./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--char--ipmi--ipmi_msghandler.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_75d9c7dc-4ef4-4229-b296-79961f65de3d/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d9c7dc-4ef4-4229-b296-79961f65de3d/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d9c7dc-4ef4-4229-b296-79961f65de3d/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d9c7dc-4ef4-4229-b296-79961f65de3d/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--char--ipmi--ipmi_msghandler.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d9c7dc-4ef4-4229-b296-79961f65de3d/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d9c7dc-4ef4-4229-b296-79961f65de3d/bin/uautomizer-vX5HgA9Q3a --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 19525e6f83ed492183d9a21eaa90e9685989ff90c55473d8827091d7561f2601 --- 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-b5237d8 [2022-11-21 16:54:05,950 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:54:05,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:54:05,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:54:05,988 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:54:05,992 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:54:05,994 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:54:06,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:54:06,001 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:54:06,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:54:06,008 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:54:06,009 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:54:06,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:54:06,013 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:54:06,014 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:54:06,017 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:54:06,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:54:06,019 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:54:06,021 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:54:06,027 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:54:06,029 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:54:06,030 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:54:06,031 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:54:06,033 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:54:06,039 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:54:06,042 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:54:06,042 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:54:06,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:54:06,045 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:54:06,046 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:54:06,047 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:54:06,048 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:54:06,050 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:54:06,052 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:54:06,054 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:54:06,054 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:54:06,055 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:54:06,055 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:54:06,055 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:54:06,057 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:54:06,058 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:54:06,059 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d9c7dc-4ef4-4229-b296-79961f65de3d/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-21 16:54:06,091 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:54:06,092 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:54:06,092 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:54:06,093 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:54:06,093 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:54:06,094 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:54:06,094 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:54:06,095 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:54:06,095 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:54:06,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:54:06,096 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:54:06,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:54:06,097 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:54:06,097 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:54:06,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:54:06,097 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:54:06,097 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:54:06,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:54:06,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:54:06,098 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:54:06,098 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:54:06,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:54:06,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:54:06,099 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:54:06,099 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:54:06,099 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:54:06,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:54:06,100 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:54:06,100 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:54:06,101 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:54:06,101 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_75d9c7dc-4ef4-4229-b296-79961f65de3d/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d9c7dc-4ef4-4229-b296-79961f65de3d/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19525e6f83ed492183d9a21eaa90e9685989ff90c55473d8827091d7561f2601 [2022-11-21 16:54:06,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:54:06,440 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:54:06,443 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:54:06,445 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:54:06,446 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:54:06,447 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d9c7dc-4ef4-4229-b296-79961f65de3d/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--char--ipmi--ipmi_msghandler.ko-main.cil.out.i [2022-11-21 16:54:09,446 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:54:10,074 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:54:10,075 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d9c7dc-4ef4-4229-b296-79961f65de3d/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--char--ipmi--ipmi_msghandler.ko-main.cil.out.i [2022-11-21 16:54:10,134 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d9c7dc-4ef4-4229-b296-79961f65de3d/bin/uautomizer-vX5HgA9Q3a/data/db10db971/4a4e9d5edc0c43bf9e491aa241defcef/FLAGd71d2d868 [2022-11-21 16:54:10,154 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d9c7dc-4ef4-4229-b296-79961f65de3d/bin/uautomizer-vX5HgA9Q3a/data/db10db971/4a4e9d5edc0c43bf9e491aa241defcef [2022-11-21 16:54:10,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:54:10,162 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:54:10,166 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:54:10,167 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:54:10,170 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:54:10,171 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:54:10" (1/1) ... [2022-11-21 16:54:10,172 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@730eaee4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:54:10, skipping insertion in model container [2022-11-21 16:54:10,172 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:54:10" (1/1) ... [2022-11-21 16:54:10,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:54:10,323 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:54:12,738 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_75d9c7dc-4ef4-4229-b296-79961f65de3d/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--char--ipmi--ipmi_msghandler.ko-main.cil.out.i[265597,265610] [2022-11-21 16:54:12,956 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:54:13,006 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:54:13,480 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_75d9c7dc-4ef4-4229-b296-79961f65de3d/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--char--ipmi--ipmi_msghandler.ko-main.cil.out.i[265597,265610] [2022-11-21 16:54:13,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:54:13,647 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:54:13,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:54:13 WrapperNode [2022-11-21 16:54:13,650 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:54:13,652 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:54:13,652 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:54:13,653 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:54:13,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:54:13" (1/1) ... [2022-11-21 16:54:13,785 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:54:13" (1/1) ... [2022-11-21 16:54:13,891 INFO L138 Inliner]: procedures = 389, calls = 2887, calls flagged for inlining = 156, calls inlined = 64, statements flattened = 3287 [2022-11-21 16:54:13,891 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:54:13,892 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:54:13,892 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:54:13,892 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:54:13,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:54:13" (1/1) ... [2022-11-21 16:54:13,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:54:13" (1/1) ... [2022-11-21 16:54:13,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:54:13" (1/1) ... [2022-11-21 16:54:13,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:54:13" (1/1) ... [2022-11-21 16:54:14,069 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:54:13" (1/1) ... [2022-11-21 16:54:14,094 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:54:13" (1/1) ... [2022-11-21 16:54:14,121 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:54:13" (1/1) ... [2022-11-21 16:54:14,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:54:13" (1/1) ... [2022-11-21 16:54:14,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:54:14,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:54:14,174 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:54:14,174 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:54:14,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:54:13" (1/1) ... [2022-11-21 16:54:14,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:54:14,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d9c7dc-4ef4-4229-b296-79961f65de3d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:54:14,207 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d9c7dc-4ef4-4229-b296-79961f65de3d/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:54:14,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75d9c7dc-4ef4-4229-b296-79961f65de3d/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:54:14,252 INFO L130 BoogieDeclarations]: Found specification of procedure smi_stats_proc_open [2022-11-21 16:54:14,252 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_stats_proc_open [2022-11-21 16:54:14,252 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-21 16:54:14,252 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-21 16:54:14,252 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-21 16:54:14,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-21 16:54:14,253 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_poll [2022-11-21 16:54:14,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_poll [2022-11-21 16:54:14,253 INFO L130 BoogieDeclarations]: Found specification of procedure format_lan_msg [2022-11-21 16:54:14,253 INFO L138 BoogieDeclarations]: Found implementation of procedure format_lan_msg [2022-11-21 16:54:14,253 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-21 16:54:14,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-21 16:54:14,253 INFO L130 BoogieDeclarations]: Found specification of procedure copy_event_into_recv_msg [2022-11-21 16:54:14,253 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_event_into_recv_msg [2022-11-21 16:54:14,254 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_panic_request_and_wait [2022-11-21 16:54:14,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_panic_request_and_wait [2022-11-21 16:54:14,254 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-21 16:54:14,254 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-21 16:54:14,254 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_cmd_rcvrs_mutex_of_ipmi_smi [2022-11-21 16:54:14,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_cmd_rcvrs_mutex_of_ipmi_smi [2022-11-21 16:54:14,254 INFO L130 BoogieDeclarations]: Found specification of procedure remove_proc_entry [2022-11-21 16:54:14,254 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_proc_entry [2022-11-21 16:54:14,255 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_unregister [2022-11-21 16:54:14,255 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_unregister [2022-11-21 16:54:14,255 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-21 16:54:14,255 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-21 16:54:14,255 INFO L130 BoogieDeclarations]: Found specification of procedure intf_next_seq [2022-11-21 16:54:14,255 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_next_seq [2022-11-21 16:54:14,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:54:14,255 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_cmd_rcvrs_mutex_of_ipmi_smi [2022-11-21 16:54:14,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_cmd_rcvrs_mutex_of_ipmi_smi [2022-11-21 16:54:14,256 INFO L130 BoogieDeclarations]: Found specification of procedure PDE [2022-11-21 16:54:14,256 INFO L138 BoogieDeclarations]: Found implementation of procedure PDE [2022-11-21 16:54:14,256 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-21 16:54:14,257 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-21 16:54:14,257 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-21 16:54:14,257 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-21 16:54:14,258 INFO L130 BoogieDeclarations]: Found specification of procedure i_ipmi_request [2022-11-21 16:54:14,258 INFO L138 BoogieDeclarations]: Found implementation of procedure i_ipmi_request [2022-11-21 16:54:14,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-21 16:54:14,258 INFO L130 BoogieDeclarations]: Found specification of procedure free_smi_msg_list [2022-11-21 16:54:14,259 INFO L138 BoogieDeclarations]: Found implementation of procedure free_smi_msg_list [2022-11-21 16:54:14,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-21 16:54:14,259 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2022-11-21 16:54:14,259 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2022-11-21 16:54:14,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 16:54:14,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-21 16:54:14,260 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-21 16:54:14,260 INFO L130 BoogieDeclarations]: Found specification of procedure maintenance_mode_update [2022-11-21 16:54:14,260 INFO L138 BoogieDeclarations]: Found implementation of procedure maintenance_mode_update [2022-11-21 16:54:14,260 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-21 16:54:14,260 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-21 16:54:14,260 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-11-21 16:54:14,260 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-11-21 16:54:14,261 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock [2022-11-21 16:54:14,261 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock [2022-11-21 16:54:14,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 16:54:14,261 INFO L130 BoogieDeclarations]: Found specification of procedure smi_version_proc_open [2022-11-21 16:54:14,262 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_version_proc_open [2022-11-21 16:54:14,262 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-11-21 16:54:14,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-11-21 16:54:14,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:54:14,262 INFO L130 BoogieDeclarations]: Found specification of procedure send_channel_info_cmd [2022-11-21 16:54:14,263 INFO L138 BoogieDeclarations]: Found implementation of procedure send_channel_info_cmd [2022-11-21 16:54:14,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-21 16:54:14,263 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-21 16:54:14,263 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-21 16:54:14,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-21 16:54:14,263 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_alloc_smi_msg [2022-11-21 16:54:14,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_alloc_smi_msg [2022-11-21 16:54:14,263 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-21 16:54:14,263 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-21 16:54:14,264 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-11-21 16:54:14,264 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-11-21 16:54:14,264 INFO L130 BoogieDeclarations]: Found specification of procedure handle_new_recv_msgs [2022-11-21 16:54:14,265 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_new_recv_msgs [2022-11-21 16:54:14,265 INFO L130 BoogieDeclarations]: Found specification of procedure is_lan_addr [2022-11-21 16:54:14,265 INFO L138 BoogieDeclarations]: Found implementation of procedure is_lan_addr [2022-11-21 16:54:14,265 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-21 16:54:14,265 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-21 16:54:14,265 INFO L130 BoogieDeclarations]: Found specification of procedure intf_free [2022-11-21 16:54:14,266 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_free [2022-11-21 16:54:14,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:54:14,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:54:14,266 INFO L130 BoogieDeclarations]: Found specification of procedure __cmpxchg_wrong_size [2022-11-21 16:54:14,267 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-11-21 16:54:14,267 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-11-21 16:54:14,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-21 16:54:14,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-21 16:54:14,268 INFO L130 BoogieDeclarations]: Found specification of procedure intf_find_seq [2022-11-21 16:54:14,268 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_find_seq [2022-11-21 16:54:14,268 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-21 16:54:14,268 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-21 16:54:14,268 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-21 16:54:14,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-21 16:54:14,268 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-21 16:54:14,269 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-21 16:54:14,269 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_free_smi_msg [2022-11-21 16:54:14,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_free_smi_msg [2022-11-21 16:54:14,269 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-21 16:54:14,271 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-21 16:54:14,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:54:14,271 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-21 16:54:14,271 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-21 16:54:14,271 INFO L130 BoogieDeclarations]: Found specification of procedure proc_mkdir [2022-11-21 16:54:14,271 INFO L138 BoogieDeclarations]: Found implementation of procedure proc_mkdir [2022-11-21 16:54:14,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-21 16:54:14,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-21 16:54:14,272 INFO L130 BoogieDeclarations]: Found specification of procedure find_cmd_rcvr [2022-11-21 16:54:14,272 INFO L138 BoogieDeclarations]: Found implementation of procedure find_cmd_rcvr [2022-11-21 16:54:14,272 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-21 16:54:14,272 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-21 16:54:14,272 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_init_msghandler [2022-11-21 16:54:14,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_init_msghandler [2022-11-21 16:54:14,272 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-21 16:54:14,273 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-21 16:54:14,273 INFO L130 BoogieDeclarations]: Found specification of procedure clean_up_interface_data [2022-11-21 16:54:14,273 INFO L138 BoogieDeclarations]: Found implementation of procedure clean_up_interface_data [2022-11-21 16:54:14,274 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_alloc_recv_msg [2022-11-21 16:54:14,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_alloc_recv_msg [2022-11-21 16:54:14,277 INFO L130 BoogieDeclarations]: Found specification of procedure single_open [2022-11-21 16:54:14,277 INFO L138 BoogieDeclarations]: Found implementation of procedure single_open [2022-11-21 16:54:14,277 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2022-11-21 16:54:14,278 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2022-11-21 16:54:14,279 INFO L130 BoogieDeclarations]: Found specification of procedure synchronize_rcu [2022-11-21 16:54:14,280 INFO L138 BoogieDeclarations]: Found implementation of procedure synchronize_rcu [2022-11-21 16:54:14,280 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2022-11-21 16:54:14,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2022-11-21 16:54:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure smi_ipmb_proc_open [2022-11-21 16:54:14,286 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_ipmb_proc_open [2022-11-21 16:54:14,286 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-21 16:54:14,286 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-21 16:54:14,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 16:54:14,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-21 16:54:14,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-21 16:54:14,286 INFO L130 BoogieDeclarations]: Found specification of procedure is_ipmb_addr [2022-11-21 16:54:14,286 INFO L138 BoogieDeclarations]: Found implementation of procedure is_ipmb_addr [2022-11-21 16:54:14,286 INFO L130 BoogieDeclarations]: Found specification of procedure is_ipmb_bcast_addr [2022-11-21 16:54:14,287 INFO L138 BoogieDeclarations]: Found implementation of procedure is_ipmb_bcast_addr [2022-11-21 16:54:14,287 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_cpu_idle [2022-11-21 16:54:14,287 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_cpu_idle [2022-11-21 16:54:14,287 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-11-21 16:54:14,287 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-11-21 16:54:14,287 INFO L130 BoogieDeclarations]: Found specification of procedure format_ipmb_msg [2022-11-21 16:54:14,287 INFO L138 BoogieDeclarations]: Found implementation of procedure format_ipmb_msg [2022-11-21 16:54:14,287 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2022-11-21 16:54:14,287 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2022-11-21 16:54:14,288 INFO L130 BoogieDeclarations]: Found specification of procedure free_recv_msg_list [2022-11-21 16:54:14,288 INFO L138 BoogieDeclarations]: Found implementation of procedure free_recv_msg_list [2022-11-21 16:54:14,288 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2022-11-21 16:54:14,288 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2022-11-21 16:54:14,288 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-11-21 16:54:14,288 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-11-21 16:54:14,288 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-21 16:54:14,288 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-21 16:54:14,288 INFO L130 BoogieDeclarations]: Found specification of procedure ipmb_checksum [2022-11-21 16:54:14,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmb_checksum [2022-11-21 16:54:14,289 INFO L130 BoogieDeclarations]: Found specification of procedure deliver_response [2022-11-21 16:54:14,289 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver_response [2022-11-21 16:54:14,289 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock [2022-11-21 16:54:14,289 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock [2022-11-21 16:54:14,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:54:14,289 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_free_recv_msg [2022-11-21 16:54:14,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_free_recv_msg [2022-11-21 16:54:14,289 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-11-21 16:54:14,289 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2022-11-21 16:54:14,289 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2022-11-21 16:54:15,046 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:54:15,049 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:54:24,575 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:54:24,588 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:54:24,589 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-21 16:54:24,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:54:24 BoogieIcfgContainer [2022-11-21 16:54:24,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:54:24,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:54:24,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:54:24,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:54:24,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:54:10" (1/3) ... [2022-11-21 16:54:24,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a1d9aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:54:24, skipping insertion in model container [2022-11-21 16:54:24,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:54:13" (2/3) ... [2022-11-21 16:54:24,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a1d9aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:54:24, skipping insertion in model container [2022-11-21 16:54:24,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:54:24" (3/3) ... [2022-11-21 16:54:24,601 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--char--ipmi--ipmi_msghandler.ko-main.cil.out.i [2022-11-21 16:54:24,620 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:54:24,620 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 16:54:24,695 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:54:24,702 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;@601f3d93, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:54:24,702 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 16:54:24,714 INFO L276 IsEmpty]: Start isEmpty. Operand has 1239 states, 859 states have (on average 1.369033760186263) internal successors, (1176), 909 states have internal predecessors, (1176), 304 states have call successors, (304), 74 states have call predecessors, (304), 74 states have return successors, (304), 298 states have call predecessors, (304), 304 states have call successors, (304) [2022-11-21 16:54:24,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-21 16:54:24,724 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:54:24,725 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:54:24,725 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:54:24,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:54:24,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1393245404, now seen corresponding path program 1 times [2022-11-21 16:54:24,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:54:24,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296653423] [2022-11-21 16:54:24,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:54:24,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:54:25,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:54:25,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:54:25,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:54:25,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296653423] [2022-11-21 16:54:25,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296653423] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:54:25,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:54:25,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:54:25,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899408408] [2022-11-21 16:54:25,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:54:25,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:54:25,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:54:25,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:54:25,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:54:25,451 INFO L87 Difference]: Start difference. First operand has 1239 states, 859 states have (on average 1.369033760186263) internal successors, (1176), 909 states have internal predecessors, (1176), 304 states have call successors, (304), 74 states have call predecessors, (304), 74 states have return successors, (304), 298 states have call predecessors, (304), 304 states have call successors, (304) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:26,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:54:26,032 INFO L93 Difference]: Finished difference Result 3642 states and 5361 transitions. [2022-11-21 16:54:26,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:54:26,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-21 16:54:26,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:54:26,073 INFO L225 Difference]: With dead ends: 3642 [2022-11-21 16:54:26,074 INFO L226 Difference]: Without dead ends: 2402 [2022-11-21 16:54:26,089 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 [2022-11-21 16:54:26,093 INFO L413 NwaCegarLoop]: 2836 mSDtfsCounter, 1705 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1705 SdHoareTripleChecker+Valid, 4566 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:54:26,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1705 Valid, 4566 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:54:26,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2402 states. [2022-11-21 16:54:26,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2402 to 2398. [2022-11-21 16:54:26,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 1665 states have (on average 1.3663663663663663) internal successors, (2275), 1752 states have internal predecessors, (2275), 590 states have call successors, (590), 143 states have call predecessors, (590), 142 states have return successors, (580), 568 states have call predecessors, (580), 580 states have call successors, (580) [2022-11-21 16:54:26,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 3445 transitions. [2022-11-21 16:54:26,372 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 3445 transitions. Word has length 16 [2022-11-21 16:54:26,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:54:26,373 INFO L495 AbstractCegarLoop]: Abstraction has 2398 states and 3445 transitions. [2022-11-21 16:54:26,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:26,374 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 3445 transitions. [2022-11-21 16:54:26,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-21 16:54:26,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:54:26,380 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] [2022-11-21 16:54:26,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:54:26,380 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:54:26,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:54:26,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1854504654, now seen corresponding path program 1 times [2022-11-21 16:54:26,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:54:26,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980025074] [2022-11-21 16:54:26,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:54:26,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:54:26,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:54:26,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 16:54:26,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:54:26,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:54:26,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:54:26,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980025074] [2022-11-21 16:54:26,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980025074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:54:26,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:54:26,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:54:26,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625220786] [2022-11-21 16:54:26,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:54:26,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:54:26,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:54:26,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:54:26,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:54:26,858 INFO L87 Difference]: Start difference. First operand 2398 states and 3445 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-21 16:54:49,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:54:51,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:54:52,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:54:54,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:54:55,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:54:56,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:55:00,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:55:02,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:55:04,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:55:08,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:55:09,390 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 [] [2022-11-21 16:55:10,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:55:10,500 INFO L93 Difference]: Finished difference Result 7443 states and 10852 transitions. [2022-11-21 16:55:10,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 16:55:10,500 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-11-21 16:55:10,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:55:10,529 INFO L225 Difference]: With dead ends: 7443 [2022-11-21 16:55:10,529 INFO L226 Difference]: Without dead ends: 5048 [2022-11-21 16:55:10,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:55:10,541 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 2646 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 8339 mSolverCounterSat, 1418 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2972 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 9761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1418 IncrementalHoareTripleChecker+Valid, 8339 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.9s IncrementalHoareTripleChecker+Time [2022-11-21 16:55:10,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2972 Valid, 1187 Invalid, 9761 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1418 Valid, 8339 Invalid, 4 Unknown, 0 Unchecked, 42.9s Time] [2022-11-21 16:55:10,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5048 states. [2022-11-21 16:55:10,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5048 to 4740. [2022-11-21 16:55:10,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4740 states, 3294 states have (on average 1.3664238008500305) internal successors, (4501), 3460 states have internal predecessors, (4501), 1163 states have call successors, (1163), 282 states have call predecessors, (1163), 282 states have return successors, (1156), 1129 states have call predecessors, (1156), 1153 states have call successors, (1156) [2022-11-21 16:55:10,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4740 states to 4740 states and 6820 transitions. [2022-11-21 16:55:10,908 INFO L78 Accepts]: Start accepts. Automaton has 4740 states and 6820 transitions. Word has length 23 [2022-11-21 16:55:10,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:55:10,908 INFO L495 AbstractCegarLoop]: Abstraction has 4740 states and 6820 transitions. [2022-11-21 16:55:10,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-21 16:55:10,909 INFO L276 IsEmpty]: Start isEmpty. Operand 4740 states and 6820 transitions. [2022-11-21 16:55:10,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-21 16:55:10,913 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:55:10,914 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] [2022-11-21 16:55:10,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:55:10,914 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:55:10,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:55:10,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1690190994, now seen corresponding path program 1 times [2022-11-21 16:55:10,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:55:10,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434880209] [2022-11-21 16:55:10,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:55:10,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:55:11,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:11,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 16:55:11,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:11,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:55:11,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:55:11,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434880209] [2022-11-21 16:55:11,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434880209] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:55:11,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:55:11,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:55:11,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313210468] [2022-11-21 16:55:11,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:55:11,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:55:11,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:55:11,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:55:11,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:55:11,242 INFO L87 Difference]: Start difference. First operand 4740 states and 6820 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-21 16:55:21,607 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 [] [2022-11-21 16:55:23,621 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 [] [2022-11-21 16:55:23,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:55:23,889 INFO L93 Difference]: Finished difference Result 8528 states and 12380 transitions. [2022-11-21 16:55:23,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:55:23,890 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2022-11-21 16:55:23,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:55:23,914 INFO L225 Difference]: With dead ends: 8528 [2022-11-21 16:55:23,914 INFO L226 Difference]: Without dead ends: 3791 [2022-11-21 16:55:23,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:55:23,937 INFO L413 NwaCegarLoop]: 1405 mSDtfsCounter, 2155 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 2273 mSolverCounterSat, 577 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2332 SdHoareTripleChecker+Valid, 2746 SdHoareTripleChecker+Invalid, 2852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 577 IncrementalHoareTripleChecker+Valid, 2273 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:55:23,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2332 Valid, 2746 Invalid, 2852 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [577 Valid, 2273 Invalid, 2 Unknown, 0 Unchecked, 12.2s Time] [2022-11-21 16:55:23,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3791 states. [2022-11-21 16:55:24,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3791 to 3575. [2022-11-21 16:55:24,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3575 states, 2484 states have (on average 1.3651368760064413) internal successors, (3391), 2611 states have internal predecessors, (3391), 877 states have call successors, (877), 213 states have call predecessors, (877), 213 states have return successors, (870), 849 states have call predecessors, (870), 867 states have call successors, (870) [2022-11-21 16:55:24,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3575 states to 3575 states and 5138 transitions. [2022-11-21 16:55:24,249 INFO L78 Accepts]: Start accepts. Automaton has 3575 states and 5138 transitions. Word has length 25 [2022-11-21 16:55:24,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:55:24,251 INFO L495 AbstractCegarLoop]: Abstraction has 3575 states and 5138 transitions. [2022-11-21 16:55:24,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-21 16:55:24,251 INFO L276 IsEmpty]: Start isEmpty. Operand 3575 states and 5138 transitions. [2022-11-21 16:55:24,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-21 16:55:24,254 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:55:24,254 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] [2022-11-21 16:55:24,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 16:55:24,256 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:55:24,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:55:24,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1136355247, now seen corresponding path program 1 times [2022-11-21 16:55:24,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:55:24,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314289104] [2022-11-21 16:55:24,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:55:24,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:55:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:24,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 16:55:24,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:24,551 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-21 16:55:24,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:55:24,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314289104] [2022-11-21 16:55:24,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314289104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:55:24,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:55:24,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:55:24,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202809106] [2022-11-21 16:55:24,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:55:24,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:55:24,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:55:24,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:55:24,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:55:24,555 INFO L87 Difference]: Start difference. First operand 3575 states and 5138 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-21 16:55:30,710 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 [] [2022-11-21 16:55:33,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:55:36,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:55:36,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:55:36,698 INFO L93 Difference]: Finished difference Result 3813 states and 5573 transitions. [2022-11-21 16:55:36,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:55:36,698 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2022-11-21 16:55:36,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:55:36,720 INFO L225 Difference]: With dead ends: 3813 [2022-11-21 16:55:36,720 INFO L226 Difference]: Without dead ends: 3809 [2022-11-21 16:55:36,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:55:36,724 INFO L413 NwaCegarLoop]: 1247 mSDtfsCounter, 1892 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 1485 mSolverCounterSat, 528 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2053 SdHoareTripleChecker+Valid, 1445 SdHoareTripleChecker+Invalid, 2015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 528 IncrementalHoareTripleChecker+Valid, 1485 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2022-11-21 16:55:36,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2053 Valid, 1445 Invalid, 2015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [528 Valid, 1485 Invalid, 2 Unknown, 0 Unchecked, 11.8s Time] [2022-11-21 16:55:36,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3809 states. [2022-11-21 16:55:36,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3809 to 3591. [2022-11-21 16:55:36,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3591 states, 2496 states have (on average 1.3617788461538463) internal successors, (3399), 2621 states have internal predecessors, (3399), 875 states have call successors, (875), 219 states have call predecessors, (875), 219 states have return successors, (870), 849 states have call predecessors, (870), 867 states have call successors, (870) [2022-11-21 16:55:36,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3591 states to 3591 states and 5144 transitions. [2022-11-21 16:55:36,997 INFO L78 Accepts]: Start accepts. Automaton has 3591 states and 5144 transitions. Word has length 35 [2022-11-21 16:55:36,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:55:36,997 INFO L495 AbstractCegarLoop]: Abstraction has 3591 states and 5144 transitions. [2022-11-21 16:55:36,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-21 16:55:36,998 INFO L276 IsEmpty]: Start isEmpty. Operand 3591 states and 5144 transitions. [2022-11-21 16:55:37,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-21 16:55:37,000 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:55:37,000 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] [2022-11-21 16:55:37,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 16:55:37,001 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:55:37,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:55:37,003 INFO L85 PathProgramCache]: Analyzing trace with hash -867928403, now seen corresponding path program 1 times [2022-11-21 16:55:37,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:55:37,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365530589] [2022-11-21 16:55:37,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:55:37,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:55:37,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:37,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 16:55:37,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:37,233 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-21 16:55:37,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:55:37,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365530589] [2022-11-21 16:55:37,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365530589] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:55:37,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:55:37,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:55:37,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850825535] [2022-11-21 16:55:37,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:55:37,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:55:37,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:55:37,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:55:37,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:55:37,236 INFO L87 Difference]: Start difference. First operand 3591 states and 5144 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-21 16:55:45,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:55:47,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:55:47,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:55:47,470 INFO L93 Difference]: Finished difference Result 3809 states and 5566 transitions. [2022-11-21 16:55:47,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:55:47,470 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2022-11-21 16:55:47,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:55:47,492 INFO L225 Difference]: With dead ends: 3809 [2022-11-21 16:55:47,492 INFO L226 Difference]: Without dead ends: 3806 [2022-11-21 16:55:47,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:55:47,495 INFO L413 NwaCegarLoop]: 1241 mSDtfsCounter, 1914 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 509 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2098 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 1980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 509 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-11-21 16:55:47,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2098 Valid, 1419 Invalid, 1980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [509 Valid, 1470 Invalid, 1 Unknown, 0 Unchecked, 9.9s Time] [2022-11-21 16:55:47,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3806 states. [2022-11-21 16:55:47,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3806 to 3590. [2022-11-21 16:55:47,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3590 states, 2496 states have (on average 1.361378205128205) internal successors, (3398), 2620 states have internal predecessors, (3398), 874 states have call successors, (874), 219 states have call predecessors, (874), 219 states have return successors, (870), 849 states have call predecessors, (870), 867 states have call successors, (870) [2022-11-21 16:55:47,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3590 states to 3590 states and 5142 transitions. [2022-11-21 16:55:47,816 INFO L78 Accepts]: Start accepts. Automaton has 3590 states and 5142 transitions. Word has length 36 [2022-11-21 16:55:47,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:55:47,817 INFO L495 AbstractCegarLoop]: Abstraction has 3590 states and 5142 transitions. [2022-11-21 16:55:47,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-21 16:55:47,818 INFO L276 IsEmpty]: Start isEmpty. Operand 3590 states and 5142 transitions. [2022-11-21 16:55:47,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-21 16:55:47,821 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:55:47,825 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] [2022-11-21 16:55:47,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 16:55:47,826 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:55:47,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:55:47,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1136625964, now seen corresponding path program 1 times [2022-11-21 16:55:47,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:55:47,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019985783] [2022-11-21 16:55:47,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:55:47,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:55:47,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:47,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 16:55:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:48,015 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-21 16:55:48,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:55:48,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019985783] [2022-11-21 16:55:48,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019985783] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:55:48,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:55:48,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:55:48,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270888393] [2022-11-21 16:55:48,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:55:48,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:55:48,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:55:48,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:55:48,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:55:48,017 INFO L87 Difference]: Start difference. First operand 3590 states and 5142 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-21 16:55:56,163 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 [] [2022-11-21 16:55:57,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:55:57,833 INFO L93 Difference]: Finished difference Result 3808 states and 5564 transitions. [2022-11-21 16:55:57,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:55:57,834 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2022-11-21 16:55:57,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:55:57,854 INFO L225 Difference]: With dead ends: 3808 [2022-11-21 16:55:57,855 INFO L226 Difference]: Without dead ends: 3805 [2022-11-21 16:55:57,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:55:57,858 INFO L413 NwaCegarLoop]: 1240 mSDtfsCounter, 1912 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 1472 mSolverCounterSat, 508 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2094 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 1981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 508 IncrementalHoareTripleChecker+Valid, 1472 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-11-21 16:55:57,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2094 Valid, 1417 Invalid, 1981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [508 Valid, 1472 Invalid, 1 Unknown, 0 Unchecked, 9.5s Time] [2022-11-21 16:55:57,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3805 states. [2022-11-21 16:55:58,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3805 to 3589. [2022-11-21 16:55:58,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3589 states, 2496 states have (on average 1.360977564102564) internal successors, (3397), 2619 states have internal predecessors, (3397), 873 states have call successors, (873), 219 states have call predecessors, (873), 219 states have return successors, (870), 849 states have call predecessors, (870), 867 states have call successors, (870) [2022-11-21 16:55:58,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3589 states to 3589 states and 5140 transitions. [2022-11-21 16:55:58,178 INFO L78 Accepts]: Start accepts. Automaton has 3589 states and 5140 transitions. Word has length 37 [2022-11-21 16:55:58,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:55:58,179 INFO L495 AbstractCegarLoop]: Abstraction has 3589 states and 5140 transitions. [2022-11-21 16:55:58,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-21 16:55:58,179 INFO L276 IsEmpty]: Start isEmpty. Operand 3589 states and 5140 transitions. [2022-11-21 16:55:58,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-21 16:55:58,180 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:55:58,181 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] [2022-11-21 16:55:58,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 16:55:58,181 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:55:58,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:55:58,182 INFO L85 PathProgramCache]: Analyzing trace with hash -876310896, now seen corresponding path program 1 times [2022-11-21 16:55:58,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:55:58,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469356793] [2022-11-21 16:55:58,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:55:58,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:55:58,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:58,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 16:55:58,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:55:58,366 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-21 16:55:58,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:55:58,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469356793] [2022-11-21 16:55:58,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469356793] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:55:58,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:55:58,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:55:58,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981382954] [2022-11-21 16:55:58,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:55:58,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:55:58,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:55:58,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:55:58,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:55:58,369 INFO L87 Difference]: Start difference. First operand 3589 states and 5140 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-21 16:56:06,367 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 [] [2022-11-21 16:56:07,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:56:08,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:56:08,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:56:08,790 INFO L93 Difference]: Finished difference Result 3807 states and 5562 transitions. [2022-11-21 16:56:08,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:56:08,791 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2022-11-21 16:56:08,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:56:08,810 INFO L225 Difference]: With dead ends: 3807 [2022-11-21 16:56:08,811 INFO L226 Difference]: Without dead ends: 3804 [2022-11-21 16:56:08,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:56:08,813 INFO L413 NwaCegarLoop]: 1238 mSDtfsCounter, 1908 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 1471 mSolverCounterSat, 507 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2091 SdHoareTripleChecker+Valid, 1414 SdHoareTripleChecker+Invalid, 1979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 507 IncrementalHoareTripleChecker+Valid, 1471 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:56:08,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2091 Valid, 1414 Invalid, 1979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [507 Valid, 1471 Invalid, 1 Unknown, 0 Unchecked, 10.1s Time] [2022-11-21 16:56:08,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3804 states. [2022-11-21 16:56:09,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3804 to 3588. [2022-11-21 16:56:09,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3588 states, 2496 states have (on average 1.3605769230769231) internal successors, (3396), 2618 states have internal predecessors, (3396), 872 states have call successors, (872), 219 states have call predecessors, (872), 219 states have return successors, (870), 849 states have call predecessors, (870), 867 states have call successors, (870) [2022-11-21 16:56:09,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3588 states to 3588 states and 5138 transitions. [2022-11-21 16:56:09,165 INFO L78 Accepts]: Start accepts. Automaton has 3588 states and 5138 transitions. Word has length 38 [2022-11-21 16:56:09,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:56:09,165 INFO L495 AbstractCegarLoop]: Abstraction has 3588 states and 5138 transitions. [2022-11-21 16:56:09,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-21 16:56:09,166 INFO L276 IsEmpty]: Start isEmpty. Operand 3588 states and 5138 transitions. [2022-11-21 16:56:09,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-21 16:56:09,167 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:56:09,167 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] [2022-11-21 16:56:09,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 16:56:09,168 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:56:09,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:09,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1396473513, now seen corresponding path program 1 times [2022-11-21 16:56:09,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:09,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426126108] [2022-11-21 16:56:09,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:09,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:09,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:09,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 16:56:09,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:09,338 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-21 16:56:09,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:09,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426126108] [2022-11-21 16:56:09,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426126108] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:56:09,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:56:09,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:56:09,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107466053] [2022-11-21 16:56:09,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:09,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:56:09,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:09,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:56:09,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:56:09,341 INFO L87 Difference]: Start difference. First operand 3588 states and 5138 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-21 16:56:16,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:56:19,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:56:21,264 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 [] [2022-11-21 16:56:21,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:56:21,440 INFO L93 Difference]: Finished difference Result 3806 states and 5560 transitions. [2022-11-21 16:56:21,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:56:21,441 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2022-11-21 16:56:21,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:56:21,462 INFO L225 Difference]: With dead ends: 3806 [2022-11-21 16:56:21,469 INFO L226 Difference]: Without dead ends: 3803 [2022-11-21 16:56:21,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:56:21,472 INFO L413 NwaCegarLoop]: 1232 mSDtfsCounter, 1905 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 1466 mSolverCounterSat, 506 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2092 SdHoareTripleChecker+Valid, 1407 SdHoareTripleChecker+Invalid, 1974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 506 IncrementalHoareTripleChecker+Valid, 1466 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2022-11-21 16:56:21,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2092 Valid, 1407 Invalid, 1974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [506 Valid, 1466 Invalid, 2 Unknown, 0 Unchecked, 11.7s Time] [2022-11-21 16:56:21,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3803 states. [2022-11-21 16:56:21,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3803 to 3587. [2022-11-21 16:56:21,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3587 states, 2496 states have (on average 1.3601762820512822) internal successors, (3395), 2617 states have internal predecessors, (3395), 871 states have call successors, (871), 219 states have call predecessors, (871), 219 states have return successors, (870), 849 states have call predecessors, (870), 867 states have call successors, (870) [2022-11-21 16:56:21,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3587 states to 3587 states and 5136 transitions. [2022-11-21 16:56:21,824 INFO L78 Accepts]: Start accepts. Automaton has 3587 states and 5136 transitions. Word has length 39 [2022-11-21 16:56:21,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:56:21,825 INFO L495 AbstractCegarLoop]: Abstraction has 3587 states and 5136 transitions. [2022-11-21 16:56:21,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-21 16:56:21,825 INFO L276 IsEmpty]: Start isEmpty. Operand 3587 states and 5136 transitions. [2022-11-21 16:56:21,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-21 16:56:21,829 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:56:21,829 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] [2022-11-21 16:56:21,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 16:56:21,829 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:56:21,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:21,830 INFO L85 PathProgramCache]: Analyzing trace with hash -341640589, now seen corresponding path program 1 times [2022-11-21 16:56:21,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:21,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455674580] [2022-11-21 16:56:21,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:21,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:21,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:22,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 16:56:22,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:22,032 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-21 16:56:22,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:22,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455674580] [2022-11-21 16:56:22,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455674580] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:56:22,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:56:22,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:56:22,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149318416] [2022-11-21 16:56:22,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:22,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:56:22,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:22,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:56:22,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:56:22,037 INFO L87 Difference]: Start difference. First operand 3587 states and 5136 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-21 16:56:27,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:56:30,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:56:32,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:56:33,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:56:33,974 INFO L93 Difference]: Finished difference Result 3805 states and 5558 transitions. [2022-11-21 16:56:33,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:56:33,975 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2022-11-21 16:56:33,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:56:33,991 INFO L225 Difference]: With dead ends: 3805 [2022-11-21 16:56:33,991 INFO L226 Difference]: Without dead ends: 3802 [2022-11-21 16:56:33,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:56:33,993 INFO L413 NwaCegarLoop]: 1234 mSDtfsCounter, 1900 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 505 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2084 SdHoareTripleChecker+Valid, 1410 SdHoareTripleChecker+Invalid, 1977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 505 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2022-11-21 16:56:33,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2084 Valid, 1410 Invalid, 1977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [505 Valid, 1469 Invalid, 3 Unknown, 0 Unchecked, 11.6s Time] [2022-11-21 16:56:33,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3802 states. [2022-11-21 16:56:34,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3802 to 3586. [2022-11-21 16:56:34,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3586 states, 2496 states have (on average 1.359775641025641) internal successors, (3394), 2616 states have internal predecessors, (3394), 870 states have call successors, (870), 219 states have call predecessors, (870), 219 states have return successors, (870), 849 states have call predecessors, (870), 867 states have call successors, (870) [2022-11-21 16:56:34,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3586 states to 3586 states and 5134 transitions. [2022-11-21 16:56:34,340 INFO L78 Accepts]: Start accepts. Automaton has 3586 states and 5134 transitions. Word has length 40 [2022-11-21 16:56:34,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:56:34,341 INFO L495 AbstractCegarLoop]: Abstraction has 3586 states and 5134 transitions. [2022-11-21 16:56:34,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-21 16:56:34,341 INFO L276 IsEmpty]: Start isEmpty. Operand 3586 states and 5134 transitions. [2022-11-21 16:56:34,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-21 16:56:34,344 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:56:34,344 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] [2022-11-21 16:56:34,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 16:56:34,344 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:56:34,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:34,345 INFO L85 PathProgramCache]: Analyzing trace with hash -2001553446, now seen corresponding path program 1 times [2022-11-21 16:56:34,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:34,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602993436] [2022-11-21 16:56:34,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:34,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:34,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:34,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 16:56:34,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:34,520 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-21 16:56:34,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:34,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602993436] [2022-11-21 16:56:34,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602993436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:56:34,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:56:34,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:56:34,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066875622] [2022-11-21 16:56:34,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:34,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:56:34,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:34,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:56:34,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:56:34,523 INFO L87 Difference]: Start difference. First operand 3586 states and 5134 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-21 16:56:42,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:56:44,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:56:45,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:56:45,150 INFO L93 Difference]: Finished difference Result 3804 states and 5556 transitions. [2022-11-21 16:56:45,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:56:45,151 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2022-11-21 16:56:45,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:56:45,165 INFO L225 Difference]: With dead ends: 3804 [2022-11-21 16:56:45,165 INFO L226 Difference]: Without dead ends: 3801 [2022-11-21 16:56:45,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:56:45,168 INFO L413 NwaCegarLoop]: 1230 mSDtfsCounter, 1900 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 504 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2084 SdHoareTripleChecker+Valid, 1403 SdHoareTripleChecker+Invalid, 1975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 504 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:56:45,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2084 Valid, 1403 Invalid, 1975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [504 Valid, 1470 Invalid, 1 Unknown, 0 Unchecked, 10.2s Time] [2022-11-21 16:56:45,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3801 states. [2022-11-21 16:56:45,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3801 to 3585. [2022-11-21 16:56:45,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3585 states, 2496 states have (on average 1.359375) internal successors, (3393), 2615 states have internal predecessors, (3393), 869 states have call successors, (869), 219 states have call predecessors, (869), 219 states have return successors, (870), 849 states have call predecessors, (870), 867 states have call successors, (870) [2022-11-21 16:56:45,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3585 states to 3585 states and 5132 transitions. [2022-11-21 16:56:45,480 INFO L78 Accepts]: Start accepts. Automaton has 3585 states and 5132 transitions. Word has length 41 [2022-11-21 16:56:45,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:56:45,480 INFO L495 AbstractCegarLoop]: Abstraction has 3585 states and 5132 transitions. [2022-11-21 16:56:45,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-21 16:56:45,481 INFO L276 IsEmpty]: Start isEmpty. Operand 3585 states and 5132 transitions. [2022-11-21 16:56:45,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-21 16:56:45,482 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:56:45,482 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] [2022-11-21 16:56:45,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 16:56:45,483 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:56:45,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:45,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1919239594, now seen corresponding path program 1 times [2022-11-21 16:56:45,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:45,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623496891] [2022-11-21 16:56:45,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:45,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:45,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:45,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 16:56:45,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:45,645 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-21 16:56:45,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:45,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623496891] [2022-11-21 16:56:45,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623496891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:56:45,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:56:45,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:56:45,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740038360] [2022-11-21 16:56:45,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:45,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:56:45,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:45,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:56:45,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:56:45,647 INFO L87 Difference]: Start difference. First operand 3585 states and 5132 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-21 16:56:53,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:56:54,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:56:55,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:56:55,161 INFO L93 Difference]: Finished difference Result 3803 states and 5554 transitions. [2022-11-21 16:56:55,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:56:55,161 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2022-11-21 16:56:55,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:56:55,176 INFO L225 Difference]: With dead ends: 3803 [2022-11-21 16:56:55,176 INFO L226 Difference]: Without dead ends: 3772 [2022-11-21 16:56:55,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:56:55,181 INFO L413 NwaCegarLoop]: 1230 mSDtfsCounter, 1896 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 503 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2080 SdHoareTripleChecker+Valid, 1403 SdHoareTripleChecker+Invalid, 1972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 503 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:56:55,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2080 Valid, 1403 Invalid, 1972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [503 Valid, 1469 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2022-11-21 16:56:55,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3772 states. [2022-11-21 16:56:55,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3772 to 3556. [2022-11-21 16:56:55,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3556 states, 2473 states have (on average 1.360695511524464) internal successors, (3365), 2591 states have internal predecessors, (3365), 864 states have call successors, (864), 218 states have call predecessors, (864), 218 states have return successors, (866), 845 states have call predecessors, (866), 863 states have call successors, (866) [2022-11-21 16:56:55,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 5095 transitions. [2022-11-21 16:56:55,624 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 5095 transitions. Word has length 42 [2022-11-21 16:56:55,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:56:55,624 INFO L495 AbstractCegarLoop]: Abstraction has 3556 states and 5095 transitions. [2022-11-21 16:56:55,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-21 16:56:55,625 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 5095 transitions. [2022-11-21 16:56:55,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-21 16:56:55,631 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:56:55,631 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:56:55,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 16:56:55,631 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:56:55,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:56:55,632 INFO L85 PathProgramCache]: Analyzing trace with hash -130821556, now seen corresponding path program 1 times [2022-11-21 16:56:55,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:56:55,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409361925] [2022-11-21 16:56:55,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:56:55,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:56:55,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:55,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 16:56:55,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:55,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-21 16:56:55,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:55,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-21 16:56:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:55,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-21 16:56:55,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:55,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:56:55,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:55,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:56:55,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:55,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-21 16:56:55,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:55,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-21 16:56:55,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:55,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-21 16:56:55,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:55,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-21 16:56:55,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:55,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-21 16:56:56,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:56,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-21 16:56:56,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:56:56,016 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 16:56:56,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:56:56,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409361925] [2022-11-21 16:56:56,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409361925] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:56:56,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:56:56,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 16:56:56,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348184976] [2022-11-21 16:56:56,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:56:56,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:56:56,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:56:56,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:56:56,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:56:56,020 INFO L87 Difference]: Start difference. First operand 3556 states and 5095 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-21 16:57:04,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:57:09,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:57:12,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:57:14,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:57:15,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:57:15,127 INFO L93 Difference]: Finished difference Result 7428 states and 11155 transitions. [2022-11-21 16:57:15,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 16:57:15,128 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 119 [2022-11-21 16:57:15,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:57:15,143 INFO L225 Difference]: With dead ends: 7428 [2022-11-21 16:57:15,143 INFO L226 Difference]: Without dead ends: 3875 [2022-11-21 16:57:15,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-11-21 16:57:15,157 INFO L413 NwaCegarLoop]: 1262 mSDtfsCounter, 1584 mSDsluCounter, 3555 mSDsCounter, 0 mSdLazyCounter, 3906 mSolverCounterSat, 701 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1812 SdHoareTripleChecker+Valid, 4817 SdHoareTripleChecker+Invalid, 4608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 701 IncrementalHoareTripleChecker+Valid, 3906 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2022-11-21 16:57:15,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1812 Valid, 4817 Invalid, 4608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [701 Valid, 3906 Invalid, 1 Unknown, 0 Unchecked, 18.5s Time] [2022-11-21 16:57:15,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3875 states. [2022-11-21 16:57:15,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3875 to 2623. [2022-11-21 16:57:15,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2623 states, 1854 states have (on average 1.3732470334412081) internal successors, (2546), 1933 states have internal predecessors, (2546), 605 states have call successors, (605), 163 states have call predecessors, (605), 163 states have return successors, (607), 592 states have call predecessors, (607), 604 states have call successors, (607) [2022-11-21 16:57:15,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2623 states to 2623 states and 3758 transitions. [2022-11-21 16:57:15,516 INFO L78 Accepts]: Start accepts. Automaton has 2623 states and 3758 transitions. Word has length 119 [2022-11-21 16:57:15,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:57:15,517 INFO L495 AbstractCegarLoop]: Abstraction has 2623 states and 3758 transitions. [2022-11-21 16:57:15,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-21 16:57:15,517 INFO L276 IsEmpty]: Start isEmpty. Operand 2623 states and 3758 transitions. [2022-11-21 16:57:15,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-21 16:57:15,523 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:57:15,523 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:57:15,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 16:57:15,524 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:57:15,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:57:15,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1262052225, now seen corresponding path program 1 times [2022-11-21 16:57:15,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:57:15,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641182246] [2022-11-21 16:57:15,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:57:15,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:57:15,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:15,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 16:57:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:16,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-21 16:57:16,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:16,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 16:57:16,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:16,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 16:57:16,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:16,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 16:57:16,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:16,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:57:16,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:16,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:57:16,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:16,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-21 16:57:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:16,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-21 16:57:16,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:16,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-21 16:57:16,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:16,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-21 16:57:16,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:16,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-21 16:57:16,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:16,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-21 16:57:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:16,163 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-21 16:57:16,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:57:16,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641182246] [2022-11-21 16:57:16,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641182246] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:57:16,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:57:16,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 16:57:16,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292005778] [2022-11-21 16:57:16,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:57:16,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:57:16,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:57:16,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:57:16,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:57:16,166 INFO L87 Difference]: Start difference. First operand 2623 states and 3758 transitions. Second operand has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (21), 9 states have call predecessors, (21), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-21 16:57:27,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:57:28,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:57:33,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:57:35,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:57:37,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:57:38,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:57:39,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:57:39,150 INFO L93 Difference]: Finished difference Result 3826 states and 6005 transitions. [2022-11-21 16:57:39,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 16:57:39,159 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (21), 9 states have call predecessors, (21), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 138 [2022-11-21 16:57:39,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:57:39,161 INFO L225 Difference]: With dead ends: 3826 [2022-11-21 16:57:39,162 INFO L226 Difference]: Without dead ends: 0 [2022-11-21 16:57:39,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2022-11-21 16:57:39,180 INFO L413 NwaCegarLoop]: 1152 mSDtfsCounter, 2447 mSDsluCounter, 3270 mSDsCounter, 0 mSdLazyCounter, 4286 mSolverCounterSat, 2161 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2627 SdHoareTripleChecker+Valid, 4422 SdHoareTripleChecker+Invalid, 6449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2161 IncrementalHoareTripleChecker+Valid, 4286 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:57:39,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2627 Valid, 4422 Invalid, 6449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2161 Valid, 4286 Invalid, 2 Unknown, 0 Unchecked, 22.3s Time] [2022-11-21 16:57:39,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-21 16:57:39,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-21 16:57:39,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:39,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-21 16:57:39,183 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 138 [2022-11-21 16:57:39,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:57:39,184 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-21 16:57:39,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (21), 9 states have call predecessors, (21), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-21 16:57:39,184 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-21 16:57:39,184 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-21 16:57:39,187 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-21 16:57:39,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 16:57:39,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-21 16:57:54,274 WARN L233 SmtUtils]: Spent 10.53s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 16:58:05,330 WARN L233 SmtUtils]: Spent 9.96s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 16:58:15,315 WARN L233 SmtUtils]: Spent 9.98s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 16:58:25,289 WARN L233 SmtUtils]: Spent 9.97s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 16:58:35,246 WARN L233 SmtUtils]: Spent 9.96s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 16:58:46,156 WARN L233 SmtUtils]: Spent 9.81s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 16:58:57,083 WARN L233 SmtUtils]: Spent 9.84s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 16:59:06,861 WARN L233 SmtUtils]: Spent 9.78s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 16:59:18,832 WARN L233 SmtUtils]: Spent 9.82s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 16:59:29,721 WARN L233 SmtUtils]: Spent 9.78s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 16:59:40,701 WARN L233 SmtUtils]: Spent 9.87s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 16:59:54,057 WARN L233 SmtUtils]: Spent 10.02s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 17:00:03,993 WARN L233 SmtUtils]: Spent 9.93s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 17:00:15,109 WARN L233 SmtUtils]: Spent 10.00s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 17:00:25,078 WARN L233 SmtUtils]: Spent 9.97s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 17:00:37,176 WARN L233 SmtUtils]: Spent 9.88s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 17:02:06,173 WARN L233 SmtUtils]: Spent 5.35s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 17:02:23,997 WARN L233 SmtUtils]: Spent 12.16s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 17:02:31,200 WARN L233 SmtUtils]: Spent 5.53s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 17:02:36,532 WARN L233 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 17:02:41,839 WARN L233 SmtUtils]: Spent 5.31s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 17:02:55,662 WARN L233 SmtUtils]: Spent 6.29s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 17:03:01,122 WARN L233 SmtUtils]: Spent 5.46s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 17:03:12,428 WARN L233 SmtUtils]: Spent 5.71s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 17:03:17,727 WARN L233 SmtUtils]: Spent 5.30s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 17:03:22,878 WARN L233 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 17:03:37,733 WARN L233 SmtUtils]: Spent 6.15s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 17:03:43,287 WARN L233 SmtUtils]: Spent 5.55s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 17:03:48,762 WARN L233 SmtUtils]: Spent 5.47s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 17:03:57,561 WARN L233 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 17:04:03,322 WARN L233 SmtUtils]: Spent 5.19s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 17:04:08,535 WARN L233 SmtUtils]: Spent 5.21s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 17:04:14,107 WARN L233 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 17:04:25,170 WARN L233 SmtUtils]: Spent 5.61s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 17:04:30,712 WARN L233 SmtUtils]: Spent 5.54s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 17:04:36,405 WARN L233 SmtUtils]: Spent 5.69s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 17:04:41,542 WARN L233 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 17:04:47,156 WARN L233 SmtUtils]: Spent 5.12s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 17:04:52,310 WARN L233 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 17:05:08,956 WARN L233 SmtUtils]: Spent 10.39s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 17:05:22,057 WARN L233 SmtUtils]: Spent 11.98s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 17:05:44,725 WARN L233 SmtUtils]: Spent 5.12s on a formula simplification. DAG size of input: 81 DAG size of output: 79 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 17:06:08,945 WARN L233 SmtUtils]: Spent 18.47s on a formula simplification. DAG size of input: 83 DAG size of output: 81 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 17:06:27,070 WARN L233 SmtUtils]: Spent 18.12s on a formula simplification. DAG size of input: 83 DAG size of output: 81 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 17:06:45,337 WARN L233 SmtUtils]: Spent 18.25s on a formula simplification. DAG size of input: 83 DAG size of output: 81 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 17:07:06,541 WARN L233 SmtUtils]: Spent 19.08s on a formula simplification. DAG size of input: 83 DAG size of output: 81 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 17:07:26,970 WARN L233 SmtUtils]: Spent 18.34s on a formula simplification. DAG size of input: 83 DAG size of output: 81 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 17:07:47,164 WARN L233 SmtUtils]: Spent 18.12s on a formula simplification. DAG size of input: 83 DAG size of output: 81 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 17:08:07,125 WARN L233 SmtUtils]: Spent 17.98s on a formula simplification. DAG size of input: 83 DAG size of output: 81 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 17:08:28,930 WARN L233 SmtUtils]: Spent 17.93s on a formula simplification. DAG size of input: 83 DAG size of output: 81 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-21 17:08:50,690 WARN L233 SmtUtils]: Spent 17.87s on a formula simplification. DAG size of input: 83 DAG size of output: 81 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)