./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--input--misc--uinput.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_f65afba5-5dea-4671-b7a8-482f19061c9a/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f65afba5-5dea-4671-b7a8-482f19061c9a/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_f65afba5-5dea-4671-b7a8-482f19061c9a/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f65afba5-5dea-4671-b7a8-482f19061c9a/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--input--misc--uinput.ko-ldv_main0.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f65afba5-5dea-4671-b7a8-482f19061c9a/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_f65afba5-5dea-4671-b7a8-482f19061c9a/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 1ef83f89a2480bb974b27f067785c3859d21a1e764735321272ad8be1e6dccbd --- 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 11:00:09,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 11:00:09,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 11:00:09,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 11:00:09,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 11:00:09,714 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 11:00:09,716 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 11:00:09,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 11:00:09,721 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 11:00:09,722 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 11:00:09,723 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 11:00:09,725 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 11:00:09,726 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 11:00:09,727 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 11:00:09,729 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 11:00:09,731 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 11:00:09,732 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 11:00:09,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 11:00:09,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 11:00:09,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 11:00:09,750 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 11:00:09,753 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 11:00:09,762 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 11:00:09,763 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 11:00:09,768 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 11:00:09,771 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 11:00:09,772 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 11:00:09,773 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 11:00:09,775 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 11:00:09,776 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 11:00:09,777 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 11:00:09,778 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 11:00:09,779 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 11:00:09,781 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 11:00:09,784 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 11:00:09,784 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 11:00:09,785 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 11:00:09,785 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 11:00:09,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 11:00:09,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 11:00:09,788 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 11:00:09,789 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f65afba5-5dea-4671-b7a8-482f19061c9a/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-10-17 11:00:09,845 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 11:00:09,847 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 11:00:09,848 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 11:00:09,848 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 11:00:09,849 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 11:00:09,849 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 11:00:09,850 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 11:00:09,850 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 11:00:09,851 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 11:00:09,851 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 11:00:09,852 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 11:00:09,852 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 11:00:09,853 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 11:00:09,853 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 11:00:09,853 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 11:00:09,853 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 11:00:09,854 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 11:00:09,854 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 11:00:09,854 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 11:00:09,854 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 11:00:09,855 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 11:00:09,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:00:09,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 11:00:09,855 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 11:00:09,856 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 11:00:09,856 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 11:00:09,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 11:00:09,858 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 11:00:09,859 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 11:00:09,859 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 11:00:09,859 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_f65afba5-5dea-4671-b7a8-482f19061c9a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f65afba5-5dea-4671-b7a8-482f19061c9a/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ef83f89a2480bb974b27f067785c3859d21a1e764735321272ad8be1e6dccbd [2022-10-17 11:00:10,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 11:00:10,170 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 11:00:10,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 11:00:10,176 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 11:00:10,177 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 11:00:10,178 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f65afba5-5dea-4671-b7a8-482f19061c9a/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--input--misc--uinput.ko-ldv_main0.cil.out.i [2022-10-17 11:00:10,262 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f65afba5-5dea-4671-b7a8-482f19061c9a/bin/uautomizer-J5u9QxTXDZ/data/944a67e86/3619362be9274ee7aa6d4e7a7c37fc5f/FLAGbe46f5518 [2022-10-17 11:00:11,033 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 11:00:11,037 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f65afba5-5dea-4671-b7a8-482f19061c9a/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--input--misc--uinput.ko-ldv_main0.cil.out.i [2022-10-17 11:00:11,080 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f65afba5-5dea-4671-b7a8-482f19061c9a/bin/uautomizer-J5u9QxTXDZ/data/944a67e86/3619362be9274ee7aa6d4e7a7c37fc5f/FLAGbe46f5518 [2022-10-17 11:00:11,131 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f65afba5-5dea-4671-b7a8-482f19061c9a/bin/uautomizer-J5u9QxTXDZ/data/944a67e86/3619362be9274ee7aa6d4e7a7c37fc5f [2022-10-17 11:00:11,135 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 11:00:11,138 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 11:00:11,139 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 11:00:11,139 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 11:00:11,143 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 11:00:11,143 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:00:11" (1/1) ... [2022-10-17 11:00:11,146 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@533cdd9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:11, skipping insertion in model container [2022-10-17 11:00:11,146 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:00:11" (1/1) ... [2022-10-17 11:00:11,153 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 11:00:11,267 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 11:00:12,537 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_f65afba5-5dea-4671-b7a8-482f19061c9a/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--input--misc--uinput.ko-ldv_main0.cil.out.i[133672,133685] [2022-10-17 11:00:12,602 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:00:12,615 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 11:00:12,915 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_f65afba5-5dea-4671-b7a8-482f19061c9a/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--input--misc--uinput.ko-ldv_main0.cil.out.i[133672,133685] [2022-10-17 11:00:12,942 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:00:13,018 INFO L208 MainTranslator]: Completed translation [2022-10-17 11:00:13,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:13 WrapperNode [2022-10-17 11:00:13,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 11:00:13,020 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 11:00:13,020 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 11:00:13,020 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 11:00:13,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:13" (1/1) ... [2022-10-17 11:00:13,083 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:13" (1/1) ... [2022-10-17 11:00:13,220 INFO L138 Inliner]: procedures = 191, calls = 829, calls flagged for inlining = 88, calls inlined = 74, statements flattened = 2144 [2022-10-17 11:00:13,221 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 11:00:13,221 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 11:00:13,221 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 11:00:13,222 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 11:00:13,231 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:13" (1/1) ... [2022-10-17 11:00:13,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:13" (1/1) ... [2022-10-17 11:00:13,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:13" (1/1) ... [2022-10-17 11:00:13,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:13" (1/1) ... [2022-10-17 11:00:13,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:13" (1/1) ... [2022-10-17 11:00:13,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:13" (1/1) ... [2022-10-17 11:00:13,382 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:13" (1/1) ... [2022-10-17 11:00:13,394 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:13" (1/1) ... [2022-10-17 11:00:13,452 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 11:00:13,461 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 11:00:13,461 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 11:00:13,461 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 11:00:13,462 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:13" (1/1) ... [2022-10-17 11:00:13,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:00:13,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f65afba5-5dea-4671-b7a8-482f19061c9a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:00:13,511 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f65afba5-5dea-4671-b7a8-482f19061c9a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 11:00:13,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f65afba5-5dea-4671-b7a8-482f19061c9a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 11:00:13,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-17 11:00:13,563 INFO L130 BoogieDeclarations]: Found specification of procedure input_event_size [2022-10-17 11:00:13,563 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event_size [2022-10-17 11:00:13,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-17 11:00:13,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-17 11:00:13,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 11:00:13,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_mutex_of_uinput_device [2022-10-17 11:00:13,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_mutex_of_uinput_device [2022-10-17 11:00:13,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-10-17 11:00:13,564 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-10-17 11:00:13,564 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2022-10-17 11:00:13,564 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2022-10-17 11:00:13,565 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-10-17 11:00:13,565 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-10-17 11:00:13,565 INFO L130 BoogieDeclarations]: Found specification of procedure uinput_request_done [2022-10-17 11:00:13,565 INFO L138 BoogieDeclarations]: Found implementation of procedure uinput_request_done [2022-10-17 11:00:13,566 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-17 11:00:13,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-17 11:00:13,566 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-10-17 11:00:13,567 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-10-17 11:00:13,567 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-10-17 11:00:13,567 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-10-17 11:00:13,567 INFO L130 BoogieDeclarations]: Found specification of procedure input_abs_get_flat [2022-10-17 11:00:13,567 INFO L138 BoogieDeclarations]: Found implementation of procedure input_abs_get_flat [2022-10-17 11:00:13,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 11:00:13,568 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-10-17 11:00:13,568 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-10-17 11:00:13,568 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-10-17 11:00:13,568 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-10-17 11:00:13,568 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-17 11:00:13,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-17 11:00:13,569 INFO L130 BoogieDeclarations]: Found specification of procedure input_alloc_absinfo [2022-10-17 11:00:13,569 INFO L138 BoogieDeclarations]: Found implementation of procedure input_alloc_absinfo [2022-10-17 11:00:13,569 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-10-17 11:00:13,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-10-17 11:00:13,569 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-10-17 11:00:13,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-10-17 11:00:13,570 INFO L130 BoogieDeclarations]: Found specification of procedure uinput_request_find [2022-10-17 11:00:13,570 INFO L138 BoogieDeclarations]: Found implementation of procedure uinput_request_find [2022-10-17 11:00:13,570 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_uinput_device [2022-10-17 11:00:13,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_uinput_device [2022-10-17 11:00:13,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 11:00:13,571 INFO L130 BoogieDeclarations]: Found specification of procedure uinput_allocate_device [2022-10-17 11:00:13,571 INFO L138 BoogieDeclarations]: Found implementation of procedure uinput_allocate_device [2022-10-17 11:00:13,571 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-10-17 11:00:13,572 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-10-17 11:00:13,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 11:00:13,572 INFO L130 BoogieDeclarations]: Found specification of procedure uinput_ioctl_handler [2022-10-17 11:00:13,572 INFO L138 BoogieDeclarations]: Found implementation of procedure uinput_ioctl_handler [2022-10-17 11:00:13,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 11:00:13,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 11:00:13,573 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-10-17 11:00:13,573 INFO L130 BoogieDeclarations]: Found specification of procedure uinput_ff_upload_from_user [2022-10-17 11:00:13,573 INFO L138 BoogieDeclarations]: Found implementation of procedure uinput_ff_upload_from_user [2022-10-17 11:00:13,574 INFO L130 BoogieDeclarations]: Found specification of procedure uinput_destroy_device [2022-10-17 11:00:13,574 INFO L138 BoogieDeclarations]: Found implementation of procedure uinput_destroy_device [2022-10-17 11:00:13,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 11:00:13,575 INFO L130 BoogieDeclarations]: Found specification of procedure input_abs_get_max [2022-10-17 11:00:13,576 INFO L138 BoogieDeclarations]: Found implementation of procedure input_abs_get_max [2022-10-17 11:00:13,576 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-10-17 11:00:13,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-10-17 11:00:13,577 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-10-17 11:00:13,577 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-10-17 11:00:13,577 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2022-10-17 11:00:13,577 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2022-10-17 11:00:13,578 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2022-10-17 11:00:13,578 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2022-10-17 11:00:13,578 INFO L130 BoogieDeclarations]: Found specification of procedure input_abs_get_min [2022-10-17 11:00:13,578 INFO L138 BoogieDeclarations]: Found implementation of procedure input_abs_get_min [2022-10-17 11:00:13,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 11:00:13,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 11:00:13,579 INFO L130 BoogieDeclarations]: Found specification of procedure is_compat_task [2022-10-17 11:00:13,579 INFO L138 BoogieDeclarations]: Found implementation of procedure is_compat_task [2022-10-17 11:00:13,580 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-10-17 11:00:13,580 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-10-17 11:00:13,580 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2022-10-17 11:00:13,580 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2022-10-17 11:00:13,580 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-10-17 11:00:13,580 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-10-17 11:00:13,581 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-10-17 11:00:13,581 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-10-17 11:00:13,581 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-10-17 11:00:13,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-10-17 11:00:13,581 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-10-17 11:00:13,581 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-10-17 11:00:13,582 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-10-17 11:00:13,582 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-10-17 11:00:13,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 11:00:13,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-10-17 11:00:13,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-10-17 11:00:13,583 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-10-17 11:00:13,583 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-10-17 11:00:13,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-10-17 11:00:13,583 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-10-17 11:00:13,584 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-10-17 11:00:13,584 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-10-17 11:00:13,585 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-10-17 11:00:13,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 11:00:13,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 11:00:13,585 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-10-17 11:00:13,585 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-10-17 11:00:14,192 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 11:00:14,194 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 11:00:23,629 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 11:00:23,659 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 11:00:23,659 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 11:00:23,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:00:23 BoogieIcfgContainer [2022-10-17 11:00:23,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 11:00:23,668 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 11:00:23,668 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 11:00:23,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 11:00:23,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 11:00:11" (1/3) ... [2022-10-17 11:00:23,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e358960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:00:23, skipping insertion in model container [2022-10-17 11:00:23,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:13" (2/3) ... [2022-10-17 11:00:23,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e358960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:00:23, skipping insertion in model container [2022-10-17 11:00:23,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:00:23" (3/3) ... [2022-10-17 11:00:23,677 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--input--misc--uinput.ko-ldv_main0.cil.out.i [2022-10-17 11:00:23,701 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 11:00:23,702 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 11:00:23,821 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 11:00:23,834 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;@501ea0f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 11:00:23,834 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 11:00:23,845 INFO L276 IsEmpty]: Start isEmpty. Operand has 678 states, 497 states have (on average 1.3541247484909458) internal successors, (673), 509 states have internal predecessors, (673), 137 states have call successors, (137), 42 states have call predecessors, (137), 42 states have return successors, (137), 135 states have call predecessors, (137), 137 states have call successors, (137) [2022-10-17 11:00:23,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-17 11:00:23,856 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:00:23,857 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:00:23,858 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:00:23,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:00:23,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1437807102, now seen corresponding path program 1 times [2022-10-17 11:00:23,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:00:23,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140051457] [2022-10-17 11:00:23,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:00:23,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:00:24,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:24,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 11:00:24,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:24,399 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 11:00:24,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:00:24,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140051457] [2022-10-17 11:00:24,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140051457] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:00:24,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:00:24,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:00:24,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881952635] [2022-10-17 11:00:24,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:00:24,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:00:24,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:00:24,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:00:24,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:00:24,467 INFO L87 Difference]: Start difference. First operand has 678 states, 497 states have (on average 1.3541247484909458) internal successors, (673), 509 states have internal predecessors, (673), 137 states have call successors, (137), 42 states have call predecessors, (137), 42 states have return successors, (137), 135 states have call predecessors, (137), 137 states have call successors, (137) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11:00:24,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:00:24,721 INFO L93 Difference]: Finished difference Result 1345 states and 1897 transitions. [2022-10-17 11:00:24,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:00:24,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 14 [2022-10-17 11:00:24,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:00:24,759 INFO L225 Difference]: With dead ends: 1345 [2022-10-17 11:00:24,759 INFO L226 Difference]: Without dead ends: 671 [2022-10-17 11:00:24,772 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 11:00:24,777 INFO L413 NwaCegarLoop]: 936 mSDtfsCounter, 928 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 936 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 11:00:24,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [928 Valid, 936 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:00:24,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2022-10-17 11:00:24,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 671. [2022-10-17 11:00:24,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 493 states have (on average 1.3488843813387423) internal successors, (665), 502 states have internal predecessors, (665), 136 states have call successors, (136), 42 states have call predecessors, (136), 41 states have return successors, (132), 130 states have call predecessors, (132), 132 states have call successors, (132) [2022-10-17 11:00:24,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 933 transitions. [2022-10-17 11:00:24,954 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 933 transitions. Word has length 14 [2022-10-17 11:00:24,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:00:24,956 INFO L495 AbstractCegarLoop]: Abstraction has 671 states and 933 transitions. [2022-10-17 11:00:24,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11:00:24,957 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 933 transitions. [2022-10-17 11:00:24,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-17 11:00:24,959 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:00:24,959 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:00:24,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 11:00:24,960 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:00:24,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:00:24,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1622032166, now seen corresponding path program 1 times [2022-10-17 11:00:24,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:00:24,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964182225] [2022-10-17 11:00:24,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:00:24,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:00:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:25,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 11:00:25,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:25,132 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 11:00:25,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:00:25,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964182225] [2022-10-17 11:00:25,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964182225] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:00:25,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:00:25,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:00:25,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800202663] [2022-10-17 11:00:25,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:00:25,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:00:25,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:00:25,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:00:25,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:00:25,140 INFO L87 Difference]: Start difference. First operand 671 states and 933 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 11:00:25,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:00:25,223 INFO L93 Difference]: Finished difference Result 673 states and 934 transitions. [2022-10-17 11:00:25,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:00:25,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 15 [2022-10-17 11:00:25,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:00:25,232 INFO L225 Difference]: With dead ends: 673 [2022-10-17 11:00:25,232 INFO L226 Difference]: Without dead ends: 670 [2022-10-17 11:00:25,238 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 11:00:25,240 INFO L413 NwaCegarLoop]: 930 mSDtfsCounter, 921 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 930 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 11:00:25,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [921 Valid, 930 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:00:25,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2022-10-17 11:00:25,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 670. [2022-10-17 11:00:25,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 493 states have (on average 1.3468559837728196) internal successors, (664), 501 states have internal predecessors, (664), 135 states have call successors, (135), 42 states have call predecessors, (135), 41 states have return successors, (132), 130 states have call predecessors, (132), 132 states have call successors, (132) [2022-10-17 11:00:25,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 931 transitions. [2022-10-17 11:00:25,311 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 931 transitions. Word has length 15 [2022-10-17 11:00:25,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:00:25,311 INFO L495 AbstractCegarLoop]: Abstraction has 670 states and 931 transitions. [2022-10-17 11:00:25,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 11:00:25,312 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 931 transitions. [2022-10-17 11:00:25,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-17 11:00:25,313 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:00:25,313 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:00:25,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 11:00:25,313 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:00:25,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:00:25,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1256920575, now seen corresponding path program 1 times [2022-10-17 11:00:25,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:00:25,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468488514] [2022-10-17 11:00:25,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:00:25,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:00:25,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:25,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 11:00:25,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:25,389 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 11:00:25,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:00:25,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468488514] [2022-10-17 11:00:25,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468488514] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:00:25,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:00:25,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:00:25,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685883956] [2022-10-17 11:00:25,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:00:25,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:00:25,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:00:25,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:00:25,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:00:25,393 INFO L87 Difference]: Start difference. First operand 670 states and 931 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 11:00:25,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:00:25,582 INFO L93 Difference]: Finished difference Result 1941 states and 2720 transitions. [2022-10-17 11:00:25,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:00:25,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 16 [2022-10-17 11:00:25,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:00:25,594 INFO L225 Difference]: With dead ends: 1941 [2022-10-17 11:00:25,594 INFO L226 Difference]: Without dead ends: 1271 [2022-10-17 11:00:25,597 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 11:00:25,599 INFO L413 NwaCegarLoop]: 1567 mSDtfsCounter, 918 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 2420 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:00:25,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 2420 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:00:25,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2022-10-17 11:00:25,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1268. [2022-10-17 11:00:25,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1268 states, 937 states have (on average 1.3468516542155817) internal successors, (1262), 951 states have internal predecessors, (1262), 254 states have call successors, (254), 78 states have call predecessors, (254), 76 states have return successors, (258), 244 states have call predecessors, (258), 248 states have call successors, (258) [2022-10-17 11:00:25,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 1774 transitions. [2022-10-17 11:00:25,719 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 1774 transitions. Word has length 16 [2022-10-17 11:00:25,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:00:25,719 INFO L495 AbstractCegarLoop]: Abstraction has 1268 states and 1774 transitions. [2022-10-17 11:00:25,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 11:00:25,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 1774 transitions. [2022-10-17 11:00:25,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-10-17 11:00:25,725 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:00:25,725 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] [2022-10-17 11:00:25,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 11:00:25,726 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:00:25,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:00:25,726 INFO L85 PathProgramCache]: Analyzing trace with hash 769296900, now seen corresponding path program 1 times [2022-10-17 11:00:25,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:00:25,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892906578] [2022-10-17 11:00:25,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:00:25,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:00:25,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:25,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 11:00:25,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:25,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-17 11:00:25,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:25,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-17 11:00:25,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:25,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-17 11:00:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:25,877 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 11:00:25,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:00:25,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892906578] [2022-10-17 11:00:25,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892906578] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:00:25,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:00:25,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 11:00:25,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435284162] [2022-10-17 11:00:25,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:00:25,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 11:00:25,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:00:25,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 11:00:25,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 11:00:25,881 INFO L87 Difference]: Start difference. First operand 1268 states and 1774 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-17 11:00:27,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:00:27,668 INFO L93 Difference]: Finished difference Result 2609 states and 3673 transitions. [2022-10-17 11:00:27,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 11:00:27,668 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 44 [2022-10-17 11:00:27,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:00:27,681 INFO L225 Difference]: With dead ends: 2609 [2022-10-17 11:00:27,681 INFO L226 Difference]: Without dead ends: 1349 [2022-10-17 11:00:27,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 11:00:27,701 INFO L413 NwaCegarLoop]: 1137 mSDtfsCounter, 471 mSDsluCounter, 1222 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 2359 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-10-17 11:00:27,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 2359 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-10-17 11:00:27,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2022-10-17 11:00:27,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 1338. [2022-10-17 11:00:27,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1338 states, 997 states have (on average 1.3490471414242728) internal successors, (1345), 1011 states have internal predecessors, (1345), 264 states have call successors, (264), 78 states have call predecessors, (264), 76 states have return successors, (272), 254 states have call predecessors, (272), 258 states have call successors, (272) [2022-10-17 11:00:27,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 1881 transitions. [2022-10-17 11:00:27,833 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 1881 transitions. Word has length 44 [2022-10-17 11:00:27,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:00:27,833 INFO L495 AbstractCegarLoop]: Abstraction has 1338 states and 1881 transitions. [2022-10-17 11:00:27,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-17 11:00:27,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 1881 transitions. [2022-10-17 11:00:27,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-10-17 11:00:27,842 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:00:27,842 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] [2022-10-17 11:00:27,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 11:00:27,842 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:00:27,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:00:27,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1880377210, now seen corresponding path program 1 times [2022-10-17 11:00:27,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:00:27,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907418010] [2022-10-17 11:00:27,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:00:27,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:00:27,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:28,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 11:00:28,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:28,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-17 11:00:28,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:28,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-17 11:00:28,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:28,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 11:00:28,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:28,068 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 11:00:28,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:00:28,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907418010] [2022-10-17 11:00:28,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907418010] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:00:28,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:00:28,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 11:00:28,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976273371] [2022-10-17 11:00:28,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:00:28,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 11:00:28,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:00:28,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 11:00:28,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 11:00:28,072 INFO L87 Difference]: Start difference. First operand 1338 states and 1881 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-17 11:00:30,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:00:30,246 INFO L93 Difference]: Finished difference Result 2672 states and 3759 transitions. [2022-10-17 11:00:30,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 11:00:30,247 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 53 [2022-10-17 11:00:30,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:00:30,264 INFO L225 Difference]: With dead ends: 2672 [2022-10-17 11:00:30,264 INFO L226 Difference]: Without dead ends: 1342 [2022-10-17 11:00:30,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 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 11:00:30,278 INFO L413 NwaCegarLoop]: 1258 mSDtfsCounter, 1275 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1424 SdHoareTripleChecker+Valid, 2308 SdHoareTripleChecker+Invalid, 1058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-10-17 11:00:30,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1424 Valid, 2308 Invalid, 1058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-10-17 11:00:30,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2022-10-17 11:00:30,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 1331. [2022-10-17 11:00:30,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1331 states, 994 states have (on average 1.3480885311871227) internal successors, (1340), 1006 states have internal predecessors, (1340), 260 states have call successors, (260), 78 states have call predecessors, (260), 76 states have return successors, (256), 252 states have call predecessors, (256), 249 states have call successors, (256) [2022-10-17 11:00:30,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 1856 transitions. [2022-10-17 11:00:30,400 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 1856 transitions. Word has length 53 [2022-10-17 11:00:30,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:00:30,401 INFO L495 AbstractCegarLoop]: Abstraction has 1331 states and 1856 transitions. [2022-10-17 11:00:30,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-17 11:00:30,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 1856 transitions. [2022-10-17 11:00:30,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-10-17 11:00:30,404 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:00:30,404 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] [2022-10-17 11:00:30,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 11:00:30,404 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:00:30,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:00:30,405 INFO L85 PathProgramCache]: Analyzing trace with hash -527067513, now seen corresponding path program 1 times [2022-10-17 11:00:30,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:00:30,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474195884] [2022-10-17 11:00:30,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:00:30,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:00:30,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:30,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 11:00:30,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:30,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-17 11:00:30,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:30,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-17 11:00:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:30,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 11:00:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:30,674 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 11:00:30,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:00:30,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474195884] [2022-10-17 11:00:30,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474195884] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:00:30,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:00:30,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 11:00:30,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207201120] [2022-10-17 11:00:30,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:00:30,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 11:00:30,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:00:30,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 11:00:30,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 11:00:30,678 INFO L87 Difference]: Start difference. First operand 1331 states and 1856 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-17 11:00:33,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:00:33,446 INFO L93 Difference]: Finished difference Result 1448 states and 1996 transitions. [2022-10-17 11:00:33,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 11:00:33,447 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 53 [2022-10-17 11:00:33,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:00:33,459 INFO L225 Difference]: With dead ends: 1448 [2022-10-17 11:00:33,459 INFO L226 Difference]: Without dead ends: 1110 [2022-10-17 11:00:33,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-10-17 11:00:33,464 INFO L413 NwaCegarLoop]: 907 mSDtfsCounter, 228 mSDsluCounter, 2716 mSDsCounter, 0 mSdLazyCounter, 1644 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 3623 SdHoareTripleChecker+Invalid, 1789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-10-17 11:00:33,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 3623 Invalid, 1789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1644 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-10-17 11:00:33,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2022-10-17 11:00:33,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 1101. [2022-10-17 11:00:33,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1101 states, 823 states have (on average 1.3232077764277035) internal successors, (1089), 831 states have internal predecessors, (1089), 209 states have call successors, (209), 70 states have call predecessors, (209), 68 states have return successors, (206), 204 states have call predecessors, (206), 199 states have call successors, (206) [2022-10-17 11:00:33,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 1504 transitions. [2022-10-17 11:00:33,554 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 1504 transitions. Word has length 53 [2022-10-17 11:00:33,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:00:33,556 INFO L495 AbstractCegarLoop]: Abstraction has 1101 states and 1504 transitions. [2022-10-17 11:00:33,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-17 11:00:33,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 1504 transitions. [2022-10-17 11:00:33,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-10-17 11:00:33,561 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:00:33,561 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-10-17 11:00:33,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 11:00:33,562 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:00:33,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:00:33,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1582689980, now seen corresponding path program 1 times [2022-10-17 11:00:33,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:00:33,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868309828] [2022-10-17 11:00:33,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:00:33,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:00:33,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:33,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 11:00:33,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:33,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-17 11:00:33,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:33,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-17 11:00:33,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:33,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 11:00:33,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:33,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 11:00:33,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:34,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-10-17 11:00:34,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:34,053 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-17 11:00:34,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:00:34,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868309828] [2022-10-17 11:00:34,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868309828] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:00:34,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:00:34,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 11:00:34,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31192220] [2022-10-17 11:00:34,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:00:34,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 11:00:34,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:00:34,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 11:00:34,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-10-17 11:00:34,056 INFO L87 Difference]: Start difference. First operand 1101 states and 1504 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-10-17 11:00:38,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 11:00:40,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []