./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--video--udlfb.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c43fd0-ed60-4b69-839b-1e9147a73135/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c43fd0-ed60-4b69-839b-1e9147a73135/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c43fd0-ed60-4b69-839b-1e9147a73135/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c43fd0-ed60-4b69-839b-1e9147a73135/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--video--udlfb.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c43fd0-ed60-4b69-839b-1e9147a73135/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c43fd0-ed60-4b69-839b-1e9147a73135/bin/uautomizer-J5u9QxTXDZ --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 818c635cf736ceef0cf6e46266c8f75f5ad55dd0b6a806d4c2f32c53e0369659 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:24:12,306 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:24:12,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:24:12,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:24:12,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:24:12,359 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:24:12,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:24:12,367 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:24:12,370 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:24:12,375 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:24:12,376 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:24:12,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:24:12,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:24:12,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:24:12,384 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:24:12,386 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:24:12,388 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:24:12,389 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:24:12,391 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:24:12,398 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:24:12,400 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:24:12,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:24:12,404 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:24:12,405 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:24:12,415 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:24:12,416 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:24:12,416 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:24:12,418 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:24:12,419 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:24:12,420 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:24:12,420 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:24:12,421 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:24:12,424 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:24:12,426 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:24:12,427 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:24:12,427 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:24:12,428 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:24:12,428 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:24:12,428 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:24:12,429 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:24:12,430 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:24:12,431 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c43fd0-ed60-4b69-839b-1e9147a73135/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-10-17 10:24:12,480 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:24:12,482 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:24:12,483 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:24:12,483 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:24:12,484 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:24:12,485 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:24:12,485 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:24:12,486 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:24:12,486 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:24:12,486 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:24:12,487 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:24:12,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:24:12,488 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:24:12,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:24:12,488 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:24:12,488 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:24:12,489 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:24:12,489 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:24:12,489 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:24:12,489 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:24:12,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:24:12,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:24:12,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:24:12,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:24:12,490 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:24:12,504 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:24:12,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:24:12,505 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:24:12,505 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:24:12,505 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:24:12,505 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_53c43fd0-ed60-4b69-839b-1e9147a73135/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c43fd0-ed60-4b69-839b-1e9147a73135/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 818c635cf736ceef0cf6e46266c8f75f5ad55dd0b6a806d4c2f32c53e0369659 [2022-10-17 10:24:12,756 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:24:12,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:24:12,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:24:12,780 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:24:12,781 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:24:12,783 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c43fd0-ed60-4b69-839b-1e9147a73135/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--video--udlfb.ko-main.cil.out.i [2022-10-17 10:24:12,843 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c43fd0-ed60-4b69-839b-1e9147a73135/bin/uautomizer-J5u9QxTXDZ/data/1920f3d6b/3570c1740c524192ba39ed70a19e7f5b/FLAG24738eb56 [2022-10-17 10:24:13,800 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:24:13,801 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c43fd0-ed60-4b69-839b-1e9147a73135/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--video--udlfb.ko-main.cil.out.i [2022-10-17 10:24:13,854 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c43fd0-ed60-4b69-839b-1e9147a73135/bin/uautomizer-J5u9QxTXDZ/data/1920f3d6b/3570c1740c524192ba39ed70a19e7f5b/FLAG24738eb56 [2022-10-17 10:24:14,257 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c43fd0-ed60-4b69-839b-1e9147a73135/bin/uautomizer-J5u9QxTXDZ/data/1920f3d6b/3570c1740c524192ba39ed70a19e7f5b [2022-10-17 10:24:14,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:24:14,260 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:24:14,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:24:14,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:24:14,266 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:24:14,267 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:24:14" (1/1) ... [2022-10-17 10:24:14,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cde6cf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:14, skipping insertion in model container [2022-10-17 10:24:14,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:24:14" (1/1) ... [2022-10-17 10:24:14,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:24:14,406 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:24:16,048 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_53c43fd0-ed60-4b69-839b-1e9147a73135/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--video--udlfb.ko-main.cil.out.i[199878,199891] [2022-10-17 10:24:16,159 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:24:16,185 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:24:16,567 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_53c43fd0-ed60-4b69-839b-1e9147a73135/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--video--udlfb.ko-main.cil.out.i[199878,199891] [2022-10-17 10:24:16,586 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:24:16,734 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:24:16,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:16 WrapperNode [2022-10-17 10:24:16,736 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:24:16,737 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:24:16,737 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:24:16,738 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:24:16,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:16" (1/1) ... [2022-10-17 10:24:16,858 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:16" (1/1) ... [2022-10-17 10:24:17,495 INFO L138 Inliner]: procedures = 257, calls = 1499, calls flagged for inlining = 108, calls inlined = 98, statements flattened = 3732 [2022-10-17 10:24:17,495 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:24:17,496 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:24:17,496 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:24:17,496 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:24:17,505 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:16" (1/1) ... [2022-10-17 10:24:17,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:16" (1/1) ... [2022-10-17 10:24:17,689 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:16" (1/1) ... [2022-10-17 10:24:17,690 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:16" (1/1) ... [2022-10-17 10:24:18,237 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:16" (1/1) ... [2022-10-17 10:24:18,255 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:16" (1/1) ... [2022-10-17 10:24:18,323 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:16" (1/1) ... [2022-10-17 10:24:18,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:16" (1/1) ... [2022-10-17 10:24:18,443 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:24:18,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:24:18,444 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:24:18,444 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:24:18,445 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:16" (1/1) ... [2022-10-17 10:24:18,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:24:18,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c43fd0-ed60-4b69-839b-1e9147a73135/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:24:18,506 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c43fd0-ed60-4b69-839b-1e9147a73135/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:24:18,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53c43fd0-ed60-4b69-839b-1e9147a73135/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:24:18,585 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-10-17 10:24:18,586 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-10-17 10:24:18,586 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_fillrect [2022-10-17 10:24:18,586 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_fillrect [2022-10-17 10:24:18,586 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-10-17 10:24:18,586 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-10-17 10:24:18,586 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_submit_urb [2022-10-17 10:24:18,587 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_submit_urb [2022-10-17 10:24:18,587 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_urb_completion [2022-10-17 10:24:18,587 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_urb_completion [2022-10-17 10:24:18,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-17 10:24:18,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-17 10:24:18,588 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_mmap [2022-10-17 10:24:18,588 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_mmap [2022-10-17 10:24:18,588 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_free_framebuffer_work [2022-10-17 10:24:18,588 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_free_framebuffer_work [2022-10-17 10:24:18,588 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_vidreg_unlock [2022-10-17 10:24:18,588 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_vidreg_unlock [2022-10-17 10:24:18,589 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-17 10:24:18,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-17 10:24:18,589 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_check_var [2022-10-17 10:24:18,589 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_check_var [2022-10-17 10:24:18,589 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_is_valid_mode [2022-10-17 10:24:18,589 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_is_valid_mode [2022-10-17 10:24:18,590 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_set_register_lfsr16 [2022-10-17 10:24:18,590 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_set_register_lfsr16 [2022-10-17 10:24:18,590 INFO L130 BoogieDeclarations]: Found specification of procedure fb_destroy_modelist [2022-10-17 10:24:18,590 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_destroy_modelist [2022-10-17 10:24:18,590 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2022-10-17 10:24:18,590 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2022-10-17 10:24:18,591 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-10-17 10:24:18,591 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-10-17 10:24:18,591 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_setcolreg [2022-10-17 10:24:18,591 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_setcolreg [2022-10-17 10:24:18,591 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-17 10:24:18,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-17 10:24:18,592 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-10-17 10:24:18,592 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-10-17 10:24:18,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-10-17 10:24:18,592 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-10-17 10:24:18,592 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_release [2022-10-17 10:24:18,593 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_release [2022-10-17 10:24:18,593 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_get_urb [2022-10-17 10:24:18,593 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_get_urb [2022-10-17 10:24:18,593 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_set_video_mode [2022-10-17 10:24:18,593 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_set_video_mode [2022-10-17 10:24:18,593 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-10-17 10:24:18,594 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-10-17 10:24:18,594 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-10-17 10:24:18,594 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-10-17 10:24:18,594 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_blank [2022-10-17 10:24:18,594 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_blank [2022-10-17 10:24:18,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:24:18,595 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-10-17 10:24:18,595 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-10-17 10:24:18,595 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-10-17 10:24:18,595 INFO L130 BoogieDeclarations]: Found specification of procedure get_cycles [2022-10-17 10:24:18,595 INFO L138 BoogieDeclarations]: Found implementation of procedure get_cycles [2022-10-17 10:24:18,596 INFO L130 BoogieDeclarations]: Found specification of procedure up [2022-10-17 10:24:18,596 INFO L138 BoogieDeclarations]: Found implementation of procedure up [2022-10-17 10:24:18,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 10:24:18,596 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_copyarea [2022-10-17 10:24:18,596 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_copyarea [2022-10-17 10:24:18,596 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-10-17 10:24:18,597 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-10-17 10:24:18,597 INFO L130 BoogieDeclarations]: Found specification of procedure fb_add_videomode [2022-10-17 10:24:18,597 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_add_videomode [2022-10-17 10:24:18,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:24:18,597 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add [2022-10-17 10:24:18,597 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add [2022-10-17 10:24:18,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 10:24:18,598 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-10-17 10:24:18,598 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-10-17 10:24:18,598 INFO L130 BoogieDeclarations]: Found specification of procedure fb_edid_to_monspecs [2022-10-17 10:24:18,598 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_edid_to_monspecs [2022-10-17 10:24:18,598 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-10-17 10:24:18,599 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-10-17 10:24:18,599 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-10-17 10:24:18,599 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-10-17 10:24:18,599 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-10-17 10:24:18,599 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-10-17 10:24:18,599 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_setup_modes [2022-10-17 10:24:18,600 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_setup_modes [2022-10-17 10:24:18,600 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-10-17 10:24:18,600 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-10-17 10:24:18,600 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-10-17 10:24:18,600 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-10-17 10:24:18,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-10-17 10:24:18,601 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-10-17 10:24:18,601 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-10-17 10:24:18,601 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_vidreg_lock [2022-10-17 10:24:18,601 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_vidreg_lock [2022-10-17 10:24:18,601 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-10-17 10:24:18,602 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-10-17 10:24:18,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-17 10:24:18,602 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2022-10-17 10:24:18,602 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2022-10-17 10:24:18,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:24:18,602 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_ioctl [2022-10-17 10:24:18,603 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_ioctl [2022-10-17 10:24:18,603 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_free_framebuffer [2022-10-17 10:24:18,603 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_free_framebuffer [2022-10-17 10:24:18,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-10-17 10:24:18,603 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-10-17 10:24:18,603 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_var_color_format [2022-10-17 10:24:18,604 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_var_color_format [2022-10-17 10:24:18,604 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-10-17 10:24:18,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-10-17 10:24:18,604 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-10-17 10:24:18,604 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-10-17 10:24:18,604 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-10-17 10:24:18,605 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-10-17 10:24:18,605 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-10-17 10:24:18,605 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-10-17 10:24:18,605 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_handle_damage [2022-10-17 10:24:18,605 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_handle_damage [2022-10-17 10:24:18,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:24:18,606 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_render_hline [2022-10-17 10:24:18,606 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_render_hline [2022-10-17 10:24:18,606 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_usb_disconnect [2022-10-17 10:24:18,606 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_usb_disconnect [2022-10-17 10:24:18,606 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-10-17 10:24:18,606 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-10-17 10:24:18,607 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-10-17 10:24:18,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-10-17 10:24:18,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:24:18,607 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_blanking [2022-10-17 10:24:18,607 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_blanking [2022-10-17 10:24:18,607 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_set_register_16 [2022-10-17 10:24:18,608 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_set_register_16 [2022-10-17 10:24:18,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:24:18,608 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_imageblit [2022-10-17 10:24:18,608 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_imageblit [2022-10-17 10:24:18,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 10:24:18,608 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-10-17 10:24:18,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-10-17 10:24:18,609 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_open [2022-10-17 10:24:18,609 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_open [2022-10-17 10:24:18,609 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_set_register [2022-10-17 10:24:18,609 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_set_register [2022-10-17 10:24:18,609 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-10-17 10:24:18,610 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-10-17 10:24:18,610 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-10-17 10:24:18,610 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-10-17 10:24:18,610 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_fb_info [2022-10-17 10:24:18,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_fb_info [2022-10-17 10:24:18,610 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-10-17 10:24:18,611 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-10-17 10:24:18,611 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_init_framebuffer_work [2022-10-17 10:24:18,611 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_init_framebuffer_work [2022-10-17 10:24:18,611 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-10-17 10:24:18,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-10-17 10:24:18,611 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-10-17 10:24:18,611 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-10-17 10:24:18,612 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_set_par [2022-10-17 10:24:18,612 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_set_par [2022-10-17 10:24:18,612 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2022-10-17 10:24:18,612 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2022-10-17 10:24:18,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:24:18,612 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-10-17 10:24:18,613 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-10-17 10:24:18,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:24:18,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:24:19,305 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:24:19,311 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:24:31,176 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:24:31,196 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:24:31,196 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:24:31,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:24:31 BoogieIcfgContainer [2022-10-17 10:24:31,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:24:31,203 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:24:31,203 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:24:31,207 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:24:31,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:24:14" (1/3) ... [2022-10-17 10:24:31,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a41a826 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:24:31, skipping insertion in model container [2022-10-17 10:24:31,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:16" (2/3) ... [2022-10-17 10:24:31,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a41a826 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:24:31, skipping insertion in model container [2022-10-17 10:24:31,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:24:31" (3/3) ... [2022-10-17 10:24:31,210 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--video--udlfb.ko-main.cil.out.i [2022-10-17 10:24:31,228 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:24:31,229 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:24:31,326 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:24:31,336 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6c71bc8a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:24:31,337 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:24:31,349 INFO L276 IsEmpty]: Start isEmpty. Operand has 1138 states, 824 states have (on average 1.3313106796116505) internal successors, (1097), 846 states have internal predecessors, (1097), 239 states have call successors, (239), 73 states have call predecessors, (239), 73 states have return successors, (239), 235 states have call predecessors, (239), 239 states have call successors, (239) [2022-10-17 10:24:31,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-17 10:24:31,371 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:24:31,372 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:24:31,372 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:24:31,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:24:31,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1352960167, now seen corresponding path program 1 times [2022-10-17 10:24:31,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:24:31,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669841846] [2022-10-17 10:24:31,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:24:31,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:24:31,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:31,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:24:31,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:24:31,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669841846] [2022-10-17 10:24:31,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669841846] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:24:31,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:24:31,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:24:31,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866859484] [2022-10-17 10:24:31,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:24:31,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:24:31,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:24:32,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:24:32,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:24:32,039 INFO L87 Difference]: Start difference. First operand has 1138 states, 824 states have (on average 1.3313106796116505) internal successors, (1097), 846 states have internal predecessors, (1097), 239 states have call successors, (239), 73 states have call predecessors, (239), 73 states have return successors, (239), 235 states have call predecessors, (239), 239 states have call successors, (239) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:24:32,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:24:32,385 INFO L93 Difference]: Finished difference Result 3382 states and 4827 transitions. [2022-10-17 10:24:32,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:24:32,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-10-17 10:24:32,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:24:32,435 INFO L225 Difference]: With dead ends: 3382 [2022-10-17 10:24:32,435 INFO L226 Difference]: Without dead ends: 2237 [2022-10-17 10:24:32,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:24:32,457 INFO L413 NwaCegarLoop]: 1788 mSDtfsCounter, 1521 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 3329 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:24:32,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1521 Valid, 3329 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:24:32,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2237 states. [2022-10-17 10:24:32,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2237 to 2233. [2022-10-17 10:24:32,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2233 states, 1617 states have (on average 1.3141620284477427) internal successors, (2125), 1651 states have internal predecessors, (2125), 471 states have call successors, (471), 145 states have call predecessors, (471), 144 states have return successors, (464), 456 states have call predecessors, (464), 464 states have call successors, (464) [2022-10-17 10:24:32,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2233 states to 2233 states and 3060 transitions. [2022-10-17 10:24:32,717 INFO L78 Accepts]: Start accepts. Automaton has 2233 states and 3060 transitions. Word has length 16 [2022-10-17 10:24:32,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:24:32,717 INFO L495 AbstractCegarLoop]: Abstraction has 2233 states and 3060 transitions. [2022-10-17 10:24:32,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:24:32,718 INFO L276 IsEmpty]: Start isEmpty. Operand 2233 states and 3060 transitions. [2022-10-17 10:24:32,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-10-17 10:24:32,727 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:24:32,728 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:24:32,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:24:32,728 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:24:32,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:24:32,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1678789408, now seen corresponding path program 1 times [2022-10-17 10:24:32,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:24:32,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394463271] [2022-10-17 10:24:32,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:24:32,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:24:32,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:32,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:24:32,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:24:32,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394463271] [2022-10-17 10:24:32,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394463271] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:24:32,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:24:32,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:24:32,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263697980] [2022-10-17 10:24:32,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:24:32,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:24:32,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:24:32,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:24:32,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:24:32,946 INFO L87 Difference]: Start difference. First operand 2233 states and 3060 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:24:33,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:24:33,101 INFO L93 Difference]: Finished difference Result 2259 states and 3092 transitions. [2022-10-17 10:24:33,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:24:33,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-10-17 10:24:33,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:24:33,127 INFO L225 Difference]: With dead ends: 2259 [2022-10-17 10:24:33,127 INFO L226 Difference]: Without dead ends: 2246 [2022-10-17 10:24:33,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:24:33,135 INFO L413 NwaCegarLoop]: 1561 mSDtfsCounter, 1541 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1541 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:24:33,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1541 Valid, 1577 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:24:33,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2246 states. [2022-10-17 10:24:33,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2246 to 2233. [2022-10-17 10:24:33,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2233 states, 1617 states have (on average 1.313543599257885) internal successors, (2124), 1651 states have internal predecessors, (2124), 471 states have call successors, (471), 145 states have call predecessors, (471), 144 states have return successors, (464), 456 states have call predecessors, (464), 464 states have call successors, (464) [2022-10-17 10:24:33,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2233 states to 2233 states and 3059 transitions. [2022-10-17 10:24:33,290 INFO L78 Accepts]: Start accepts. Automaton has 2233 states and 3059 transitions. Word has length 19 [2022-10-17 10:24:33,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:24:33,291 INFO L495 AbstractCegarLoop]: Abstraction has 2233 states and 3059 transitions. [2022-10-17 10:24:33,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:24:33,291 INFO L276 IsEmpty]: Start isEmpty. Operand 2233 states and 3059 transitions. [2022-10-17 10:24:33,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-10-17 10:24:33,294 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:24:33,295 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:24:33,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:24:33,295 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:24:33,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:24:33,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1736047710, now seen corresponding path program 1 times [2022-10-17 10:24:33,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:24:33,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21154395] [2022-10-17 10:24:33,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:24:33,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:24:33,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:33,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:24:33,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:24:33,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21154395] [2022-10-17 10:24:33,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21154395] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:24:33,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:24:33,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:24:33,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495922346] [2022-10-17 10:24:33,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:24:33,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:24:33,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:24:33,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:24:33,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:24:33,575 INFO L87 Difference]: Start difference. First operand 2233 states and 3059 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:24:33,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:24:33,746 INFO L93 Difference]: Finished difference Result 2235 states and 3060 transitions. [2022-10-17 10:24:33,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:24:33,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-10-17 10:24:33,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:24:33,764 INFO L225 Difference]: With dead ends: 2235 [2022-10-17 10:24:33,764 INFO L226 Difference]: Without dead ends: 2232 [2022-10-17 10:24:33,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:24:33,768 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 1528 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 1543 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:24:33,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1528 Valid, 1543 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:24:33,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2232 states. [2022-10-17 10:24:33,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2232 to 2232. [2022-10-17 10:24:33,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2232 states, 1617 states have (on average 1.3129251700680271) internal successors, (2123), 1650 states have internal predecessors, (2123), 470 states have call successors, (470), 145 states have call predecessors, (470), 144 states have return successors, (464), 456 states have call predecessors, (464), 464 states have call successors, (464) [2022-10-17 10:24:33,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2232 states to 2232 states and 3057 transitions. [2022-10-17 10:24:33,949 INFO L78 Accepts]: Start accepts. Automaton has 2232 states and 3057 transitions. Word has length 19 [2022-10-17 10:24:33,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:24:33,950 INFO L495 AbstractCegarLoop]: Abstraction has 2232 states and 3057 transitions. [2022-10-17 10:24:33,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:24:33,950 INFO L276 IsEmpty]: Start isEmpty. Operand 2232 states and 3057 transitions. [2022-10-17 10:24:33,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-10-17 10:24:33,952 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:24:33,952 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:24:33,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:24:33,952 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:24:33,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:24:33,953 INFO L85 PathProgramCache]: Analyzing trace with hash -2017571658, now seen corresponding path program 1 times [2022-10-17 10:24:33,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:24:33,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946206120] [2022-10-17 10:24:33,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:24:33,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:24:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:34,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:24:34,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:24:34,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946206120] [2022-10-17 10:24:34,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946206120] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:24:34,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:24:34,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:24:34,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030383687] [2022-10-17 10:24:34,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:24:34,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:24:34,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:24:34,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:24:34,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:24:34,115 INFO L87 Difference]: Start difference. First operand 2232 states and 3057 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:24:34,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:24:34,272 INFO L93 Difference]: Finished difference Result 2234 states and 3058 transitions. [2022-10-17 10:24:34,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:24:34,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-10-17 10:24:34,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:24:34,292 INFO L225 Difference]: With dead ends: 2234 [2022-10-17 10:24:34,293 INFO L226 Difference]: Without dead ends: 2231 [2022-10-17 10:24:34,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:24:34,304 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 1525 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 1541 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:24:34,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1525 Valid, 1541 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:24:34,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2231 states. [2022-10-17 10:24:34,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2231 to 2231. [2022-10-17 10:24:34,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2231 states, 1617 states have (on average 1.3123067408781695) internal successors, (2122), 1649 states have internal predecessors, (2122), 469 states have call successors, (469), 145 states have call predecessors, (469), 144 states have return successors, (464), 456 states have call predecessors, (464), 464 states have call successors, (464) [2022-10-17 10:24:34,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2231 states to 2231 states and 3055 transitions. [2022-10-17 10:24:34,483 INFO L78 Accepts]: Start accepts. Automaton has 2231 states and 3055 transitions. Word has length 20 [2022-10-17 10:24:34,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:24:34,484 INFO L495 AbstractCegarLoop]: Abstraction has 2231 states and 3055 transitions. [2022-10-17 10:24:34,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:24:34,484 INFO L276 IsEmpty]: Start isEmpty. Operand 2231 states and 3055 transitions. [2022-10-17 10:24:34,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-10-17 10:24:34,485 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:24:34,486 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:24:34,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:24:34,486 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:24:34,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:24:34,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1879317089, now seen corresponding path program 1 times [2022-10-17 10:24:34,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:24:34,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749524569] [2022-10-17 10:24:34,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:24:34,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:24:34,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:34,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:24:34,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:24:34,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749524569] [2022-10-17 10:24:34,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749524569] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:24:34,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:24:34,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:24:34,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280776667] [2022-10-17 10:24:34,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:24:34,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:24:34,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:24:34,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:24:34,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:24:34,679 INFO L87 Difference]: Start difference. First operand 2231 states and 3055 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:24:35,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:24:35,011 INFO L93 Difference]: Finished difference Result 6651 states and 9256 transitions. [2022-10-17 10:24:35,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:24:35,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-10-17 10:24:35,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:24:35,051 INFO L225 Difference]: With dead ends: 6651 [2022-10-17 10:24:35,051 INFO L226 Difference]: Without dead ends: 4423 [2022-10-17 10:24:35,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:24:35,064 INFO L413 NwaCegarLoop]: 2102 mSDtfsCounter, 1528 mSDsluCounter, 1536 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 3638 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:24:35,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1528 Valid, 3638 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:24:35,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4423 states. [2022-10-17 10:24:35,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4423 to 4417. [2022-10-17 10:24:35,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4417 states, 3206 states have (on average 1.313162819713038) internal successors, (4210), 3266 states have internal predecessors, (4210), 928 states have call successors, (928), 284 states have call predecessors, (928), 282 states have return successors, (990), 906 states have call predecessors, (990), 922 states have call successors, (990) [2022-10-17 10:24:35,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4417 states to 4417 states and 6128 transitions. [2022-10-17 10:24:35,447 INFO L78 Accepts]: Start accepts. Automaton has 4417 states and 6128 transitions. Word has length 21 [2022-10-17 10:24:35,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:24:35,448 INFO L495 AbstractCegarLoop]: Abstraction has 4417 states and 6128 transitions. [2022-10-17 10:24:35,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:24:35,448 INFO L276 IsEmpty]: Start isEmpty. Operand 4417 states and 6128 transitions. [2022-10-17 10:24:35,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-17 10:24:35,450 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:24:35,450 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:24:35,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:24:35,450 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:24:35,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:24:35,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1871178471, now seen corresponding path program 1 times [2022-10-17 10:24:35,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:24:35,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763775958] [2022-10-17 10:24:35,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:24:35,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:24:35,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:35,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:24:35,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:24:35,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763775958] [2022-10-17 10:24:35,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763775958] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:24:35,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:24:35,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:24:35,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319586936] [2022-10-17 10:24:35,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:24:35,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:24:35,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:24:35,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:24:35,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:24:35,660 INFO L87 Difference]: Start difference. First operand 4417 states and 6128 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:24:35,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:24:35,937 INFO L93 Difference]: Finished difference Result 4419 states and 6129 transitions. [2022-10-17 10:24:35,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:24:35,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-10-17 10:24:35,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:24:35,971 INFO L225 Difference]: With dead ends: 4419 [2022-10-17 10:24:35,971 INFO L226 Difference]: Without dead ends: 4416 [2022-10-17 10:24:35,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:24:35,975 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 1521 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 1539 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:24:35,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1521 Valid, 1539 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:24:35,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4416 states. [2022-10-17 10:24:36,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4416 to 4416. [2022-10-17 10:24:36,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4416 states, 3206 states have (on average 1.3128509045539614) internal successors, (4209), 3265 states have internal predecessors, (4209), 927 states have call successors, (927), 284 states have call predecessors, (927), 282 states have return successors, (990), 906 states have call predecessors, (990), 922 states have call successors, (990) [2022-10-17 10:24:36,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4416 states to 4416 states and 6126 transitions. [2022-10-17 10:24:36,335 INFO L78 Accepts]: Start accepts. Automaton has 4416 states and 6126 transitions. Word has length 22 [2022-10-17 10:24:36,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:24:36,339 INFO L495 AbstractCegarLoop]: Abstraction has 4416 states and 6126 transitions. [2022-10-17 10:24:36,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:24:36,341 INFO L276 IsEmpty]: Start isEmpty. Operand 4416 states and 6126 transitions. [2022-10-17 10:24:36,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-17 10:24:36,343 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:24:36,344 INFO L195 NwaCegarLoop]: 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] [2022-10-17 10:24:36,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:24:36,344 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:24:36,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:24:36,345 INFO L85 PathProgramCache]: Analyzing trace with hash 2122548324, now seen corresponding path program 1 times [2022-10-17 10:24:36,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:24:36,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826054286] [2022-10-17 10:24:36,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:24:36,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:24:36,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:36,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:24:36,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:24:36,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826054286] [2022-10-17 10:24:36,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826054286] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:24:36,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:24:36,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:24:36,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348120200] [2022-10-17 10:24:36,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:24:36,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:24:36,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:24:36,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:24:36,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:24:36,501 INFO L87 Difference]: Start difference. First operand 4416 states and 6126 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:24:36,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:24:36,861 INFO L93 Difference]: Finished difference Result 4418 states and 6127 transitions. [2022-10-17 10:24:36,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:24:36,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-10-17 10:24:36,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:24:36,895 INFO L225 Difference]: With dead ends: 4418 [2022-10-17 10:24:36,895 INFO L226 Difference]: Without dead ends: 4406 [2022-10-17 10:24:36,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:24:36,899 INFO L413 NwaCegarLoop]: 1538 mSDtfsCounter, 1518 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1518 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:24:36,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1518 Valid, 1538 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:24:36,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4406 states. [2022-10-17 10:24:37,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4406 to 4406. [2022-10-17 10:24:37,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4406 states, 3197 states have (on average 1.3127932436659369) internal successors, (4197), 3255 states have internal predecessors, (4197), 926 states have call successors, (926), 284 states have call predecessors, (926), 282 states have return successors, (990), 906 states have call predecessors, (990), 922 states have call successors, (990) [2022-10-17 10:24:37,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4406 states to 4406 states and 6113 transitions. [2022-10-17 10:24:37,248 INFO L78 Accepts]: Start accepts. Automaton has 4406 states and 6113 transitions. Word has length 23 [2022-10-17 10:24:37,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:24:37,249 INFO L495 AbstractCegarLoop]: Abstraction has 4406 states and 6113 transitions. [2022-10-17 10:24:37,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:24:37,250 INFO L276 IsEmpty]: Start isEmpty. Operand 4406 states and 6113 transitions. [2022-10-17 10:24:37,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-10-17 10:24:37,256 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:24:37,257 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:24:37,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:24:37,257 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:24:37,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:24:37,258 INFO L85 PathProgramCache]: Analyzing trace with hash 845646919, now seen corresponding path program 1 times [2022-10-17 10:24:37,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:24:37,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047108559] [2022-10-17 10:24:37,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:24:37,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:24:37,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:37,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-17 10:24:37,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:37,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:24:37,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:37,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-17 10:24:37,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:37,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:24:37,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:37,475 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-17 10:24:37,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:24:37,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047108559] [2022-10-17 10:24:37,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047108559] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:24:37,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:24:37,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:24:37,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538695576] [2022-10-17 10:24:37,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:24:37,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:24:37,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:24:37,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:24:37,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:24:37,478 INFO L87 Difference]: Start difference. First operand 4406 states and 6113 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-17 10:24:39,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []