./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.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_af684b8e-ad37-4885-b754-b46840f7e321/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af684b8e-ad37-4885-b754-b46840f7e321/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_af684b8e-ad37-4885-b754-b46840f7e321/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af684b8e-ad37-4885-b754-b46840f7e321/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af684b8e-ad37-4885-b754-b46840f7e321/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_af684b8e-ad37-4885-b754-b46840f7e321/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 2eef4809e0fb5b801f2479dfde07a6f5e1ac3784201f878d167f0654e03bdeae --- 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 10:24:22,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:24:22,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:24:22,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:24:22,658 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:24:22,660 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:24:22,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:24:22,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:24:22,666 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:24:22,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:24:22,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:24:22,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:24:22,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:24:22,671 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:24:22,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:24:22,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:24:22,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:24:22,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:24:22,679 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:24:22,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:24:22,683 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:24:22,692 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:24:22,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:24:22,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:24:22,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:24:22,708 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:24:22,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:24:22,709 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:24:22,711 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:24:22,712 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:24:22,713 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:24:22,714 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:24:22,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:24:22,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:24:22,719 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:24:22,719 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:24:22,720 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:24:22,721 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:24:22,721 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:24:22,722 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:24:22,723 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:24:22,723 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af684b8e-ad37-4885-b754-b46840f7e321/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-10-17 10:24:22,777 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:24:22,781 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:24:22,782 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:24:22,782 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:24:22,783 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:24:22,784 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:24:22,784 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:24:22,785 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:24:22,785 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:24:22,785 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:24:22,786 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:24:22,786 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:24:22,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:24:22,787 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:24:22,787 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:24:22,787 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:24:22,788 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:24:22,788 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:24:22,788 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:24:22,788 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:24:22,789 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:24:22,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:24:22,789 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:24:22,789 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:24:22,790 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:24:22,795 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:24:22,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:24:22,796 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:24:22,796 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:24:22,796 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:24:22,797 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_af684b8e-ad37-4885-b754-b46840f7e321/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af684b8e-ad37-4885-b754-b46840f7e321/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2eef4809e0fb5b801f2479dfde07a6f5e1ac3784201f878d167f0654e03bdeae [2022-10-17 10:24:23,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:24:23,118 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:24:23,121 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:24:23,122 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:24:23,123 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:24:23,124 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af684b8e-ad37-4885-b754-b46840f7e321/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i [2022-10-17 10:24:23,201 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af684b8e-ad37-4885-b754-b46840f7e321/bin/uautomizer-J5u9QxTXDZ/data/f6a8c7012/0568eb7e71bd43a7812273f8dfeae8de/FLAGafccdb133 [2022-10-17 10:24:24,098 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:24:24,099 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af684b8e-ad37-4885-b754-b46840f7e321/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i [2022-10-17 10:24:24,154 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af684b8e-ad37-4885-b754-b46840f7e321/bin/uautomizer-J5u9QxTXDZ/data/f6a8c7012/0568eb7e71bd43a7812273f8dfeae8de/FLAGafccdb133 [2022-10-17 10:24:24,595 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af684b8e-ad37-4885-b754-b46840f7e321/bin/uautomizer-J5u9QxTXDZ/data/f6a8c7012/0568eb7e71bd43a7812273f8dfeae8de [2022-10-17 10:24:24,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:24:24,599 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:24:24,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:24:24,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:24:24,604 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:24:24,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:24:24" (1/1) ... [2022-10-17 10:24:24,606 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c3436df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:24, skipping insertion in model container [2022-10-17 10:24:24,606 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:24:24" (1/1) ... [2022-10-17 10:24:24,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:24:24,754 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:24:26,999 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_af684b8e-ad37-4885-b754-b46840f7e321/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i[269371,269384] [2022-10-17 10:24:27,100 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:24:27,127 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:24:27,662 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_af684b8e-ad37-4885-b754-b46840f7e321/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i[269371,269384] [2022-10-17 10:24:27,682 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:24:27,799 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:24:27,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:27 WrapperNode [2022-10-17 10:24:27,800 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:24:27,801 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:24:27,802 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:24:27,802 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:24:27,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:27" (1/1) ... [2022-10-17 10:24:27,973 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:27" (1/1) ... [2022-10-17 10:24:28,332 INFO L138 Inliner]: procedures = 282, calls = 3066, calls flagged for inlining = 129, calls inlined = 120, statements flattened = 6882 [2022-10-17 10:24:28,332 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:24:28,333 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:24:28,333 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:24:28,334 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:24:28,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:27" (1/1) ... [2022-10-17 10:24:28,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:27" (1/1) ... [2022-10-17 10:24:28,466 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:27" (1/1) ... [2022-10-17 10:24:28,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:27" (1/1) ... [2022-10-17 10:24:28,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:27" (1/1) ... [2022-10-17 10:24:28,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:27" (1/1) ... [2022-10-17 10:24:28,962 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:27" (1/1) ... [2022-10-17 10:24:29,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:27" (1/1) ... [2022-10-17 10:24:29,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:24:29,137 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:24:29,137 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:24:29,137 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:24:29,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:27" (1/1) ... [2022-10-17 10:24:29,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:24:29,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af684b8e-ad37-4885-b754-b46840f7e321/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:24:29,220 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af684b8e-ad37-4885-b754-b46840f7e321/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:24:29,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af684b8e-ad37-4885-b754-b46840f7e321/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:24:29,270 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2022-10-17 10:24:29,271 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_del [2022-10-17 10:24:29,271 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_del [2022-10-17 10:24:29,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-17 10:24:29,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-17 10:24:29,271 INFO L130 BoogieDeclarations]: Found specification of procedure driver_remove_file [2022-10-17 10:24:29,271 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_remove_file [2022-10-17 10:24:29,271 INFO L130 BoogieDeclarations]: Found specification of procedure find_partition [2022-10-17 10:24:29,271 INFO L138 BoogieDeclarations]: Found implementation of procedure find_partition [2022-10-17 10:24:29,272 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2022-10-17 10:24:29,272 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2022-10-17 10:24:29,272 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_block_when_processing_errors [2022-10-17 10:24:29,272 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_block_when_processing_errors [2022-10-17 10:24:29,272 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-10-17 10:24:29,272 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-10-17 10:24:29,272 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-10-17 10:24:29,272 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-10-17 10:24:29,273 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-17 10:24:29,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-17 10:24:29,273 INFO L130 BoogieDeclarations]: Found specification of procedure class_unregister [2022-10-17 10:24:29,273 INFO L138 BoogieDeclarations]: Found implementation of procedure class_unregister [2022-10-17 10:24:29,273 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-10-17 10:24:29,273 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-10-17 10:24:29,273 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-17 10:24:29,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-17 10:24:29,274 INFO L130 BoogieDeclarations]: Found specification of procedure tape_name [2022-10-17 10:24:29,274 INFO L138 BoogieDeclarations]: Found implementation of procedure tape_name [2022-10-17 10:24:29,274 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-10-17 10:24:29,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-10-17 10:24:29,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-10-17 10:24:29,274 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-10-17 10:24:29,274 INFO L130 BoogieDeclarations]: Found specification of procedure st_int_ioctl [2022-10-17 10:24:29,274 INFO L138 BoogieDeclarations]: Found implementation of procedure st_int_ioctl [2022-10-17 10:24:29,275 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_rq_timeout [2022-10-17 10:24:29,275 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_rq_timeout [2022-10-17 10:24:29,275 INFO L130 BoogieDeclarations]: Found specification of procedure set_mode_densblk [2022-10-17 10:24:29,275 INFO L138 BoogieDeclarations]: Found implementation of procedure set_mode_densblk [2022-10-17 10:24:29,275 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-10-17 10:24:29,275 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-10-17 10:24:29,275 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_ioctl [2022-10-17 10:24:29,275 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_ioctl [2022-10-17 10:24:29,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:24:29,276 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_st_ref_mutex [2022-10-17 10:24:29,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_st_ref_mutex [2022-10-17 10:24:29,276 INFO L130 BoogieDeclarations]: Found specification of procedure read_mode_page [2022-10-17 10:24:29,276 INFO L138 BoogieDeclarations]: Found implementation of procedure read_mode_page [2022-10-17 10:24:29,276 INFO L130 BoogieDeclarations]: Found specification of procedure do_door_lock [2022-10-17 10:24:29,276 INFO L138 BoogieDeclarations]: Found implementation of procedure do_door_lock [2022-10-17 10:24:29,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 10:24:29,277 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2022-10-17 10:24:29,277 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2022-10-17 10:24:29,277 INFO L130 BoogieDeclarations]: Found specification of procedure st_do_scsi [2022-10-17 10:24:29,277 INFO L138 BoogieDeclarations]: Found implementation of procedure st_do_scsi [2022-10-17 10:24:29,277 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-10-17 10:24:29,277 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2022-10-17 10:24:29,277 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2022-10-17 10:24:29,277 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2022-10-17 10:24:29,278 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2022-10-17 10:24:29,278 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2022-10-17 10:24:29,278 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2022-10-17 10:24:29,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:24:29,278 INFO L130 BoogieDeclarations]: Found specification of procedure st_release_request [2022-10-17 10:24:29,278 INFO L138 BoogieDeclarations]: Found implementation of procedure st_release_request [2022-10-17 10:24:29,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 10:24:29,278 INFO L130 BoogieDeclarations]: Found specification of procedure remove_cdevs [2022-10-17 10:24:29,278 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_cdevs [2022-10-17 10:24:29,279 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-10-17 10:24:29,279 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-10-17 10:24:29,279 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-10-17 10:24:29,279 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-10-17 10:24:29,279 INFO L130 BoogieDeclarations]: Found specification of procedure get_location [2022-10-17 10:24:29,279 INFO L138 BoogieDeclarations]: Found implementation of procedure get_location [2022-10-17 10:24:29,279 INFO L130 BoogieDeclarations]: Found specification of procedure st_compression [2022-10-17 10:24:29,279 INFO L138 BoogieDeclarations]: Found implementation of procedure st_compression [2022-10-17 10:24:29,280 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_autopm_put_device [2022-10-17 10:24:29,280 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_autopm_put_device [2022-10-17 10:24:29,280 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2022-10-17 10:24:29,280 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2022-10-17 10:24:29,280 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-10-17 10:24:29,280 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-10-17 10:24:29,280 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-10-17 10:24:29,280 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-10-17 10:24:29,280 INFO L130 BoogieDeclarations]: Found specification of procedure check_tape [2022-10-17 10:24:29,281 INFO L138 BoogieDeclarations]: Found implementation of procedure check_tape [2022-10-17 10:24:29,281 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-10-17 10:24:29,281 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-10-17 10:24:29,281 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-10-17 10:24:29,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-10-17 10:24:29,281 INFO L130 BoogieDeclarations]: Found specification of procedure switch_partition [2022-10-17 10:24:29,281 INFO L138 BoogieDeclarations]: Found implementation of procedure switch_partition [2022-10-17 10:24:29,281 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_scsi_tape [2022-10-17 10:24:29,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_scsi_tape [2022-10-17 10:24:29,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-10-17 10:24:29,282 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-10-17 10:24:29,282 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-10-17 10:24:29,282 INFO L130 BoogieDeclarations]: Found specification of procedure setup_buffering [2022-10-17 10:24:29,282 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_buffering [2022-10-17 10:24:29,282 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-10-17 10:24:29,282 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-10-17 10:24:29,282 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_tape_put [2022-10-17 10:24:29,283 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_tape_put [2022-10-17 10:24:29,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-17 10:24:29,283 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_cmd_ioctl [2022-10-17 10:24:29,283 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_cmd_ioctl [2022-10-17 10:24:29,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:24:29,283 INFO L130 BoogieDeclarations]: Found specification of procedure create_one_cdev [2022-10-17 10:24:29,283 INFO L138 BoogieDeclarations]: Found implementation of procedure create_one_cdev [2022-10-17 10:24:29,283 INFO L130 BoogieDeclarations]: Found specification of procedure queue_dma_alignment [2022-10-17 10:24:29,283 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_dma_alignment [2022-10-17 10:24:29,284 INFO L130 BoogieDeclarations]: Found specification of procedure do_load_unload [2022-10-17 10:24:29,284 INFO L138 BoogieDeclarations]: Found implementation of procedure do_load_unload [2022-10-17 10:24:29,284 INFO L130 BoogieDeclarations]: Found specification of procedure st_flush_write_buffer [2022-10-17 10:24:29,284 INFO L138 BoogieDeclarations]: Found implementation of procedure st_flush_write_buffer [2022-10-17 10:24:29,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-10-17 10:24:29,284 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-10-17 10:24:29,284 INFO L130 BoogieDeclarations]: Found specification of procedure enlarge_buffer [2022-10-17 10:24:29,284 INFO L138 BoogieDeclarations]: Found implementation of procedure enlarge_buffer [2022-10-17 10:24:29,285 INFO L130 BoogieDeclarations]: Found specification of procedure cross_eof [2022-10-17 10:24:29,285 INFO L138 BoogieDeclarations]: Found implementation of procedure cross_eof [2022-10-17 10:24:29,285 INFO L130 BoogieDeclarations]: Found specification of procedure st_chk_result [2022-10-17 10:24:29,285 INFO L138 BoogieDeclarations]: Found implementation of procedure st_chk_result [2022-10-17 10:24:29,285 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2022-10-17 10:24:29,285 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2022-10-17 10:24:29,285 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-10-17 10:24:29,285 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-10-17 10:24:29,285 INFO L130 BoogieDeclarations]: Found specification of procedure write_behind_check [2022-10-17 10:24:29,286 INFO L138 BoogieDeclarations]: Found implementation of procedure write_behind_check [2022-10-17 10:24:29,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:24:29,286 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-10-17 10:24:29,286 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-10-17 10:24:29,286 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-10-17 10:24:29,286 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-10-17 10:24:29,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-10-17 10:24:29,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-10-17 10:24:29,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_st_ref_mutex [2022-10-17 10:24:29,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_st_ref_mutex [2022-10-17 10:24:29,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:24:29,342 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-10-17 10:24:29,343 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-10-17 10:24:29,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:24:29,343 INFO L130 BoogieDeclarations]: Found specification of procedure flush_buffer [2022-10-17 10:24:29,343 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_buffer [2022-10-17 10:24:29,343 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2022-10-17 10:24:29,343 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2022-10-17 10:24:29,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 10:24:29,344 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-10-17 10:24:29,344 INFO L130 BoogieDeclarations]: Found specification of procedure driver_create_file [2022-10-17 10:24:29,344 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_create_file [2022-10-17 10:24:29,344 INFO L130 BoogieDeclarations]: Found specification of procedure release_buffering [2022-10-17 10:24:29,344 INFO L138 BoogieDeclarations]: Found implementation of procedure release_buffering [2022-10-17 10:24:29,344 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2022-10-17 10:24:29,344 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2022-10-17 10:24:29,344 INFO L130 BoogieDeclarations]: Found specification of procedure normalize_buffer [2022-10-17 10:24:29,345 INFO L138 BoogieDeclarations]: Found implementation of procedure normalize_buffer [2022-10-17 10:24:29,345 INFO L130 BoogieDeclarations]: Found specification of procedure write_mode_page [2022-10-17 10:24:29,345 INFO L138 BoogieDeclarations]: Found implementation of procedure write_mode_page [2022-10-17 10:24:29,345 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-10-17 10:24:29,345 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-10-17 10:24:29,345 INFO L130 BoogieDeclarations]: Found specification of procedure rw_checks [2022-10-17 10:24:29,345 INFO L138 BoogieDeclarations]: Found implementation of procedure rw_checks [2022-10-17 10:24:29,346 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2022-10-17 10:24:29,346 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2022-10-17 10:24:29,346 INFO L130 BoogieDeclarations]: Found specification of procedure idr_remove [2022-10-17 10:24:29,346 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_remove [2022-10-17 10:24:29,346 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_lock_of_scsi_tape [2022-10-17 10:24:29,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_lock_of_scsi_tape [2022-10-17 10:24:29,346 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-10-17 10:24:29,346 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-10-17 10:24:29,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:24:29,347 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_autopm_get_device [2022-10-17 10:24:29,347 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_autopm_get_device [2022-10-17 10:24:29,347 INFO L130 BoogieDeclarations]: Found specification of procedure set_location [2022-10-17 10:24:29,347 INFO L138 BoogieDeclarations]: Found implementation of procedure set_location [2022-10-17 10:24:29,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:24:29,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:24:30,284 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:24:30,289 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:24:40,094 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:24:40,128 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:24:40,128 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:24:40,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:24:40 BoogieIcfgContainer [2022-10-17 10:24:40,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:24:40,137 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:24:40,137 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:24:40,141 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:24:40,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:24:24" (1/3) ... [2022-10-17 10:24:40,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b995d9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:24:40, skipping insertion in model container [2022-10-17 10:24:40,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:24:27" (2/3) ... [2022-10-17 10:24:40,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b995d9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:24:40, skipping insertion in model container [2022-10-17 10:24:40,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:24:40" (3/3) ... [2022-10-17 10:24:40,144 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i [2022-10-17 10:24:40,162 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:24:40,162 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:24:40,302 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:24:40,312 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;@21266bef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:24:40,312 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:24:40,325 INFO L276 IsEmpty]: Start isEmpty. Operand has 2182 states, 1757 states have (on average 1.5054069436539557) internal successors, (2645), 1779 states have internal predecessors, (2645), 345 states have call successors, (345), 78 states have call predecessors, (345), 78 states have return successors, (345), 345 states have call predecessors, (345), 345 states have call successors, (345) [2022-10-17 10:24:40,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-17 10:24:40,333 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:24:40,334 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:24:40,335 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:24:40,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:24:40,343 INFO L85 PathProgramCache]: Analyzing trace with hash 426041223, now seen corresponding path program 1 times [2022-10-17 10:24:40,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:24:40,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949351412] [2022-10-17 10:24:40,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:24:40,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:24:40,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:41,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:24:41,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:41,067 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 10:24:41,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:24:41,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949351412] [2022-10-17 10:24:41,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949351412] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:24:41,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:24:41,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:24:41,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532099113] [2022-10-17 10:24:41,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:24:41,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:24:41,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:24:41,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:24:41,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:24:41,111 INFO L87 Difference]: Start difference. First operand has 2182 states, 1757 states have (on average 1.5054069436539557) internal successors, (2645), 1779 states have internal predecessors, (2645), 345 states have call successors, (345), 78 states have call predecessors, (345), 78 states have return successors, (345), 345 states have call predecessors, (345), 345 states have call successors, (345) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:24:41,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:24:41,389 INFO L93 Difference]: Finished difference Result 4356 states and 6772 transitions. [2022-10-17 10:24:41,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:24:41,391 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-10-17 10:24:41,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:24:41,431 INFO L225 Difference]: With dead ends: 4356 [2022-10-17 10:24:41,432 INFO L226 Difference]: Without dead ends: 2176 [2022-10-17 10:24:41,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 10:24:41,458 INFO L413 NwaCegarLoop]: 3295 mSDtfsCounter, 3291 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3291 SdHoareTripleChecker+Valid, 3295 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 10:24:41,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3291 Valid, 3295 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:24:41,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2176 states. [2022-10-17 10:24:41,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2176 to 2176. [2022-10-17 10:24:41,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2176 states, 1753 states have (on average 1.488876212207644) internal successors, (2610), 1773 states have internal predecessors, (2610), 345 states have call successors, (345), 78 states have call predecessors, (345), 77 states have return successors, (337), 337 states have call predecessors, (337), 337 states have call successors, (337) [2022-10-17 10:24:41,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2176 states to 2176 states and 3292 transitions. [2022-10-17 10:24:41,684 INFO L78 Accepts]: Start accepts. Automaton has 2176 states and 3292 transitions. Word has length 18 [2022-10-17 10:24:41,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:24:41,685 INFO L495 AbstractCegarLoop]: Abstraction has 2176 states and 3292 transitions. [2022-10-17 10:24:41,686 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:24:41,686 INFO L276 IsEmpty]: Start isEmpty. Operand 2176 states and 3292 transitions. [2022-10-17 10:24:41,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-17 10:24:41,687 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:24:41,688 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:24:41,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:24:41,688 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:24:41,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:24:41,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1127105801, now seen corresponding path program 1 times [2022-10-17 10:24:41,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:24:41,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945907400] [2022-10-17 10:24:41,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:24:41,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:24:41,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:41,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:24:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:41,988 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 10:24:41,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:24:41,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945907400] [2022-10-17 10:24:41,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945907400] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:24:41,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:24:41,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:24:41,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003550790] [2022-10-17 10:24:41,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:24:41,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:24:41,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:24:41,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:24:41,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:24:41,993 INFO L87 Difference]: Start difference. First operand 2176 states and 3292 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:24:42,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:24:42,144 INFO L93 Difference]: Finished difference Result 4345 states and 6575 transitions. [2022-10-17 10:24:42,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:24:42,145 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-10-17 10:24:42,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:24:42,165 INFO L225 Difference]: With dead ends: 4345 [2022-10-17 10:24:42,166 INFO L226 Difference]: Without dead ends: 2176 [2022-10-17 10:24:42,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 10:24:42,283 INFO L413 NwaCegarLoop]: 3290 mSDtfsCounter, 3285 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3285 SdHoareTripleChecker+Valid, 3290 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 10:24:42,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3285 Valid, 3290 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:24:42,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2176 states. [2022-10-17 10:24:42,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2176 to 2176. [2022-10-17 10:24:42,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2176 states, 1753 states have (on average 1.4883057615516257) internal successors, (2609), 1773 states have internal predecessors, (2609), 345 states have call successors, (345), 78 states have call predecessors, (345), 77 states have return successors, (337), 337 states have call predecessors, (337), 337 states have call successors, (337) [2022-10-17 10:24:42,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2176 states to 2176 states and 3291 transitions. [2022-10-17 10:24:42,426 INFO L78 Accepts]: Start accepts. Automaton has 2176 states and 3291 transitions. Word has length 18 [2022-10-17 10:24:42,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:24:42,426 INFO L495 AbstractCegarLoop]: Abstraction has 2176 states and 3291 transitions. [2022-10-17 10:24:42,427 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:24:42,427 INFO L276 IsEmpty]: Start isEmpty. Operand 2176 states and 3291 transitions. [2022-10-17 10:24:42,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-17 10:24:42,428 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:24:42,428 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:24:42,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:24:42,428 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:24:42,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:24:42,429 INFO L85 PathProgramCache]: Analyzing trace with hash 734078791, now seen corresponding path program 1 times [2022-10-17 10:24:42,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:24:42,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112126657] [2022-10-17 10:24:42,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:24:42,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:24:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:42,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:24:42,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:42,700 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 10:24:42,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:24:42,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112126657] [2022-10-17 10:24:42,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112126657] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:24:42,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:24:42,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:24:42,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794226107] [2022-10-17 10:24:42,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:24:42,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:24:42,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:24:42,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:24:42,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:24:42,703 INFO L87 Difference]: Start difference. First operand 2176 states and 3291 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:24:42,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:24:42,869 INFO L93 Difference]: Finished difference Result 2178 states and 3292 transitions. [2022-10-17 10:24:42,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:24:42,870 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-10-17 10:24:42,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:24:42,889 INFO L225 Difference]: With dead ends: 2178 [2022-10-17 10:24:42,890 INFO L226 Difference]: Without dead ends: 2175 [2022-10-17 10:24:42,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 10:24:42,893 INFO L413 NwaCegarLoop]: 3288 mSDtfsCounter, 3276 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3276 SdHoareTripleChecker+Valid, 3288 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 10:24:42,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3276 Valid, 3288 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:24:42,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2175 states. [2022-10-17 10:24:42,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2175 to 2175. [2022-10-17 10:24:43,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2175 states, 1753 states have (on average 1.4877353108956075) internal successors, (2608), 1772 states have internal predecessors, (2608), 344 states have call successors, (344), 78 states have call predecessors, (344), 77 states have return successors, (337), 337 states have call predecessors, (337), 337 states have call successors, (337) [2022-10-17 10:24:43,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2175 states to 2175 states and 3289 transitions. [2022-10-17 10:24:43,036 INFO L78 Accepts]: Start accepts. Automaton has 2175 states and 3289 transitions. Word has length 18 [2022-10-17 10:24:43,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:24:43,037 INFO L495 AbstractCegarLoop]: Abstraction has 2175 states and 3289 transitions. [2022-10-17 10:24:43,038 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:24:43,038 INFO L276 IsEmpty]: Start isEmpty. Operand 2175 states and 3289 transitions. [2022-10-17 10:24:43,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-10-17 10:24:43,040 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:24:43,040 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 10:24:43,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:24:43,040 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:24:43,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:24:43,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1280897129, now seen corresponding path program 1 times [2022-10-17 10:24:43,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:24:43,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555724647] [2022-10-17 10:24:43,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:24:43,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:24:43,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:43,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:24:43,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:43,267 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 10:24:43,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:24:43,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555724647] [2022-10-17 10:24:43,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555724647] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:24:43,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:24:43,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:24:43,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043342905] [2022-10-17 10:24:43,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:24:43,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:24:43,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:24:43,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:24:43,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:24:43,271 INFO L87 Difference]: Start difference. First operand 2175 states and 3289 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:24:43,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:24:43,700 INFO L93 Difference]: Finished difference Result 6401 states and 9695 transitions. [2022-10-17 10:24:43,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:24:43,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-10-17 10:24:43,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:24:43,739 INFO L225 Difference]: With dead ends: 6401 [2022-10-17 10:24:43,740 INFO L226 Difference]: Without dead ends: 4267 [2022-10-17 10:24:43,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 10:24:43,762 INFO L413 NwaCegarLoop]: 5401 mSDtfsCounter, 3271 mSDsluCounter, 3166 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3271 SdHoareTripleChecker+Valid, 8567 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:24:43,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3271 Valid, 8567 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:24:43,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4267 states. [2022-10-17 10:24:43,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4267 to 4262. [2022-10-17 10:24:44,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4262 states, 3448 states have (on average 1.4895591647331787) internal successors, (5136), 3479 states have internal predecessors, (5136), 662 states have call successors, (662), 153 states have call predecessors, (662), 151 states have return successors, (657), 651 states have call predecessors, (657), 651 states have call successors, (657) [2022-10-17 10:24:44,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4262 states to 4262 states and 6455 transitions. [2022-10-17 10:24:44,040 INFO L78 Accepts]: Start accepts. Automaton has 4262 states and 6455 transitions. Word has length 19 [2022-10-17 10:24:44,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:24:44,041 INFO L495 AbstractCegarLoop]: Abstraction has 4262 states and 6455 transitions. [2022-10-17 10:24:44,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:24:44,041 INFO L276 IsEmpty]: Start isEmpty. Operand 4262 states and 6455 transitions. [2022-10-17 10:24:44,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-10-17 10:24:44,045 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:24:44,045 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 10:24:44,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:24:44,051 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:24:44,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:24:44,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1052401290, now seen corresponding path program 1 times [2022-10-17 10:24:44,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:24:44,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015189352] [2022-10-17 10:24:44,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:24:44,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:24:44,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:44,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:24:44,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:44,254 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 10:24:44,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:24:44,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015189352] [2022-10-17 10:24:44,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015189352] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:24:44,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:24:44,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:24:44,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211130961] [2022-10-17 10:24:44,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:24:44,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:24:44,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:24:44,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:24:44,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:24:44,257 INFO L87 Difference]: Start difference. First operand 4262 states and 6455 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:24:44,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:24:44,503 INFO L93 Difference]: Finished difference Result 4264 states and 6456 transitions. [2022-10-17 10:24:44,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:24:44,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-10-17 10:24:44,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:24:44,545 INFO L225 Difference]: With dead ends: 4264 [2022-10-17 10:24:44,545 INFO L226 Difference]: Without dead ends: 4261 [2022-10-17 10:24:44,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 10:24:44,549 INFO L413 NwaCegarLoop]: 3286 mSDtfsCounter, 3272 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3272 SdHoareTripleChecker+Valid, 3286 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 10:24:44,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3272 Valid, 3286 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:24:44,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4261 states. [2022-10-17 10:24:44,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4261 to 4261. [2022-10-17 10:24:44,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4261 states, 3448 states have (on average 1.4892691415313226) internal successors, (5135), 3478 states have internal predecessors, (5135), 661 states have call successors, (661), 153 states have call predecessors, (661), 151 states have return successors, (657), 651 states have call predecessors, (657), 651 states have call successors, (657) [2022-10-17 10:24:44,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4261 states to 4261 states and 6453 transitions. [2022-10-17 10:24:44,910 INFO L78 Accepts]: Start accepts. Automaton has 4261 states and 6453 transitions. Word has length 20 [2022-10-17 10:24:44,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:24:44,910 INFO L495 AbstractCegarLoop]: Abstraction has 4261 states and 6453 transitions. [2022-10-17 10:24:44,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:24:44,911 INFO L276 IsEmpty]: Start isEmpty. Operand 4261 states and 6453 transitions. [2022-10-17 10:24:44,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-10-17 10:24:44,916 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:24:44,916 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 10:24:44,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:24:44,917 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:24:44,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:24:44,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1735997556, now seen corresponding path program 1 times [2022-10-17 10:24:44,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:24:44,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835998047] [2022-10-17 10:24:44,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:24:44,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:24:44,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:45,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:24:45,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:45,113 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 10:24:45,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:24:45,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835998047] [2022-10-17 10:24:45,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835998047] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:24:45,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:24:45,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:24:45,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134170893] [2022-10-17 10:24:45,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:24:45,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:24:45,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:24:45,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:24:45,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:24:45,116 INFO L87 Difference]: Start difference. First operand 4261 states and 6453 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:24:45,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:24:45,451 INFO L93 Difference]: Finished difference Result 4333 states and 6511 transitions. [2022-10-17 10:24:45,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:24:45,452 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-10-17 10:24:45,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:24:45,492 INFO L225 Difference]: With dead ends: 4333 [2022-10-17 10:24:45,492 INFO L226 Difference]: Without dead ends: 4312 [2022-10-17 10:24:45,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 10:24:45,500 INFO L413 NwaCegarLoop]: 3288 mSDtfsCounter, 3107 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3107 SdHoareTripleChecker+Valid, 3473 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:24:45,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3107 Valid, 3473 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:24:45,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4312 states. [2022-10-17 10:24:45,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4312 to 4310. [2022-10-17 10:24:45,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4310 states, 3491 states have (on average 1.4818103695216271) internal successors, (5173), 3519 states have internal predecessors, (5173), 651 states have call successors, (651), 169 states have call predecessors, (651), 167 states have return successors, (649), 643 states have call predecessors, (649), 643 states have call successors, (649) [2022-10-17 10:24:45,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4310 states to 4310 states and 6473 transitions. [2022-10-17 10:24:45,839 INFO L78 Accepts]: Start accepts. Automaton has 4310 states and 6473 transitions. Word has length 21 [2022-10-17 10:24:45,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:24:45,839 INFO L495 AbstractCegarLoop]: Abstraction has 4310 states and 6473 transitions. [2022-10-17 10:24:45,840 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:24:45,840 INFO L276 IsEmpty]: Start isEmpty. Operand 4310 states and 6473 transitions. [2022-10-17 10:24:45,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-10-17 10:24:45,845 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:24:45,846 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:24:45,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:24:45,846 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:24:45,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:24:45,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1313551294, now seen corresponding path program 1 times [2022-10-17 10:24:45,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:24:45,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766434746] [2022-10-17 10:24:45,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:24:45,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:24:45,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:46,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:24:46,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:46,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-17 10:24:46,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:46,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-10-17 10:24:46,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:46,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-17 10:24:46,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:46,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-10-17 10:24:46,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:46,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-10-17 10:24:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:24:46,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 10:24:46,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:24:46,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766434746] [2022-10-17 10:24:46,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766434746] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:24:46,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:24:46,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:24:46,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184050734] [2022-10-17 10:24:46,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:24:46,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:24:46,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:24:46,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:24:46,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:24:46,283 INFO L87 Difference]: Start difference. First operand 4310 states and 6473 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-10-17 10:24:52,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:24:52,093 INFO L93 Difference]: Finished difference Result 8570 states and 12881 transitions. [2022-10-17 10:24:52,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:24:52,094 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 61 [2022-10-17 10:24:52,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:24:52,133 INFO L225 Difference]: With dead ends: 8570 [2022-10-17 10:24:52,134 INFO L226 Difference]: Without dead ends: 4313 [2022-10-17 10:24:52,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 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 10:24:52,160 INFO L413 NwaCegarLoop]: 4180 mSDtfsCounter, 4705 mSDsluCounter, 3269 mSDsCounter, 0 mSdLazyCounter, 2541 mSolverCounterSat, 913 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5015 SdHoareTripleChecker+Valid, 7449 SdHoareTripleChecker+Invalid, 3454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 913 IncrementalHoareTripleChecker+Valid, 2541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:24:52,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5015 Valid, 7449 Invalid, 3454 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [913 Valid, 2541 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-10-17 10:24:52,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4313 states. [2022-10-17 10:24:52,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4313 to 4310. [2022-10-17 10:24:52,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4310 states, 3491 states have (on average 1.4812374677742768) internal successors, (5171), 3519 states have internal predecessors, (5171), 651 states have call successors, (651), 169 states have call predecessors, (651), 167 states have return successors, (643), 643 states have call predecessors, (643), 640 states have call successors, (643) [2022-10-17 10:24:52,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4310 states to 4310 states and 6465 transitions. [2022-10-17 10:24:52,448 INFO L78 Accepts]: Start accepts. Automaton has 4310 states and 6465 transitions. Word has length 61 [2022-10-17 10:24:52,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:24:52,449 INFO L495 AbstractCegarLoop]: Abstraction has 4310 states and 6465 transitions. [2022-10-17 10:24:52,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-10-17 10:24:52,450 INFO L276 IsEmpty]: Start isEmpty. Operand 4310 states and 6465 transitions. [2022-10-17 10:24:52,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-10-17 10:24:52,455 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:24:52,455 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:24:52,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:24:52,455 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:24:52,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:24:52,456 INFO L85 PathProgramCache]: Analyzing trace with hash 2136944131, now seen corresponding path program 1 times [2022-10-17 10:24:52,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:24:52,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782242313] [2022-10-17 10:24:52,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:24:52,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:24:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat