./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--gpu--drm--ast--ast.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9623703a-14ca-4edf-b006-4e36e8ff5fb7/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9623703a-14ca-4edf-b006-4e36e8ff5fb7/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9623703a-14ca-4edf-b006-4e36e8ff5fb7/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9623703a-14ca-4edf-b006-4e36e8ff5fb7/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--gpu--drm--ast--ast.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9623703a-14ca-4edf-b006-4e36e8ff5fb7/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9623703a-14ca-4edf-b006-4e36e8ff5fb7/bin/uautomizer-ug76WZFUDN --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 e37e45521ffb127b83b9baab443e42b7c078cf8a8451cb2a1813ac325e01717d --- 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-6b4ec56 [2022-11-20 12:41:36,812 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:41:36,815 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:41:36,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:41:36,840 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:41:36,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:41:36,843 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:41:36,844 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:41:36,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:41:36,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:41:36,848 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:41:36,849 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:41:36,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:41:36,851 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:41:36,852 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:41:36,853 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:41:36,854 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:41:36,855 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:41:36,857 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:41:36,859 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:41:36,860 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:41:36,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:41:36,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:41:36,863 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:41:36,867 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:41:36,867 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:41:36,868 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:41:36,869 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:41:36,869 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:41:36,870 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:41:36,871 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:41:36,872 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:41:36,873 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:41:36,874 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:41:36,875 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:41:36,875 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:41:36,876 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:41:36,876 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:41:36,877 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:41:36,878 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:41:36,879 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:41:36,880 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9623703a-14ca-4edf-b006-4e36e8ff5fb7/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 12:41:36,903 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:41:36,903 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:41:36,904 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:41:36,904 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:41:36,905 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:41:36,905 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:41:36,906 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:41:36,906 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:41:36,906 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:41:36,907 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:41:36,907 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:41:36,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:41:36,907 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:41:36,908 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:41:36,908 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:41:36,908 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:41:36,908 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:41:36,908 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:41:36,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:41:36,909 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:41:36,909 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:41:36,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:41:36,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:41:36,910 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:41:36,910 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:41:36,910 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:41:36,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:41:36,911 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:41:36,911 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:41:36,911 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:41:36,911 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_9623703a-14ca-4edf-b006-4e36e8ff5fb7/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9623703a-14ca-4edf-b006-4e36e8ff5fb7/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e37e45521ffb127b83b9baab443e42b7c078cf8a8451cb2a1813ac325e01717d [2022-11-20 12:41:37,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:41:37,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:41:37,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:41:37,241 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:41:37,242 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:41:37,243 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9623703a-14ca-4edf-b006-4e36e8ff5fb7/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--gpu--drm--ast--ast.ko-main.cil.out.i [2022-11-20 12:41:40,374 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:41:41,179 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:41:41,180 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9623703a-14ca-4edf-b006-4e36e8ff5fb7/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--gpu--drm--ast--ast.ko-main.cil.out.i [2022-11-20 12:41:41,236 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9623703a-14ca-4edf-b006-4e36e8ff5fb7/bin/uautomizer-ug76WZFUDN/data/6c26e9646/c93b07faffb348fab782b3767cad033d/FLAGc43cc5760 [2022-11-20 12:41:41,254 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9623703a-14ca-4edf-b006-4e36e8ff5fb7/bin/uautomizer-ug76WZFUDN/data/6c26e9646/c93b07faffb348fab782b3767cad033d [2022-11-20 12:41:41,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:41:41,259 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:41:41,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:41:41,261 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:41:41,265 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:41:41,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:41:41" (1/1) ... [2022-11-20 12:41:41,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f7b2bf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:41:41, skipping insertion in model container [2022-11-20 12:41:41,267 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:41:41" (1/1) ... [2022-11-20 12:41:41,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:41:41,520 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:41:45,530 WARN L237 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_9623703a-14ca-4edf-b006-4e36e8ff5fb7/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--gpu--drm--ast--ast.ko-main.cil.out.i[353005,353018] [2022-11-20 12:41:45,798 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:41:45,919 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:41:46,470 WARN L237 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_9623703a-14ca-4edf-b006-4e36e8ff5fb7/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--gpu--drm--ast--ast.ko-main.cil.out.i[353005,353018] [2022-11-20 12:41:46,495 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:41:46,906 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:41:46,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:41:46 WrapperNode [2022-11-20 12:41:46,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:41:46,910 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:41:46,910 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:41:46,910 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:41:46,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:41:46" (1/1) ... [2022-11-20 12:41:47,081 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:41:46" (1/1) ... [2022-11-20 12:41:47,575 INFO L138 Inliner]: procedures = 511, calls = 3849, calls flagged for inlining = 265, calls inlined = 264, statements flattened = 9568 [2022-11-20 12:41:47,576 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:41:47,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:41:47,577 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:41:47,577 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:41:47,587 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:41:46" (1/1) ... [2022-11-20 12:41:47,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:41:46" (1/1) ... [2022-11-20 12:41:47,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:41:46" (1/1) ... [2022-11-20 12:41:47,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:41:46" (1/1) ... [2022-11-20 12:41:47,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:41:46" (1/1) ... [2022-11-20 12:41:47,937 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:41:46" (1/1) ... [2022-11-20 12:41:47,981 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:41:46" (1/1) ... [2022-11-20 12:41:47,998 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:41:46" (1/1) ... [2022-11-20 12:41:48,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:41:48,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:41:48,045 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:41:48,045 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:41:48,047 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:41:46" (1/1) ... [2022-11-20 12:41:48,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:41:48,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9623703a-14ca-4edf-b006-4e36e8ff5fb7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:41:48,081 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9623703a-14ca-4edf-b006-4e36e8ff5fb7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:41:48,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9623703a-14ca-4edf-b006-4e36e8ff5fb7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:41:48,125 INFO L130 BoogieDeclarations]: Found specification of procedure drm_global_item_ref [2022-11-20 12:41:48,125 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_global_item_ref [2022-11-20 12:41:48,125 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 12:41:48,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 12:41:48,126 INFO L130 BoogieDeclarations]: Found specification of procedure ast_drm_freeze [2022-11-20 12:41:48,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_drm_freeze [2022-11-20 12:41:48,126 INFO L130 BoogieDeclarations]: Found specification of procedure drm_helper_probe_single_connector_modes [2022-11-20 12:41:48,126 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_helper_probe_single_connector_modes [2022-11-20 12:41:48,127 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_dpms [2022-11-20 12:41:48,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_dpms [2022-11-20 12:41:48,128 INFO L130 BoogieDeclarations]: Found specification of procedure ast_bo_pin [2022-11-20 12:41:48,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_bo_pin [2022-11-20 12:41:48,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_struct_mutex_of_drm_device [2022-11-20 12:41:48,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_struct_mutex_of_drm_device [2022-11-20 12:41:48,128 INFO L130 BoogieDeclarations]: Found specification of procedure ast_read32 [2022-11-20 12:41:48,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_read32 [2022-11-20 12:41:48,129 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-20 12:41:48,129 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-20 12:41:48,129 INFO L130 BoogieDeclarations]: Found specification of procedure cbr_dll2 [2022-11-20 12:41:48,129 INFO L138 BoogieDeclarations]: Found implementation of procedure cbr_dll2 [2022-11-20 12:41:48,129 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_mode_fixup [2022-11-20 12:41:48,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_mode_fixup [2022-11-20 12:41:48,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:41:48,130 INFO L130 BoogieDeclarations]: Found specification of procedure moutdwm [2022-11-20 12:41:48,130 INFO L138 BoogieDeclarations]: Found implementation of procedure moutdwm [2022-11-20 12:41:48,130 INFO L130 BoogieDeclarations]: Found specification of procedure ast_drm_thaw [2022-11-20 12:41:48,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_drm_thaw [2022-11-20 12:41:48,130 INFO L130 BoogieDeclarations]: Found specification of procedure ast_dirty_update [2022-11-20 12:41:48,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_dirty_update [2022-11-20 12:41:48,131 INFO L130 BoogieDeclarations]: Found specification of procedure ast_set_index_reg_mask [2022-11-20 12:41:48,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_set_index_reg_mask [2022-11-20 12:41:48,131 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_kmap [2022-11-20 12:41:48,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_bo_kmap [2022-11-20 12:41:48,132 INFO L130 BoogieDeclarations]: Found specification of procedure ast_ttm_placement [2022-11-20 12:41:48,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_ttm_placement [2022-11-20 12:41:48,133 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_load_lut [2022-11-20 12:41:48,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_load_lut [2022-11-20 12:41:48,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-20 12:41:48,134 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_kunmap [2022-11-20 12:41:48,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_bo_kunmap [2022-11-20 12:41:48,134 INFO L130 BoogieDeclarations]: Found specification of procedure drm_global_item_unref [2022-11-20 12:41:48,135 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_global_item_unref [2022-11-20 12:41:48,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-20 12:41:48,135 INFO L130 BoogieDeclarations]: Found specification of procedure ast_user_framebuffer_destroy [2022-11-20 12:41:48,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_user_framebuffer_destroy [2022-11-20 12:41:48,136 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_disable [2022-11-20 12:41:48,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_disable [2022-11-20 12:41:48,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:41:48,136 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_mode_set_base [2022-11-20 12:41:48,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_mode_set_base [2022-11-20 12:41:48,137 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2022-11-20 12:41:48,137 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2022-11-20 12:41:48,137 INFO L130 BoogieDeclarations]: Found specification of procedure mindwm [2022-11-20 12:41:48,137 INFO L138 BoogieDeclarations]: Found implementation of procedure mindwm [2022-11-20 12:41:48,137 INFO L130 BoogieDeclarations]: Found specification of procedure ast_io_read8 [2022-11-20 12:41:48,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_io_read8 [2022-11-20 12:41:48,138 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-11-20 12:41:48,139 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-11-20 12:41:48,139 INFO L130 BoogieDeclarations]: Found specification of procedure ast_user_framebuffer_create_handle [2022-11-20 12:41:48,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_user_framebuffer_create_handle [2022-11-20 12:41:48,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:41:48,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:41:48,139 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_gamma_set [2022-11-20 12:41:48,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_gamma_set [2022-11-20 12:41:48,140 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-20 12:41:48,140 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-20 12:41:48,140 INFO L130 BoogieDeclarations]: Found specification of procedure ast_fbdev_set_suspend [2022-11-20 12:41:48,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_fbdev_set_suspend [2022-11-20 12:41:48,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 12:41:48,141 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 12:41:48,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 12:41:48,141 INFO L130 BoogieDeclarations]: Found specification of procedure ast_framebuffer_init [2022-11-20 12:41:48,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_framebuffer_init [2022-11-20 12:41:48,141 INFO L130 BoogieDeclarations]: Found specification of procedure ast_cursor_set [2022-11-20 12:41:48,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_cursor_set [2022-11-20 12:41:48,142 INFO L130 BoogieDeclarations]: Found specification of procedure ast_open_key [2022-11-20 12:41:48,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_open_key [2022-11-20 12:41:48,142 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_validate [2022-11-20 12:41:48,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_bo_validate [2022-11-20 12:41:48,143 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_test_burst2 [2022-11-20 12:41:48,143 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_test_burst2 [2022-11-20 12:41:48,143 INFO L130 BoogieDeclarations]: Found specification of procedure ast_bo_unreserve [2022-11-20 12:41:48,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_bo_unreserve [2022-11-20 12:41:48,144 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-20 12:41:48,144 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-20 12:41:48,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:41:48,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:41:48,145 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-11-20 12:41:48,146 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-11-20 12:41:48,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 12:41:48,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 12:41:48,146 INFO L130 BoogieDeclarations]: Found specification of procedure ast_connector_detect [2022-11-20 12:41:48,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_connector_detect [2022-11-20 12:41:48,147 INFO L130 BoogieDeclarations]: Found specification of procedure ast_encoder_prepare [2022-11-20 12:41:48,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_encoder_prepare [2022-11-20 12:41:48,147 INFO L130 BoogieDeclarations]: Found specification of procedure ast_get_index_reg_mask [2022-11-20 12:41:48,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_get_index_reg_mask [2022-11-20 12:41:48,147 INFO L130 BoogieDeclarations]: Found specification of procedure ast_gem_create [2022-11-20 12:41:48,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_gem_create [2022-11-20 12:41:48,148 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_prepare [2022-11-20 12:41:48,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_prepare [2022-11-20 12:41:48,149 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-20 12:41:48,149 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-20 12:41:48,149 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-20 12:41:48,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-20 12:41:48,149 INFO L130 BoogieDeclarations]: Found specification of procedure ast_bo_reserve [2022-11-20 12:41:48,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_bo_reserve [2022-11-20 12:41:48,150 INFO L130 BoogieDeclarations]: Found specification of procedure drm_gem_object_unreference_unlocked [2022-11-20 12:41:48,150 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_gem_object_unreference_unlocked [2022-11-20 12:41:48,150 INFO L130 BoogieDeclarations]: Found specification of procedure ast_mmap [2022-11-20 12:41:48,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_mmap [2022-11-20 12:41:48,151 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-20 12:41:48,151 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-20 12:41:48,151 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-20 12:41:48,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-20 12:41:48,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:41:48,151 INFO L130 BoogieDeclarations]: Found specification of procedure drm_gem_object_free [2022-11-20 12:41:48,152 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_global_release [2022-11-20 12:41:48,153 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_struct_mutex_of_drm_device [2022-11-20 12:41:48,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_struct_mutex_of_drm_device [2022-11-20 12:41:48,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 12:41:48,157 INFO L130 BoogieDeclarations]: Found specification of procedure ast_connector_destroy [2022-11-20 12:41:48,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_connector_destroy [2022-11-20 12:41:48,159 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_commit [2022-11-20 12:41:48,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_commit [2022-11-20 12:41:48,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 12:41:48,160 INFO L130 BoogieDeclarations]: Found specification of procedure ast_pm_resume [2022-11-20 12:41:48,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_pm_resume [2022-11-20 12:41:48,166 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-20 12:41:48,166 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-20 12:41:48,166 INFO L130 BoogieDeclarations]: Found specification of procedure ast_io_write8 [2022-11-20 12:41:48,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_io_write8 [2022-11-20 12:41:48,167 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_kmap_obj_virtual [2022-11-20 12:41:48,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_kmap_obj_virtual [2022-11-20 12:41:48,167 INFO L130 BoogieDeclarations]: Found specification of procedure ast_encoder_destroy [2022-11-20 12:41:48,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_encoder_destroy [2022-11-20 12:41:48,168 INFO L130 BoogieDeclarations]: Found specification of procedure ast_bo_gpu_offset [2022-11-20 12:41:48,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_bo_gpu_offset [2022-11-20 12:41:48,168 INFO L130 BoogieDeclarations]: Found specification of procedure ast_write32 [2022-11-20 12:41:48,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_write32 [2022-11-20 12:41:48,168 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_reset [2022-11-20 12:41:48,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_reset [2022-11-20 12:41:48,169 INFO L130 BoogieDeclarations]: Found specification of procedure ast_gem_free_object [2022-11-20 12:41:48,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_gem_free_object [2022-11-20 12:41:48,169 INFO L130 BoogieDeclarations]: Found specification of procedure drm_gem_object_unreference_unlocked___0 [2022-11-20 12:41:48,169 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_gem_object_unreference_unlocked___0 [2022-11-20 12:41:48,169 INFO L130 BoogieDeclarations]: Found specification of procedure ast_ttm_backend_destroy [2022-11-20 12:41:48,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_ttm_backend_destroy [2022-11-20 12:41:48,170 INFO L130 BoogieDeclarations]: Found specification of procedure ast_pci_remove [2022-11-20 12:41:48,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_pci_remove [2022-11-20 12:41:48,170 INFO L130 BoogieDeclarations]: Found specification of procedure drm_helper_connector_dpms [2022-11-20 12:41:48,170 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_helper_connector_dpms [2022-11-20 12:41:48,170 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_mode_set [2022-11-20 12:41:48,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_mode_set [2022-11-20 12:41:48,171 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_test_single2 [2022-11-20 12:41:48,171 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_test_single2 [2022-11-20 12:41:48,171 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-20 12:41:48,171 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-20 12:41:48,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:41:48,171 INFO L130 BoogieDeclarations]: Found specification of procedure ast_set_index_reg [2022-11-20 12:41:48,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_set_index_reg [2022-11-20 12:41:48,172 INFO L130 BoogieDeclarations]: Found specification of procedure cbrdlli_ast2150 [2022-11-20 12:41:48,173 INFO L138 BoogieDeclarations]: Found implementation of procedure cbrdlli_ast2150 [2022-11-20 12:41:48,173 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 12:41:48,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 12:41:48,173 INFO L130 BoogieDeclarations]: Found specification of procedure drm_fasync [2022-11-20 12:41:48,173 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_fasync [2022-11-20 12:41:48,173 INFO L130 BoogieDeclarations]: Found specification of procedure drm_framebuffer_cleanup [2022-11-20 12:41:48,173 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_framebuffer_cleanup [2022-11-20 12:41:48,174 INFO L130 BoogieDeclarations]: Found specification of procedure ast_encoder_commit [2022-11-20 12:41:48,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_encoder_commit [2022-11-20 12:41:48,174 INFO L130 BoogieDeclarations]: Found specification of procedure drm_crtc_helper_set_config [2022-11-20 12:41:48,174 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_crtc_helper_set_config [2022-11-20 12:41:48,175 INFO L130 BoogieDeclarations]: Found specification of procedure console_lock [2022-11-20 12:41:48,175 INFO L138 BoogieDeclarations]: Found implementation of procedure console_lock [2022-11-20 12:41:48,175 INFO L130 BoogieDeclarations]: Found specification of procedure ast_cursor_move [2022-11-20 12:41:48,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_cursor_move [2022-11-20 12:41:48,175 INFO L130 BoogieDeclarations]: Found specification of procedure console_unlock [2022-11-20 12:41:48,175 INFO L138 BoogieDeclarations]: Found implementation of procedure console_unlock [2022-11-20 12:41:48,175 INFO L130 BoogieDeclarations]: Found specification of procedure drm_poll [2022-11-20 12:41:48,176 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_poll [2022-11-20 12:41:48,176 INFO L130 BoogieDeclarations]: Found specification of procedure drm_mode_connector_update_edid_property [2022-11-20 12:41:48,176 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_mode_connector_update_edid_property [2022-11-20 12:41:48,176 INFO L130 BoogieDeclarations]: Found specification of procedure cbr_scan2 [2022-11-20 12:41:48,176 INFO L138 BoogieDeclarations]: Found implementation of procedure cbr_scan2 [2022-11-20 12:41:48,176 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-20 12:41:48,176 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-20 12:41:48,177 INFO L130 BoogieDeclarations]: Found specification of procedure ast_ttm_tt_unpopulate [2022-11-20 12:41:48,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_ttm_tt_unpopulate [2022-11-20 12:41:48,177 INFO L130 BoogieDeclarations]: Found specification of procedure drm_gem_object_lookup [2022-11-20 12:41:48,177 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_gem_object_lookup [2022-11-20 12:41:48,177 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_destroy [2022-11-20 12:41:48,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_destroy [2022-11-20 12:41:48,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:41:49,349 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:41:49,352 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:42:08,142 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ast_gem_init_object_returnLabel#1: main_#t~ret94#1 := ast_gem_init_object_#res#1;assume { :end_inline_ast_gem_init_object } true;assume -2147483648 <= main_#t~ret94#1 && main_#t~ret94#1 <= 2147483647;havoc main_#t~ret94#1;~ldv_state_variable_13~0 := 1; [2022-11-20 12:42:08,353 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:42:08,391 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:42:08,392 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 12:42:08,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:42:08 BoogieIcfgContainer [2022-11-20 12:42:08,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:42:08,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:42:08,406 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:42:08,410 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:42:08,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:41:41" (1/3) ... [2022-11-20 12:42:08,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d8fed17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:42:08, skipping insertion in model container [2022-11-20 12:42:08,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:41:46" (2/3) ... [2022-11-20 12:42:08,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d8fed17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:42:08, skipping insertion in model container [2022-11-20 12:42:08,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:42:08" (3/3) ... [2022-11-20 12:42:08,414 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--gpu--drm--ast--ast.ko-main.cil.out.i [2022-11-20 12:42:08,436 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:42:08,437 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:42:08,565 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:42:08,575 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;@bebfeef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:42:08,575 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 12:42:08,591 INFO L276 IsEmpty]: Start isEmpty. Operand has 2567 states, 1830 states have (on average 1.4382513661202185) internal successors, (2632), 1888 states have internal predecessors, (2632), 647 states have call successors, (647), 88 states have call predecessors, (647), 88 states have return successors, (647), 627 states have call predecessors, (647), 647 states have call successors, (647) [2022-11-20 12:42:08,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 12:42:08,610 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:08,611 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:08,612 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:08,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:08,620 INFO L85 PathProgramCache]: Analyzing trace with hash 337448765, now seen corresponding path program 1 times [2022-11-20 12:42:08,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:42:08,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992467242] [2022-11-20 12:42:08,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:08,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:42:09,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:09,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:09,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:42:09,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992467242] [2022-11-20 12:42:09,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992467242] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:09,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:09,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:42:09,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203791455] [2022-11-20 12:42:09,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:09,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:42:09,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:42:09,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:42:09,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:42:09,705 INFO L87 Difference]: Start difference. First operand has 2567 states, 1830 states have (on average 1.4382513661202185) internal successors, (2632), 1888 states have internal predecessors, (2632), 647 states have call successors, (647), 88 states have call predecessors, (647), 88 states have return successors, (647), 627 states have call predecessors, (647), 647 states have call successors, (647) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:10,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:10,477 INFO L93 Difference]: Finished difference Result 7664 states and 11853 transitions. [2022-11-20 12:42:10,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:42:10,479 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-20 12:42:10,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:10,549 INFO L225 Difference]: With dead ends: 7664 [2022-11-20 12:42:10,549 INFO L226 Difference]: Without dead ends: 5094 [2022-11-20 12:42:10,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:42:10,573 INFO L413 NwaCegarLoop]: 4713 mSDtfsCounter, 3868 mSDsluCounter, 3892 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3868 SdHoareTripleChecker+Valid, 8605 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:10,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3868 Valid, 8605 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:42:10,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5094 states. [2022-11-20 12:42:11,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5094 to 5088. [2022-11-20 12:42:11,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5088 states, 3630 states have (on average 1.4358126721763085) internal successors, (5212), 3732 states have internal predecessors, (5212), 1283 states have call successors, (1283), 175 states have call predecessors, (1283), 174 states have return successors, (1272), 1232 states have call predecessors, (1272), 1272 states have call successors, (1272) [2022-11-20 12:42:11,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5088 states to 5088 states and 7767 transitions. [2022-11-20 12:42:11,100 INFO L78 Accepts]: Start accepts. Automaton has 5088 states and 7767 transitions. Word has length 18 [2022-11-20 12:42:11,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:11,102 INFO L495 AbstractCegarLoop]: Abstraction has 5088 states and 7767 transitions. [2022-11-20 12:42:11,102 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:11,103 INFO L276 IsEmpty]: Start isEmpty. Operand 5088 states and 7767 transitions. [2022-11-20 12:42:11,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-20 12:42:11,111 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:11,111 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:11,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:42:11,111 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:11,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:11,112 INFO L85 PathProgramCache]: Analyzing trace with hash 392291437, now seen corresponding path program 1 times [2022-11-20 12:42:11,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:42:11,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339973463] [2022-11-20 12:42:11,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:11,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:42:11,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:11,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:11,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:42:11,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339973463] [2022-11-20 12:42:11,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339973463] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:11,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:11,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:42:11,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959866759] [2022-11-20 12:42:11,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:11,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:42:11,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:42:11,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:42:11,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:42:11,784 INFO L87 Difference]: Start difference. First operand 5088 states and 7767 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:12,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:12,402 INFO L93 Difference]: Finished difference Result 14687 states and 22443 transitions. [2022-11-20 12:42:12,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:42:12,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-20 12:42:12,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:12,480 INFO L225 Difference]: With dead ends: 14687 [2022-11-20 12:42:12,480 INFO L226 Difference]: Without dead ends: 9602 [2022-11-20 12:42:12,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:42:12,618 INFO L413 NwaCegarLoop]: 4555 mSDtfsCounter, 3468 mSDsluCounter, 3880 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3468 SdHoareTripleChecker+Valid, 8435 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:12,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3468 Valid, 8435 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:42:12,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9602 states. [2022-11-20 12:42:13,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9602 to 9579. [2022-11-20 12:42:13,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9579 states, 6795 states have (on average 1.4384105960264901) internal successors, (9774), 6987 states have internal predecessors, (9774), 2443 states have call successors, (2443), 341 states have call predecessors, (2443), 340 states have return successors, (2432), 2352 states have call predecessors, (2432), 2432 states have call successors, (2432) [2022-11-20 12:42:13,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9579 states to 9579 states and 14649 transitions. [2022-11-20 12:42:13,654 INFO L78 Accepts]: Start accepts. Automaton has 9579 states and 14649 transitions. Word has length 23 [2022-11-20 12:42:13,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:13,655 INFO L495 AbstractCegarLoop]: Abstraction has 9579 states and 14649 transitions. [2022-11-20 12:42:13,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:13,656 INFO L276 IsEmpty]: Start isEmpty. Operand 9579 states and 14649 transitions. [2022-11-20 12:42:13,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 12:42:13,660 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:13,660 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:13,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:42:13,661 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:13,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:13,661 INFO L85 PathProgramCache]: Analyzing trace with hash -541463186, now seen corresponding path program 1 times [2022-11-20 12:42:13,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:42:13,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445957939] [2022-11-20 12:42:13,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:13,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:42:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:14,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:14,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:42:14,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445957939] [2022-11-20 12:42:14,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445957939] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:14,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:14,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:42:14,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002099663] [2022-11-20 12:42:14,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:14,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:42:14,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:42:14,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:42:14,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:42:14,281 INFO L87 Difference]: Start difference. First operand 9579 states and 14649 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:15,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:15,007 INFO L93 Difference]: Finished difference Result 19178 states and 29327 transitions. [2022-11-20 12:42:15,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:42:15,007 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-20 12:42:15,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:15,090 INFO L225 Difference]: With dead ends: 19178 [2022-11-20 12:42:15,090 INFO L226 Difference]: Without dead ends: 9602 [2022-11-20 12:42:15,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:42:15,145 INFO L413 NwaCegarLoop]: 3902 mSDtfsCounter, 34 mSDsluCounter, 7799 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 11701 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:15,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 11701 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:42:15,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9602 states. [2022-11-20 12:42:15,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9602 to 9582. [2022-11-20 12:42:15,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9582 states, 6798 states have (on average 1.4382171226831422) internal successors, (9777), 6990 states have internal predecessors, (9777), 2443 states have call successors, (2443), 341 states have call predecessors, (2443), 340 states have return successors, (2432), 2352 states have call predecessors, (2432), 2432 states have call successors, (2432) [2022-11-20 12:42:16,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9582 states to 9582 states and 14652 transitions. [2022-11-20 12:42:16,017 INFO L78 Accepts]: Start accepts. Automaton has 9582 states and 14652 transitions. Word has length 22 [2022-11-20 12:42:16,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:16,017 INFO L495 AbstractCegarLoop]: Abstraction has 9582 states and 14652 transitions. [2022-11-20 12:42:16,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:16,018 INFO L276 IsEmpty]: Start isEmpty. Operand 9582 states and 14652 transitions. [2022-11-20 12:42:16,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 12:42:16,020 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:16,020 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:16,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:42:16,020 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:16,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:16,021 INFO L85 PathProgramCache]: Analyzing trace with hash -484204884, now seen corresponding path program 1 times [2022-11-20 12:42:16,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:42:16,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016065525] [2022-11-20 12:42:16,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:16,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:42:16,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:16,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:16,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:42:16,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016065525] [2022-11-20 12:42:16,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016065525] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:16,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:16,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:42:16,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305272254] [2022-11-20 12:42:16,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:16,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:42:16,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:42:16,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:42:16,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:42:16,399 INFO L87 Difference]: Start difference. First operand 9582 states and 14652 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:16,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:16,966 INFO L93 Difference]: Finished difference Result 9584 states and 14653 transitions. [2022-11-20 12:42:16,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:42:16,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-20 12:42:16,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:17,031 INFO L225 Difference]: With dead ends: 9584 [2022-11-20 12:42:17,031 INFO L226 Difference]: Without dead ends: 9581 [2022-11-20 12:42:17,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:42:17,048 INFO L413 NwaCegarLoop]: 3902 mSDtfsCounter, 3884 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3884 SdHoareTripleChecker+Valid, 3902 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:17,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3884 Valid, 3902 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:42:17,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9581 states. [2022-11-20 12:42:18,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9581 to 9581. [2022-11-20 12:42:18,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9581 states, 6798 states have (on average 1.4380700205942925) internal successors, (9776), 6989 states have internal predecessors, (9776), 2442 states have call successors, (2442), 341 states have call predecessors, (2442), 340 states have return successors, (2432), 2352 states have call predecessors, (2432), 2432 states have call successors, (2432) [2022-11-20 12:42:18,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9581 states to 9581 states and 14650 transitions. [2022-11-20 12:42:18,215 INFO L78 Accepts]: Start accepts. Automaton has 9581 states and 14650 transitions. Word has length 22 [2022-11-20 12:42:18,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:18,216 INFO L495 AbstractCegarLoop]: Abstraction has 9581 states and 14650 transitions. [2022-11-20 12:42:18,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:18,216 INFO L276 IsEmpty]: Start isEmpty. Operand 9581 states and 14650 transitions. [2022-11-20 12:42:18,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-20 12:42:18,220 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:18,220 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:18,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:42:18,221 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:18,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:18,222 INFO L85 PathProgramCache]: Analyzing trace with hash -2126562970, now seen corresponding path program 1 times [2022-11-20 12:42:18,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:42:18,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078034594] [2022-11-20 12:42:18,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:18,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:42:18,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:18,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:18,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:42:18,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078034594] [2022-11-20 12:42:18,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078034594] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:18,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:18,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:42:18,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83832605] [2022-11-20 12:42:18,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:18,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:42:18,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:42:18,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:42:18,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:42:18,718 INFO L87 Difference]: Start difference. First operand 9581 states and 14650 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:19,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:19,292 INFO L93 Difference]: Finished difference Result 9583 states and 14651 transitions. [2022-11-20 12:42:19,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:42:19,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-20 12:42:19,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:19,348 INFO L225 Difference]: With dead ends: 9583 [2022-11-20 12:42:19,348 INFO L226 Difference]: Without dead ends: 9580 [2022-11-20 12:42:19,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:42:19,357 INFO L413 NwaCegarLoop]: 3900 mSDtfsCounter, 3881 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3881 SdHoareTripleChecker+Valid, 3900 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:19,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3881 Valid, 3900 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:42:19,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9580 states. [2022-11-20 12:42:20,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9580 to 9580. [2022-11-20 12:42:20,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9580 states, 6798 states have (on average 1.4379229185054427) internal successors, (9775), 6988 states have internal predecessors, (9775), 2441 states have call successors, (2441), 341 states have call predecessors, (2441), 340 states have return successors, (2432), 2352 states have call predecessors, (2432), 2432 states have call successors, (2432) [2022-11-20 12:42:20,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9580 states to 9580 states and 14648 transitions. [2022-11-20 12:42:20,398 INFO L78 Accepts]: Start accepts. Automaton has 9580 states and 14648 transitions. Word has length 23 [2022-11-20 12:42:20,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:20,399 INFO L495 AbstractCegarLoop]: Abstraction has 9580 states and 14648 transitions. [2022-11-20 12:42:20,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:20,399 INFO L276 IsEmpty]: Start isEmpty. Operand 9580 states and 14648 transitions. [2022-11-20 12:42:20,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 12:42:20,403 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:20,403 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:20,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:42:20,403 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:20,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:20,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1500051217, now seen corresponding path program 1 times [2022-11-20 12:42:20,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:42:20,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306296879] [2022-11-20 12:42:20,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:20,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:42:20,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:20,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:20,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:42:20,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306296879] [2022-11-20 12:42:20,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306296879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:20,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:20,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:42:20,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968208597] [2022-11-20 12:42:20,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:20,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:42:20,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:42:20,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:42:20,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:42:20,793 INFO L87 Difference]: Start difference. First operand 9580 states and 14648 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:21,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:21,439 INFO L93 Difference]: Finished difference Result 9582 states and 14649 transitions. [2022-11-20 12:42:21,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:42:21,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-20 12:42:21,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:21,487 INFO L225 Difference]: With dead ends: 9582 [2022-11-20 12:42:21,487 INFO L226 Difference]: Without dead ends: 9579 [2022-11-20 12:42:21,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:42:21,495 INFO L413 NwaCegarLoop]: 3898 mSDtfsCounter, 3878 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3878 SdHoareTripleChecker+Valid, 3898 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:21,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3878 Valid, 3898 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:42:21,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9579 states. [2022-11-20 12:42:22,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9579 to 9579. [2022-11-20 12:42:22,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9579 states, 6798 states have (on average 1.437775816416593) internal successors, (9774), 6987 states have internal predecessors, (9774), 2440 states have call successors, (2440), 341 states have call predecessors, (2440), 340 states have return successors, (2432), 2352 states have call predecessors, (2432), 2432 states have call successors, (2432) [2022-11-20 12:42:22,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9579 states to 9579 states and 14646 transitions. [2022-11-20 12:42:22,786 INFO L78 Accepts]: Start accepts. Automaton has 9579 states and 14646 transitions. Word has length 24 [2022-11-20 12:42:22,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:22,787 INFO L495 AbstractCegarLoop]: Abstraction has 9579 states and 14646 transitions. [2022-11-20 12:42:22,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:22,787 INFO L276 IsEmpty]: Start isEmpty. Operand 9579 states and 14646 transitions. [2022-11-20 12:42:22,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 12:42:22,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:22,790 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:22,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:42:22,791 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:22,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:22,792 INFO L85 PathProgramCache]: Analyzing trace with hash 741948809, now seen corresponding path program 1 times [2022-11-20 12:42:22,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:42:22,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279914389] [2022-11-20 12:42:22,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:22,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:42:22,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:23,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:23,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:42:23,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279914389] [2022-11-20 12:42:23,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279914389] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:23,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:23,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:42:23,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388362080] [2022-11-20 12:42:23,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:23,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:42:23,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:42:23,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:42:23,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:42:23,301 INFO L87 Difference]: Start difference. First operand 9579 states and 14646 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:24,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:24,164 INFO L93 Difference]: Finished difference Result 9581 states and 14647 transitions. [2022-11-20 12:42:24,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:42:24,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-20 12:42:24,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:24,229 INFO L225 Difference]: With dead ends: 9581 [2022-11-20 12:42:24,229 INFO L226 Difference]: Without dead ends: 9578 [2022-11-20 12:42:24,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:42:24,240 INFO L413 NwaCegarLoop]: 3896 mSDtfsCounter, 3875 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3875 SdHoareTripleChecker+Valid, 3896 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:24,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3875 Valid, 3896 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:42:24,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9578 states. [2022-11-20 12:42:25,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9578 to 9578. [2022-11-20 12:42:25,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9578 states, 6798 states have (on average 1.4376287143277435) internal successors, (9773), 6986 states have internal predecessors, (9773), 2439 states have call successors, (2439), 341 states have call predecessors, (2439), 340 states have return successors, (2432), 2352 states have call predecessors, (2432), 2432 states have call successors, (2432) [2022-11-20 12:42:25,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9578 states to 9578 states and 14644 transitions. [2022-11-20 12:42:25,254 INFO L78 Accepts]: Start accepts. Automaton has 9578 states and 14644 transitions. Word has length 25 [2022-11-20 12:42:25,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:25,255 INFO L495 AbstractCegarLoop]: Abstraction has 9578 states and 14644 transitions. [2022-11-20 12:42:25,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:25,255 INFO L276 IsEmpty]: Start isEmpty. Operand 9578 states and 14644 transitions. [2022-11-20 12:42:25,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 12:42:25,261 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:25,261 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:25,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:42:25,262 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:25,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:25,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1520640731, now seen corresponding path program 1 times [2022-11-20 12:42:25,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:42:25,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579852786] [2022-11-20 12:42:25,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:25,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:42:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:25,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:25,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:42:25,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579852786] [2022-11-20 12:42:25,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579852786] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:25,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:25,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:42:25,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060616900] [2022-11-20 12:42:25,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:25,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:42:25,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:42:25,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:42:25,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:42:25,750 INFO L87 Difference]: Start difference. First operand 9578 states and 14644 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:27,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:27,232 INFO L93 Difference]: Finished difference Result 28647 states and 43804 transitions. [2022-11-20 12:42:27,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:42:27,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-20 12:42:27,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:27,321 INFO L225 Difference]: With dead ends: 28647 [2022-11-20 12:42:27,321 INFO L226 Difference]: Without dead ends: 19072 [2022-11-20 12:42:27,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:42:27,368 INFO L413 NwaCegarLoop]: 5124 mSDtfsCounter, 3851 mSDsluCounter, 3879 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3851 SdHoareTripleChecker+Valid, 9003 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:27,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3851 Valid, 9003 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:42:27,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19072 states. [2022-11-20 12:42:29,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19072 to 19050. [2022-11-20 12:42:29,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19050 states, 13514 states have (on average 1.4373982536628682) internal successors, (19425), 13884 states have internal predecessors, (19425), 4859 states have call successors, (4859), 677 states have call predecessors, (4859), 676 states have return successors, (4852), 4692 states have call predecessors, (4852), 4852 states have call successors, (4852) [2022-11-20 12:42:29,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19050 states to 19050 states and 29136 transitions. [2022-11-20 12:42:29,475 INFO L78 Accepts]: Start accepts. Automaton has 19050 states and 29136 transitions. Word has length 29 [2022-11-20 12:42:29,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:29,476 INFO L495 AbstractCegarLoop]: Abstraction has 19050 states and 29136 transitions. [2022-11-20 12:42:29,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:29,477 INFO L276 IsEmpty]: Start isEmpty. Operand 19050 states and 29136 transitions. [2022-11-20 12:42:29,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 12:42:29,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:29,480 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:29,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:42:29,480 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:29,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:29,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1524477746, now seen corresponding path program 1 times [2022-11-20 12:42:29,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:42:29,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442685386] [2022-11-20 12:42:29,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:29,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:42:29,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:29,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:29,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:42:29,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442685386] [2022-11-20 12:42:29,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442685386] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:29,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:29,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:42:29,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451404722] [2022-11-20 12:42:29,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:29,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:42:29,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:42:29,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:42:29,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:42:29,956 INFO L87 Difference]: Start difference. First operand 19050 states and 29136 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:31,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:31,593 INFO L93 Difference]: Finished difference Result 19078 states and 29154 transitions. [2022-11-20 12:42:31,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:42:31,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-20 12:42:31,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:31,684 INFO L225 Difference]: With dead ends: 19078 [2022-11-20 12:42:31,684 INFO L226 Difference]: Without dead ends: 19074 [2022-11-20 12:42:31,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:42:31,696 INFO L413 NwaCegarLoop]: 3891 mSDtfsCounter, 3860 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3860 SdHoareTripleChecker+Valid, 3900 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:31,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3860 Valid, 3900 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:42:31,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19074 states. [2022-11-20 12:42:33,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19074 to 19072. [2022-11-20 12:42:33,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19072 states, 13530 states have (on average 1.4362158167036216) internal successors, (19432), 13898 states have internal predecessors, (19432), 4857 states have call successors, (4857), 685 states have call predecessors, (4857), 684 states have return successors, (4852), 4692 states have call predecessors, (4852), 4852 states have call successors, (4852) [2022-11-20 12:42:33,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19072 states to 19072 states and 29141 transitions. [2022-11-20 12:42:33,274 INFO L78 Accepts]: Start accepts. Automaton has 19072 states and 29141 transitions. Word has length 26 [2022-11-20 12:42:33,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:33,274 INFO L495 AbstractCegarLoop]: Abstraction has 19072 states and 29141 transitions. [2022-11-20 12:42:33,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:33,275 INFO L276 IsEmpty]: Start isEmpty. Operand 19072 states and 29141 transitions. [2022-11-20 12:42:33,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-20 12:42:33,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:33,278 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:33,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 12:42:33,279 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:33,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:33,285 INFO L85 PathProgramCache]: Analyzing trace with hash 13075884, now seen corresponding path program 1 times [2022-11-20 12:42:33,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:42:33,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860969936] [2022-11-20 12:42:33,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:33,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:42:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:33,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:33,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:42:33,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860969936] [2022-11-20 12:42:33,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860969936] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:33,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:33,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:42:33,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662569220] [2022-11-20 12:42:33,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:33,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:42:33,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:42:33,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:42:33,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:42:33,680 INFO L87 Difference]: Start difference. First operand 19072 states and 29141 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:35,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:35,902 INFO L93 Difference]: Finished difference Result 39363 states and 59732 transitions. [2022-11-20 12:42:35,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:42:35,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-20 12:42:35,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:36,036 INFO L225 Difference]: With dead ends: 39363 [2022-11-20 12:42:36,036 INFO L226 Difference]: Without dead ends: 20294 [2022-11-20 12:42:36,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:42:36,141 INFO L413 NwaCegarLoop]: 3959 mSDtfsCounter, 3746 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3746 SdHoareTripleChecker+Valid, 4254 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:36,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3746 Valid, 4254 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:42:36,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20294 states. [2022-11-20 12:42:37,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20294 to 20231. [2022-11-20 12:42:37,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20231 states, 14278 states have (on average 1.4172152962599804) internal successors, (20235), 14652 states have internal predecessors, (20235), 5044 states have call successors, (5044), 890 states have call predecessors, (5044), 908 states have return successors, (5092), 4900 states have call predecessors, (5092), 5036 states have call successors, (5092) [2022-11-20 12:42:37,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20231 states to 20231 states and 30371 transitions. [2022-11-20 12:42:37,885 INFO L78 Accepts]: Start accepts. Automaton has 20231 states and 30371 transitions. Word has length 27 [2022-11-20 12:42:37,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:37,886 INFO L495 AbstractCegarLoop]: Abstraction has 20231 states and 30371 transitions. [2022-11-20 12:42:37,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:37,886 INFO L276 IsEmpty]: Start isEmpty. Operand 20231 states and 30371 transitions. [2022-11-20 12:42:37,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-20 12:42:37,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:37,891 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:37,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 12:42:37,891 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:37,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:37,892 INFO L85 PathProgramCache]: Analyzing trace with hash 404263285, now seen corresponding path program 1 times [2022-11-20 12:42:37,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:42:37,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117687299] [2022-11-20 12:42:37,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:37,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:42:38,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:38,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:38,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:42:38,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117687299] [2022-11-20 12:42:38,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117687299] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:38,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:38,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:42:38,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59136696] [2022-11-20 12:42:38,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:38,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:42:38,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:42:38,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:42:38,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:42:38,552 INFO L87 Difference]: Start difference. First operand 20231 states and 30371 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:39,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:39,958 INFO L93 Difference]: Finished difference Result 20233 states and 30372 transitions. [2022-11-20 12:42:39,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:42:39,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-20 12:42:39,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:40,085 INFO L225 Difference]: With dead ends: 20233 [2022-11-20 12:42:40,085 INFO L226 Difference]: Without dead ends: 20217 [2022-11-20 12:42:40,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:42:40,103 INFO L413 NwaCegarLoop]: 3889 mSDtfsCounter, 3864 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3864 SdHoareTripleChecker+Valid, 3889 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:40,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3864 Valid, 3889 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:42:40,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20217 states. [2022-11-20 12:42:42,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20217 to 20217. [2022-11-20 12:42:42,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20217 states, 14265 states have (on average 1.416403785488959) internal successors, (20205), 14638 states have internal predecessors, (20205), 5043 states have call successors, (5043), 890 states have call predecessors, (5043), 908 states have return successors, (5092), 4900 states have call predecessors, (5092), 5036 states have call successors, (5092) [2022-11-20 12:42:42,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20217 states to 20217 states and 30340 transitions. [2022-11-20 12:42:42,094 INFO L78 Accepts]: Start accepts. Automaton has 20217 states and 30340 transitions. Word has length 28 [2022-11-20 12:42:42,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:42,095 INFO L495 AbstractCegarLoop]: Abstraction has 20217 states and 30340 transitions. [2022-11-20 12:42:42,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:42,095 INFO L276 IsEmpty]: Start isEmpty. Operand 20217 states and 30340 transitions. [2022-11-20 12:42:42,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-20 12:42:42,117 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:42,118 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:42,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 12:42:42,118 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:42,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:42,119 INFO L85 PathProgramCache]: Analyzing trace with hash -36540386, now seen corresponding path program 1 times [2022-11-20 12:42:42,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:42:42,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036738379] [2022-11-20 12:42:42,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:42,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:42:42,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:42,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 12:42:42,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:42,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 12:42:42,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:42,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 12:42:42,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:42,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:42:42,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:42,909 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 12:42:42,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:42:42,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036738379] [2022-11-20 12:42:42,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036738379] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:42,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:42,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:42:42,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569414672] [2022-11-20 12:42:42,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:42,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:42:42,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:42:42,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:42:42,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:42:42,912 INFO L87 Difference]: Start difference. First operand 20217 states and 30340 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:42:47,167 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 [] [2022-11-20 12:42:49,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:43:01,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:43:16,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:43:18,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:43:23,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:43:23,975 INFO L93 Difference]: Finished difference Result 22676 states and 33511 transitions. [2022-11-20 12:43:23,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:43:23,980 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 64 [2022-11-20 12:43:23,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:43:24,059 INFO L225 Difference]: With dead ends: 22676 [2022-11-20 12:43:24,060 INFO L226 Difference]: Without dead ends: 20740 [2022-11-20 12:43:24,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:43:24,076 INFO L413 NwaCegarLoop]: 1643 mSDtfsCounter, 2457 mSDsluCounter, 3717 mSDsCounter, 0 mSdLazyCounter, 6615 mSolverCounterSat, 1298 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2846 SdHoareTripleChecker+Valid, 5360 SdHoareTripleChecker+Invalid, 7915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1298 IncrementalHoareTripleChecker+Valid, 6615 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:43:24,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2846 Valid, 5360 Invalid, 7915 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1298 Valid, 6615 Invalid, 2 Unknown, 0 Unchecked, 38.2s Time] [2022-11-20 12:43:24,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20740 states. [2022-11-20 12:43:25,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20740 to 20093. [2022-11-20 12:43:25,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20093 states, 14191 states have (on average 1.4174476781058418) internal successors, (20115), 14564 states have internal predecessors, (20115), 5023 states have call successors, (5023), 880 states have call predecessors, (5023), 878 states have return successors, (5020), 4860 states have call predecessors, (5020), 5020 states have call successors, (5020) [2022-11-20 12:43:26,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20093 states to 20093 states and 30158 transitions. [2022-11-20 12:43:26,032 INFO L78 Accepts]: Start accepts. Automaton has 20093 states and 30158 transitions. Word has length 64 [2022-11-20 12:43:26,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:43:26,032 INFO L495 AbstractCegarLoop]: Abstraction has 20093 states and 30158 transitions. [2022-11-20 12:43:26,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:43:26,033 INFO L276 IsEmpty]: Start isEmpty. Operand 20093 states and 30158 transitions. [2022-11-20 12:43:26,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-20 12:43:26,082 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:43:26,082 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:43:26,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 12:43:26,083 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:43:26,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:26,084 INFO L85 PathProgramCache]: Analyzing trace with hash -604591183, now seen corresponding path program 1 times [2022-11-20 12:43:26,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:43:26,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893484594] [2022-11-20 12:43:26,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:26,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:43:26,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:26,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 12:43:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:26,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:43:26,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:26,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 12:43:26,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:26,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:43:26,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:26,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 12:43:26,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:26,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 12:43:26,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:26,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 12:43:26,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:26,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-20 12:43:26,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:26,859 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 12:43:26,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:43:26,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893484594] [2022-11-20 12:43:26,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893484594] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:43:26,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:43:26,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:43:26,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873811199] [2022-11-20 12:43:26,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:43:26,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:43:26,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:43:26,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:43:26,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:43:26,864 INFO L87 Difference]: Start difference. First operand 20093 states and 30158 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 12:43:44,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:43:56,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:44:03,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:44:04,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:44:23,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:44:34,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:44:34,113 INFO L93 Difference]: Finished difference Result 61264 states and 91935 transitions. [2022-11-20 12:44:34,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:44:34,114 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 94 [2022-11-20 12:44:34,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:44:34,238 INFO L225 Difference]: With dead ends: 61264 [2022-11-20 12:44:34,238 INFO L226 Difference]: Without dead ends: 41174 [2022-11-20 12:44:34,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:44:34,331 INFO L413 NwaCegarLoop]: 2270 mSDtfsCounter, 5808 mSDsluCounter, 4519 mSDsCounter, 0 mSdLazyCounter, 9390 mSolverCounterSat, 3250 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6365 SdHoareTripleChecker+Valid, 6789 SdHoareTripleChecker+Invalid, 12641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3250 IncrementalHoareTripleChecker+Valid, 9390 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:44:34,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6365 Valid, 6789 Invalid, 12641 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3250 Valid, 9390 Invalid, 1 Unknown, 0 Unchecked, 63.2s Time] [2022-11-20 12:44:34,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41174 states. [2022-11-20 12:44:38,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41174 to 39935. [2022-11-20 12:44:38,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39935 states, 28227 states have (on average 1.417685195026039) internal successors, (40017), 28972 states have internal predecessors, (40017), 9961 states have call successors, (9961), 1748 states have call predecessors, (9961), 1746 states have return successors, (9958), 9638 states have call predecessors, (9958), 9958 states have call successors, (9958) [2022-11-20 12:44:38,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39935 states to 39935 states and 59936 transitions. [2022-11-20 12:44:38,224 INFO L78 Accepts]: Start accepts. Automaton has 39935 states and 59936 transitions. Word has length 94 [2022-11-20 12:44:38,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:44:38,225 INFO L495 AbstractCegarLoop]: Abstraction has 39935 states and 59936 transitions. [2022-11-20 12:44:38,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 12:44:38,225 INFO L276 IsEmpty]: Start isEmpty. Operand 39935 states and 59936 transitions. [2022-11-20 12:44:38,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-20 12:44:38,309 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:44:38,310 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:44:38,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 12:44:38,310 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:44:38,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:38,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1434017527, now seen corresponding path program 1 times [2022-11-20 12:44:38,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:44:38,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693106109] [2022-11-20 12:44:38,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:38,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:44:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:38,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 12:44:38,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:38,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 12:44:38,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:38,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-20 12:44:38,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:38,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 12:44:38,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:38,956 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 12:44:38,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:44:38,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693106109] [2022-11-20 12:44:38,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693106109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:44:38,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:44:38,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:44:38,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166884069] [2022-11-20 12:44:38,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:44:38,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:44:38,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:44:38,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:44:38,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:44:38,960 INFO L87 Difference]: Start difference. First operand 39935 states and 59936 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 12:44:52,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:45:14,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:45:14,398 INFO L93 Difference]: Finished difference Result 100034 states and 150141 transitions. [2022-11-20 12:45:14,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:45:14,399 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 98 [2022-11-20 12:45:14,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:45:14,619 INFO L225 Difference]: With dead ends: 100034 [2022-11-20 12:45:14,620 INFO L226 Difference]: Without dead ends: 60102 [2022-11-20 12:45:14,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:45:14,740 INFO L413 NwaCegarLoop]: 2749 mSDtfsCounter, 5529 mSDsluCounter, 3479 mSDsCounter, 0 mSdLazyCounter, 6003 mSolverCounterSat, 2069 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6149 SdHoareTripleChecker+Valid, 6228 SdHoareTripleChecker+Invalid, 8072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2069 IncrementalHoareTripleChecker+Valid, 6003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:45:14,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6149 Valid, 6228 Invalid, 8072 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2069 Valid, 6003 Invalid, 0 Unknown, 0 Unchecked, 29.9s Time] [2022-11-20 12:45:14,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60102 states. [2022-11-20 12:45:19,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60102 to 59871. [2022-11-20 12:45:19,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59871 states, 42343 states have (on average 1.4174479843185415) internal successors, (60019), 43460 states have internal predecessors, (60019), 14911 states have call successors, (14911), 2618 states have call predecessors, (14911), 2616 states have return successors, (14908), 14428 states have call predecessors, (14908), 14908 states have call successors, (14908) [2022-11-20 12:45:19,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59871 states to 59871 states and 89838 transitions. [2022-11-20 12:45:19,888 INFO L78 Accepts]: Start accepts. Automaton has 59871 states and 89838 transitions. Word has length 98 [2022-11-20 12:45:19,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:45:19,889 INFO L495 AbstractCegarLoop]: Abstraction has 59871 states and 89838 transitions. [2022-11-20 12:45:19,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 12:45:19,889 INFO L276 IsEmpty]: Start isEmpty. Operand 59871 states and 89838 transitions. [2022-11-20 12:45:19,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-20 12:45:19,946 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:45:19,946 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:45:19,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 12:45:19,947 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:45:19,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:45:19,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1669957042, now seen corresponding path program 1 times [2022-11-20 12:45:19,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:45:19,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961281965] [2022-11-20 12:45:19,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:45:19,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:45:20,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:45:21,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 12:45:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:45:21,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-20 12:45:21,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:45:21,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 12:45:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:45:21,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 12:45:21,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:45:21,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 12:45:21,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:45:21,308 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 12:45:21,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:45:21,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961281965] [2022-11-20 12:45:21,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961281965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:45:21,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:45:21,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:45:21,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194668958] [2022-11-20 12:45:21,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:45:21,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:45:21,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:45:21,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:45:21,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:45:21,311 INFO L87 Difference]: Start difference. First operand 59871 states and 89838 transitions. Second operand has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:45:27,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:45:28,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:45:36,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:45:46,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:45:48,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:45:52,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:45:54,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:45:55,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:46:10,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:46:13,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:46:24,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:46:41,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:46:41,288 INFO L93 Difference]: Finished difference Result 117007 states and 176861 transitions. [2022-11-20 12:46:41,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:46:41,289 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-11-20 12:46:41,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:46:41,499 INFO L225 Difference]: With dead ends: 117007 [2022-11-20 12:46:41,499 INFO L226 Difference]: Without dead ends: 57139 [2022-11-20 12:46:41,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-11-20 12:46:41,810 INFO L413 NwaCegarLoop]: 1580 mSDtfsCounter, 1874 mSDsluCounter, 8330 mSDsCounter, 0 mSdLazyCounter, 14317 mSolverCounterSat, 220 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 72.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2332 SdHoareTripleChecker+Valid, 9910 SdHoareTripleChecker+Invalid, 14538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 14317 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 74.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:46:41,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2332 Valid, 9910 Invalid, 14538 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [220 Valid, 14317 Invalid, 1 Unknown, 0 Unchecked, 74.5s Time] [2022-11-20 12:46:41,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57139 states. [2022-11-20 12:46:46,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57139 to 56915. [2022-11-20 12:46:46,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56915 states, 40685 states have (on average 1.4220720167137766) internal successors, (57857), 41465 states have internal predecessors, (57857), 14093 states have call successors, (14093), 2137 states have call predecessors, (14093), 2136 states have return successors, (14092), 13924 states have call predecessors, (14092), 14092 states have call successors, (14092) [2022-11-20 12:46:46,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56915 states to 56915 states and 86042 transitions. [2022-11-20 12:46:46,917 INFO L78 Accepts]: Start accepts. Automaton has 56915 states and 86042 transitions. Word has length 101 [2022-11-20 12:46:46,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:46:46,918 INFO L495 AbstractCegarLoop]: Abstraction has 56915 states and 86042 transitions. [2022-11-20 12:46:46,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:46:46,918 INFO L276 IsEmpty]: Start isEmpty. Operand 56915 states and 86042 transitions. [2022-11-20 12:46:47,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-11-20 12:46:47,034 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:46:47,034 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:46:47,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 12:46:47,035 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:46:47,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:46:47,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1745805728, now seen corresponding path program 1 times [2022-11-20 12:46:47,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:46:47,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966272487] [2022-11-20 12:46:47,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:46:47,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:46:47,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:47,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 12:46:47,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:47,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:46:47,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:47,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 12:46:47,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:47,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 12:46:47,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:47,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 12:46:47,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:47,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:46:47,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:47,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:46:47,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:47,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:46:47,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:47,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:46:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:47,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 12:46:47,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:47,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:46:47,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:47,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:46:47,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:47,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:46:47,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:47,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 12:46:47,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:47,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:46:47,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:47,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:46:47,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:47,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:46:47,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:47,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-20 12:46:47,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:47,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:46:47,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:47,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:46:47,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:47,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:46:47,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:47,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-20 12:46:47,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:48,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:46:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:48,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:46:48,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:48,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-20 12:46:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:48,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:46:48,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:48,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:46:48,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:48,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-11-20 12:46:48,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:46:48,109 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2022-11-20 12:46:48,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:46:48,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966272487] [2022-11-20 12:46:48,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966272487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:46:48,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:46:48,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:46:48,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501831025] [2022-11-20 12:46:48,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:46:48,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:46:48,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:46:48,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:46:48,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:46:48,115 INFO L87 Difference]: Start difference. First operand 56915 states and 86042 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 12:47:01,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:47:01,961 INFO L93 Difference]: Finished difference Result 149279 states and 223505 transitions. [2022-11-20 12:47:01,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:47:01,962 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 192 [2022-11-20 12:47:01,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted.