [2021-12-06 23:39:14,618 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:39:14" (1/1) ... [2021-12-06 23:39:14,834 INFO L137 Inliner]: procedures = 1046, calls = 9656, calls flagged for inlining = 360, calls inlined = 140, statements flattened = 6940 [2021-12-06 23:39:14,835 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 23:39:14,835 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 23:39:14,835 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 23:39:14,836 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 23:39:14,845 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:39:14" (1/1) ... [2021-12-06 23:39:14,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:39:14" (1/1) ... [2021-12-06 23:39:14,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:39:14" (1/1) ... [2021-12-06 23:39:14,890 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:39:14" (1/1) ... [2021-12-06 23:39:15,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:39:14" (1/1) ... [2021-12-06 23:39:15,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:39:14" (1/1) ... [2021-12-06 23:39:15,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:39:14" (1/1) ... [2021-12-06 23:39:15,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 23:39:15,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 23:39:15,191 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 23:39:15,191 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 23:39:15,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:39:14" (1/1) ... [2021-12-06 23:39:15,197 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:39:15,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487a2328-0024-4ff6-a1c3-c9da6462f620/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:39:15,217 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487a2328-0024-4ff6-a1c3-c9da6462f620/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 23:39:15,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_487a2328-0024-4ff6-a1c3-c9da6462f620/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 23:39:15,253 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_dummy_query_bo_prepare [2021-12-06 23:39:15,254 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_dummy_query_bo_prepare [2021-12-06 23:39:15,254 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_framebuffer_dmabuf_destroy [2021-12-06 23:39:15,254 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_framebuffer_dmabuf_destroy [2021-12-06 23:39:15,254 INFO L130 BoogieDeclarations]: Found specification of procedure idr_destroy [2021-12-06 23:39:15,254 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_destroy [2021-12-06 23:39:15,254 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_fence_obj_init [2021-12-06 23:39:15,254 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_fence_obj_init [2021-12-06 23:39:15,254 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2021-12-06 23:39:15,254 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2021-12-06 23:39:15,254 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-12-06 23:39:15,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-12-06 23:39:15,254 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_sou_crtc_set_config [2021-12-06 23:39:15,254 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_sou_crtc_set_config [2021-12-06 23:39:15,255 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_eu_backoff_reservation [2021-12-06 23:39:15,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_eu_backoff_reservation [2021-12-06 23:39:15,255 INFO L130 BoogieDeclarations]: Found specification of procedure drm_mtrr_del [2021-12-06 23:39:15,255 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_mtrr_del [2021-12-06 23:39:15,255 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_overlay_move_buffer [2021-12-06 23:39:15,255 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_overlay_move_buffer [2021-12-06 23:39:15,255 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_firstopen [2021-12-06 23:39:15,255 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_firstopen [2021-12-06 23:39:15,255 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_lastclose [2021-12-06 23:39:15,255 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_lastclose [2021-12-06 23:39:15,255 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_overlay_pause_all [2021-12-06 23:39:15,255 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_overlay_pause_all [2021-12-06 23:39:15,255 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_framebuffer_surface_destroy [2021-12-06 23:39:15,255 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_framebuffer_surface_destroy [2021-12-06 23:39:15,256 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_ldu_destroy [2021-12-06 23:39:15,256 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_ldu_destroy [2021-12-06 23:39:15,256 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-12-06 23:39:15,256 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-12-06 23:39:15,256 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-12-06 23:39:15,256 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-06 23:39:15,256 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-06 23:39:15,256 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-12-06 23:39:15,256 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-12-06 23:39:15,256 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_unreserve [2021-12-06 23:39:15,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_bo_unreserve [2021-12-06 23:39:15,256 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-06 23:39:15,256 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-06 23:39:15,256 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_kmap [2021-12-06 23:39:15,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_bo_kmap [2021-12-06 23:39:15,257 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-06 23:39:15,257 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-06 23:39:15,257 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_sou_backing_free [2021-12-06 23:39:15,257 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_sou_backing_free [2021-12-06 23:39:15,257 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_dmabuf_to_vram_or_gmr [2021-12-06 23:39:15,257 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_dmabuf_to_vram_or_gmr [2021-12-06 23:39:15,257 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_kunmap [2021-12-06 23:39:15,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_bo_kunmap [2021-12-06 23:39:15,257 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2021-12-06 23:39:15,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2021-12-06 23:39:15,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 23:39:15,257 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_ldu_commit_list [2021-12-06 23:39:15,257 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_ldu_commit_list [2021-12-06 23:39:15,257 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_hw_mutex [2021-12-06 23:39:15,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_hw_mutex [2021-12-06 23:39:15,258 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_fifo_emit_dummy_query [2021-12-06 23:39:15,258 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_fifo_emit_dummy_query [2021-12-06 23:39:15,258 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_hw_context_destroy [2021-12-06 23:39:15,258 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_hw_context_destroy [2021-12-06 23:39:15,258 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_ldu_del_active [2021-12-06 23:39:15,258 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_ldu_del_active [2021-12-06 23:39:15,258 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_mem_global_alloc [2021-12-06 23:39:15,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_mem_global_alloc [2021-12-06 23:39:15,268 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_ttm_destroy [2021-12-06 23:39:15,268 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_ttm_destroy [2021-12-06 23:39:15,268 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-12-06 23:39:15,268 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-12-06 23:39:15,268 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_resource_release [2021-12-06 23:39:15,268 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_resource_release [2021-12-06 23:39:15,269 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_base_object_init [2021-12-06 23:39:15,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_base_object_init [2021-12-06 23:39:15,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 23:39:15,269 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_seqno_waiter_add [2021-12-06 23:39:15,269 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_seqno_waiter_add [2021-12-06 23:39:15,269 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_pm_complete [2021-12-06 23:39:15,269 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_pm_complete [2021-12-06 23:39:15,269 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_ldu_crtc_destroy [2021-12-06 23:39:15,269 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_ldu_crtc_destroy [2021-12-06 23:39:15,269 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-12-06 23:39:15,269 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-12-06 23:39:15,269 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_dma_buffer [2021-12-06 23:39:15,270 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_dma_buffer [2021-12-06 23:39:15,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 23:39:15,270 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_cursor_update_image [2021-12-06 23:39:15,270 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_cursor_update_image [2021-12-06 23:39:15,270 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_display_unit_cleanup [2021-12-06 23:39:15,270 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_display_unit_cleanup [2021-12-06 23:39:15,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 23:39:15,270 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-06 23:39:15,270 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_sou_destroy [2021-12-06 23:39:15,270 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_sou_destroy [2021-12-06 23:39:15,270 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_user_context_base_release [2021-12-06 23:39:15,270 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_user_context_base_release [2021-12-06 23:39:15,271 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_seqno_passed [2021-12-06 23:39:15,271 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_seqno_passed [2021-12-06 23:39:15,271 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-12-06 23:39:15,271 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-12-06 23:39:15,271 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_fifo_have_pitchlock [2021-12-06 23:39:15,271 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_fifo_have_pitchlock [2021-12-06 23:39:15,271 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-12-06 23:39:15,271 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-12-06 23:39:15,271 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_stream_destroy [2021-12-06 23:39:15,271 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_stream_destroy [2021-12-06 23:39:15,271 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-06 23:39:15,271 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-06 23:39:15,271 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_write [2021-12-06 23:39:15,272 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_write [2021-12-06 23:39:15,272 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex [2021-12-06 23:39:15,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex [2021-12-06 23:39:15,272 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_fifo_wait [2021-12-06 23:39:15,272 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_fifo_wait [2021-12-06 23:39:15,272 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_kms_close [2021-12-06 23:39:15,272 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_kms_close [2021-12-06 23:39:15,272 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-12-06 23:39:15,272 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-12-06 23:39:15,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 23:39:15,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 23:39:15,272 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_kms_write_svga [2021-12-06 23:39:15,273 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_kms_write_svga [2021-12-06 23:39:15,273 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_release_mutex [2021-12-06 23:39:15,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_release_mutex [2021-12-06 23:39:15,273 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_fifo_init [2021-12-06 23:39:15,273 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_fifo_init [2021-12-06 23:39:15,273 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_fallback_wait [2021-12-06 23:39:15,273 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_fallback_wait [2021-12-06 23:39:15,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-06 23:39:15,273 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_fence_obj_reference [2021-12-06 23:39:15,273 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_fence_obj_reference [2021-12-06 23:39:15,273 INFO L130 BoogieDeclarations]: Found specification of procedure framebuffer_release [2021-12-06 23:39:15,273 INFO L138 BoogieDeclarations]: Found implementation of procedure framebuffer_release [2021-12-06 23:39:15,274 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_hw_surface_destroy [2021-12-06 23:39:15,274 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_hw_surface_destroy [2021-12-06 23:39:15,274 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-06 23:39:15,274 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-06 23:39:15,274 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2021-12-06 23:39:15,274 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2021-12-06 23:39:15,274 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_fifo_reserve [2021-12-06 23:39:15,274 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_fifo_reserve [2021-12-06 23:39:15,274 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-06 23:39:15,274 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-06 23:39:15,274 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_fb_off [2021-12-06 23:39:15,274 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_fb_off [2021-12-06 23:39:15,275 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-06 23:39:15,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-06 23:39:15,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-06 23:39:15,275 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-06 23:39:15,275 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_write_lock [2021-12-06 23:39:15,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_write_lock [2021-12-06 23:39:15,275 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_3d_resource_dec [2021-12-06 23:39:15,275 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_3d_resource_dec [2021-12-06 23:39:15,275 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-06 23:39:15,275 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-06 23:39:15,275 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_device_release [2021-12-06 23:39:15,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_bo_device_release [2021-12-06 23:39:15,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 23:39:15,276 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-06 23:39:15,276 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-06 23:39:15,276 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_global_release [2021-12-06 23:39:15,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 23:39:15,276 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del_entry [2021-12-06 23:39:15,276 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del_entry [2021-12-06 23:39:15,276 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2021-12-06 23:39:15,276 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2021-12-06 23:39:15,276 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_ttm_global_release [2021-12-06 23:39:15,276 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_ttm_global_release [2021-12-06 23:39:15,276 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-06 23:39:15,276 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-06 23:39:15,276 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-06 23:39:15,276 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-06 23:39:15,277 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-06 23:39:15,277 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-06 23:39:15,277 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_ldu_add_active [2021-12-06 23:39:15,277 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_ldu_add_active [2021-12-06 23:39:15,277 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_fpriv [2021-12-06 23:39:15,277 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_fpriv [2021-12-06 23:39:15,277 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2021-12-06 23:39:15,277 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2021-12-06 23:39:15,277 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_eu_reserve_buffers [2021-12-06 23:39:15,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_eu_reserve_buffers [2021-12-06 23:39:15,277 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_kmap_obj_virtual [2021-12-06 23:39:15,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_kmap_obj_virtual [2021-12-06 23:39:15,277 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_dmabuf_to_start_of_vram [2021-12-06 23:39:15,278 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_dmabuf_to_start_of_vram [2021-12-06 23:39:15,278 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-12-06 23:39:15,278 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-12-06 23:39:15,278 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_fb_set_par [2021-12-06 23:39:15,278 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_fb_set_par [2021-12-06 23:39:15,278 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_pool_populate [2021-12-06 23:39:15,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_cmdbuf_mutex [2021-12-06 23:39:15,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_cmdbuf_mutex [2021-12-06 23:39:15,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_cmdbuf_mutex [2021-12-06 23:39:15,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_cmdbuf_mutex [2021-12-06 23:39:15,278 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_sou_crtc_destroy [2021-12-06 23:39:15,278 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_sou_crtc_destroy [2021-12-06 23:39:15,278 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_clean_mm [2021-12-06 23:39:15,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_bo_clean_mm [2021-12-06 23:39:15,279 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_overlay_send_stop [2021-12-06 23:39:15,279 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_overlay_send_stop [2021-12-06 23:39:15,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 23:39:15,279 INFO L130 BoogieDeclarations]: Found specification of procedure drm_vblank_cleanup [2021-12-06 23:39:15,279 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_vblank_cleanup [2021-12-06 23:39:15,279 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-12-06 23:39:15,279 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-12-06 23:39:15,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-06 23:39:15,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-06 23:39:15,279 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_unref [2021-12-06 23:39:15,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_bo_unref [2021-12-06 23:39:15,279 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_create [2021-12-06 23:39:15,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_bo_create [2021-12-06 23:39:15,280 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_resource_unreference [2021-12-06 23:39:15,280 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_resource_unreference [2021-12-06 23:39:15,280 INFO L130 BoogieDeclarations]: Found specification of procedure kref_init [2021-12-06 23:39:15,280 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_init [2021-12-06 23:39:15,280 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_bo_get_guest_ptr [2021-12-06 23:39:15,280 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_bo_get_guest_ptr [2021-12-06 23:39:15,280 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_dmabuf_to_placement [2021-12-06 23:39:15,280 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_dmabuf_to_placement [2021-12-06 23:39:15,280 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-06 23:39:15,280 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-06 23:39:15,280 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_fences_update [2021-12-06 23:39:15,280 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_fences_update [2021-12-06 23:39:15,281 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_sync_obj_unref [2021-12-06 23:39:15,281 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_sync_obj_unref [2021-12-06 23:39:15,281 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_ldu_crtc_set_config [2021-12-06 23:39:15,281 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_ldu_crtc_set_config [2021-12-06 23:39:15,281 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-12-06 23:39:15,281 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-12-06 23:39:15,281 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-12-06 23:39:15,281 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-12-06 23:39:15,281 INFO L130 BoogieDeclarations]: Found specification of procedure idr_remove [2021-12-06 23:39:15,281 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_remove [2021-12-06 23:39:15,281 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_fifo_is_full [2021-12-06 23:39:15,281 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_fifo_is_full [2021-12-06 23:39:15,281 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_overlay_send_put [2021-12-06 23:39:15,281 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_overlay_send_put [2021-12-06 23:39:15,282 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_marker_pull [2021-12-06 23:39:15,282 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_marker_pull [2021-12-06 23:39:15,282 INFO L130 BoogieDeclarations]: Found specification of procedure fb_deferred_io_cleanup [2021-12-06 23:39:15,282 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_deferred_io_cleanup [2021-12-06 23:39:15,282 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-12-06 23:39:15,282 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-12-06 23:39:15,282 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_update_seqno [2021-12-06 23:39:15,282 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_update_seqno [2021-12-06 23:39:15,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_fb_surf_mutex [2021-12-06 23:39:15,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_fb_surf_mutex [2021-12-06 23:39:15,282 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-12-06 23:39:15,282 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-12-06 23:39:15,282 INFO L130 BoogieDeclarations]: Found specification of procedure getrawmonotonic [2021-12-06 23:39:15,282 INFO L138 BoogieDeclarations]: Found implementation of procedure getrawmonotonic [2021-12-06 23:39:15,283 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_fences_perform_actions [2021-12-06 23:39:15,283 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_fences_perform_actions [2021-12-06 23:39:15,283 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_ldu_encoder_destroy [2021-12-06 23:39:15,283 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_ldu_encoder_destroy [2021-12-06 23:39:15,283 INFO L130 BoogieDeclarations]: Found specification of procedure fill_flush [2021-12-06 23:39:15,283 INFO L138 BoogieDeclarations]: Found implementation of procedure fill_flush [2021-12-06 23:39:15,283 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock [2021-12-06 23:39:15,283 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock [2021-12-06 23:39:15,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-06 23:39:15,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-06 23:39:15,283 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_dmabuf_unreference [2021-12-06 23:39:15,283 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_dmabuf_unreference [2021-12-06 23:39:15,283 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_surface_unreference [2021-12-06 23:39:15,284 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_surface_unreference [2021-12-06 23:39:15,284 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_eu_fence_buffer_objects [2021-12-06 23:39:15,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_eu_fence_buffer_objects [2021-12-06 23:39:15,284 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_fifo_mutex [2021-12-06 23:39:15,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_fifo_mutex [2021-12-06 23:39:15,284 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-06 23:39:15,284 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-06 23:39:15,284 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_fence_obj_wait [2021-12-06 23:39:15,284 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_fence_obj_wait [2021-12-06 23:39:15,284 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_pm_prepare [2021-12-06 23:39:15,284 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_pm_prepare [2021-12-06 23:39:15,284 INFO L130 BoogieDeclarations]: Found specification of procedure drm_master_put [2021-12-06 23:39:15,285 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_master_put [2021-12-06 23:39:15,285 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-12-06 23:39:15,285 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-12-06 23:39:15,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_goal_irq_mutex [2021-12-06 23:39:15,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_goal_irq_mutex [2021-12-06 23:39:15,285 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_bo_pin [2021-12-06 23:39:15,285 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_bo_pin [2021-12-06 23:39:15,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 23:39:15,285 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-12-06 23:39:15,285 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-12-06 23:39:15,285 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_dmabuf_init [2021-12-06 23:39:15,285 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_dmabuf_init [2021-12-06 23:39:15,285 INFO L130 BoogieDeclarations]: Found specification of procedure timespec_sub [2021-12-06 23:39:15,285 INFO L138 BoogieDeclarations]: Found implementation of procedure timespec_sub [2021-12-06 23:39:15,286 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_overlay_close [2021-12-06 23:39:15,286 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_overlay_close [2021-12-06 23:39:15,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-06 23:39:15,286 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_pm_resume [2021-12-06 23:39:15,286 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_pm_resume [2021-12-06 23:39:15,286 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-06 23:39:15,286 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-06 23:39:15,286 INFO L130 BoogieDeclarations]: Found specification of procedure drm_global_item_unref [2021-12-06 23:39:15,286 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_global_item_unref [2021-12-06 23:39:15,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-06 23:39:15,286 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_fb_close [2021-12-06 23:39:15,286 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_fb_close [2021-12-06 23:39:15,286 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_ttm_unbind [2021-12-06 23:39:15,286 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_ttm_unbind [2021-12-06 23:39:15,287 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2021-12-06 23:39:15,287 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2021-12-06 23:39:15,287 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_pm_suspend [2021-12-06 23:39:15,287 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_pm_suspend [2021-12-06 23:39:15,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-06 23:39:15,287 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-06 23:39:15,287 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_dmabuf_unpin [2021-12-06 23:39:15,287 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_dmabuf_unpin [2021-12-06 23:39:15,287 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_kms_restore_vga [2021-12-06 23:39:15,287 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_kms_restore_vga [2021-12-06 23:39:15,287 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_request_device [2021-12-06 23:39:15,287 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_request_device [2021-12-06 23:39:15,287 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_fence_obj_unreference [2021-12-06 23:39:15,288 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_fence_obj_unreference [2021-12-06 23:39:15,288 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2021-12-06 23:39:15,288 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2021-12-06 23:39:15,288 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-12-06 23:39:15,288 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-12-06 23:39:15,288 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex [2021-12-06 23:39:15,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex [2021-12-06 23:39:15,288 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_overlay_unref [2021-12-06 23:39:15,288 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_overlay_unref [2021-12-06 23:39:15,288 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_fence_fifo_down [2021-12-06 23:39:15,288 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_fence_fifo_down [2021-12-06 23:39:15,288 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_ldu_connector_destroy [2021-12-06 23:39:15,288 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_ldu_connector_destroy [2021-12-06 23:39:15,288 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_read [2021-12-06 23:39:15,288 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_read [2021-12-06 23:39:15,289 INFO L130 BoogieDeclarations]: Found specification of procedure list_splice_init [2021-12-06 23:39:15,289 INFO L138 BoogieDeclarations]: Found implementation of procedure list_splice_init [2021-12-06 23:39:15,289 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-06 23:39:15,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-06 23:39:15,289 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-06 23:39:15,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-06 23:39:15,289 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_fence_obj_destroy_locked [2021-12-06 23:39:15,289 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_fence_obj_destroy_locked [2021-12-06 23:39:15,289 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_sou_fifo_destroy [2021-12-06 23:39:15,289 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_sou_fifo_destroy [2021-12-06 23:39:15,290 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_pool_unpopulate [2021-12-06 23:39:15,290 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_seqno_waiter_remove [2021-12-06 23:39:15,290 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_seqno_waiter_remove [2021-12-06 23:39:15,290 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_user_stream_base_release [2021-12-06 23:39:15,290 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_user_stream_base_release [2021-12-06 23:39:15,290 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_release_device [2021-12-06 23:39:15,290 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_release_device [2021-12-06 23:39:15,290 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_validate [2021-12-06 23:39:15,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_bo_validate [2021-12-06 23:39:15,290 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_driver_unload [2021-12-06 23:39:15,290 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_driver_unload [2021-12-06 23:39:15,290 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_fb_surf_mutex [2021-12-06 23:39:15,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_fb_surf_mutex [2021-12-06 23:39:15,290 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-12-06 23:39:15,291 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-12-06 23:39:15,291 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2021-12-06 23:39:15,291 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2021-12-06 23:39:15,291 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_mem_global_free [2021-12-06 23:39:15,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_mem_global_free [2021-12-06 23:39:15,291 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_write_unlock [2021-12-06 23:39:15,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_write_unlock [2021-12-06 23:39:15,291 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-12-06 23:39:15,291 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-12-06 23:39:15,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-06 23:39:15,291 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_surface_destroy_encode [2021-12-06 23:39:15,291 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_surface_destroy_encode [2021-12-06 23:39:15,291 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_fence_work_func [2021-12-06 23:39:15,291 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_fence_work_func [2021-12-06 23:39:15,292 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_overlay_update_stream [2021-12-06 23:39:15,292 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_overlay_update_stream [2021-12-06 23:39:15,292 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_reference [2021-12-06 23:39:15,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_bo_reference [2021-12-06 23:39:15,292 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_region [2021-12-06 23:39:15,292 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_region [2021-12-06 23:39:15,292 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_sou_connector_destroy [2021-12-06 23:39:15,292 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_sou_connector_destroy [2021-12-06 23:39:15,292 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_sou_encoder_destroy [2021-12-06 23:39:15,292 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_sou_encoder_destroy [2021-12-06 23:39:15,292 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_cursor_update_dmabuf [2021-12-06 23:39:15,292 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_cursor_update_dmabuf [2021-12-06 23:39:15,292 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-12-06 23:39:15,293 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-12-06 23:39:15,293 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 23:39:15,293 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 23:39:15,293 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_framebuffer_dmabuf_unpin [2021-12-06 23:39:15,293 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_framebuffer_dmabuf_unpin [2021-12-06 23:39:15,293 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_user_fence_base_release [2021-12-06 23:39:15,293 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_user_fence_base_release [2021-12-06 23:39:15,293 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~uint32_t~0~TO~~bool~0 [2021-12-06 23:39:15,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~uint32_t~0~TO~~bool~0 [2021-12-06 23:39:15,293 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-12-06 23:39:15,293 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-12-06 23:39:15,293 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_release_mutex [2021-12-06 23:39:15,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_release_mutex [2021-12-06 23:39:15,294 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_3d_resource_inc [2021-12-06 23:39:15,294 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_3d_resource_inc [2021-12-06 23:39:15,294 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_overlay_stop [2021-12-06 23:39:15,294 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_overlay_stop [2021-12-06 23:39:15,294 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_priv [2021-12-06 23:39:15,294 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_priv [2021-12-06 23:39:15,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 23:39:15,294 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_goal_irq_mutex [2021-12-06 23:39:15,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_goal_irq_mutex [2021-12-06 23:39:15,294 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_fifo_commit [2021-12-06 23:39:15,294 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_fifo_commit [2021-12-06 23:39:15,294 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_global_init [2021-12-06 23:39:15,294 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-12-06 23:39:15,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-12-06 23:39:15,295 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_hw_mutex [2021-12-06 23:39:15,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_hw_mutex [2021-12-06 23:39:15,295 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_event_fence_action_cleanup [2021-12-06 23:39:15,295 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_event_fence_action_cleanup [2021-12-06 23:39:15,295 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_execbuf_unpin_panic [2021-12-06 23:39:15,295 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_execbuf_unpin_panic [2021-12-06 23:39:15,295 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_sou_backing_alloc [2021-12-06 23:39:15,295 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_sou_backing_alloc [2021-12-06 23:39:15,295 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_fence_obj_signaled [2021-12-06 23:39:15,295 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_fence_obj_signaled [2021-12-06 23:39:15,295 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_overlay_resume_all [2021-12-06 23:39:15,295 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_overlay_resume_all [2021-12-06 23:39:15,295 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_reserve [2021-12-06 23:39:15,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_bo_reserve [2021-12-06 23:39:15,296 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_fifo_idle [2021-12-06 23:39:15,296 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_fifo_idle [2021-12-06 23:39:15,296 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_dmabuf_reference [2021-12-06 23:39:15,296 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_dmabuf_reference [2021-12-06 23:39:15,296 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-06 23:39:15,296 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-06 23:39:15,296 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_base_object_unref [2021-12-06 23:39:15,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_base_object_unref [2021-12-06 23:39:15,296 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_master [2021-12-06 23:39:15,296 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_master [2021-12-06 23:39:15,296 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_user_fence_create [2021-12-06 23:39:15,296 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_user_fence_create [2021-12-06 23:39:15,296 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_dmabuf_to_vram [2021-12-06 23:39:15,296 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_dmabuf_to_vram [2021-12-06 23:39:15,296 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_remove [2021-12-06 23:39:15,297 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_remove [2021-12-06 23:39:15,297 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_surface_destroy_size [2021-12-06 23:39:15,297 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_surface_destroy_size [2021-12-06 23:39:15,297 INFO L130 BoogieDeclarations]: Found specification of procedure drm_framebuffer_cleanup [2021-12-06 23:39:15,297 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_framebuffer_cleanup [2021-12-06 23:39:15,297 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_framebuffer_dmabuf_pin [2021-12-06 23:39:15,297 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_framebuffer_dmabuf_pin [2021-12-06 23:39:15,297 INFO L130 BoogieDeclarations]: Found specification of procedure vmalloc [2021-12-06 23:39:15,297 INFO L138 BoogieDeclarations]: Found implementation of procedure vmalloc [2021-12-06 23:39:15,297 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock [2021-12-06 23:39:15,297 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock [2021-12-06 23:39:15,297 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_user_surface_base_release [2021-12-06 23:39:15,297 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_user_surface_base_release [2021-12-06 23:39:15,297 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_mem_glob [2021-12-06 23:39:15,298 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_mem_glob [2021-12-06 23:39:15,298 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_execbuf_fence_commands [2021-12-06 23:39:15,298 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_execbuf_fence_commands [2021-12-06 23:39:15,298 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_fifo_ping_host [2021-12-06 23:39:15,298 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_fifo_ping_host [2021-12-06 23:39:15,298 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_object_device_release [2021-12-06 23:39:15,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_object_device_release [2021-12-06 23:39:15,298 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_fifo_release [2021-12-06 23:39:15,298 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_fifo_release [2021-12-06 23:39:15,298 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add_return [2021-12-06 23:39:15,298 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add_return [2021-12-06 23:39:15,298 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_fifo_send_fence [2021-12-06 23:39:15,298 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_fifo_send_fence [2021-12-06 23:39:15,298 INFO L130 BoogieDeclarations]: Found specification of procedure fill_escape [2021-12-06 23:39:15,298 INFO L138 BoogieDeclarations]: Found implementation of procedure fill_escape [2021-12-06 23:39:15,299 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_fence_manager_takedown [2021-12-06 23:39:15,299 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_fence_manager_takedown [2021-12-06 23:39:15,299 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-06 23:39:15,299 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-06 23:39:15,299 INFO L130 BoogieDeclarations]: Found specification of procedure vmw_execbuf_release_pinned_bo [2021-12-06 23:39:15,299 INFO L138 BoogieDeclarations]: Found implementation of procedure vmw_execbuf_release_pinned_bo [2021-12-06 23:39:15,299 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2021-12-06 23:39:15,299 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2021-12-06 23:39:15,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 23:39:15,299 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-12-06 23:39:15,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-12-06 23:39:15,299 INFO L130 BoogieDeclarations]: Found specification of procedure ns_to_timespec [2021-12-06 23:39:15,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_to_timespec [2021-12-06 23:39:15,932 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 23:39:15,936 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 23:40:02,024 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 23:40:02,045 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 23:40:02,045 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 23:40:02,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:40:02 BoogieIcfgContainer [2021-12-06 23:40:02,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 23:40:02,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 23:40:02,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 23:40:02,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 23:40:02,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 11:39:05" (1/3) ... [2021-12-06 23:40:02,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f396d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:40:02, skipping insertion in model container [2021-12-06 23:40:02,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:39:14" (2/3) ... [2021-12-06 23:40:02,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f396d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:40:02, skipping insertion in model container [2021-12-06 23:40:02,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:40:02" (3/3) ... [2021-12-06 23:40:02,056 INFO L111 eAbstractionObserver]: Analyzing ICFG main17_drivers-gpu-drm-vmwgfx-vmwgfx-ko--32_7a--linux-3.5.i [2021-12-06 23:40:02,059 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 23:40:02,059 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 23:40:02,101 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:40:02,106 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 23:40:02,106 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 23:40:02,163 INFO L276 IsEmpty]: Start isEmpty. Operand has 3067 states, 1875 states have (on average 1.2597333333333334) internal successors, (2362), 1994 states have internal predecessors, (2362), 960 states have call successors, (960), 230 states have call predecessors, (960), 230 states have return successors, (960), 931 states have call predecessors, (960), 960 states have call successors, (960) [2021-12-06 23:40:02,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 23:40:02,167 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:40:02,167 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:40:02,168 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:40:02,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:40:02,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1840002574, now seen corresponding path program 1 times [2021-12-06 23:40:02,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:40:02,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607917551] [2021-12-06 23:40:02,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:40:02,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:40:02,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:40:02,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:40:02,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:40:02,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:40:02,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:40:02,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607917551] [2021-12-06 23:40:02,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607917551] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:40:02,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:40:02,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:40:02,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444842543] [2021-12-06 23:40:02,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:40:02,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:40:02,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:40:02,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:40:02,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:40:02,985 INFO L87 Difference]: Start difference. First operand has 3067 states, 1875 states have (on average 1.2597333333333334) internal successors, (2362), 1994 states have internal predecessors, (2362), 960 states have call successors, (960), 230 states have call predecessors, (960), 230 states have return successors, (960), 931 states have call predecessors, (960), 960 states have call successors, (960) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 23:40:05,180 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:40:12,455 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:40:16,454 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:40:20,455 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:40:22,515 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:40:27,172 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:40:32,310 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:40:52,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:40:52,605 INFO L93 Difference]: Finished difference Result 10119 states and 14965 transitions. [2021-12-06 23:40:52,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:40:52,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-12-06 23:40:52,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:40:52,669 INFO L225 Difference]: With dead ends: 10119 [2021-12-06 23:40:52,669 INFO L226 Difference]: Without dead ends: 6997 [2021-12-06 23:40:52,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:40:52,700 INFO L933 BasicCegarLoop]: 4448 mSDtfsCounter, 6709 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 7379 mSolverCounterSat, 3806 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7538 SdHoareTripleChecker+Valid, 5540 SdHoareTripleChecker+Invalid, 11191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3806 IncrementalHoareTripleChecker+Valid, 7379 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.5s IncrementalHoareTripleChecker+Time [2021-12-06 23:40:52,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7538 Valid, 5540 Invalid, 11191 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3806 Valid, 7379 Invalid, 6 Unknown, 0 Unchecked, 48.5s Time] [2021-12-06 23:40:52,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6997 states. [2021-12-06 23:40:53,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6997 to 6454. [2021-12-06 23:40:53,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6454 states, 3944 states have (on average 1.2423935091277891) internal successors, (4900), 4165 states have internal predecessors, (4900), 1995 states have call successors, (1995), 452 states have call predecessors, (1995), 514 states have return successors, (2237), 1966 states have call predecessors, (2237), 1967 states have call successors, (2237) [2021-12-06 23:40:53,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6454 states to 6454 states and 9132 transitions. [2021-12-06 23:40:53,204 INFO L78 Accepts]: Start accepts. Automaton has 6454 states and 9132 transitions. Word has length 12 [2021-12-06 23:40:53,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:40:53,205 INFO L470 AbstractCegarLoop]: Abstraction has 6454 states and 9132 transitions. [2021-12-06 23:40:53,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 23:40:53,205 INFO L276 IsEmpty]: Start isEmpty. Operand 6454 states and 9132 transitions. [2021-12-06 23:40:53,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-06 23:40:53,206 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:40:53,206 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:40:53,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 23:40:53,206 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:40:53,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:40:53,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1203679267, now seen corresponding path program 1 times [2021-12-06 23:40:53,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:40:53,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892612358] [2021-12-06 23:40:53,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:40:53,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:40:53,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:40:53,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:40:53,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:40:53,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:40:53,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:40:53,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892612358] [2021-12-06 23:40:53,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892612358] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:40:53,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:40:53,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:40:53,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918846067] [2021-12-06 23:40:53,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:40:53,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:40:53,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:40:53,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:40:53,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:40:53,660 INFO L87 Difference]: Start difference. First operand 6454 states and 9132 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 23:40:55,438 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:40:57,459 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:41:04,614 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:41:08,246 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:41:12,395 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:41:14,104 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:41:17,098 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:41:22,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:41:22,379 INFO L93 Difference]: Finished difference Result 6984 states and 9969 transitions. [2021-12-06 23:41:22,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:41:22,380 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-12-06 23:41:22,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:41:22,423 INFO L225 Difference]: With dead ends: 6984 [2021-12-06 23:41:22,423 INFO L226 Difference]: Without dead ends: 6981 [2021-12-06 23:41:22,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:41:22,428 INFO L933 BasicCegarLoop]: 3300 mSDtfsCounter, 5121 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 2796 mSolverCounterSat, 2785 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5562 SdHoareTripleChecker+Valid, 3320 SdHoareTripleChecker+Invalid, 5586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2785 IncrementalHoareTripleChecker+Valid, 2796 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:41:22,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5562 Valid, 3320 Invalid, 5586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2785 Valid, 2796 Invalid, 5 Unknown, 0 Unchecked, 28.1s Time] [2021-12-06 23:41:22,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6981 states. [2021-12-06 23:41:22,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6981 to 6453. [2021-12-06 23:41:22,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6453 states, 3944 states have (on average 1.2421399594320486) internal successors, (4899), 4164 states have internal predecessors, (4899), 1994 states have call successors, (1994), 452 states have call predecessors, (1994), 514 states have return successors, (2237), 1966 states have call predecessors, (2237), 1967 states have call successors, (2237) [2021-12-06 23:41:22,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6453 states to 6453 states and 9130 transitions. [2021-12-06 23:41:22,784 INFO L78 Accepts]: Start accepts. Automaton has 6453 states and 9130 transitions. Word has length 13 [2021-12-06 23:41:22,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:41:22,784 INFO L470 AbstractCegarLoop]: Abstraction has 6453 states and 9130 transitions. [2021-12-06 23:41:22,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 23:41:22,785 INFO L276 IsEmpty]: Start isEmpty. Operand 6453 states and 9130 transitions. [2021-12-06 23:41:22,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-06 23:41:22,785 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:41:22,785 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:41:22,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 23:41:22,785 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:41:22,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:41:22,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1342469199, now seen corresponding path program 1 times [2021-12-06 23:41:22,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:41:22,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892333330] [2021-12-06 23:41:22,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:41:22,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:41:22,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:41:23,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:41:23,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:41:23,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:41:23,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:41:23,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892333330] [2021-12-06 23:41:23,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892333330] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:41:23,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:41:23,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:41:23,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487320667] [2021-12-06 23:41:23,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:41:23,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:41:23,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:41:23,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:41:23,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:41:23,267 INFO L87 Difference]: Start difference. First operand 6453 states and 9130 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 23:41:24,751 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:41:26,771 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:41:33,907 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:41:37,540 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:41:41,297 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:41:43,357 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:41:46,729 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:41:51,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:41:51,854 INFO L93 Difference]: Finished difference Result 6997 states and 9976 transitions. [2021-12-06 23:41:51,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:41:51,855 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-12-06 23:41:51,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:41:51,895 INFO L225 Difference]: With dead ends: 6997 [2021-12-06 23:41:51,896 INFO L226 Difference]: Without dead ends: 6993 [2021-12-06 23:41:51,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:41:51,899 INFO L933 BasicCegarLoop]: 3321 mSDtfsCounter, 5113 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 2780 mSolverCounterSat, 2822 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5514 SdHoareTripleChecker+Valid, 3348 SdHoareTripleChecker+Invalid, 5607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2822 IncrementalHoareTripleChecker+Valid, 2780 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:41:51,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5514 Valid, 3348 Invalid, 5607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2822 Valid, 2780 Invalid, 5 Unknown, 0 Unchecked, 28.0s Time] [2021-12-06 23:41:51,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6993 states. [2021-12-06 23:41:52,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6993 to 6463. [2021-12-06 23:41:52,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6463 states, 3952 states have (on average 1.2408906882591093) internal successors, (4904), 4170 states have internal predecessors, (4904), 1992 states have call successors, (1992), 456 states have call predecessors, (1992), 518 states have return successors, (2237), 1966 states have call predecessors, (2237), 1967 states have call successors, (2237) [2021-12-06 23:41:52,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6463 states to 6463 states and 9133 transitions. [2021-12-06 23:41:52,223 INFO L78 Accepts]: Start accepts. Automaton has 6463 states and 9133 transitions. Word has length 14 [2021-12-06 23:41:52,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:41:52,223 INFO L470 AbstractCegarLoop]: Abstraction has 6463 states and 9133 transitions. [2021-12-06 23:41:52,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 23:41:52,224 INFO L276 IsEmpty]: Start isEmpty. Operand 6463 states and 9133 transitions. [2021-12-06 23:41:52,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-06 23:41:52,224 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:41:52,224 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:41:52,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 23:41:52,224 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:41:52,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:41:52,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1331311846, now seen corresponding path program 1 times [2021-12-06 23:41:52,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:41:52,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87839596] [2021-12-06 23:41:52,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:41:52,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:41:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:41:52,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:41:52,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:41:52,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:41:52,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:41:52,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87839596] [2021-12-06 23:41:52,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87839596] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:41:52,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:41:52,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:41:52,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977293270] [2021-12-06 23:41:52,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:41:52,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:41:52,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:41:52,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:41:52,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:41:52,644 INFO L87 Difference]: Start difference. First operand 6463 states and 9133 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 23:41:53,737 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:41:55,324 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:42:03,153 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:42:08,461 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:42:14,940 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:42:21,550 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:42:23,307 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:42:27,448 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:42:30,750 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:42:35,890 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:42:38,938 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:42:51,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:42:51,722 INFO L93 Difference]: Finished difference Result 19977 states and 30237 transitions. [2021-12-06 23:42:51,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:42:51,723 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-12-06 23:42:51,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:42:51,796 INFO L225 Difference]: With dead ends: 19977 [2021-12-06 23:42:51,796 INFO L226 Difference]: Without dead ends: 13520 [2021-12-06 23:42:51,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:42:51,833 INFO L933 BasicCegarLoop]: 4182 mSDtfsCounter, 6628 mSDsluCounter, 1352 mSDsCounter, 0 mSdLazyCounter, 7219 mSolverCounterSat, 3849 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7409 SdHoareTripleChecker+Valid, 5534 SdHoareTripleChecker+Invalid, 11075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3849 IncrementalHoareTripleChecker+Valid, 7219 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.9s IncrementalHoareTripleChecker+Time [2021-12-06 23:42:51,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7409 Valid, 5534 Invalid, 11075 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3849 Valid, 7219 Invalid, 7 Unknown, 0 Unchecked, 57.9s Time] [2021-12-06 23:42:51,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13520 states. [2021-12-06 23:42:52,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13520 to 13415. [2021-12-06 23:42:52,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13415 states, 8211 states have (on average 1.2357812690293508) internal successors, (10147), 8669 states have internal predecessors, (10147), 4058 states have call successors, (4058), 904 states have call predecessors, (4058), 1145 states have return successors, (5770), 4109 states have call predecessors, (5770), 4011 states have call successors, (5770) [2021-12-06 23:42:52,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13415 states to 13415 states and 19975 transitions. [2021-12-06 23:42:52,523 INFO L78 Accepts]: Start accepts. Automaton has 13415 states and 19975 transitions. Word has length 15 [2021-12-06 23:42:52,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:42:52,523 INFO L470 AbstractCegarLoop]: Abstraction has 13415 states and 19975 transitions. [2021-12-06 23:42:52,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 23:42:52,524 INFO L276 IsEmpty]: Start isEmpty. Operand 13415 states and 19975 transitions. [2021-12-06 23:42:52,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 23:42:52,525 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:42:52,525 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:42:52,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 23:42:52,525 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:42:52,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:42:52,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1680816812, now seen corresponding path program 1 times [2021-12-06 23:42:52,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:42:52,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260660721] [2021-12-06 23:42:52,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:42:52,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:42:52,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:42:52,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:42:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:42:52,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:42:52,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:42:52,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260660721] [2021-12-06 23:42:52,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260660721] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:42:52,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:42:52,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:42:52,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044128244] [2021-12-06 23:42:52,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:42:52,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:42:52,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:42:52,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:42:52,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:42:52,901 INFO L87 Difference]: Start difference. First operand 13415 states and 19975 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 23:42:54,530 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:42:56,551 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:43:04,383 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:43:07,969 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:43:11,737 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:43:13,792 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:43:16,972 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:43:22,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:43:22,896 INFO L93 Difference]: Finished difference Result 13734 states and 20348 transitions. [2021-12-06 23:43:22,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:43:22,897 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-12-06 23:43:22,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:43:22,950 INFO L225 Difference]: With dead ends: 13734 [2021-12-06 23:43:22,950 INFO L226 Difference]: Without dead ends: 13730 [2021-12-06 23:43:22,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:43:22,957 INFO L933 BasicCegarLoop]: 3367 mSDtfsCounter, 5084 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 2831 mSolverCounterSat, 2813 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5481 SdHoareTripleChecker+Valid, 3427 SdHoareTripleChecker+Invalid, 5649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2813 IncrementalHoareTripleChecker+Valid, 2831 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:43:22,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5481 Valid, 3427 Invalid, 5649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2813 Valid, 2831 Invalid, 5 Unknown, 0 Unchecked, 29.1s Time] [2021-12-06 23:43:22,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13730 states. [2021-12-06 23:43:23,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13730 to 13645. [2021-12-06 23:43:23,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13645 states, 8371 states have (on average 1.2321108589176921) internal successors, (10314), 8831 states have internal predecessors, (10314), 4072 states have call successors, (4072), 960 states have call predecessors, (4072), 1201 states have return successors, (5786), 4125 states have call predecessors, (5786), 4027 states have call successors, (5786) [2021-12-06 23:43:23,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13645 states to 13645 states and 20172 transitions. [2021-12-06 23:43:23,654 INFO L78 Accepts]: Start accepts. Automaton has 13645 states and 20172 transitions. Word has length 16 [2021-12-06 23:43:23,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:43:23,654 INFO L470 AbstractCegarLoop]: Abstraction has 13645 states and 20172 transitions. [2021-12-06 23:43:23,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 23:43:23,655 INFO L276 IsEmpty]: Start isEmpty. Operand 13645 states and 20172 transitions. [2021-12-06 23:43:23,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-06 23:43:23,655 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:43:23,655 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:43:23,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 23:43:23,656 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:43:23,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:43:23,656 INFO L85 PathProgramCache]: Analyzing trace with hash -567519831, now seen corresponding path program 1 times [2021-12-06 23:43:23,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:43:23,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179532482] [2021-12-06 23:43:23,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:43:23,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:43:23,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:43:23,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:43:23,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:43:23,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:43:23,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:43:23,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179532482] [2021-12-06 23:43:23,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179532482] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:43:23,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:43:23,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:43:23,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109968994] [2021-12-06 23:43:23,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:43:23,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:43:23,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:43:23,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:43:23,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:43:23,999 INFO L87 Difference]: Start difference. First operand 13645 states and 20172 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 23:43:26,580 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:43:34,296 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:43:37,588 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:43:41,118 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:43:43,170 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:43:46,085 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:43:52,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:43:52,726 INFO L93 Difference]: Finished difference Result 14500 states and 21531 transitions. [2021-12-06 23:43:52,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:43:52,727 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-12-06 23:43:52,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:43:52,780 INFO L225 Difference]: With dead ends: 14500 [2021-12-06 23:43:52,780 INFO L226 Difference]: Without dead ends: 14496 [2021-12-06 23:43:52,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:43:52,788 INFO L933 BasicCegarLoop]: 3440 mSDtfsCounter, 5059 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 2776 mSolverCounterSat, 2918 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5388 SdHoareTripleChecker+Valid, 3635 SdHoareTripleChecker+Invalid, 5698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2918 IncrementalHoareTripleChecker+Valid, 2776 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.8s IncrementalHoareTripleChecker+Time [2021-12-06 23:43:52,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5388 Valid, 3635 Invalid, 5698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2918 Valid, 2776 Invalid, 4 Unknown, 0 Unchecked, 27.8s Time] [2021-12-06 23:43:52,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14496 states. [2021-12-06 23:43:53,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14496 to 14075. [2021-12-06 23:43:53,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14075 states, 8641 states have (on average 1.2309917833584076) internal successors, (10637), 9107 states have internal predecessors, (10637), 4178 states have call successors, (4178), 1010 states have call predecessors, (4178), 1255 states have return successors, (5958), 4237 states have call predecessors, (5958), 4135 states have call successors, (5958) [2021-12-06 23:43:53,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14075 states to 14075 states and 20773 transitions. [2021-12-06 23:43:53,514 INFO L78 Accepts]: Start accepts. Automaton has 14075 states and 20773 transitions. Word has length 17 [2021-12-06 23:43:53,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:43:53,515 INFO L470 AbstractCegarLoop]: Abstraction has 14075 states and 20773 transitions. [2021-12-06 23:43:53,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 23:43:53,515 INFO L276 IsEmpty]: Start isEmpty. Operand 14075 states and 20773 transitions. [2021-12-06 23:43:53,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-06 23:43:53,515 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:43:53,516 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:43:53,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 23:43:53,516 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:43:53,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:43:53,516 INFO L85 PathProgramCache]: Analyzing trace with hash -415046921, now seen corresponding path program 1 times [2021-12-06 23:43:53,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:43:53,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422845389] [2021-12-06 23:43:53,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:43:53,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:43:53,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:43:53,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:43:53,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:43:53,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:43:53,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:43:53,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422845389] [2021-12-06 23:43:53,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422845389] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:43:53,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:43:53,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:43:53,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702794031] [2021-12-06 23:43:53,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:43:53,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:43:53,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:43:53,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:43:53,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:43:53,855 INFO L87 Difference]: Start difference. First operand 14075 states and 20773 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 23:43:55,945 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:43:57,970 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:44:06,004 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:44:09,793 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:44:13,639 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:44:15,665 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:44:18,681 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:44:24,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:44:24,535 INFO L93 Difference]: Finished difference Result 14512 states and 21543 transitions. [2021-12-06 23:44:24,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:44:24,536 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-12-06 23:44:24,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:44:24,580 INFO L225 Difference]: With dead ends: 14512 [2021-12-06 23:44:24,580 INFO L226 Difference]: Without dead ends: 14509 [2021-12-06 23:44:24,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:44:24,585 INFO L933 BasicCegarLoop]: 3335 mSDtfsCounter, 5071 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 2804 mSolverCounterSat, 2744 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5509 SdHoareTripleChecker+Valid, 3355 SdHoareTripleChecker+Invalid, 5552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2744 IncrementalHoareTripleChecker+Valid, 2804 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.7s IncrementalHoareTripleChecker+Time [2021-12-06 23:44:24,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5509 Valid, 3355 Invalid, 5552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2744 Valid, 2804 Invalid, 4 Unknown, 0 Unchecked, 29.7s Time] [2021-12-06 23:44:24,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14509 states. [2021-12-06 23:44:25,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14509 to 14074. [2021-12-06 23:44:25,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14074 states, 8641 states have (on average 1.2308760560120355) internal successors, (10636), 9106 states have internal predecessors, (10636), 4177 states have call successors, (4177), 1010 states have call predecessors, (4177), 1255 states have return successors, (5958), 4237 states have call predecessors, (5958), 4135 states have call successors, (5958) [2021-12-06 23:44:25,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14074 states to 14074 states and 20771 transitions. [2021-12-06 23:44:25,313 INFO L78 Accepts]: Start accepts. Automaton has 14074 states and 20771 transitions. Word has length 18 [2021-12-06 23:44:25,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:44:25,313 INFO L470 AbstractCegarLoop]: Abstraction has 14074 states and 20771 transitions. [2021-12-06 23:44:25,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 23:44:25,313 INFO L276 IsEmpty]: Start isEmpty. Operand 14074 states and 20771 transitions. [2021-12-06 23:44:25,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-06 23:44:25,314 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:44:25,314 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:44:25,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 23:44:25,314 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:44:25,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:44:25,315 INFO L85 PathProgramCache]: Analyzing trace with hash 16650860, now seen corresponding path program 1 times [2021-12-06 23:44:25,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:44:25,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238984486] [2021-12-06 23:44:25,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:44:25,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:44:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:44:25,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:44:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:44:25,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:44:25,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:44:25,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238984486] [2021-12-06 23:44:25,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238984486] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:44:25,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:44:25,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:44:25,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617909137] [2021-12-06 23:44:25,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:44:25,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:44:25,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:44:25,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:44:25,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:44:25,650 INFO L87 Difference]: Start difference. First operand 14074 states and 20771 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 23:44:27,575 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:44:29,299 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:44:40,409 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:44:44,151 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:44:53,377 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:44:57,286 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:44:59,347 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:45:02,977 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:45:19,277 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:45:21,350 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:45:23,825 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:45:27,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:45:27,629 INFO L93 Difference]: Finished difference Result 42778 states and 68718 transitions. [2021-12-06 23:45:27,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:45:27,630 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-12-06 23:45:27,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:45:27,742 INFO L225 Difference]: With dead ends: 42778 [2021-12-06 23:45:27,742 INFO L226 Difference]: Without dead ends: 28710 [2021-12-06 23:45:27,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:45:27,817 INFO L933 BasicCegarLoop]: 4615 mSDtfsCounter, 6514 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 7468 mSolverCounterSat, 3777 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7349 SdHoareTripleChecker+Valid, 5740 SdHoareTripleChecker+Invalid, 11253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3777 IncrementalHoareTripleChecker+Valid, 7468 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.7s IncrementalHoareTripleChecker+Time [2021-12-06 23:45:27,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7349 Valid, 5740 Invalid, 11253 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3777 Valid, 7468 Invalid, 8 Unknown, 0 Unchecked, 59.7s Time] [2021-12-06 23:45:27,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28710 states. [2021-12-06 23:45:29,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28710 to 27800. [2021-12-06 23:45:29,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27800 states, 17093 states have (on average 1.231088749780612) internal successors, (21043), 17990 states have internal predecessors, (21043), 8229 states have call successors, (8229), 2009 states have call predecessors, (8229), 2477 states have return successors, (13389), 8348 states have call predecessors, (13389), 8165 states have call successors, (13389) [2021-12-06 23:45:29,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27800 states to 27800 states and 42661 transitions. [2021-12-06 23:45:29,366 INFO L78 Accepts]: Start accepts. Automaton has 27800 states and 42661 transitions. Word has length 19 [2021-12-06 23:45:29,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:45:29,366 INFO L470 AbstractCegarLoop]: Abstraction has 27800 states and 42661 transitions. [2021-12-06 23:45:29,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 23:45:29,366 INFO L276 IsEmpty]: Start isEmpty. Operand 27800 states and 42661 transitions. [2021-12-06 23:45:29,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-06 23:45:29,367 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:45:29,367 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:45:29,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 23:45:29,367 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:45:29,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:45:29,368 INFO L85 PathProgramCache]: Analyzing trace with hash 514385050, now seen corresponding path program 1 times [2021-12-06 23:45:29,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:45:29,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359966449] [2021-12-06 23:45:29,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:45:29,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:45:29,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:45:29,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:45:29,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:45:29,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:45:29,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:45:29,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359966449] [2021-12-06 23:45:29,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359966449] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:45:29,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:45:29,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:45:29,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211488007] [2021-12-06 23:45:29,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:45:29,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:45:29,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:45:29,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:45:29,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:45:29,723 INFO L87 Difference]: Start difference. First operand 27800 states and 42661 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 23:45:31,209 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:45:33,233 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:45:42,646 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:45:45,881 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:45:50,250 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:45:52,301 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:45:54,792 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:46:02,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:46:02,069 INFO L93 Difference]: Finished difference Result 28672 states and 44262 transitions. [2021-12-06 23:46:02,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:46:02,071 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-12-06 23:46:02,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:46:02,171 INFO L225 Difference]: With dead ends: 28672 [2021-12-06 23:46:02,172 INFO L226 Difference]: Without dead ends: 28669 [2021-12-06 23:46:02,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:46:02,183 INFO L933 BasicCegarLoop]: 3291 mSDtfsCounter, 5094 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 2794 mSolverCounterSat, 2760 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5536 SdHoareTripleChecker+Valid, 3311 SdHoareTripleChecker+Invalid, 5560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2760 IncrementalHoareTripleChecker+Valid, 2794 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.4s IncrementalHoareTripleChecker+Time [2021-12-06 23:46:02,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5536 Valid, 3311 Invalid, 5560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2760 Valid, 2794 Invalid, 6 Unknown, 0 Unchecked, 30.4s Time] [2021-12-06 23:46:02,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28669 states. [2021-12-06 23:46:03,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28669 to 27799. [2021-12-06 23:46:03,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27799 states, 17093 states have (on average 1.2310302462996547) internal successors, (21042), 17989 states have internal predecessors, (21042), 8228 states have call successors, (8228), 2009 states have call predecessors, (8228), 2477 states have return successors, (13389), 8348 states have call predecessors, (13389), 8165 states have call successors, (13389) [2021-12-06 23:46:03,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27799 states to 27799 states and 42659 transitions. [2021-12-06 23:46:03,765 INFO L78 Accepts]: Start accepts. Automaton has 27799 states and 42659 transitions. Word has length 20 [2021-12-06 23:46:03,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:46:03,765 INFO L470 AbstractCegarLoop]: Abstraction has 27799 states and 42659 transitions. [2021-12-06 23:46:03,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 23:46:03,765 INFO L276 IsEmpty]: Start isEmpty. Operand 27799 states and 42659 transitions. [2021-12-06 23:46:03,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-06 23:46:03,766 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:46:03,766 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:46:03,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 23:46:03,766 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:46:03,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:46:03,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1235719377, now seen corresponding path program 1 times [2021-12-06 23:46:03,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:46:03,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142832965] [2021-12-06 23:46:03,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:03,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:46:03,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:04,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:46:04,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:04,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:46:04,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:46:04,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142832965] [2021-12-06 23:46:04,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142832965] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:46:04,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:46:04,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:46:04,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218978932] [2021-12-06 23:46:04,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:46:04,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:46:04,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:46:04,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:46:04,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:46:04,091 INFO L87 Difference]: Start difference. First operand 27799 states and 42659 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 23:46:05,773 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:46:07,798 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:46:17,740 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:46:22,591 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:46:27,983 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:46:29,897 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:46:34,657 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:46:38,801 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:46:50,693 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:46:56,817 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:46:59,304 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:47:01,766 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:47:10,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:47:10,781 INFO L93 Difference]: Finished difference Result 83462 states and 143698 transitions. [2021-12-06 23:47:10,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:47:10,782 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-12-06 23:47:10,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:47:11,038 INFO L225 Difference]: With dead ends: 83462 [2021-12-06 23:47:11,038 INFO L226 Difference]: Without dead ends: 55669 [2021-12-06 23:47:11,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:47:11,214 INFO L933 BasicCegarLoop]: 4371 mSDtfsCounter, 6589 mSDsluCounter, 1093 mSDsCounter, 0 mSdLazyCounter, 7297 mSolverCounterSat, 3709 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7395 SdHoareTripleChecker+Valid, 5464 SdHoareTripleChecker+Invalid, 11015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3709 IncrementalHoareTripleChecker+Valid, 7297 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.5s IncrementalHoareTripleChecker+Time [2021-12-06 23:47:11,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7395 Valid, 5464 Invalid, 11015 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3709 Valid, 7297 Invalid, 9 Unknown, 0 Unchecked, 62.5s Time] [2021-12-06 23:47:11,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55669 states. [2021-12-06 23:47:14,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55669 to 53901. [2021-12-06 23:47:14,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53901 states, 33243 states have (on average 1.232740727371176) internal successors, (40980), 34999 states have internal predecessors, (40980), 15799 states have call successors, (15799), 3957 states have call predecessors, (15799), 4858 states have return successors, (30623), 16018 states have call predecessors, (30623), 15699 states have call successors, (30623) [2021-12-06 23:47:14,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53901 states to 53901 states and 87402 transitions. [2021-12-06 23:47:14,745 INFO L78 Accepts]: Start accepts. Automaton has 53901 states and 87402 transitions. Word has length 21 [2021-12-06 23:47:14,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:47:14,745 INFO L470 AbstractCegarLoop]: Abstraction has 53901 states and 87402 transitions. [2021-12-06 23:47:14,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 23:47:14,745 INFO L276 IsEmpty]: Start isEmpty. Operand 53901 states and 87402 transitions. [2021-12-06 23:47:14,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-06 23:47:14,746 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:47:14,746 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:47:14,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 23:47:14,747 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:47:14,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:47:14,747 INFO L85 PathProgramCache]: Analyzing trace with hash 345623101, now seen corresponding path program 1 times [2021-12-06 23:47:14,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:47:14,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950384011] [2021-12-06 23:47:14,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:47:14,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:47:14,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:47:15,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:47:15,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:47:15,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:47:15,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:47:15,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950384011] [2021-12-06 23:47:15,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950384011] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:47:15,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:47:15,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:47:15,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065409721] [2021-12-06 23:47:15,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:47:15,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:47:15,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:47:15,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:47:15,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:47:15,161 INFO L87 Difference]: Start difference. First operand 53901 states and 87402 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 23:47:16,913 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:47:18,874 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:47:29,583 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:47:34,534 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:47:37,958 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:47:40,043 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:47:42,715 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:47:51,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:47:51,203 INFO L93 Difference]: Finished difference Result 55579 states and 90603 transitions. [2021-12-06 23:47:51,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:47:51,204 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-12-06 23:47:51,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:47:51,436 INFO L225 Difference]: With dead ends: 55579 [2021-12-06 23:47:51,436 INFO L226 Difference]: Without dead ends: 55576 [2021-12-06 23:47:51,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:47:51,464 INFO L933 BasicCegarLoop]: 3298 mSDtfsCounter, 5083 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 2794 mSolverCounterSat, 2753 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5523 SdHoareTripleChecker+Valid, 3318 SdHoareTripleChecker+Invalid, 5552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2753 IncrementalHoareTripleChecker+Valid, 2794 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.6s IncrementalHoareTripleChecker+Time [2021-12-06 23:47:51,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5523 Valid, 3318 Invalid, 5552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2753 Valid, 2794 Invalid, 5 Unknown, 0 Unchecked, 32.6s Time] [2021-12-06 23:47:51,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55576 states. [2021-12-06 23:47:54,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55576 to 53900. [2021-12-06 23:47:54,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53900 states, 33243 states have (on average 1.2327106458502541) internal successors, (40979), 34998 states have internal predecessors, (40979), 15798 states have call successors, (15798), 3957 states have call predecessors, (15798), 4858 states have return successors, (30623), 16018 states have call predecessors, (30623), 15699 states have call successors, (30623) [2021-12-06 23:47:54,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53900 states to 53900 states and 87400 transitions. [2021-12-06 23:47:54,894 INFO L78 Accepts]: Start accepts. Automaton has 53900 states and 87400 transitions. Word has length 22 [2021-12-06 23:47:54,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:47:54,894 INFO L470 AbstractCegarLoop]: Abstraction has 53900 states and 87400 transitions. [2021-12-06 23:47:54,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 23:47:54,894 INFO L276 IsEmpty]: Start isEmpty. Operand 53900 states and 87400 transitions. [2021-12-06 23:47:54,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-06 23:47:54,895 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:47:54,895 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:47:54,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 23:47:54,895 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:47:54,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:47:54,896 INFO L85 PathProgramCache]: Analyzing trace with hash 2122604530, now seen corresponding path program 1 times [2021-12-06 23:47:54,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:47:54,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562891701] [2021-12-06 23:47:54,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:47:54,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:47:54,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:47:55,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:47:55,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:47:55,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:47:55,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:47:55,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562891701] [2021-12-06 23:47:55,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562891701] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:47:55,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:47:55,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:47:55,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136197792] [2021-12-06 23:47:55,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:47:55,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:47:55,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:47:55,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:47:55,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:47:55,221 INFO L87 Difference]: Start difference. First operand 53900 states and 87400 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 23:47:56,513 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:47:57,996 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:48:07,730 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:48:12,404 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:48:15,544 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:48:17,639 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:48:20,312 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:48:28,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:48:28,808 INFO L93 Difference]: Finished difference Result 55578 states and 90601 transitions. [2021-12-06 23:48:28,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:48:28,809 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-12-06 23:48:28,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:48:29,050 INFO L225 Difference]: With dead ends: 55578 [2021-12-06 23:48:29,050 INFO L226 Difference]: Without dead ends: 55562 [2021-12-06 23:48:29,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:48:29,081 INFO L933 BasicCegarLoop]: 3292 mSDtfsCounter, 5086 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 2794 mSolverCounterSat, 2749 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5526 SdHoareTripleChecker+Valid, 3312 SdHoareTripleChecker+Invalid, 5547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2749 IncrementalHoareTripleChecker+Valid, 2794 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:48:29,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5526 Valid, 3312 Invalid, 5547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2749 Valid, 2794 Invalid, 4 Unknown, 0 Unchecked, 30.1s Time] [2021-12-06 23:48:29,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55562 states. [2021-12-06 23:48:32,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55562 to 53886. [2021-12-06 23:48:32,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53886 states, 33231 states have (on average 1.232734494899341) internal successors, (40965), 34985 states have internal predecessors, (40965), 15796 states have call successors, (15796), 3956 states have call predecessors, (15796), 4858 states have return successors, (30623), 16018 states have call predecessors, (30623), 15699 states have call successors, (30623) [2021-12-06 23:48:32,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53886 states to 53886 states and 87384 transitions. [2021-12-06 23:48:32,619 INFO L78 Accepts]: Start accepts. Automaton has 53886 states and 87384 transitions. Word has length 23 [2021-12-06 23:48:32,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:48:32,619 INFO L470 AbstractCegarLoop]: Abstraction has 53886 states and 87384 transitions. [2021-12-06 23:48:32,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 23:48:32,619 INFO L276 IsEmpty]: Start isEmpty. Operand 53886 states and 87384 transitions. [2021-12-06 23:48:32,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-06 23:48:32,624 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:48:32,624 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-06 23:48:32,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 23:48:32,625 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:48:32,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:48:32,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1157599878, now seen corresponding path program 1 times [2021-12-06 23:48:32,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:48:32,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339794068] [2021-12-06 23:48:32,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:48:32,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:48:32,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:48:33,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:48:33,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:48:33,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 23:48:33,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:48:33,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:48:33,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:48:33,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:48:33,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:48:33,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 23:48:33,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:48:33,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 23:48:33,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:48:33,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 23:48:33,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:48:33,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 23:48:33,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:48:33,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 23:48:33,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:48:33,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 23:48:33,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:48:33,329 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 23:48:33,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:48:33,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339794068] [2021-12-06 23:48:33,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339794068] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:48:33,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:48:33,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 23:48:33,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78713664] [2021-12-06 23:48:33,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:48:33,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:48:33,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:48:33,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:48:33,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:48:33,331 INFO L87 Difference]: Start difference. First operand 53886 states and 87384 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-06 23:48:35,475 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:48:37,074 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:48:51,585 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:49:05,750 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:49:07,827 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:49:13,385 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:49:14,625 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:49:16,694 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:49:18,353 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:49:21,217 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:49:23,262 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:49:35,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:49:35,279 INFO L93 Difference]: Finished difference Result 115862 states and 208406 transitions. [2021-12-06 23:49:35,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:49:35,281 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 94 [2021-12-06 23:49:35,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:49:35,646 INFO L225 Difference]: With dead ends: 115862 [2021-12-06 23:49:35,646 INFO L226 Difference]: Without dead ends: 61982 [2021-12-06 23:49:35,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:49:35,954 INFO L933 BasicCegarLoop]: 3587 mSDtfsCounter, 2716 mSDsluCounter, 2711 mSDsCounter, 0 mSdLazyCounter, 6790 mSolverCounterSat, 2890 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2973 SdHoareTripleChecker+Valid, 6298 SdHoareTripleChecker+Invalid, 9687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2890 IncrementalHoareTripleChecker+Valid, 6790 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.7s IncrementalHoareTripleChecker+Time [2021-12-06 23:49:35,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2973 Valid, 6298 Invalid, 9687 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2890 Valid, 6790 Invalid, 7 Unknown, 0 Unchecked, 56.7s Time] [2021-12-06 23:49:35,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61982 states. [2021-12-06 23:49:39,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61982 to 53902. [2021-12-06 23:49:39,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53902 states, 33247 states have (on average 1.2326224922549402) internal successors, (40981), 35001 states have internal predecessors, (40981), 15796 states have call successors, (15796), 3956 states have call predecessors, (15796), 4858 states have return successors, (30623), 16018 states have call predecessors, (30623), 15699 states have call successors, (30623) [2021-12-06 23:49:39,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53902 states to 53902 states and 87400 transitions. [2021-12-06 23:49:39,914 INFO L78 Accepts]: Start accepts. Automaton has 53902 states and 87400 transitions. Word has length 94 [2021-12-06 23:49:39,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:49:39,915 INFO L470 AbstractCegarLoop]: Abstraction has 53902 states and 87400 transitions. [2021-12-06 23:49:39,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-06 23:49:39,915 INFO L276 IsEmpty]: Start isEmpty. Operand 53902 states and 87400 transitions. [2021-12-06 23:49:39,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-12-06 23:49:39,918 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:49:39,918 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-06 23:49:39,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 23:49:39,919 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:49:39,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:49:39,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1085117948, now seen corresponding path program 1 times [2021-12-06 23:49:39,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:49:39,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008417909] [2021-12-06 23:49:39,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:49:39,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:49:40,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:49:40,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:49:40,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:49:40,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 23:49:40,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:49:40,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:49:40,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:49:40,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:49:40,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:49:40,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 23:49:40,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:49:40,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 23:49:40,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:49:40,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 23:49:40,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:49:40,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 23:49:40,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:49:40,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 23:49:40,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:49:40,508 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 23:49:40,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:49:40,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008417909] [2021-12-06 23:49:40,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008417909] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:49:40,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:49:40,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 23:49:40,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550828408] [2021-12-06 23:49:40,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:49:40,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:49:40,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:49:40,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:49:40,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:49:40,510 INFO L87 Difference]: Start difference. First operand 53902 states and 87400 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 23:49:42,472 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:49:56,899 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:49:58,981 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:50:07,475 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:50:13,889 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:50:17,261 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:50:19,324 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:50:22,105 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:50:31,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:50:31,995 INFO L93 Difference]: Finished difference Result 109538 states and 194888 transitions. [2021-12-06 23:50:31,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 23:50:31,996 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 83 [2021-12-06 23:50:31,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:50:32,303 INFO L225 Difference]: With dead ends: 109538 [2021-12-06 23:50:32,303 INFO L226 Difference]: Without dead ends: 55642 [2021-12-06 23:50:32,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:50:32,767 INFO L933 BasicCegarLoop]: 3798 mSDtfsCounter, 1645 mSDsluCounter, 4443 mSDsCounter, 0 mSdLazyCounter, 6578 mSolverCounterSat, 1207 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2083 SdHoareTripleChecker+Valid, 8241 SdHoareTripleChecker+Invalid, 7791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1207 IncrementalHoareTripleChecker+Valid, 6578 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.4s IncrementalHoareTripleChecker+Time [2021-12-06 23:50:32,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2083 Valid, 8241 Invalid, 7791 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1207 Valid, 6578 Invalid, 6 Unknown, 0 Unchecked, 46.4s Time] [2021-12-06 23:50:32,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55642 states. [2021-12-06 23:50:36,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55642 to 53950. [2021-12-06 23:50:36,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53950 states, 33295 states have (on average 1.2322871301997298) internal successors, (41029), 35049 states have internal predecessors, (41029), 15796 states have call successors, (15796), 3956 states have call predecessors, (15796), 4858 states have return successors, (30623), 16018 states have call predecessors, (30623), 15699 states have call successors, (30623) [2021-12-06 23:50:37,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53950 states to 53950 states and 87448 transitions. [2021-12-06 23:50:37,018 INFO L78 Accepts]: Start accepts. Automaton has 53950 states and 87448 transitions. Word has length 83 [2021-12-06 23:50:37,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:50:37,019 INFO L470 AbstractCegarLoop]: Abstraction has 53950 states and 87448 transitions. [2021-12-06 23:50:37,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 23:50:37,019 INFO L276 IsEmpty]: Start isEmpty. Operand 53950 states and 87448 transitions. [2021-12-06 23:50:37,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-12-06 23:50:37,022 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:50:37,022 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-06 23:50:37,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 23:50:37,022 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:50:37,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:50:37,022 INFO L85 PathProgramCache]: Analyzing trace with hash -943468162, now seen corresponding path program 1 times [2021-12-06 23:50:37,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:50:37,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224461085] [2021-12-06 23:50:37,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:50:37,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:50:37,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:37,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:50:37,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:37,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 23:50:37,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:37,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:50:37,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:37,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:50:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:37,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 23:50:37,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:37,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 23:50:37,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:37,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 23:50:37,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:37,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 23:50:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:37,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 23:50:37,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:50:37,535 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 23:50:37,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:50:37,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224461085] [2021-12-06 23:50:37,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224461085] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:50:37,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:50:37,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:50:37,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798001371] [2021-12-06 23:50:37,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:50:37,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:50:37,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:50:37,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:50:37,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:50:37,537 INFO L87 Difference]: Start difference. First operand 53950 states and 87448 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 23:50:38,914 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:50:40,935 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:50:53,267 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:51:01,624 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:51:12,372 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:51:18,745 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:51:20,793 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:51:25,187 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:51:28,008 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:51:32,304 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:51:33,740 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:51:36,424 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:51:38,612 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:51:53,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:51:53,220 INFO L93 Difference]: Finished difference Result 109609 states and 189240 transitions. [2021-12-06 23:51:53,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:51:53,221 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 83 [2021-12-06 23:51:53,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:51:53,493 INFO L225 Difference]: With dead ends: 109609 [2021-12-06 23:51:53,494 INFO L226 Difference]: Without dead ends: 55665 [2021-12-06 23:51:53,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:51:53,909 INFO L933 BasicCegarLoop]: 7017 mSDtfsCounter, 5087 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 7935 mSolverCounterSat, 2902 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5904 SdHoareTripleChecker+Valid, 8020 SdHoareTripleChecker+Invalid, 10848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2902 IncrementalHoareTripleChecker+Valid, 7935 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70.5s IncrementalHoareTripleChecker+Time [2021-12-06 23:51:53,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5904 Valid, 8020 Invalid, 10848 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2902 Valid, 7935 Invalid, 11 Unknown, 0 Unchecked, 70.5s Time] [2021-12-06 23:51:53,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55665 states. [2021-12-06 23:51:57,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55665 to 53278. [2021-12-06 23:51:57,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53278 states, 32903 states have (on average 1.2322584566756831) internal successors, (40545), 34608 states have internal predecessors, (40545), 15564 states have call successors, (15564), 3927 states have call predecessors, (15564), 4810 states have return successors, (25708), 15805 states have call predecessors, (25708), 15439 states have call successors, (25708) [2021-12-06 23:51:57,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53278 states to 53278 states and 81817 transitions. [2021-12-06 23:51:57,490 INFO L78 Accepts]: Start accepts. Automaton has 53278 states and 81817 transitions. Word has length 83 [2021-12-06 23:51:57,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:51:57,490 INFO L470 AbstractCegarLoop]: Abstraction has 53278 states and 81817 transitions. [2021-12-06 23:51:57,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 23:51:57,491 INFO L276 IsEmpty]: Start isEmpty. Operand 53278 states and 81817 transitions. [2021-12-06 23:51:57,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-06 23:51:57,495 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:51:57,495 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 23:51:57,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 23:51:57,495 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:51:57,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:51:57,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1942796108, now seen corresponding path program 1 times [2021-12-06 23:51:57,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:51:57,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074188124] [2021-12-06 23:51:57,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:51:57,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:51:57,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:57,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:51:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:57,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 23:51:57,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:57,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 23:51:57,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:57,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:51:57,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:58,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 23:51:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:58,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 23:51:58,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:58,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 23:51:58,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:58,092 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 23:51:58,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:51:58,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074188124] [2021-12-06 23:51:58,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074188124] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:51:58,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:51:58,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 23:51:58,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841346830] [2021-12-06 23:51:58,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:51:58,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:51:58,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:51:58,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:51:58,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:51:58,094 INFO L87 Difference]: Start difference. First operand 53278 states and 81817 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 23:51:59,376 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:52:01,397 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:52:13,499 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []