./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ntdrivers/cdaudio.i.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_d742e816-4a3e-4c92-a4f4-66e5ec7626f1/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d742e816-4a3e-4c92-a4f4-66e5ec7626f1/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_d742e816-4a3e-4c92-a4f4-66e5ec7626f1/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d742e816-4a3e-4c92-a4f4-66e5ec7626f1/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ntdrivers/cdaudio.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d742e816-4a3e-4c92-a4f4-66e5ec7626f1/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d742e816-4a3e-4c92-a4f4-66e5ec7626f1/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 32bit --witnessprinter.graph.data.programhash 158aa30053f80b6c80bcbeac6f52ce0f8b5c03af85b763fe7e9897c790504a73 --- 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 10:31:57,721 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:31:57,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:31:57,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:31:57,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:31:57,791 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:31:57,795 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:31:57,802 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:31:57,805 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:31:57,813 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:31:57,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:31:57,815 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:31:57,817 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:31:57,819 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:31:57,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:31:57,824 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:31:57,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:31:57,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:31:57,830 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:31:57,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:31:57,843 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:31:57,845 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:31:57,849 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:31:57,851 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:31:57,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:31:57,857 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:31:57,858 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:31:57,860 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:31:57,861 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:31:57,876 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:31:57,877 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:31:57,878 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:31:57,881 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:31:57,882 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:31:57,884 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:31:57,884 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:31:57,885 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:31:57,885 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:31:57,886 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:31:57,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:31:57,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:31:57,889 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d742e816-4a3e-4c92-a4f4-66e5ec7626f1/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:31:57,958 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:31:57,958 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:31:57,959 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:31:57,959 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:31:57,961 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:31:57,961 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:31:57,962 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:31:57,962 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:31:57,963 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:31:57,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:31:57,965 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:31:57,965 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:31:57,965 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:31:57,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:31:57,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:31:57,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:31:57,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:31:57,967 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:31:57,967 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:31:57,967 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:31:57,968 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:31:57,968 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:31:57,968 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:31:57,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:31:57,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:31:57,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:31:57,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:31:57,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:31:57,970 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:31:57,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:31:57,971 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:31:57,971 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:31:57,972 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:31:57,972 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_d742e816-4a3e-4c92-a4f4-66e5ec7626f1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d742e816-4a3e-4c92-a4f4-66e5ec7626f1/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 158aa30053f80b6c80bcbeac6f52ce0f8b5c03af85b763fe7e9897c790504a73 [2022-10-17 10:31:58,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:31:58,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:31:58,367 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:31:58,369 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:31:58,370 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:31:58,371 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d742e816-4a3e-4c92-a4f4-66e5ec7626f1/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/ntdrivers/cdaudio.i.cil-2.c [2022-10-17 10:31:58,453 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d742e816-4a3e-4c92-a4f4-66e5ec7626f1/bin/uautomizer-J5u9QxTXDZ/data/f05c8b79b/83b6ecfe8ab047b5a43d3c611aa802dd/FLAG45a18a346 [2022-10-17 10:31:59,475 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:31:59,477 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d742e816-4a3e-4c92-a4f4-66e5ec7626f1/sv-benchmarks/c/ntdrivers/cdaudio.i.cil-2.c [2022-10-17 10:31:59,537 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d742e816-4a3e-4c92-a4f4-66e5ec7626f1/bin/uautomizer-J5u9QxTXDZ/data/f05c8b79b/83b6ecfe8ab047b5a43d3c611aa802dd/FLAG45a18a346 [2022-10-17 10:31:59,926 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d742e816-4a3e-4c92-a4f4-66e5ec7626f1/bin/uautomizer-J5u9QxTXDZ/data/f05c8b79b/83b6ecfe8ab047b5a43d3c611aa802dd [2022-10-17 10:31:59,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:31:59,931 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:31:59,932 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:31:59,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:31:59,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:31:59,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:31:59" (1/1) ... [2022-10-17 10:31:59,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57d2ae64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:31:59, skipping insertion in model container [2022-10-17 10:31:59,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:31:59" (1/1) ... [2022-10-17 10:31:59,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:32:00,069 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:32:00,982 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_d742e816-4a3e-4c92-a4f4-66e5ec7626f1/sv-benchmarks/c/ntdrivers/cdaudio.i.cil-2.c[90200,90213] [2022-10-17 10:32:01,951 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:32:01,963 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:32:02,105 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_d742e816-4a3e-4c92-a4f4-66e5ec7626f1/sv-benchmarks/c/ntdrivers/cdaudio.i.cil-2.c[90200,90213] [2022-10-17 10:32:02,612 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:32:02,655 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:32:02,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:32:02 WrapperNode [2022-10-17 10:32:02,656 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:32:02,658 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:32:02,658 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:32:02,658 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:32:02,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:32:02" (1/1) ... [2022-10-17 10:32:02,809 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:32:02" (1/1) ... [2022-10-17 10:32:02,948 INFO L138 Inliner]: procedures = 121, calls = 2189, calls flagged for inlining = 23, calls inlined = 19, statements flattened = 2294 [2022-10-17 10:32:02,949 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:32:02,950 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:32:02,950 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:32:02,950 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:32:02,960 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:32:02" (1/1) ... [2022-10-17 10:32:02,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:32:02" (1/1) ... [2022-10-17 10:32:02,991 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:32:02" (1/1) ... [2022-10-17 10:32:02,997 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:32:02" (1/1) ... [2022-10-17 10:32:03,135 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:32:02" (1/1) ... [2022-10-17 10:32:03,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:32:02" (1/1) ... [2022-10-17 10:32:03,194 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:32:02" (1/1) ... [2022-10-17 10:32:03,218 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:32:02" (1/1) ... [2022-10-17 10:32:03,244 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:32:03,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:32:03,246 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:32:03,247 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:32:03,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:32:02" (1/1) ... [2022-10-17 10:32:03,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:32:03,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d742e816-4a3e-4c92-a4f4-66e5ec7626f1/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:32:03,286 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d742e816-4a3e-4c92-a4f4-66e5ec7626f1/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:32:03,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d742e816-4a3e-4c92-a4f4-66e5ec7626f1/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:32:03,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-17 10:32:03,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-17 10:32:03,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-17 10:32:03,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:32:03,347 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-10-17 10:32:03,347 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-10-17 10:32:03,347 INFO L130 BoogieDeclarations]: Found specification of procedure MmLockPagableDataSection [2022-10-17 10:32:03,347 INFO L138 BoogieDeclarations]: Found implementation of procedure MmLockPagableDataSection [2022-10-17 10:32:03,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:32:03,348 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioIsPlayActive [2022-10-17 10:32:03,348 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioIsPlayActive [2022-10-17 10:32:03,348 INFO L130 BoogieDeclarations]: Found specification of procedure IoOpenDeviceRegistryKey [2022-10-17 10:32:03,348 INFO L138 BoogieDeclarations]: Found implementation of procedure IoOpenDeviceRegistryKey [2022-10-17 10:32:03,348 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-10-17 10:32:03,349 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-10-17 10:32:03,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-10-17 10:32:03,349 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-10-17 10:32:03,349 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_malloc [2022-10-17 10:32:03,349 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_malloc [2022-10-17 10:32:03,350 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-10-17 10:32:03,350 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-10-17 10:32:03,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:32:03,350 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-10-17 10:32:03,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-10-17 10:32:03,351 INFO L130 BoogieDeclarations]: Found specification of procedure SendSrbSynchronous [2022-10-17 10:32:03,351 INFO L138 BoogieDeclarations]: Found implementation of procedure SendSrbSynchronous [2022-10-17 10:32:03,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:32:03,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 10:32:03,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:32:03,352 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-10-17 10:32:03,352 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-10-17 10:32:03,352 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-10-17 10:32:03,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 10:32:03,353 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-10-17 10:32:03,353 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-10-17 10:32:03,353 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSignalCompletion [2022-10-17 10:32:03,354 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSignalCompletion [2022-10-17 10:32:03,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:32:03,354 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-10-17 10:32:03,354 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-10-17 10:32:03,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-10-17 10:32:03,355 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-10-17 10:32:03,355 INFO L130 BoogieDeclarations]: Found specification of procedure HPCdrCompletion [2022-10-17 10:32:03,355 INFO L138 BoogieDeclarations]: Found implementation of procedure HPCdrCompletion [2022-10-17 10:32:03,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:32:03,356 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSendToNextDriver [2022-10-17 10:32:03,356 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSendToNextDriver [2022-10-17 10:32:03,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-10-17 10:32:03,356 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-10-17 10:32:03,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-10-17 10:32:03,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:32:03,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:32:03,358 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioForwardIrpSynchronous [2022-10-17 10:32:03,358 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioForwardIrpSynchronous [2022-10-17 10:32:04,022 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:32:04,025 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:32:04,447 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-17 10:32:04,474 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-10-17 10:32:04,480 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-10-17 10:32:05,031 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-17 10:32:05,079 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-10-17 10:32:05,080 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-10-17 10:32:05,120 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-17 10:32:05,123 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-17 10:32:05,127 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-17 10:32:05,149 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-17 10:32:05,165 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-17 10:32:05,176 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-17 10:32:19,891 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##258: assume false; [2022-10-17 10:32:19,891 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##259: assume !false; [2022-10-17 10:32:19,891 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##485: assume false; [2022-10-17 10:32:19,891 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##486: assume !false; [2022-10-17 10:32:19,892 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3709: CdAudioPnp_#res#1 := 0; [2022-10-17 10:32:19,892 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume !false; [2022-10-17 10:32:19,892 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##46: assume false; [2022-10-17 10:32:19,892 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume !false; [2022-10-17 10:32:19,892 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume false; [2022-10-17 10:32:19,892 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2022-10-17 10:32:19,892 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##154: assume !false; [2022-10-17 10:32:19,892 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##153: assume false; [2022-10-17 10:32:19,892 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2022-10-17 10:32:19,930 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-17 10:32:19,937 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-10-17 10:32:19,938 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-10-17 10:32:19,997 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:32:20,022 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:32:20,023 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-10-17 10:32:20,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:32:20 BoogieIcfgContainer [2022-10-17 10:32:20,027 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:32:20,031 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:32:20,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:32:20,036 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:32:20,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:31:59" (1/3) ... [2022-10-17 10:32:20,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@648b4236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:32:20, skipping insertion in model container [2022-10-17 10:32:20,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:32:02" (2/3) ... [2022-10-17 10:32:20,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@648b4236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:32:20, skipping insertion in model container [2022-10-17 10:32:20,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:32:20" (3/3) ... [2022-10-17 10:32:20,048 INFO L112 eAbstractionObserver]: Analyzing ICFG cdaudio.i.cil-2.c [2022-10-17 10:32:20,072 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:32:20,072 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:32:20,189 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:32:20,197 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;@6d8dbd27, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:32:20,197 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:32:20,206 INFO L276 IsEmpty]: Start isEmpty. Operand has 617 states, 483 states have (on average 1.525879917184265) internal successors, (737), 502 states have internal predecessors, (737), 113 states have call successors, (113), 19 states have call predecessors, (113), 19 states have return successors, (113), 108 states have call predecessors, (113), 113 states have call successors, (113) [2022-10-17 10:32:20,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-17 10:32:20,215 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:32:20,216 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:32:20,217 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:32:20,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:32:20,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1346091919, now seen corresponding path program 1 times [2022-10-17 10:32:20,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:32:20,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883248903] [2022-10-17 10:32:20,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:32:20,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:32:20,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:20,835 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 10:32:20,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:32:20,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883248903] [2022-10-17 10:32:20,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883248903] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:32:20,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:32:20,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:32:20,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414943206] [2022-10-17 10:32:20,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:32:20,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:32:20,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:32:20,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:32:20,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:32:20,882 INFO L87 Difference]: Start difference. First operand has 617 states, 483 states have (on average 1.525879917184265) internal successors, (737), 502 states have internal predecessors, (737), 113 states have call successors, (113), 19 states have call predecessors, (113), 19 states have return successors, (113), 108 states have call predecessors, (113), 113 states have call successors, (113) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 10:32:21,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:32:21,268 INFO L93 Difference]: Finished difference Result 1094 states and 1737 transitions. [2022-10-17 10:32:21,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:32:21,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 13 [2022-10-17 10:32:21,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:32:21,297 INFO L225 Difference]: With dead ends: 1094 [2022-10-17 10:32:21,297 INFO L226 Difference]: Without dead ends: 610 [2022-10-17 10:32:21,310 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 10:32:21,315 INFO L413 NwaCegarLoop]: 928 mSDtfsCounter, 8 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1807 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:32:21,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1807 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:32:21,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2022-10-17 10:32:21,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 610. [2022-10-17 10:32:21,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 478 states have (on average 1.4832635983263598) internal successors, (709), 495 states have internal predecessors, (709), 113 states have call successors, (113), 19 states have call predecessors, (113), 18 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) [2022-10-17 10:32:21,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 919 transitions. [2022-10-17 10:32:21,461 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 919 transitions. Word has length 13 [2022-10-17 10:32:21,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:32:21,462 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 919 transitions. [2022-10-17 10:32:21,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 10:32:21,464 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 919 transitions. [2022-10-17 10:32:21,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-17 10:32:21,465 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:32:21,466 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:32:21,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:32:21,466 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:32:21,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:32:21,468 INFO L85 PathProgramCache]: Analyzing trace with hash 503268838, now seen corresponding path program 1 times [2022-10-17 10:32:21,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:32:21,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320027693] [2022-10-17 10:32:21,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:32:21,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:32:21,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:21,776 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 10:32:21,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:32:21,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320027693] [2022-10-17 10:32:21,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320027693] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:32:21,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:32:21,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:32:21,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212078922] [2022-10-17 10:32:21,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:32:21,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:32:21,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:32:21,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:32:21,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:32:21,782 INFO L87 Difference]: Start difference. First operand 610 states and 919 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 10:32:22,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:32:22,096 INFO L93 Difference]: Finished difference Result 1141 states and 1702 transitions. [2022-10-17 10:32:22,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:32:22,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 15 [2022-10-17 10:32:22,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:32:22,114 INFO L225 Difference]: With dead ends: 1141 [2022-10-17 10:32:22,114 INFO L226 Difference]: Without dead ends: 891 [2022-10-17 10:32:22,125 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 10:32:22,127 INFO L413 NwaCegarLoop]: 1253 mSDtfsCounter, 833 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:32:22,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [833 Valid, 1678 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:32:22,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2022-10-17 10:32:22,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 871. [2022-10-17 10:32:22,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 871 states, 696 states have (on average 1.4612068965517242) internal successors, (1017), 699 states have internal predecessors, (1017), 142 states have call successors, (142), 33 states have call predecessors, (142), 32 states have return successors, (146), 140 states have call predecessors, (146), 130 states have call successors, (146) [2022-10-17 10:32:22,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 1305 transitions. [2022-10-17 10:32:22,220 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 1305 transitions. Word has length 15 [2022-10-17 10:32:22,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:32:22,220 INFO L495 AbstractCegarLoop]: Abstraction has 871 states and 1305 transitions. [2022-10-17 10:32:22,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 10:32:22,221 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 1305 transitions. [2022-10-17 10:32:22,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-17 10:32:22,224 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:32:22,224 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 10:32:22,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:32:22,224 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:32:22,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:32:22,225 INFO L85 PathProgramCache]: Analyzing trace with hash -485834161, now seen corresponding path program 1 times [2022-10-17 10:32:22,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:32:22,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415948347] [2022-10-17 10:32:22,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:32:22,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:32:22,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:22,378 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 10:32:22,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:32:22,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415948347] [2022-10-17 10:32:22,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415948347] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:32:22,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:32:22,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:32:22,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231233727] [2022-10-17 10:32:22,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:32:22,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:32:22,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:32:22,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:32:22,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:32:22,381 INFO L87 Difference]: Start difference. First operand 871 states and 1305 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:32:22,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:32:22,643 INFO L93 Difference]: Finished difference Result 1865 states and 2854 transitions. [2022-10-17 10:32:22,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:32:22,644 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 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 10:32:22,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:32:22,665 INFO L225 Difference]: With dead ends: 1865 [2022-10-17 10:32:22,665 INFO L226 Difference]: Without dead ends: 1453 [2022-10-17 10:32:22,670 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 10:32:22,676 INFO L413 NwaCegarLoop]: 1451 mSDtfsCounter, 586 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 2316 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:32:22,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [586 Valid, 2316 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:32:22,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2022-10-17 10:32:22,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1050. [2022-10-17 10:32:22,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1050 states, 833 states have (on average 1.446578631452581) internal successors, (1205), 835 states have internal predecessors, (1205), 170 states have call successors, (170), 46 states have call predecessors, (170), 46 states have return successors, (217), 170 states have call predecessors, (217), 158 states have call successors, (217) [2022-10-17 10:32:22,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1592 transitions. [2022-10-17 10:32:22,809 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1592 transitions. Word has length 22 [2022-10-17 10:32:22,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:32:22,811 INFO L495 AbstractCegarLoop]: Abstraction has 1050 states and 1592 transitions. [2022-10-17 10:32:22,811 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:32:22,811 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1592 transitions. [2022-10-17 10:32:22,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-17 10:32:22,819 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:32:22,820 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 10:32:22,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:32:22,820 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:32:22,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:32:22,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1681895330, now seen corresponding path program 1 times [2022-10-17 10:32:22,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:32:22,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696968145] [2022-10-17 10:32:22,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:32:22,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:32:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:23,217 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 10:32:23,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:32:23,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696968145] [2022-10-17 10:32:23,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696968145] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:32:23,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:32:23,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:32:23,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798822190] [2022-10-17 10:32:23,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:32:23,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:32:23,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:32:23,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:32:23,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:32:23,229 INFO L87 Difference]: Start difference. First operand 1050 states and 1592 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, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:32:23,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:32:23,359 INFO L93 Difference]: Finished difference Result 1728 states and 2570 transitions. [2022-10-17 10:32:23,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:32:23,360 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, (2), 1 states have call predecessors, (2), 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 10:32:23,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:32:23,376 INFO L225 Difference]: With dead ends: 1728 [2022-10-17 10:32:23,377 INFO L226 Difference]: Without dead ends: 1595 [2022-10-17 10:32:23,378 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 10:32:23,387 INFO L413 NwaCegarLoop]: 1131 mSDtfsCounter, 836 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:32:23,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 1540 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:32:23,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1595 states. [2022-10-17 10:32:23,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1595 to 1533. [2022-10-17 10:32:23,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1533 states, 1229 states have (on average 1.4475183075671278) internal successors, (1779), 1227 states have internal predecessors, (1779), 227 states have call successors, (227), 72 states have call predecessors, (227), 76 states have return successors, (298), 233 states have call predecessors, (298), 218 states have call successors, (298) [2022-10-17 10:32:23,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1533 states to 1533 states and 2304 transitions. [2022-10-17 10:32:23,530 INFO L78 Accepts]: Start accepts. Automaton has 1533 states and 2304 transitions. Word has length 22 [2022-10-17 10:32:23,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:32:23,530 INFO L495 AbstractCegarLoop]: Abstraction has 1533 states and 2304 transitions. [2022-10-17 10:32:23,531 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, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:32:23,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1533 states and 2304 transitions. [2022-10-17 10:32:23,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-17 10:32:23,534 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:32:23,535 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 10:32:23,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:32:23,536 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:32:23,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:32:23,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1879986928, now seen corresponding path program 1 times [2022-10-17 10:32:23,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:32:23,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929045131] [2022-10-17 10:32:23,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:32:23,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:32:23,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:23,828 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 10:32:23,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:32:23,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929045131] [2022-10-17 10:32:23,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929045131] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:32:23,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:32:23,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:32:23,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208883662] [2022-10-17 10:32:23,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:32:23,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:32:23,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:32:23,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:32:23,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:32:23,832 INFO L87 Difference]: Start difference. First operand 1533 states and 2304 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:32:24,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:32:24,744 INFO L93 Difference]: Finished difference Result 2744 states and 4158 transitions. [2022-10-17 10:32:24,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:32:24,745 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 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 10:32:24,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:32:24,761 INFO L225 Difference]: With dead ends: 2744 [2022-10-17 10:32:24,761 INFO L226 Difference]: Without dead ends: 1832 [2022-10-17 10:32:24,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:32:24,766 INFO L413 NwaCegarLoop]: 1164 mSDtfsCounter, 1440 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 346 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1442 SdHoareTripleChecker+Valid, 1463 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 346 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-17 10:32:24,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1442 Valid, 1463 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [346 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-17 10:32:24,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1832 states. [2022-10-17 10:32:24,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1832 to 1521. [2022-10-17 10:32:24,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1521 states, 1219 states have (on average 1.4446267432321576) internal successors, (1761), 1217 states have internal predecessors, (1761), 225 states have call successors, (225), 70 states have call predecessors, (225), 76 states have return successors, (294), 233 states have call predecessors, (294), 216 states have call successors, (294) [2022-10-17 10:32:24,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 2280 transitions. [2022-10-17 10:32:24,951 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 2280 transitions. Word has length 23 [2022-10-17 10:32:24,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:32:24,951 INFO L495 AbstractCegarLoop]: Abstraction has 1521 states and 2280 transitions. [2022-10-17 10:32:24,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:32:24,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 2280 transitions. [2022-10-17 10:32:24,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-17 10:32:24,953 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:32:24,953 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 10:32:24,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:32:24,954 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:32:24,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:32:24,954 INFO L85 PathProgramCache]: Analyzing trace with hash 405401967, now seen corresponding path program 1 times [2022-10-17 10:32:24,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:32:24,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856652520] [2022-10-17 10:32:24,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:32:24,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:32:25,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:25,115 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 10:32:25,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:32:25,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856652520] [2022-10-17 10:32:25,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856652520] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:32:25,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:32:25,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:32:25,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838476064] [2022-10-17 10:32:25,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:32:25,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:32:25,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:32:25,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:32:25,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:32:25,118 INFO L87 Difference]: Start difference. First operand 1521 states and 2280 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 10:32:25,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:32:25,296 INFO L93 Difference]: Finished difference Result 1524 states and 2282 transitions. [2022-10-17 10:32:25,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:32:25,297 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 10:32:25,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:32:25,309 INFO L225 Difference]: With dead ends: 1524 [2022-10-17 10:32:25,310 INFO L226 Difference]: Without dead ends: 1520 [2022-10-17 10:32:25,311 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 10:32:25,312 INFO L413 NwaCegarLoop]: 878 mSDtfsCounter, 22 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1711 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:32:25,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 1711 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:32:25,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2022-10-17 10:32:25,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1520. [2022-10-17 10:32:25,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1520 states, 1219 states have (on average 1.44298605414274) internal successors, (1759), 1216 states have internal predecessors, (1759), 224 states have call successors, (224), 70 states have call predecessors, (224), 76 states have return successors, (294), 233 states have call predecessors, (294), 216 states have call successors, (294) [2022-10-17 10:32:25,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1520 states to 1520 states and 2277 transitions. [2022-10-17 10:32:25,441 INFO L78 Accepts]: Start accepts. Automaton has 1520 states and 2277 transitions. Word has length 22 [2022-10-17 10:32:25,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:32:25,441 INFO L495 AbstractCegarLoop]: Abstraction has 1520 states and 2277 transitions. [2022-10-17 10:32:25,441 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 10:32:25,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1520 states and 2277 transitions. [2022-10-17 10:32:25,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-10-17 10:32:25,445 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:32:25,445 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:32:25,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:32:25,445 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:32:25,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:32:25,446 INFO L85 PathProgramCache]: Analyzing trace with hash -605609214, now seen corresponding path program 1 times [2022-10-17 10:32:25,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:32:25,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595266588] [2022-10-17 10:32:25,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:32:25,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:32:25,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:25,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-10-17 10:32:25,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:32:25,767 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 10:32:25,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:32:25,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595266588] [2022-10-17 10:32:25,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595266588] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:32:25,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:32:25,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:32:25,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182890188] [2022-10-17 10:32:25,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:32:25,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:32:25,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:32:25,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:32:25,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:32:25,771 INFO L87 Difference]: Start difference. First operand 1520 states and 2277 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)