./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.6/linux-torvalds-645ef9e-32_7a-sound--oss--sound.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_2cc93e3d-0487-41cb-b648-9b389fa0b4f0/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc93e3d-0487-41cb-b648-9b389fa0b4f0/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc93e3d-0487-41cb-b648-9b389fa0b4f0/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc93e3d-0487-41cb-b648-9b389fa0b4f0/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.6/linux-torvalds-645ef9e-32_7a-sound--oss--sound.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc93e3d-0487-41cb-b648-9b389fa0b4f0/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc93e3d-0487-41cb-b648-9b389fa0b4f0/bin/uautomizer-TMbwUNV5ro --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 fa2b7015249343fdf8056852ea29542152fe4e2fe5328579e80867d2e6b2b327 --- 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-8393723 [2022-11-18 19:44:36,082 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:44:36,084 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:44:36,127 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:44:36,128 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:44:36,132 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:44:36,135 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:44:36,138 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:44:36,140 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:44:36,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:44:36,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:44:36,149 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:44:36,149 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:44:36,150 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:44:36,151 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:44:36,152 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:44:36,153 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:44:36,154 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:44:36,155 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:44:36,157 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:44:36,159 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:44:36,160 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:44:36,161 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:44:36,162 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:44:36,166 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:44:36,166 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:44:36,167 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:44:36,168 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:44:36,168 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:44:36,169 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:44:36,169 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:44:36,170 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:44:36,171 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:44:36,172 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:44:36,173 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:44:36,174 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:44:36,174 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:44:36,175 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:44:36,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:44:36,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:44:36,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:44:36,177 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc93e3d-0487-41cb-b648-9b389fa0b4f0/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-18 19:44:36,211 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:44:36,211 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:44:36,212 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:44:36,212 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:44:36,213 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:44:36,213 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:44:36,214 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:44:36,214 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:44:36,214 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:44:36,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:44:36,215 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:44:36,216 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:44:36,216 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:44:36,216 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:44:36,216 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:44:36,217 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:44:36,217 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:44:36,217 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:44:36,217 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:44:36,218 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:44:36,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:44:36,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:44:36,218 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:44:36,218 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:44:36,219 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:44:36,219 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:44:36,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:44:36,221 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:44:36,221 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:44:36,221 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:44:36,221 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_2cc93e3d-0487-41cb-b648-9b389fa0b4f0/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc93e3d-0487-41cb-b648-9b389fa0b4f0/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa2b7015249343fdf8056852ea29542152fe4e2fe5328579e80867d2e6b2b327 [2022-11-18 19:44:36,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:44:36,546 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:44:36,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:44:36,550 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:44:36,551 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:44:36,552 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc93e3d-0487-41cb-b648-9b389fa0b4f0/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/ldv-validator-v0.6/linux-torvalds-645ef9e-32_7a-sound--oss--sound.ko-entry_point.cil.out.i [2022-11-18 19:44:36,628 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc93e3d-0487-41cb-b648-9b389fa0b4f0/bin/uautomizer-TMbwUNV5ro/data/5cbd9dccf/8c47d3fec5cc4aed82db2f715f78eb11/FLAG18c40d73f [2022-11-18 19:44:37,703 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:44:37,704 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc93e3d-0487-41cb-b648-9b389fa0b4f0/sv-benchmarks/c/ldv-validator-v0.6/linux-torvalds-645ef9e-32_7a-sound--oss--sound.ko-entry_point.cil.out.i [2022-11-18 19:44:37,755 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc93e3d-0487-41cb-b648-9b389fa0b4f0/bin/uautomizer-TMbwUNV5ro/data/5cbd9dccf/8c47d3fec5cc4aed82db2f715f78eb11/FLAG18c40d73f [2022-11-18 19:44:38,017 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc93e3d-0487-41cb-b648-9b389fa0b4f0/bin/uautomizer-TMbwUNV5ro/data/5cbd9dccf/8c47d3fec5cc4aed82db2f715f78eb11 [2022-11-18 19:44:38,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:44:38,025 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:44:38,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:44:38,027 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:44:38,031 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:44:38,031 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:44:38" (1/1) ... [2022-11-18 19:44:38,033 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cd7a430 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:44:38, skipping insertion in model container [2022-11-18 19:44:38,033 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:44:38" (1/1) ... [2022-11-18 19:44:38,041 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:44:38,216 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:44:38,863 WARN L234 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_2cc93e3d-0487-41cb-b648-9b389fa0b4f0/sv-benchmarks/c/ldv-validator-v0.6/linux-torvalds-645ef9e-32_7a-sound--oss--sound.ko-entry_point.cil.out.i[81795,81808] [2022-11-18 19:44:41,556 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:44:41,693 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:44:41,779 WARN L234 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_2cc93e3d-0487-41cb-b648-9b389fa0b4f0/sv-benchmarks/c/ldv-validator-v0.6/linux-torvalds-645ef9e-32_7a-sound--oss--sound.ko-entry_point.cil.out.i[81795,81808] [2022-11-18 19:44:42,198 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:44:42,403 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:44:42,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:44:42 WrapperNode [2022-11-18 19:44:42,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:44:42,405 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:44:42,405 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:44:42,405 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:44:42,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:44:42" (1/1) ... [2022-11-18 19:44:42,547 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:44:42" (1/1) ... [2022-11-18 19:44:42,900 INFO L138 Inliner]: procedures = 414, calls = 5182, calls flagged for inlining = 149, calls inlined = 134, statements flattened = 10182 [2022-11-18 19:44:42,900 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:44:42,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:44:42,902 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:44:42,902 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:44:42,915 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:44:42" (1/1) ... [2022-11-18 19:44:42,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:44:42" (1/1) ... [2022-11-18 19:44:42,998 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:44:42" (1/1) ... [2022-11-18 19:44:42,998 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:44:42" (1/1) ... [2022-11-18 19:44:43,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:44:42" (1/1) ... [2022-11-18 19:44:43,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:44:42" (1/1) ... [2022-11-18 19:44:43,333 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:44:42" (1/1) ... [2022-11-18 19:44:43,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:44:42" (1/1) ... [2022-11-18 19:44:43,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:44:43,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:44:43,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:44:43,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:44:43,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:44:42" (1/1) ... [2022-11-18 19:44:43,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:44:43,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc93e3d-0487-41cb-b648-9b389fa0b4f0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:44:43,437 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc93e3d-0487-41cb-b648-9b389fa0b4f0/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:44:43,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc93e3d-0487-41cb-b648-9b389fa0b4f0/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:44:43,490 INFO L130 BoogieDeclarations]: Found specification of procedure timer_open [2022-11-18 19:44:43,490 INFO L138 BoogieDeclarations]: Found implementation of procedure timer_open [2022-11-18 19:44:43,490 INFO L130 BoogieDeclarations]: Found specification of procedure poll_def_tmr [2022-11-18 19:44:43,491 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_def_tmr [2022-11-18 19:44:43,491 INFO L130 BoogieDeclarations]: Found specification of procedure timer_event [2022-11-18 19:44:43,491 INFO L138 BoogieDeclarations]: Found implementation of procedure timer_event [2022-11-18 19:44:43,491 INFO L130 BoogieDeclarations]: Found specification of procedure default_set_channels [2022-11-18 19:44:43,491 INFO L138 BoogieDeclarations]: Found implementation of procedure default_set_channels [2022-11-18 19:44:43,491 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-18 19:44:43,492 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-18 19:44:43,492 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-18 19:44:43,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-18 19:44:43,492 INFO L130 BoogieDeclarations]: Found specification of procedure dma_reset_output [2022-11-18 19:44:43,492 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_reset_output [2022-11-18 19:44:43,492 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~X~int~TO~int [2022-11-18 19:44:43,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~X~int~TO~int [2022-11-18 19:44:43,493 INFO L130 BoogieDeclarations]: Found specification of procedure seq_input_event [2022-11-18 19:44:43,493 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_input_event [2022-11-18 19:44:43,493 INFO L130 BoogieDeclarations]: Found specification of procedure DMAbuf_release [2022-11-18 19:44:43,493 INFO L138 BoogieDeclarations]: Found implementation of procedure DMAbuf_release [2022-11-18 19:44:43,494 INFO L130 BoogieDeclarations]: Found specification of procedure local_start_dma [2022-11-18 19:44:43,494 INFO L138 BoogieDeclarations]: Found implementation of procedure local_start_dma [2022-11-18 19:44:43,494 INFO L130 BoogieDeclarations]: Found specification of procedure translate_bytes [2022-11-18 19:44:43,494 INFO L138 BoogieDeclarations]: Found implementation of procedure translate_bytes [2022-11-18 19:44:43,494 INFO L130 BoogieDeclarations]: Found specification of procedure __put_user_bad [2022-11-18 19:44:43,494 INFO L130 BoogieDeclarations]: Found specification of procedure seq_copy_to_input [2022-11-18 19:44:43,495 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_copy_to_input [2022-11-18 19:44:43,495 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-18 19:44:43,496 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-18 19:44:43,496 INFO L130 BoogieDeclarations]: Found specification of procedure DMAbuf_sync [2022-11-18 19:44:43,496 INFO L138 BoogieDeclarations]: Found implementation of procedure DMAbuf_sync [2022-11-18 19:44:43,496 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~X~$Pointer$~TO~int [2022-11-18 19:44:43,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~X~$Pointer$~TO~int [2022-11-18 19:44:43,496 INFO L130 BoogieDeclarations]: Found specification of procedure DMAbuf_launch_output [2022-11-18 19:44:43,497 INFO L138 BoogieDeclarations]: Found implementation of procedure DMAbuf_launch_output [2022-11-18 19:44:43,497 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-18 19:44:43,497 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-18 19:44:43,497 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_soundcard_mutex [2022-11-18 19:44:43,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_soundcard_mutex [2022-11-18 19:44:43,498 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-18 19:44:43,498 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-18 19:44:43,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:44:43,498 INFO L130 BoogieDeclarations]: Found specification of procedure DMAbuf_space_in_queue [2022-11-18 19:44:43,498 INFO L138 BoogieDeclarations]: Found implementation of procedure DMAbuf_space_in_queue [2022-11-18 19:44:43,499 INFO L130 BoogieDeclarations]: Found specification of procedure timer_get_time [2022-11-18 19:44:43,499 INFO L138 BoogieDeclarations]: Found implementation of procedure timer_get_time [2022-11-18 19:44:43,499 INFO L130 BoogieDeclarations]: Found specification of procedure enable_dma [2022-11-18 19:44:43,499 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_dma [2022-11-18 19:44:43,500 INFO L130 BoogieDeclarations]: Found specification of procedure timer_ioctl [2022-11-18 19:44:43,500 INFO L138 BoogieDeclarations]: Found implementation of procedure timer_ioctl [2022-11-18 19:44:43,500 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-18 19:44:43,500 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-18 19:44:43,500 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2022-11-18 19:44:43,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2022-11-18 19:44:43,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-18 19:44:43,501 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-18 19:44:43,501 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-18 19:44:43,503 INFO L130 BoogieDeclarations]: Found specification of procedure sound_mixer_ioctl [2022-11-18 19:44:43,503 INFO L138 BoogieDeclarations]: Found implementation of procedure sound_mixer_ioctl [2022-11-18 19:44:43,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-18 19:44:43,503 INFO L130 BoogieDeclarations]: Found specification of procedure midi_poll [2022-11-18 19:44:43,503 INFO L138 BoogieDeclarations]: Found implementation of procedure midi_poll [2022-11-18 19:44:43,503 INFO L130 BoogieDeclarations]: Found specification of procedure def_tmr_arm [2022-11-18 19:44:43,504 INFO L138 BoogieDeclarations]: Found implementation of procedure def_tmr_arm [2022-11-18 19:44:43,504 INFO L130 BoogieDeclarations]: Found specification of procedure dma_subdivide [2022-11-18 19:44:43,504 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_subdivide [2022-11-18 19:44:43,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:44:43,505 INFO L130 BoogieDeclarations]: Found specification of procedure DMAbuf_activate_recording [2022-11-18 19:44:43,505 INFO L138 BoogieDeclarations]: Found implementation of procedure DMAbuf_activate_recording [2022-11-18 19:44:43,505 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-18 19:44:43,505 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-18 19:44:43,505 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_to_user [2022-11-18 19:44:43,505 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_to_user [2022-11-18 19:44:43,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-18 19:44:43,506 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-18 19:44:43,506 INFO L130 BoogieDeclarations]: Found specification of procedure seq_sync [2022-11-18 19:44:43,506 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_sync [2022-11-18 19:44:43,506 INFO L130 BoogieDeclarations]: Found specification of procedure default_set_bits [2022-11-18 19:44:43,506 INFO L138 BoogieDeclarations]: Found implementation of procedure default_set_bits [2022-11-18 19:44:43,507 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_sound_special [2022-11-18 19:44:43,507 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_sound_special [2022-11-18 19:44:43,616 INFO L130 BoogieDeclarations]: Found specification of procedure close_dmap [2022-11-18 19:44:43,616 INFO L138 BoogieDeclarations]: Found implementation of procedure close_dmap [2022-11-18 19:44:43,616 INFO L130 BoogieDeclarations]: Found specification of procedure def_tmr_close [2022-11-18 19:44:43,616 INFO L138 BoogieDeclarations]: Found implementation of procedure def_tmr_close [2022-11-18 19:44:43,616 INFO L130 BoogieDeclarations]: Found specification of procedure __get_user_bad [2022-11-18 19:44:43,616 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-11-18 19:44:43,616 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-11-18 19:44:43,617 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-18 19:44:43,617 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-18 19:44:43,617 INFO L130 BoogieDeclarations]: Found specification of procedure timer_arm [2022-11-18 19:44:43,617 INFO L138 BoogieDeclarations]: Found implementation of procedure timer_arm [2022-11-18 19:44:43,617 INFO L130 BoogieDeclarations]: Found specification of procedure register_sound_special [2022-11-18 19:44:43,617 INFO L138 BoogieDeclarations]: Found implementation of procedure register_sound_special [2022-11-18 19:44:43,617 INFO L130 BoogieDeclarations]: Found specification of procedure sound_mmap [2022-11-18 19:44:43,618 INFO L138 BoogieDeclarations]: Found implementation of procedure sound_mmap [2022-11-18 19:44:43,618 INFO L130 BoogieDeclarations]: Found specification of procedure virt_to_phys [2022-11-18 19:44:43,618 INFO L138 BoogieDeclarations]: Found implementation of procedure virt_to_phys [2022-11-18 19:44:43,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 19:44:43,618 INFO L130 BoogieDeclarations]: Found specification of procedure claim_dma_lock [2022-11-18 19:44:43,618 INFO L138 BoogieDeclarations]: Found implementation of procedure claim_dma_lock [2022-11-18 19:44:43,618 INFO L130 BoogieDeclarations]: Found specification of procedure timer_close [2022-11-18 19:44:43,618 INFO L138 BoogieDeclarations]: Found implementation of procedure timer_close [2022-11-18 19:44:43,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:44:43,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 19:44:43,619 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-18 19:44:43,619 INFO L130 BoogieDeclarations]: Found specification of procedure dma_reset_input [2022-11-18 19:44:43,619 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_reset_input [2022-11-18 19:44:43,619 INFO L130 BoogieDeclarations]: Found specification of procedure interruptible_sleep_on_timeout [2022-11-18 19:44:43,619 INFO L138 BoogieDeclarations]: Found implementation of procedure interruptible_sleep_on_timeout [2022-11-18 19:44:43,620 INFO L130 BoogieDeclarations]: Found specification of procedure set_format [2022-11-18 19:44:43,620 INFO L138 BoogieDeclarations]: Found implementation of procedure set_format [2022-11-18 19:44:43,620 INFO L130 BoogieDeclarations]: Found specification of procedure DMAbuf_reset [2022-11-18 19:44:43,620 INFO L138 BoogieDeclarations]: Found implementation of procedure DMAbuf_reset [2022-11-18 19:44:43,620 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_notrace [2022-11-18 19:44:43,620 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_notrace [2022-11-18 19:44:43,620 INFO L130 BoogieDeclarations]: Found specification of procedure seq_reset [2022-11-18 19:44:43,620 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_reset [2022-11-18 19:44:43,621 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2022-11-18 19:44:43,621 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2022-11-18 19:44:43,621 INFO L130 BoogieDeclarations]: Found specification of procedure seq_drain_midi_queues [2022-11-18 19:44:43,621 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_drain_midi_queues [2022-11-18 19:44:43,621 INFO L130 BoogieDeclarations]: Found specification of procedure dma_ioctl [2022-11-18 19:44:43,621 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_ioctl [2022-11-18 19:44:43,621 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_soundcard_mutex [2022-11-18 19:44:43,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_soundcard_mutex [2022-11-18 19:44:43,622 INFO L130 BoogieDeclarations]: Found specification of procedure device_destroy [2022-11-18 19:44:43,622 INFO L138 BoogieDeclarations]: Found implementation of procedure device_destroy [2022-11-18 19:44:43,622 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~X~int~X~int~TO~int [2022-11-18 19:44:43,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~X~int~X~int~TO~int [2022-11-18 19:44:43,622 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~VOID [2022-11-18 19:44:43,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~VOID [2022-11-18 19:44:43,622 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2022-11-18 19:44:43,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2022-11-18 19:44:43,623 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_dereference [2022-11-18 19:44:43,623 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_dereference [2022-11-18 19:44:43,623 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-18 19:44:43,623 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-18 19:44:43,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:44:43,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:44:43,629 INFO L130 BoogieDeclarations]: Found specification of procedure seq_startplay [2022-11-18 19:44:43,629 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_startplay [2022-11-18 19:44:43,629 INFO L130 BoogieDeclarations]: Found specification of procedure clear_dma_ff [2022-11-18 19:44:43,629 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_dma_ff [2022-11-18 19:44:43,629 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~X~int~TO~VOID [2022-11-18 19:44:43,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~X~int~TO~VOID [2022-11-18 19:44:43,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-11-18 19:44:43,630 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-11-18 19:44:43,630 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~X~$Pointer$~X~$Pointer$~TO~int [2022-11-18 19:44:43,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~X~$Pointer$~X~$Pointer$~TO~int [2022-11-18 19:44:43,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-18 19:44:43,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-18 19:44:43,632 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-18 19:44:43,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-18 19:44:43,632 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-18 19:44:43,633 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-18 19:44:43,633 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-18 19:44:43,643 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~int [2022-11-18 19:44:43,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~int [2022-11-18 19:44:43,647 INFO L130 BoogieDeclarations]: Found specification of procedure translate_mode [2022-11-18 19:44:43,647 INFO L138 BoogieDeclarations]: Found implementation of procedure translate_mode [2022-11-18 19:44:43,648 INFO L130 BoogieDeclarations]: Found specification of procedure try_module_get___0 [2022-11-18 19:44:43,648 INFO L138 BoogieDeclarations]: Found implementation of procedure try_module_get___0 [2022-11-18 19:44:43,648 INFO L130 BoogieDeclarations]: Found specification of procedure DMAbuf_move_wrpointer [2022-11-18 19:44:43,648 INFO L138 BoogieDeclarations]: Found implementation of procedure DMAbuf_move_wrpointer [2022-11-18 19:44:43,648 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-18 19:44:43,648 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-18 19:44:43,649 INFO L130 BoogieDeclarations]: Found specification of procedure tmr_reset [2022-11-18 19:44:43,649 INFO L138 BoogieDeclarations]: Found implementation of procedure tmr_reset [2022-11-18 19:44:43,649 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-18 19:44:43,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-18 19:44:43,649 INFO L130 BoogieDeclarations]: Found specification of procedure sound_stop_timer [2022-11-18 19:44:43,650 INFO L138 BoogieDeclarations]: Found implementation of procedure sound_stop_timer [2022-11-18 19:44:43,650 INFO L130 BoogieDeclarations]: Found specification of procedure tmr2ticks___0 [2022-11-18 19:44:43,650 INFO L138 BoogieDeclarations]: Found implementation of procedure tmr2ticks___0 [2022-11-18 19:44:43,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-18 19:44:43,650 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-18 19:44:43,650 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-18 19:44:43,651 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-18 19:44:43,651 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-18 19:44:43,651 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-18 19:44:43,651 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-18 19:44:43,651 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-18 19:44:43,652 INFO L130 BoogieDeclarations]: Found specification of procedure tmr_reset___0 [2022-11-18 19:44:43,652 INFO L138 BoogieDeclarations]: Found implementation of procedure tmr_reset___0 [2022-11-18 19:44:43,652 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~X~int~X~int~TO~VOID [2022-11-18 19:44:43,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~X~int~X~int~TO~VOID [2022-11-18 19:44:43,652 INFO L130 BoogieDeclarations]: Found specification of procedure poll_wait [2022-11-18 19:44:43,652 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_wait [2022-11-18 19:44:43,653 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_held [2022-11-18 19:44:43,653 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_held [2022-11-18 19:44:43,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:44:43,653 INFO L130 BoogieDeclarations]: Found specification of procedure sound_free_dmap [2022-11-18 19:44:43,653 INFO L138 BoogieDeclarations]: Found implementation of procedure sound_free_dmap [2022-11-18 19:44:43,654 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2022-11-18 19:44:43,654 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2022-11-18 19:44:43,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 19:44:43,654 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-18 19:44:43,654 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-18 19:44:43,654 INFO L130 BoogieDeclarations]: Found specification of procedure reprogram_timer [2022-11-18 19:44:43,655 INFO L138 BoogieDeclarations]: Found implementation of procedure reprogram_timer [2022-11-18 19:44:43,655 INFO L130 BoogieDeclarations]: Found specification of procedure midi_outc___0 [2022-11-18 19:44:43,655 INFO L138 BoogieDeclarations]: Found implementation of procedure midi_outc___0 [2022-11-18 19:44:43,655 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2022-11-18 19:44:43,655 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2022-11-18 19:44:43,656 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~int [2022-11-18 19:44:43,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~int [2022-11-18 19:44:43,656 INFO L130 BoogieDeclarations]: Found specification of procedure dmabuf_timeout [2022-11-18 19:44:43,656 INFO L138 BoogieDeclarations]: Found implementation of procedure dmabuf_timeout [2022-11-18 19:44:43,656 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info___0 [2022-11-18 19:44:43,656 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info___0 [2022-11-18 19:44:43,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-18 19:44:43,657 INFO L130 BoogieDeclarations]: Found specification of procedure module_is_live [2022-11-18 19:44:43,657 INFO L138 BoogieDeclarations]: Found implementation of procedure module_is_live [2022-11-18 19:44:43,657 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-18 19:44:43,657 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-18 19:44:43,658 INFO L130 BoogieDeclarations]: Found specification of procedure sound_start_dma [2022-11-18 19:44:43,658 INFO L138 BoogieDeclarations]: Found implementation of procedure sound_start_dma [2022-11-18 19:44:43,658 INFO L130 BoogieDeclarations]: Found specification of procedure def_tmr_event [2022-11-18 19:44:43,658 INFO L138 BoogieDeclarations]: Found implementation of procedure def_tmr_event [2022-11-18 19:44:43,658 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-18 19:44:43,659 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-18 19:44:43,659 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-18 19:44:43,666 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-18 19:44:43,667 INFO L130 BoogieDeclarations]: Found specification of procedure def_tmr_open [2022-11-18 19:44:43,667 INFO L138 BoogieDeclarations]: Found implementation of procedure def_tmr_open [2022-11-18 19:44:43,667 INFO L130 BoogieDeclarations]: Found specification of procedure do_midi_msg [2022-11-18 19:44:43,667 INFO L138 BoogieDeclarations]: Found implementation of procedure do_midi_msg [2022-11-18 19:44:43,667 INFO L130 BoogieDeclarations]: Found specification of procedure interruptible_sleep_on [2022-11-18 19:44:43,668 INFO L138 BoogieDeclarations]: Found implementation of procedure interruptible_sleep_on [2022-11-18 19:44:43,668 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-18 19:44:43,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-18 19:44:43,669 INFO L130 BoogieDeclarations]: Found specification of procedure waitqueue_active [2022-11-18 19:44:43,669 INFO L138 BoogieDeclarations]: Found implementation of procedure waitqueue_active [2022-11-18 19:44:43,669 INFO L130 BoogieDeclarations]: Found specification of procedure sound_alloc_dmap [2022-11-18 19:44:43,669 INFO L138 BoogieDeclarations]: Found implementation of procedure sound_alloc_dmap [2022-11-18 19:44:43,670 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_fragment [2022-11-18 19:44:43,670 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_fragment [2022-11-18 19:44:43,670 INFO L130 BoogieDeclarations]: Found specification of procedure def_tmr_get_time [2022-11-18 19:44:43,670 INFO L138 BoogieDeclarations]: Found implementation of procedure def_tmr_get_time [2022-11-18 19:44:43,671 INFO L130 BoogieDeclarations]: Found specification of procedure sequencer_timer [2022-11-18 19:44:43,671 INFO L138 BoogieDeclarations]: Found implementation of procedure sequencer_timer [2022-11-18 19:44:43,671 INFO L130 BoogieDeclarations]: Found specification of procedure default_set_speed [2022-11-18 19:44:43,671 INFO L138 BoogieDeclarations]: Found implementation of procedure default_set_speed [2022-11-18 19:44:43,671 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2022-11-18 19:44:43,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2022-11-18 19:44:43,673 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_residue [2022-11-18 19:44:43,676 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_residue [2022-11-18 19:44:43,676 INFO L130 BoogieDeclarations]: Found specification of procedure sync_output [2022-11-18 19:44:43,676 INFO L138 BoogieDeclarations]: Found implementation of procedure sync_output [2022-11-18 19:44:43,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:44:43,677 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-18 19:44:43,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-18 19:44:43,679 INFO L130 BoogieDeclarations]: Found specification of procedure copy_user_generic [2022-11-18 19:44:43,679 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_user_generic [2022-11-18 19:44:43,679 INFO L130 BoogieDeclarations]: Found specification of procedure open_dmap [2022-11-18 19:44:43,686 INFO L138 BoogieDeclarations]: Found implementation of procedure open_dmap [2022-11-18 19:44:43,686 INFO L130 BoogieDeclarations]: Found specification of procedure release_dma_lock [2022-11-18 19:44:43,699 INFO L138 BoogieDeclarations]: Found implementation of procedure release_dma_lock [2022-11-18 19:44:43,699 INFO L130 BoogieDeclarations]: Found specification of procedure vmalloc [2022-11-18 19:44:43,700 INFO L138 BoogieDeclarations]: Found implementation of procedure vmalloc [2022-11-18 19:44:43,700 INFO L130 BoogieDeclarations]: Found specification of procedure sound_poll [2022-11-18 19:44:43,700 INFO L138 BoogieDeclarations]: Found implementation of procedure sound_poll [2022-11-18 19:44:43,700 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-18 19:44:43,700 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-18 19:44:43,700 INFO L130 BoogieDeclarations]: Found specification of procedure do_sequencer_timer [2022-11-18 19:44:43,701 INFO L138 BoogieDeclarations]: Found implementation of procedure do_sequencer_timer [2022-11-18 19:44:43,701 INFO L130 BoogieDeclarations]: Found specification of procedure disable_dma [2022-11-18 19:44:43,701 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_dma [2022-11-18 19:44:43,701 INFO L130 BoogieDeclarations]: Found specification of procedure tmr2ticks [2022-11-18 19:44:43,701 INFO L138 BoogieDeclarations]: Found implementation of procedure tmr2ticks [2022-11-18 19:44:43,701 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2022-11-18 19:44:43,702 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2022-11-18 19:44:43,702 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-18 19:44:43,702 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-18 19:44:43,702 INFO L130 BoogieDeclarations]: Found specification of procedure request_sound_timer [2022-11-18 19:44:43,702 INFO L138 BoogieDeclarations]: Found implementation of procedure request_sound_timer [2022-11-18 19:44:43,702 INFO L130 BoogieDeclarations]: Found specification of procedure DMAbuf_get_buffer_pointer [2022-11-18 19:44:43,703 INFO L138 BoogieDeclarations]: Found implementation of procedure DMAbuf_get_buffer_pointer [2022-11-18 19:44:43,703 INFO L130 BoogieDeclarations]: Found specification of procedure sound_write [2022-11-18 19:44:43,703 INFO L138 BoogieDeclarations]: Found implementation of procedure sound_write [2022-11-18 19:44:43,704 INFO L130 BoogieDeclarations]: Found specification of procedure play_event [2022-11-18 19:44:43,704 INFO L138 BoogieDeclarations]: Found implementation of procedure play_event [2022-11-18 19:44:43,704 INFO L130 BoogieDeclarations]: Found specification of procedure reorganize_buffers [2022-11-18 19:44:43,704 INFO L138 BoogieDeclarations]: Found implementation of procedure reorganize_buffers [2022-11-18 19:44:43,704 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-18 19:44:43,704 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-18 19:44:43,705 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-18 19:44:43,705 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-18 19:44:43,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:44:43,705 INFO L130 BoogieDeclarations]: Found specification of procedure def_tmr_ioctl [2022-11-18 19:44:43,705 INFO L138 BoogieDeclarations]: Found implementation of procedure def_tmr_ioctl [2022-11-18 19:44:45,021 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:44:45,025 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:44:45,561 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-18 19:44:45,667 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3836: assume 0 != ~tmp___1~3;#res := ~ret~3; [2022-11-18 19:44:45,667 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3836: assume !(0 != ~tmp___1~3);#res := ~ret~3; [2022-11-18 19:44:45,668 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3803: havoc #t~switch115; [2022-11-18 19:44:45,668 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3832: assume #t~switch115; [2022-11-18 19:44:45,668 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3832: assume !#t~switch115;#t~switch115 := true; [2022-11-18 19:44:45,668 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3824: assume 0 != ~tmp___0~8;#res := ~ret~3; [2022-11-18 19:44:45,668 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3824: assume !(0 != ~tmp___0~8);#res := ~ret~3; [2022-11-18 19:44:45,668 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3820: assume #t~switch115; [2022-11-18 19:44:45,669 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3820: assume !#t~switch115;#t~switch115 := #t~switch115 || 16 == ~size; [2022-11-18 19:44:45,669 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3816: assume #t~switch115;#res := ~ret~3; [2022-11-18 19:44:45,669 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3816: assume !#t~switch115;#t~switch115 := #t~switch115 || 10 == ~size; [2022-11-18 19:44:45,669 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1: assume #t~switch115;#res := ~ret~3; [2022-11-18 19:44:45,669 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3812: assume #t~switch115;#res := ~ret~3; [2022-11-18 19:44:45,669 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3812: assume !#t~switch115;#t~switch115 := #t~switch115 || 8 == ~size; [2022-11-18 19:44:45,670 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3845-1: ~tmp___2~2 := #t~ret118;havoc #t~ret118;#res := (if ~tmp___2~2 % 18446744073709551616 % 4294967296 <= 2147483647 then ~tmp___2~2 % 18446744073709551616 % 4294967296 else ~tmp___2~2 % 18446744073709551616 % 4294967296 - 4294967296); [2022-11-18 19:44:45,670 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3845: SUMMARY for call #t~ret118 := copy_user_generic(~dst.base, ~dst.offset, ~src.base, ~src.offset, ~size); srcloc: null [2022-11-18 19:44:45,670 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2: assume !#t~switch115;#t~switch115 := #t~switch115 || 2 == ~size; [2022-11-18 19:44:45,670 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3808: assume #t~switch115;#res := ~ret~3; [2022-11-18 19:44:45,670 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3808: assume !#t~switch115;#t~switch115 := #t~switch115 || 4 == ~size; [2022-11-18 19:44:45,671 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3835-1: assume -9223372036854775808 <= #t~ret117 && #t~ret117 <= 9223372036854775807;~tmp___1~3 := #t~ret117;havoc #t~ret117; [2022-11-18 19:44:45,671 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3835: SUMMARY for call #t~ret117 := ldv__builtin_expect((if 0 != ~ret~3 then 1 else 0), 0); srcloc: null [2022-11-18 19:44:45,671 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3823-1: assume -9223372036854775808 <= #t~ret116 && #t~ret116 <= 9223372036854775807;~tmp___0~8 := #t~ret116;havoc #t~ret116; [2022-11-18 19:44:45,671 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3823: SUMMARY for call #t~ret116 := ldv__builtin_expect((if 0 != ~ret~3 then 1 else 0), 0); srcloc: null [2022-11-18 19:44:45,671 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3844: assume #t~switch115; [2022-11-18 19:44:45,672 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3844: assume !#t~switch115; [2022-11-18 19:44:57,740 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3738: havoc __copy_from_user_#t~switch110#1; [2022-11-18 19:44:57,740 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3744: assume __copy_from_user_#t~switch110#1;__copy_from_user_#res#1 := __copy_from_user_~ret~2#1; [2022-11-18 19:44:57,740 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3744: assume !__copy_from_user_#t~switch110#1;__copy_from_user_#t~switch110#1 := __copy_from_user_#t~switch110#1 || 4 == __copy_from_user_~size#1; [2022-11-18 19:44:57,740 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3749: assume __copy_from_user_#t~switch110#1;__copy_from_user_#res#1 := __copy_from_user_~ret~2#1; [2022-11-18 19:44:57,740 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3749: assume !__copy_from_user_#t~switch110#1;__copy_from_user_#t~switch110#1 := __copy_from_user_#t~switch110#1 || 8 == __copy_from_user_~size#1; [2022-11-18 19:44:57,741 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3754: assume __copy_from_user_#t~switch110#1;__copy_from_user_#res#1 := __copy_from_user_~ret~2#1; [2022-11-18 19:44:57,741 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3754: assume !__copy_from_user_#t~switch110#1;__copy_from_user_#t~switch110#1 := __copy_from_user_#t~switch110#1 || 10 == __copy_from_user_~size#1; [2022-11-18 19:44:57,741 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3759: assume __copy_from_user_#t~switch110#1; [2022-11-18 19:44:57,741 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3759: assume !__copy_from_user_#t~switch110#1;__copy_from_user_#t~switch110#1 := __copy_from_user_#t~switch110#1 || 16 == __copy_from_user_~size#1; [2022-11-18 19:44:57,741 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3763-1: assume -9223372036854775808 <= __copy_from_user_#t~ret111#1 && __copy_from_user_#t~ret111#1 <= 9223372036854775807;__copy_from_user_~tmp___0~7#1 := __copy_from_user_#t~ret111#1;havoc __copy_from_user_#t~ret111#1; [2022-11-18 19:44:57,741 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3763: SUMMARY for call __copy_from_user_#t~ret111#1 := ldv__builtin_expect((if 0 != __copy_from_user_~ret~2#1 then 1 else 0), 0); srcloc: null [2022-11-18 19:44:57,742 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3764: assume 0 != __copy_from_user_~tmp___0~7#1;__copy_from_user_#res#1 := __copy_from_user_~ret~2#1; [2022-11-18 19:44:57,742 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3764: assume !(0 != __copy_from_user_~tmp___0~7#1);__copy_from_user_#res#1 := __copy_from_user_~ret~2#1; [2022-11-18 19:44:57,742 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3772: assume __copy_from_user_#t~switch110#1; [2022-11-18 19:44:57,742 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3772: assume !__copy_from_user_#t~switch110#1;__copy_from_user_#t~switch110#1 := true; [2022-11-18 19:44:57,742 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3776: SUMMARY for call __copy_from_user_#t~ret112#1 := ldv__builtin_expect((if 0 != __copy_from_user_~ret~2#1 then 1 else 0), 0); srcloc: null [2022-11-18 19:44:57,742 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3776-1: assume -9223372036854775808 <= __copy_from_user_#t~ret112#1 && __copy_from_user_#t~ret112#1 <= 9223372036854775807;__copy_from_user_~tmp___1~2#1 := __copy_from_user_#t~ret112#1;havoc __copy_from_user_#t~ret112#1; [2022-11-18 19:44:57,743 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3777: assume 0 != __copy_from_user_~tmp___1~2#1;__copy_from_user_#res#1 := __copy_from_user_~ret~2#1; [2022-11-18 19:44:57,743 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3777: assume !(0 != __copy_from_user_~tmp___1~2#1);__copy_from_user_#res#1 := __copy_from_user_~ret~2#1; [2022-11-18 19:44:57,743 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3785: assume __copy_from_user_#t~switch110#1; [2022-11-18 19:44:57,743 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3785: assume !__copy_from_user_#t~switch110#1; [2022-11-18 19:44:57,743 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3786: SUMMARY for call __copy_from_user_#t~ret113#1 := copy_user_generic(__copy_from_user_~dst#1.base, __copy_from_user_~dst#1.offset, __copy_from_user_~src#1.base, __copy_from_user_~src#1.offset, __copy_from_user_~size#1); srcloc: null [2022-11-18 19:44:57,743 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3786-1: __copy_from_user_~tmp___2~1#1 := __copy_from_user_#t~ret113#1;havoc __copy_from_user_#t~ret113#1;__copy_from_user_#res#1 := (if __copy_from_user_~tmp___2~1#1 % 18446744073709551616 % 4294967296 <= 2147483647 then __copy_from_user_~tmp___2~1#1 % 18446744073709551616 % 4294967296 else __copy_from_user_~tmp___2~1#1 % 18446744073709551616 % 4294967296 - 4294967296); [2022-11-18 19:44:57,744 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##719: assume !__copy_from_user_#t~switch110#1;__copy_from_user_#t~switch110#1 := __copy_from_user_#t~switch110#1 || 2 == __copy_from_user_~size#1; [2022-11-18 19:44:57,744 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##718: assume __copy_from_user_#t~switch110#1;__copy_from_user_#res#1 := __copy_from_user_~ret~2#1; [2022-11-18 19:44:57,916 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:44:57,963 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:44:57,963 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 19:44:57,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:44:57 BoogieIcfgContainer [2022-11-18 19:44:57,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:44:57,973 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:44:57,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:44:57,976 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:44:57,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:44:38" (1/3) ... [2022-11-18 19:44:57,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb6c4d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:44:57, skipping insertion in model container [2022-11-18 19:44:57,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:44:42" (2/3) ... [2022-11-18 19:44:57,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb6c4d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:44:57, skipping insertion in model container [2022-11-18 19:44:57,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:44:57" (3/3) ... [2022-11-18 19:44:57,983 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-torvalds-645ef9e-32_7a-sound--oss--sound.ko-entry_point.cil.out.i [2022-11-18 19:44:58,001 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:44:58,001 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 19:44:58,144 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:44:58,151 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;@66e1406f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:44:58,151 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 19:44:58,166 INFO L276 IsEmpty]: Start isEmpty. Operand has 3825 states, 2931 states have (on average 1.5138178096212898) internal successors, (4437), 3035 states have internal predecessors, (4437), 757 states have call successors, (757), 136 states have call predecessors, (757), 135 states have return successors, (749), 721 states have call predecessors, (749), 749 states have call successors, (749) [2022-11-18 19:44:58,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-18 19:44:58,180 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:44:58,181 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:44:58,182 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:44:58,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:44:58,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1801110918, now seen corresponding path program 1 times [2022-11-18 19:44:58,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:44:58,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229282199] [2022-11-18 19:44:58,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:44:58,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:44:58,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:59,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:44:59,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:59,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 19:44:59,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:59,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:44:59,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:59,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:44:59,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:59,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 19:44:59,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:59,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:44:59,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:59,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 19:44:59,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:59,383 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-18 19:44:59,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:44:59,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229282199] [2022-11-18 19:44:59,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229282199] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:44:59,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:44:59,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:44:59,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122621997] [2022-11-18 19:44:59,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:44:59,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:44:59,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:44:59,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:44:59,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:44:59,449 INFO L87 Difference]: Start difference. First operand has 3825 states, 2931 states have (on average 1.5138178096212898) internal successors, (4437), 3035 states have internal predecessors, (4437), 757 states have call successors, (757), 136 states have call predecessors, (757), 135 states have return successors, (749), 721 states have call predecessors, (749), 749 states have call successors, (749) Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:45:12,006 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 [] [2022-11-18 19:45:14,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:45:14,894 INFO L93 Difference]: Finished difference Result 9266 states and 14527 transitions. [2022-11-18 19:45:14,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:45:14,897 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 56 [2022-11-18 19:45:14,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:45:14,967 INFO L225 Difference]: With dead ends: 9266 [2022-11-18 19:45:14,967 INFO L226 Difference]: Without dead ends: 5419 [2022-11-18 19:45:14,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:45:15,001 INFO L413 NwaCegarLoop]: 5016 mSDtfsCounter, 4121 mSDsluCounter, 6928 mSDsCounter, 0 mSdLazyCounter, 4334 mSolverCounterSat, 1262 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4423 SdHoareTripleChecker+Valid, 11944 SdHoareTripleChecker+Invalid, 5597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1262 IncrementalHoareTripleChecker+Valid, 4334 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:45:15,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4423 Valid, 11944 Invalid, 5597 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1262 Valid, 4334 Invalid, 1 Unknown, 0 Unchecked, 14.7s Time] [2022-11-18 19:45:15,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5419 states. [2022-11-18 19:45:15,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5419 to 4886. [2022-11-18 19:45:15,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4886 states, 3758 states have (on average 1.5058541777541246) internal successors, (5659), 3889 states have internal predecessors, (5659), 935 states have call successors, (935), 193 states have call predecessors, (935), 192 states have return successors, (931), 887 states have call predecessors, (931), 931 states have call successors, (931) [2022-11-18 19:45:15,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4886 states to 4886 states and 7525 transitions. [2022-11-18 19:45:15,416 INFO L78 Accepts]: Start accepts. Automaton has 4886 states and 7525 transitions. Word has length 56 [2022-11-18 19:45:15,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:45:15,418 INFO L495 AbstractCegarLoop]: Abstraction has 4886 states and 7525 transitions. [2022-11-18 19:45:15,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:45:15,418 INFO L276 IsEmpty]: Start isEmpty. Operand 4886 states and 7525 transitions. [2022-11-18 19:45:15,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 19:45:15,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:45:15,436 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:45:15,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:45:15,437 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:45:15,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:45:15,438 INFO L85 PathProgramCache]: Analyzing trace with hash 519669864, now seen corresponding path program 1 times [2022-11-18 19:45:15,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:45:15,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266074472] [2022-11-18 19:45:15,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:45:15,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:45:15,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:15,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:45:15,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:15,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 19:45:15,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:15,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:45:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:16,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:45:16,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:16,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 19:45:16,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:16,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:45:16,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:16,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 19:45:16,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:16,053 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-18 19:45:16,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:45:16,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266074472] [2022-11-18 19:45:16,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266074472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:45:16,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:45:16,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:45:16,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653969987] [2022-11-18 19:45:16,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:45:16,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:45:16,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:45:16,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:45:16,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:45:16,060 INFO L87 Difference]: Start difference. First operand 4886 states and 7525 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:45:17,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:45:26,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:45:29,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:45:29,279 INFO L93 Difference]: Finished difference Result 10282 states and 15971 transitions. [2022-11-18 19:45:29,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:45:29,279 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-11-18 19:45:29,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:45:29,337 INFO L225 Difference]: With dead ends: 10282 [2022-11-18 19:45:29,337 INFO L226 Difference]: Without dead ends: 5411 [2022-11-18 19:45:29,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:45:29,362 INFO L413 NwaCegarLoop]: 4842 mSDtfsCounter, 7128 mSDsluCounter, 2446 mSDsCounter, 0 mSdLazyCounter, 2486 mSolverCounterSat, 1541 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7610 SdHoareTripleChecker+Valid, 7288 SdHoareTripleChecker+Invalid, 4028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1541 IncrementalHoareTripleChecker+Valid, 2486 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:45:29,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7610 Valid, 7288 Invalid, 4028 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1541 Valid, 2486 Invalid, 1 Unknown, 0 Unchecked, 12.7s Time] [2022-11-18 19:45:29,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5411 states. [2022-11-18 19:45:29,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5411 to 4886. [2022-11-18 19:45:29,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4886 states, 3758 states have (on average 1.5053219797764767) internal successors, (5657), 3889 states have internal predecessors, (5657), 935 states have call successors, (935), 193 states have call predecessors, (935), 192 states have return successors, (931), 887 states have call predecessors, (931), 931 states have call successors, (931) [2022-11-18 19:45:29,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4886 states to 4886 states and 7523 transitions. [2022-11-18 19:45:29,725 INFO L78 Accepts]: Start accepts. Automaton has 4886 states and 7523 transitions. Word has length 65 [2022-11-18 19:45:29,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:45:29,727 INFO L495 AbstractCegarLoop]: Abstraction has 4886 states and 7523 transitions. [2022-11-18 19:45:29,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:45:29,727 INFO L276 IsEmpty]: Start isEmpty. Operand 4886 states and 7523 transitions. [2022-11-18 19:45:29,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 19:45:29,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:45:29,730 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:45:29,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:45:29,730 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:45:29,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:45:29,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1068678038, now seen corresponding path program 1 times [2022-11-18 19:45:29,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:45:29,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360294272] [2022-11-18 19:45:29,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:45:29,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:45:29,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:30,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:45:30,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:30,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 19:45:30,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:30,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:45:30,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:30,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:45:30,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:30,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 19:45:30,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:30,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:45:30,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:30,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 19:45:30,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:30,214 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-18 19:45:30,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:45:30,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360294272] [2022-11-18 19:45:30,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360294272] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:45:30,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:45:30,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:45:30,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285850646] [2022-11-18 19:45:30,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:45:30,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:45:30,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:45:30,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:45:30,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:45:30,217 INFO L87 Difference]: Start difference. First operand 4886 states and 7523 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:45:31,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:45:32,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:45:41,161 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 [] [2022-11-18 19:45:43,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:45:43,320 INFO L93 Difference]: Finished difference Result 5426 states and 8478 transitions. [2022-11-18 19:45:43,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:45:43,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-11-18 19:45:43,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:45:43,351 INFO L225 Difference]: With dead ends: 5426 [2022-11-18 19:45:43,351 INFO L226 Difference]: Without dead ends: 5423 [2022-11-18 19:45:43,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:45:43,355 INFO L413 NwaCegarLoop]: 4838 mSDtfsCounter, 7114 mSDsluCounter, 2469 mSDsCounter, 0 mSdLazyCounter, 2498 mSolverCounterSat, 1544 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7598 SdHoareTripleChecker+Valid, 7307 SdHoareTripleChecker+Invalid, 4043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1544 IncrementalHoareTripleChecker+Valid, 2498 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:45:43,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7598 Valid, 7307 Invalid, 4043 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1544 Valid, 2498 Invalid, 1 Unknown, 0 Unchecked, 12.7s Time] [2022-11-18 19:45:43,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5423 states. [2022-11-18 19:45:43,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5423 to 4896. [2022-11-18 19:45:43,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4896 states, 3766 states have (on average 1.5042485395645246) internal successors, (5665), 3896 states have internal predecessors, (5665), 935 states have call successors, (935), 195 states have call predecessors, (935), 194 states have return successors, (932), 888 states have call predecessors, (932), 932 states have call successors, (932) [2022-11-18 19:45:43,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4896 states to 4896 states and 7532 transitions. [2022-11-18 19:45:43,605 INFO L78 Accepts]: Start accepts. Automaton has 4896 states and 7532 transitions. Word has length 65 [2022-11-18 19:45:43,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:45:43,606 INFO L495 AbstractCegarLoop]: Abstraction has 4896 states and 7532 transitions. [2022-11-18 19:45:43,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:45:43,606 INFO L276 IsEmpty]: Start isEmpty. Operand 4896 states and 7532 transitions. [2022-11-18 19:45:43,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-18 19:45:43,609 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:45:43,610 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:45:43,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:45:43,610 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:45:43,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:45:43,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1229508727, now seen corresponding path program 1 times [2022-11-18 19:45:43,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:45:43,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791393645] [2022-11-18 19:45:43,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:45:43,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:45:43,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:43,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:45:44,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:44,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 19:45:44,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:44,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:45:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:44,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:45:44,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:44,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 19:45:44,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:44,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:45:44,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:44,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 19:45:44,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:44,059 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-18 19:45:44,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:45:44,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791393645] [2022-11-18 19:45:44,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791393645] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:45:44,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:45:44,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:45:44,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582448171] [2022-11-18 19:45:44,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:45:44,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:45:44,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:45:44,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:45:44,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:45:44,062 INFO L87 Difference]: Start difference. First operand 4896 states and 7532 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:45:45,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:45:46,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:45:56,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:46:00,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:46:00,572 INFO L93 Difference]: Finished difference Result 8522 states and 13186 transitions. [2022-11-18 19:46:00,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:46:00,573 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-11-18 19:46:00,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:46:00,632 INFO L225 Difference]: With dead ends: 8522 [2022-11-18 19:46:00,632 INFO L226 Difference]: Without dead ends: 8434 [2022-11-18 19:46:00,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:46:00,641 INFO L413 NwaCegarLoop]: 5323 mSDtfsCounter, 4908 mSDsluCounter, 7008 mSDsCounter, 0 mSdLazyCounter, 4665 mSolverCounterSat, 1536 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5261 SdHoareTripleChecker+Valid, 12331 SdHoareTripleChecker+Invalid, 6201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1536 IncrementalHoareTripleChecker+Valid, 4665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:46:00,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5261 Valid, 12331 Invalid, 6201 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1536 Valid, 4665 Invalid, 0 Unknown, 0 Unchecked, 15.9s Time] [2022-11-18 19:46:00,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8434 states. [2022-11-18 19:46:01,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8434 to 7517. [2022-11-18 19:46:01,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7517 states, 5763 states have (on average 1.4993926774249522) internal successors, (8641), 5993 states have internal predecessors, (8641), 1423 states have call successors, (1423), 333 states have call predecessors, (1423), 330 states have return successors, (1422), 1324 states have call predecessors, (1422), 1420 states have call successors, (1422) [2022-11-18 19:46:01,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7517 states to 7517 states and 11486 transitions. [2022-11-18 19:46:01,085 INFO L78 Accepts]: Start accepts. Automaton has 7517 states and 11486 transitions. Word has length 66 [2022-11-18 19:46:01,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:46:01,086 INFO L495 AbstractCegarLoop]: Abstraction has 7517 states and 11486 transitions. [2022-11-18 19:46:01,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:46:01,087 INFO L276 IsEmpty]: Start isEmpty. Operand 7517 states and 11486 transitions. [2022-11-18 19:46:01,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-18 19:46:01,097 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:46:01,098 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:01,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:46:01,098 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:46:01,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:01,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1277070206, now seen corresponding path program 1 times [2022-11-18 19:46:01,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:01,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621086879] [2022-11-18 19:46:01,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:01,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:01,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:01,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:46:01,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:01,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 19:46:01,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:01,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:46:01,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:01,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:46:01,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:01,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 19:46:01,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:01,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:46:01,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:01,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 19:46:01,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:01,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 19:46:01,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:01,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-18 19:46:01,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:01,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-18 19:46:01,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:01,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-18 19:46:01,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:01,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 19:46:01,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:01,778 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-18 19:46:01,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:01,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621086879] [2022-11-18 19:46:01,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621086879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:01,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:01,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:46:01,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953861711] [2022-11-18 19:46:01,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:01,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:46:01,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:01,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:46:01,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:46:01,782 INFO L87 Difference]: Start difference. First operand 7517 states and 11486 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-18 19:46:03,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:46:04,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:46:05,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:46:23,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:46:25,502 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 [] [2022-11-18 19:46:31,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:46:31,888 INFO L93 Difference]: Finished difference Result 20075 states and 30820 transitions. [2022-11-18 19:46:31,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:46:31,889 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 110 [2022-11-18 19:46:31,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:46:31,961 INFO L225 Difference]: With dead ends: 20075 [2022-11-18 19:46:31,961 INFO L226 Difference]: Without dead ends: 12584 [2022-11-18 19:46:31,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:46:31,993 INFO L413 NwaCegarLoop]: 3026 mSDtfsCounter, 9825 mSDsluCounter, 5883 mSDsCounter, 0 mSdLazyCounter, 11089 mSolverCounterSat, 4030 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10307 SdHoareTripleChecker+Valid, 8909 SdHoareTripleChecker+Invalid, 15120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4030 IncrementalHoareTripleChecker+Valid, 11089 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:46:31,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10307 Valid, 8909 Invalid, 15120 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4030 Valid, 11089 Invalid, 1 Unknown, 0 Unchecked, 29.0s Time] [2022-11-18 19:46:32,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12584 states. [2022-11-18 19:46:32,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12584 to 11095. [2022-11-18 19:46:32,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11095 states, 8443 states have (on average 1.4871491176122231) internal successors, (12556), 8801 states have internal predecessors, (12556), 2133 states have call successors, (2133), 521 states have call predecessors, (2133), 518 states have return successors, (2134), 1976 states have call predecessors, (2134), 2130 states have call successors, (2134) [2022-11-18 19:46:32,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11095 states to 11095 states and 16823 transitions. [2022-11-18 19:46:32,665 INFO L78 Accepts]: Start accepts. Automaton has 11095 states and 16823 transitions. Word has length 110 [2022-11-18 19:46:32,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:46:32,666 INFO L495 AbstractCegarLoop]: Abstraction has 11095 states and 16823 transitions. [2022-11-18 19:46:32,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-18 19:46:32,666 INFO L276 IsEmpty]: Start isEmpty. Operand 11095 states and 16823 transitions. [2022-11-18 19:46:32,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-18 19:46:32,679 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:46:32,679 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 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] [2022-11-18 19:46:32,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:46:32,680 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:46:32,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:32,680 INFO L85 PathProgramCache]: Analyzing trace with hash 984625771, now seen corresponding path program 1 times [2022-11-18 19:46:32,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:32,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19522047] [2022-11-18 19:46:32,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:32,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:32,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:34,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:46:34,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:34,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 19:46:34,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:34,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:46:34,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:34,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:46:34,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:34,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 19:46:34,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:34,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:46:34,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:34,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 19:46:34,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:34,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 19:46:34,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:34,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-18 19:46:34,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:34,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-18 19:46:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:34,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-18 19:46:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:34,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-18 19:46:34,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:34,554 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-11-18 19:46:34,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:34,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19522047] [2022-11-18 19:46:34,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19522047] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:46:34,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012739840] [2022-11-18 19:46:34,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:34,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:46:34,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc93e3d-0487-41cb-b648-9b389fa0b4f0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:46:34,559 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc93e3d-0487-41cb-b648-9b389fa0b4f0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:46:34,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc93e3d-0487-41cb-b648-9b389fa0b4f0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:46:36,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:36,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 4476 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:46:36,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:36,428 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-18 19:46:36,428 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:46:36,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012739840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:36,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:46:36,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2022-11-18 19:46:36,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10731022] [2022-11-18 19:46:36,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:36,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:46:36,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:36,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:46:36,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:46:36,431 INFO L87 Difference]: Start difference. First operand 11095 states and 16823 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-18 19:46:37,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:46:38,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:46:38,284 INFO L93 Difference]: Finished difference Result 22194 states and 33652 transitions. [2022-11-18 19:46:38,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:46:38,285 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 112 [2022-11-18 19:46:38,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:46:38,342 INFO L225 Difference]: With dead ends: 22194 [2022-11-18 19:46:38,430 INFO L226 Difference]: Without dead ends: 11098 [2022-11-18 19:46:38,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:46:38,469 INFO L413 NwaCegarLoop]: 5899 mSDtfsCounter, 23 mSDsluCounter, 23590 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 29489 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:46:38,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 29489 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-18 19:46:38,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11098 states. [2022-11-18 19:46:38,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11098 to 11082. [2022-11-18 19:46:39,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11082 states, 8436 states have (on average 1.486842105263158) internal successors, (12543), 8791 states have internal predecessors, (12543), 2130 states have call successors, (2130), 518 states have call predecessors, (2130), 515 states have return successors, (2131), 1971 states have call predecessors, (2131), 2127 states have call successors, (2131) [2022-11-18 19:46:39,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11082 states to 11082 states and 16804 transitions. [2022-11-18 19:46:39,060 INFO L78 Accepts]: Start accepts. Automaton has 11082 states and 16804 transitions. Word has length 112 [2022-11-18 19:46:39,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:46:39,061 INFO L495 AbstractCegarLoop]: Abstraction has 11082 states and 16804 transitions. [2022-11-18 19:46:39,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-18 19:46:39,062 INFO L276 IsEmpty]: Start isEmpty. Operand 11082 states and 16804 transitions. [2022-11-18 19:46:39,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-18 19:46:39,070 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:46:39,070 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 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] [2022-11-18 19:46:39,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc93e3d-0487-41cb-b648-9b389fa0b4f0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 19:46:39,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc93e3d-0487-41cb-b648-9b389fa0b4f0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 19:46:39,284 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:46:39,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:39,284 INFO L85 PathProgramCache]: Analyzing trace with hash -929703493, now seen corresponding path program 1 times [2022-11-18 19:46:39,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:39,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934444675] [2022-11-18 19:46:39,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:39,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:39,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:39,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:46:39,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:39,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 19:46:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:39,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:46:39,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:39,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:46:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:39,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 19:46:39,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:39,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:46:39,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:39,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 19:46:39,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:39,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 19:46:39,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:39,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 19:46:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:39,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 19:46:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:39,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-18 19:46:39,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:39,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-18 19:46:39,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:39,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 19:46:39,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:39,927 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-11-18 19:46:39,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:39,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934444675] [2022-11-18 19:46:39,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934444675] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:39,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:39,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:46:39,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718408407] [2022-11-18 19:46:39,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:39,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:46:39,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:39,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:46:39,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:46:39,929 INFO L87 Difference]: Start difference. First operand 11082 states and 16804 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 19:46:41,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:46:42,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:47:04,436 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 [] [2022-11-18 19:47:09,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:47:09,271 INFO L93 Difference]: Finished difference Result 23761 states and 36336 transitions. [2022-11-18 19:47:09,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:47:09,272 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 117 [2022-11-18 19:47:09,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:47:09,348 INFO L225 Difference]: With dead ends: 23761 [2022-11-18 19:47:09,349 INFO L226 Difference]: Without dead ends: 12705 [2022-11-18 19:47:09,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:47:09,391 INFO L413 NwaCegarLoop]: 2904 mSDtfsCounter, 7969 mSDsluCounter, 5622 mSDsCounter, 0 mSdLazyCounter, 12785 mSolverCounterSat, 2570 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8259 SdHoareTripleChecker+Valid, 8526 SdHoareTripleChecker+Invalid, 15356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 2570 IncrementalHoareTripleChecker+Valid, 12785 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:47:09,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8259 Valid, 8526 Invalid, 15356 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [2570 Valid, 12785 Invalid, 1 Unknown, 0 Unchecked, 28.1s Time] [2022-11-18 19:47:09,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12705 states. [2022-11-18 19:47:10,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12705 to 11082. [2022-11-18 19:47:10,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11082 states, 8436 states have (on average 1.486130867709815) internal successors, (12537), 8791 states have internal predecessors, (12537), 2130 states have call successors, (2130), 518 states have call predecessors, (2130), 515 states have return successors, (2131), 1971 states have call predecessors, (2131), 2127 states have call successors, (2131) [2022-11-18 19:47:10,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11082 states to 11082 states and 16798 transitions. [2022-11-18 19:47:10,188 INFO L78 Accepts]: Start accepts. Automaton has 11082 states and 16798 transitions. Word has length 117 [2022-11-18 19:47:10,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:47:10,189 INFO L495 AbstractCegarLoop]: Abstraction has 11082 states and 16798 transitions. [2022-11-18 19:47:10,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 19:47:10,189 INFO L276 IsEmpty]: Start isEmpty. Operand 11082 states and 16798 transitions. [2022-11-18 19:47:10,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-18 19:47:10,199 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:47:10,199 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 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] [2022-11-18 19:47:10,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 19:47:10,200 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:47:10,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:10,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1986380683, now seen corresponding path program 1 times [2022-11-18 19:47:10,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:10,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956462002] [2022-11-18 19:47:10,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:10,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:10,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:10,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:47:10,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:10,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 19:47:10,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:10,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:47:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:10,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:47:10,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:10,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 19:47:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:10,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:47:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:10,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 19:47:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:10,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 19:47:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:10,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-18 19:47:10,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:10,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 19:47:10,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:10,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-18 19:47:10,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:11,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-18 19:47:11,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:11,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-18 19:47:11,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:11,018 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-11-18 19:47:11,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:11,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956462002] [2022-11-18 19:47:11,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956462002] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:47:11,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:47:11,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:47:11,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553888832] [2022-11-18 19:47:11,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:47:11,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:47:11,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:11,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:47:11,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:47:11,022 INFO L87 Difference]: Start difference. First operand 11082 states and 16798 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 19:47:12,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:47:14,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:47:28,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:47:33,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:47:33,918 INFO L93 Difference]: Finished difference Result 23623 states and 36081 transitions. [2022-11-18 19:47:33,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:47:33,919 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 120 [2022-11-18 19:47:33,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:47:33,997 INFO L225 Difference]: With dead ends: 23623 [2022-11-18 19:47:33,997 INFO L226 Difference]: Without dead ends: 12567 [2022-11-18 19:47:34,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:47:34,036 INFO L413 NwaCegarLoop]: 2679 mSDtfsCounter, 9366 mSDsluCounter, 3641 mSDsCounter, 0 mSdLazyCounter, 5805 mSolverCounterSat, 3457 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9769 SdHoareTripleChecker+Valid, 6320 SdHoareTripleChecker+Invalid, 9263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3457 IncrementalHoareTripleChecker+Valid, 5805 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:47:34,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9769 Valid, 6320 Invalid, 9263 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3457 Valid, 5805 Invalid, 1 Unknown, 0 Unchecked, 21.7s Time] [2022-11-18 19:47:34,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12567 states. [2022-11-18 19:47:34,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12567 to 11085. [2022-11-18 19:47:34,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11085 states, 8438 states have (on average 1.4853045745437308) internal successors, (12533), 8793 states have internal predecessors, (12533), 2130 states have call successors, (2130), 519 states have call predecessors, (2130), 516 states have return successors, (2131), 1971 states have call predecessors, (2131), 2127 states have call successors, (2131) [2022-11-18 19:47:34,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11085 states to 11085 states and 16794 transitions. [2022-11-18 19:47:34,870 INFO L78 Accepts]: Start accepts. Automaton has 11085 states and 16794 transitions. Word has length 120 [2022-11-18 19:47:34,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:47:34,871 INFO L495 AbstractCegarLoop]: Abstraction has 11085 states and 16794 transitions. [2022-11-18 19:47:34,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 19:47:34,871 INFO L276 IsEmpty]: Start isEmpty. Operand 11085 states and 16794 transitions. [2022-11-18 19:47:34,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-18 19:47:34,881 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:47:34,882 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 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] [2022-11-18 19:47:34,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 19:47:34,882 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:47:34,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:34,883 INFO L85 PathProgramCache]: Analyzing trace with hash -599595273, now seen corresponding path program 1 times [2022-11-18 19:47:34,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:34,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917346408] [2022-11-18 19:47:34,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:34,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:35,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:36,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:47:36,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:36,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 19:47:36,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:36,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:47:36,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:36,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:47:36,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:36,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 19:47:36,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:36,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:47:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:36,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 19:47:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:36,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 19:47:36,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:36,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-18 19:47:36,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:36,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 19:47:36,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:36,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-18 19:47:36,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:36,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-18 19:47:36,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:36,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-18 19:47:36,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:36,790 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-11-18 19:47:36,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:36,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917346408] [2022-11-18 19:47:36,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917346408] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:47:36,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465242123] [2022-11-18 19:47:36,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:36,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:47:36,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc93e3d-0487-41cb-b648-9b389fa0b4f0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:47:36,793 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc93e3d-0487-41cb-b648-9b389fa0b4f0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:47:36,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc93e3d-0487-41cb-b648-9b389fa0b4f0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:47:38,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:38,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 4508 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:47:38,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:47:38,905 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-11-18 19:47:38,905 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:47:38,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465242123] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:47:38,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:47:38,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-18 19:47:38,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7262152] [2022-11-18 19:47:38,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:47:38,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:47:38,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:38,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:47:38,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:47:38,909 INFO L87 Difference]: Start difference. First operand 11085 states and 16794 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 19:47:40,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:47:40,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:47:40,725 INFO L93 Difference]: Finished difference Result 22143 states and 33555 transitions. [2022-11-18 19:47:40,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:47:40,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 120 [2022-11-18 19:47:40,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:47:40,777 INFO L225 Difference]: With dead ends: 22143 [2022-11-18 19:47:40,777 INFO L226 Difference]: Without dead ends: 11084 [2022-11-18 19:47:40,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:47:40,818 INFO L413 NwaCegarLoop]: 7254 mSDtfsCounter, 5802 mSDsluCounter, 2451 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5802 SdHoareTripleChecker+Valid, 9705 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:47:40,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5802 Valid, 9705 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-18 19:47:40,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11084 states. [2022-11-18 19:47:41,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11084 to 11075. [2022-11-18 19:47:41,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11075 states, 8433 states have (on average 1.4851179888533144) internal successors, (12524), 8785 states have internal predecessors, (12524), 2127 states have call successors, (2127), 518 states have call predecessors, (2127), 514 states have return successors, (2117), 1970 states have call predecessors, (2117), 2117 states have call successors, (2117) [2022-11-18 19:47:41,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11075 states to 11075 states and 16768 transitions. [2022-11-18 19:47:41,584 INFO L78 Accepts]: Start accepts. Automaton has 11075 states and 16768 transitions. Word has length 120 [2022-11-18 19:47:41,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:47:41,585 INFO L495 AbstractCegarLoop]: Abstraction has 11075 states and 16768 transitions. [2022-11-18 19:47:41,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 19:47:41,585 INFO L276 IsEmpty]: Start isEmpty. Operand 11075 states and 16768 transitions. [2022-11-18 19:47:41,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-18 19:47:41,627 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:47:41,627 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:41,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc93e3d-0487-41cb-b648-9b389fa0b4f0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:47:41,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc93e3d-0487-41cb-b648-9b389fa0b4f0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:47:41,844 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:47:41,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:41,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1424453881, now seen corresponding path program 1 times [2022-11-18 19:47:41,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:41,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058010222] [2022-11-18 19:47:41,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:41,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:42,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:42,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:47:42,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:42,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 19:47:42,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:42,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:47:42,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:42,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:47:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:42,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 19:47:42,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:42,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:47:42,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:42,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 19:47:42,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:42,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 19:47:42,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:42,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-18 19:47:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:42,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 19:47:42,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:42,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-18 19:47:42,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:42,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-18 19:47:42,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:42,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-18 19:47:42,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:42,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-18 19:47:42,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:42,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-11-18 19:47:42,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:42,531 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-18 19:47:42,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:42,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058010222] [2022-11-18 19:47:42,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058010222] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:47:42,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:47:42,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:47:42,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454720409] [2022-11-18 19:47:42,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:47:42,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:47:42,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:42,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:47:42,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:47:42,535 INFO L87 Difference]: Start difference. First operand 11075 states and 16768 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (18), 4 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-18 19:47:44,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:47:46,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:47:47,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:48:21,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:48:23,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:48:26,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:48:31,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:48:33,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:48:35,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:48:36,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:48:45,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:48:45,966 INFO L93 Difference]: Finished difference Result 28275 states and 43130 transitions. [2022-11-18 19:48:45,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:48:45,966 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (18), 4 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 160 [2022-11-18 19:48:45,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:48:46,059 INFO L225 Difference]: With dead ends: 28275 [2022-11-18 19:48:46,059 INFO L226 Difference]: Without dead ends: 17226 [2022-11-18 19:48:46,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:48:46,096 INFO L413 NwaCegarLoop]: 3893 mSDtfsCounter, 8098 mSDsluCounter, 10831 mSDsCounter, 0 mSdLazyCounter, 20346 mSolverCounterSat, 3659 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8520 SdHoareTripleChecker+Valid, 14724 SdHoareTripleChecker+Invalid, 24009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 3659 IncrementalHoareTripleChecker+Valid, 20346 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:48:46,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8520 Valid, 14724 Invalid, 24009 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [3659 Valid, 20346 Invalid, 4 Unknown, 0 Unchecked, 61.2s Time] [2022-11-18 19:48:46,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17226 states. [2022-11-18 19:48:46,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17226 to 11077. [2022-11-18 19:48:46,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11077 states, 8435 states have (on average 1.4848844101956136) internal successors, (12525), 8787 states have internal predecessors, (12525), 2127 states have call successors, (2127), 518 states have call predecessors, (2127), 514 states have return successors, (2117), 1970 states have call predecessors, (2117), 2117 states have call successors, (2117) [2022-11-18 19:48:47,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11077 states to 11077 states and 16769 transitions. [2022-11-18 19:48:47,020 INFO L78 Accepts]: Start accepts. Automaton has 11077 states and 16769 transitions. Word has length 160 [2022-11-18 19:48:47,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:48:47,021 INFO L495 AbstractCegarLoop]: Abstraction has 11077 states and 16769 transitions. [2022-11-18 19:48:47,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (18), 4 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-18 19:48:47,022 INFO L276 IsEmpty]: Start isEmpty. Operand 11077 states and 16769 transitions. [2022-11-18 19:48:47,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-11-18 19:48:47,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:48:47,065 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:47,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 19:48:47,066 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:48:47,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:47,067 INFO L85 PathProgramCache]: Analyzing trace with hash -364113520, now seen corresponding path program 1 times [2022-11-18 19:48:47,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:47,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639189443] [2022-11-18 19:48:47,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:47,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:47,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:47,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:48:47,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:47,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 19:48:47,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:47,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:48:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:47,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:48:47,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:47,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 19:48:47,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:47,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:48:47,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:47,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 19:48:47,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:47,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 19:48:47,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:47,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-18 19:48:47,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:47,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 19:48:47,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:47,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-18 19:48:47,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:47,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 19:48:47,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:47,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-18 19:48:47,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:47,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-18 19:48:47,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:47,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-18 19:48:47,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:47,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-18 19:48:47,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:47,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-18 19:48:47,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:47,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-18 19:48:47,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:47,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-11-18 19:48:47,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:47,681 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-11-18 19:48:47,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:47,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639189443] [2022-11-18 19:48:47,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639189443] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:47,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:48:47,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:48:47,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217791686] [2022-11-18 19:48:47,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:47,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:48:47,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:47,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:48:47,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:48:47,685 INFO L87 Difference]: Start difference. First operand 11077 states and 16769 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-18 19:48:49,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:48:50,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:49:08,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:49:09,846 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 [] [2022-11-18 19:49:16,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:16,292 INFO L93 Difference]: Finished difference Result 23613 states and 36020 transitions. [2022-11-18 19:49:16,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:49:16,293 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 189 [2022-11-18 19:49:16,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:16,356 INFO L225 Difference]: With dead ends: 23613 [2022-11-18 19:49:16,356 INFO L226 Difference]: Without dead ends: 12562 [2022-11-18 19:49:16,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:49:16,393 INFO L413 NwaCegarLoop]: 2682 mSDtfsCounter, 4566 mSDsluCounter, 5980 mSDsCounter, 0 mSdLazyCounter, 9495 mSolverCounterSat, 1884 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4858 SdHoareTripleChecker+Valid, 8662 SdHoareTripleChecker+Invalid, 11380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1884 IncrementalHoareTripleChecker+Valid, 9495 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:16,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4858 Valid, 8662 Invalid, 11380 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1884 Valid, 9495 Invalid, 1 Unknown, 0 Unchecked, 27.1s Time] [2022-11-18 19:49:16,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12562 states. [2022-11-18 19:49:17,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12562 to 11078. [2022-11-18 19:49:17,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11078 states, 8436 states have (on average 1.4848269321953533) internal successors, (12526), 8788 states have internal predecessors, (12526), 2127 states have call successors, (2127), 518 states have call predecessors, (2127), 514 states have return successors, (2117), 1970 states have call predecessors, (2117), 2117 states have call successors, (2117) [2022-11-18 19:49:17,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11078 states to 11078 states and 16770 transitions. [2022-11-18 19:49:17,372 INFO L78 Accepts]: Start accepts. Automaton has 11078 states and 16770 transitions. Word has length 189 [2022-11-18 19:49:17,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:17,372 INFO L495 AbstractCegarLoop]: Abstraction has 11078 states and 16770 transitions. [2022-11-18 19:49:17,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-18 19:49:17,373 INFO L276 IsEmpty]: Start isEmpty. Operand 11078 states and 16770 transitions. [2022-11-18 19:49:17,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-11-18 19:49:17,410 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:17,410 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:17,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 19:49:17,411 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:49:17,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:17,411 INFO L85 PathProgramCache]: Analyzing trace with hash -974646965, now seen corresponding path program 1 times [2022-11-18 19:49:17,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:17,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100271637] [2022-11-18 19:49:17,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:17,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:17,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:49:17,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:17,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 19:49:17,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:17,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:49:17,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:17,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:49:17,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:17,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 19:49:17,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:17,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:49:17,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:17,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 19:49:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:17,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 19:49:17,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:17,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-18 19:49:17,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:18,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 19:49:18,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:18,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-18 19:49:18,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:18,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 19:49:18,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:18,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-18 19:49:18,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:18,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 19:49:18,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:18,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-18 19:49:18,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:18,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-18 19:49:18,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:18,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-18 19:49:18,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:18,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-18 19:49:18,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:18,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-18 19:49:18,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:18,090 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-11-18 19:49:18,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:18,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100271637] [2022-11-18 19:49:18,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100271637] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:18,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:18,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:49:18,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736139679] [2022-11-18 19:49:18,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:18,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:49:18,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:18,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:49:18,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:49:18,093 INFO L87 Difference]: Start difference. First operand 11078 states and 16770 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-18 19:49:19,419 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 [] [2022-11-18 19:49:20,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:49:22,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:49:40,311 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 [] [2022-11-18 19:50:00,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:00,680 INFO L93 Difference]: Finished difference Result 22392 states and 34153 transitions. [2022-11-18 19:50:00,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:50:00,681 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 191 [2022-11-18 19:50:00,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:00,728 INFO L225 Difference]: With dead ends: 22392 [2022-11-18 19:50:00,728 INFO L226 Difference]: Without dead ends: 11340 [2022-11-18 19:50:00,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:50:00,753 INFO L413 NwaCegarLoop]: 3334 mSDtfsCounter, 8805 mSDsluCounter, 5540 mSDsCounter, 0 mSdLazyCounter, 12478 mSolverCounterSat, 3726 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9358 SdHoareTripleChecker+Valid, 8874 SdHoareTripleChecker+Invalid, 16205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3726 IncrementalHoareTripleChecker+Valid, 12478 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:00,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9358 Valid, 8874 Invalid, 16205 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3726 Valid, 12478 Invalid, 1 Unknown, 0 Unchecked, 40.8s Time] [2022-11-18 19:50:00,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11340 states. [2022-11-18 19:50:01,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11340 to 10003. [2022-11-18 19:50:01,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10003 states, 7605 states have (on average 1.4803418803418804) internal successors, (11258), 7920 states have internal predecessors, (11258), 1941 states have call successors, (1941), 460 states have call predecessors, (1941), 456 states have return successors, (1931), 1801 states have call predecessors, (1931), 1931 states have call successors, (1931) [2022-11-18 19:50:01,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10003 states to 10003 states and 15130 transitions. [2022-11-18 19:50:01,809 INFO L78 Accepts]: Start accepts. Automaton has 10003 states and 15130 transitions. Word has length 191 [2022-11-18 19:50:01,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:01,810 INFO L495 AbstractCegarLoop]: Abstraction has 10003 states and 15130 transitions. [2022-11-18 19:50:01,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-18 19:50:01,810 INFO L276 IsEmpty]: Start isEmpty. Operand 10003 states and 15130 transitions. [2022-11-18 19:50:01,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-18 19:50:01,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:01,845 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:01,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 19:50:01,846 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:50:01,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:01,847 INFO L85 PathProgramCache]: Analyzing trace with hash -2070888760, now seen corresponding path program 1 times [2022-11-18 19:50:01,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:01,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441638004] [2022-11-18 19:50:01,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:01,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:02,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:02,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:50:02,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:02,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 19:50:02,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:02,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:50:02,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:02,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:50:02,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:02,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 19:50:02,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:02,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:50:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:02,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 19:50:02,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:02,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 19:50:02,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:02,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-18 19:50:02,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:02,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 19:50:02,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:02,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-18 19:50:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:02,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 19:50:02,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:02,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-18 19:50:02,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:02,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 19:50:02,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:02,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-18 19:50:02,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:02,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-18 19:50:02,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:02,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-18 19:50:02,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:02,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-18 19:50:02,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:02,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-11-18 19:50:02,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:02,721 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-11-18 19:50:02,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:02,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441638004] [2022-11-18 19:50:02,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441638004] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:50:02,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:50:02,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:50:02,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197143598] [2022-11-18 19:50:02,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:50:02,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:50:02,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:02,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:50:02,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:50:02,724 INFO L87 Difference]: Start difference. First operand 10003 states and 15130 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-18 19:50:04,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:50:05,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:50:23,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:50:31,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:31,917 INFO L93 Difference]: Finished difference Result 21702 states and 33301 transitions. [2022-11-18 19:50:31,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:50:31,917 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 190 [2022-11-18 19:50:31,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:31,983 INFO L225 Difference]: With dead ends: 21702 [2022-11-18 19:50:31,983 INFO L226 Difference]: Without dead ends: 12756 [2022-11-18 19:50:32,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:50:32,008 INFO L413 NwaCegarLoop]: 3966 mSDtfsCounter, 6194 mSDsluCounter, 7188 mSDsCounter, 0 mSdLazyCounter, 9956 mSolverCounterSat, 1912 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6812 SdHoareTripleChecker+Valid, 11154 SdHoareTripleChecker+Invalid, 11869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1912 IncrementalHoareTripleChecker+Valid, 9956 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:32,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6812 Valid, 11154 Invalid, 11869 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1912 Valid, 9956 Invalid, 1 Unknown, 0 Unchecked, 27.8s Time] [2022-11-18 19:50:32,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12756 states. [2022-11-18 19:50:32,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12756 to 10009. [2022-11-18 19:50:33,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10009 states, 7611 states have (on average 1.4799632111417684) internal successors, (11264), 7926 states have internal predecessors, (11264), 1941 states have call successors, (1941), 460 states have call predecessors, (1941), 456 states have return successors, (1931), 1801 states have call predecessors, (1931), 1931 states have call successors, (1931) [2022-11-18 19:50:33,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10009 states to 10009 states and 15136 transitions. [2022-11-18 19:50:33,051 INFO L78 Accepts]: Start accepts. Automaton has 10009 states and 15136 transitions. Word has length 190 [2022-11-18 19:50:33,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:33,052 INFO L495 AbstractCegarLoop]: Abstraction has 10009 states and 15136 transitions. [2022-11-18 19:50:33,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-18 19:50:33,053 INFO L276 IsEmpty]: Start isEmpty. Operand 10009 states and 15136 transitions. [2022-11-18 19:50:33,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-18 19:50:33,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:33,073 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:33,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 19:50:33,073 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:50:33,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:33,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1714605446, now seen corresponding path program 1 times [2022-11-18 19:50:33,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:33,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838267110] [2022-11-18 19:50:33,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:33,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:33,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:33,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:50:33,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:33,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 19:50:33,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:33,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:50:33,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:33,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:50:33,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:33,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 19:50:33,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:33,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:50:33,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:33,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 19:50:33,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:33,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 19:50:33,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:33,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-18 19:50:33,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:33,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 19:50:33,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:33,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-18 19:50:33,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:33,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 19:50:33,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:33,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-18 19:50:33,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:33,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 19:50:33,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:33,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-18 19:50:33,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:33,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-18 19:50:33,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:33,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-18 19:50:33,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:33,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-18 19:50:33,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:33,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-11-18 19:50:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:33,962 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-11-18 19:50:33,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:33,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838267110] [2022-11-18 19:50:33,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838267110] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:50:33,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:50:33,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:50:33,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449784855] [2022-11-18 19:50:33,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:50:33,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:50:33,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:33,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:50:33,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:50:33,968 INFO L87 Difference]: Start difference. First operand 10009 states and 15136 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-18 19:50:35,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:50:37,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:50:54,625 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 [] [2022-11-18 19:51:02,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:02,382 INFO L93 Difference]: Finished difference Result 21346 states and 32534 transitions. [2022-11-18 19:51:02,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:51:02,383 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 190 [2022-11-18 19:51:02,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:02,420 INFO L225 Difference]: With dead ends: 21346 [2022-11-18 19:51:02,420 INFO L226 Difference]: Without dead ends: 11363 [2022-11-18 19:51:02,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:51:02,440 INFO L413 NwaCegarLoop]: 2678 mSDtfsCounter, 4567 mSDsluCounter, 5973 mSDsCounter, 0 mSdLazyCounter, 9519 mSolverCounterSat, 1883 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4858 SdHoareTripleChecker+Valid, 8651 SdHoareTripleChecker+Invalid, 11403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1883 IncrementalHoareTripleChecker+Valid, 9519 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:02,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4858 Valid, 8651 Invalid, 11403 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1883 Valid, 9519 Invalid, 1 Unknown, 0 Unchecked, 27.0s Time] [2022-11-18 19:51:02,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11363 states. [2022-11-18 19:51:03,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11363 to 10014. [2022-11-18 19:51:03,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10014 states, 7616 states have (on average 1.4796481092436975) internal successors, (11269), 7931 states have internal predecessors, (11269), 1941 states have call successors, (1941), 460 states have call predecessors, (1941), 456 states have return successors, (1931), 1801 states have call predecessors, (1931), 1931 states have call successors, (1931) [2022-11-18 19:51:03,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10014 states to 10014 states and 15141 transitions. [2022-11-18 19:51:03,250 INFO L78 Accepts]: Start accepts. Automaton has 10014 states and 15141 transitions. Word has length 190 [2022-11-18 19:51:03,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:03,251 INFO L495 AbstractCegarLoop]: Abstraction has 10014 states and 15141 transitions. [2022-11-18 19:51:03,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-18 19:51:03,251 INFO L276 IsEmpty]: Start isEmpty. Operand 10014 states and 15141 transitions. [2022-11-18 19:51:03,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-11-18 19:51:03,270 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:03,270 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:03,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 19:51:03,271 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:03,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:03,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1130042849, now seen corresponding path program 1 times [2022-11-18 19:51:03,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:03,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516999409] [2022-11-18 19:51:03,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:03,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:03,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:04,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:51:04,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:04,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 19:51:04,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:04,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:51:04,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:04,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:51:04,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:04,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 19:51:04,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:04,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:51:04,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:04,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 19:51:04,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:04,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 19:51:04,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:04,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 19:51:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:04,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-18 19:51:04,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:04,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-18 19:51:04,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:04,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-18 19:51:04,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:04,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-18 19:51:04,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:04,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-18 19:51:04,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:04,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-18 19:51:04,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:04,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-18 19:51:04,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:04,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-18 19:51:04,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:04,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-18 19:51:04,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:04,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-11-18 19:51:04,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:04,226 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-11-18 19:51:04,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:04,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516999409] [2022-11-18 19:51:04,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516999409] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:51:04,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999641259] [2022-11-18 19:51:04,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:04,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:51:04,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc93e3d-0487-41cb-b648-9b389fa0b4f0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:04,235 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc93e3d-0487-41cb-b648-9b389fa0b4f0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:51:04,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc93e3d-0487-41cb-b648-9b389fa0b4f0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:51:06,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:06,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 4690 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:51:06,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:06,560 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-18 19:51:06,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:51:06,725 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-11-18 19:51:06,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999641259] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:51:06,726 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:51:06,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2022-11-18 19:51:06,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290707936] [2022-11-18 19:51:06,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:51:06,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:51:06,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:06,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:51:06,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:51:06,729 INFO L87 Difference]: Start difference. First operand 10014 states and 15141 transitions. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 7 states have internal predecessors, (138), 2 states have call successors, (43), 4 states have call predecessors, (43), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-18 19:51:08,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:51:09,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:51:41,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:51:43,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:51:46,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:51:48,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:51:50,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:51:51,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:52:05,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:52:05,613 INFO L93 Difference]: Finished difference Result 21386 states and 32584 transitions. [2022-11-18 19:52:05,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:52:05,614 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 7 states have internal predecessors, (138), 2 states have call successors, (43), 4 states have call predecessors, (43), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 194 [2022-11-18 19:52:05,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:52:05,653 INFO L225 Difference]: With dead ends: 21386 [2022-11-18 19:52:05,653 INFO L226 Difference]: Without dead ends: 11398 [2022-11-18 19:52:05,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:52:05,674 INFO L413 NwaCegarLoop]: 2683 mSDtfsCounter, 4578 mSDsluCounter, 15318 mSDsCounter, 0 mSdLazyCounter, 24407 mSolverCounterSat, 1886 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4870 SdHoareTripleChecker+Valid, 18001 SdHoareTripleChecker+Invalid, 26297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 1886 IncrementalHoareTripleChecker+Valid, 24407 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:52:05,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4870 Valid, 18001 Invalid, 26297 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [1886 Valid, 24407 Invalid, 4 Unknown, 0 Unchecked, 57.0s Time] [2022-11-18 19:52:05,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11398 states. [2022-11-18 19:52:06,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11398 to 10049. [2022-11-18 19:52:06,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10049 states, 7651 states have (on average 1.4787609462815319) internal successors, (11314), 7966 states have internal predecessors, (11314), 1941 states have call successors, (1941), 460 states have call predecessors, (1941), 456 states have return successors, (1931), 1801 states have call predecessors, (1931), 1931 states have call successors, (1931) [2022-11-18 19:52:06,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10049 states to 10049 states and 15186 transitions. [2022-11-18 19:52:06,434 INFO L78 Accepts]: Start accepts. Automaton has 10049 states and 15186 transitions. Word has length 194 [2022-11-18 19:52:06,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:52:06,435 INFO L495 AbstractCegarLoop]: Abstraction has 10049 states and 15186 transitions. [2022-11-18 19:52:06,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 7 states have internal predecessors, (138), 2 states have call successors, (43), 4 states have call predecessors, (43), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-18 19:52:06,435 INFO L276 IsEmpty]: Start isEmpty. Operand 10049 states and 15186 transitions. [2022-11-18 19:52:06,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-11-18 19:52:06,461 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:52:06,462 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:52:06,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc93e3d-0487-41cb-b648-9b389fa0b4f0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:52:06,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc93e3d-0487-41cb-b648-9b389fa0b4f0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 19:52:06,663 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:52:06,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:06,663 INFO L85 PathProgramCache]: Analyzing trace with hash 487920184, now seen corresponding path program 2 times [2022-11-18 19:52:06,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:52:06,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042655776] [2022-11-18 19:52:06,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:06,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:52:07,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:16,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:52:16,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:16,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 19:52:16,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:16,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:52:16,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:16,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:52:16,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:16,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 19:52:16,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:17,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:52:17,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:17,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 19:52:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:17,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 19:52:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:17,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 19:52:17,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:17,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 19:52:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:17,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-18 19:52:17,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:17,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 19:52:17,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:17,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-18 19:52:17,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:17,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-18 19:52:17,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:17,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-18 19:52:17,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:17,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-11-18 19:52:17,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:17,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-18 19:52:17,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:17,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-18 19:52:17,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:17,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-11-18 19:52:17,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:17,120 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-11-18 19:52:17,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:17,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042655776] [2022-11-18 19:52:17,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042655776] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:52:17,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:52:17,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:52:17,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305511954] [2022-11-18 19:52:17,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:52:17,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:52:17,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:17,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:52:17,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:52:17,125 INFO L87 Difference]: Start difference. First operand 10049 states and 15186 transitions. Second operand has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 5 states have internal predecessors, (114), 2 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-18 19:52:18,828 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 [] [2022-11-18 19:52:20,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:52:22,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:52:24,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:53:01,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:53:20,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:20,748 INFO L93 Difference]: Finished difference Result 29592 states and 45413 transitions. [2022-11-18 19:53:20,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:53:20,748 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 5 states have internal predecessors, (114), 2 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 198 [2022-11-18 19:53:20,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:20,856 INFO L225 Difference]: With dead ends: 29592 [2022-11-18 19:53:20,856 INFO L226 Difference]: Without dead ends: 19569 [2022-11-18 19:53:20,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:53:20,894 INFO L413 NwaCegarLoop]: 3021 mSDtfsCounter, 10901 mSDsluCounter, 10093 mSDsCounter, 0 mSdLazyCounter, 22795 mSolverCounterSat, 4093 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11370 SdHoareTripleChecker+Valid, 13114 SdHoareTripleChecker+Invalid, 26889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 4093 IncrementalHoareTripleChecker+Valid, 22795 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:20,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11370 Valid, 13114 Invalid, 26889 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [4093 Valid, 22795 Invalid, 1 Unknown, 0 Unchecked, 60.8s Time] [2022-11-18 19:53:20,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19569 states. [2022-11-18 19:53:22,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19569 to 18631. [2022-11-18 19:53:22,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18631 states, 14272 states have (on average 1.4866872197309418) internal successors, (21218), 14926 states have internal predecessors, (21218), 3393 states have call successors, (3393), 855 states have call predecessors, (3393), 965 states have return successors, (4201), 3125 states have call predecessors, (4201), 3381 states have call successors, (4201) [2022-11-18 19:53:22,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18631 states to 18631 states and 28812 transitions. [2022-11-18 19:53:22,494 INFO L78 Accepts]: Start accepts. Automaton has 18631 states and 28812 transitions. Word has length 198 [2022-11-18 19:53:22,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:22,494 INFO L495 AbstractCegarLoop]: Abstraction has 18631 states and 28812 transitions. [2022-11-18 19:53:22,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 5 states have internal predecessors, (114), 2 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-18 19:53:22,494 INFO L276 IsEmpty]: Start isEmpty. Operand 18631 states and 28812 transitions. [2022-11-18 19:53:22,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-11-18 19:53:22,552 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:22,552 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:22,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 19:53:22,553 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:53:22,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:22,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1956005681, now seen corresponding path program 1 times [2022-11-18 19:53:22,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:22,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889007662] [2022-11-18 19:53:22,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:22,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:24,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:31,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 19:53:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:31,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 19:53:31,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:31,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 19:53:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:31,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 19:53:31,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:31,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 19:53:31,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:31,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:53:31,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:31,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 19:53:31,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:31,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 19:53:31,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:31,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-18 19:53:31,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:31,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-18 19:53:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:31,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-18 19:53:31,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:31,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-18 19:53:31,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:31,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-18 19:53:31,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:31,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-18 19:53:31,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:31,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-18 19:53:31,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:31,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-18 19:53:31,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:31,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-18 19:53:31,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:31,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-11-18 19:53:31,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:31,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-11-18 19:53:31,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:31,675 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-11-18 19:53:31,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:31,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889007662] [2022-11-18 19:53:31,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889007662] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:31,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322429833] [2022-11-18 19:53:31,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:31,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:31,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc93e3d-0487-41cb-b648-9b389fa0b4f0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:31,683 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc93e3d-0487-41cb-b648-9b389fa0b4f0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:31,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc93e3d-0487-41cb-b648-9b389fa0b4f0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:53:33,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:33,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 4707 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-18 19:53:33,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:34,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:53:34,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:53:34,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:53:34,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:53:34,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:53:34,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:53:34,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:53:34,432 INFO L217 Elim1Store]: Index analysis took 375 ms [2022-11-18 19:53:35,649 INFO L321 Elim1Store]: treesize reduction 339, result has 20.2 percent of original size [2022-11-18 19:53:35,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 114 [2022-11-18 19:53:35,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:53:35,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:53:35,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:53:35,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:53:35,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:53:35,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:53:35,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:53:36,094 INFO L321 Elim1Store]: treesize reduction 339, result has 20.2 percent of original size [2022-11-18 19:53:36,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 114 [2022-11-18 19:54:31,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2022-11-18 19:54:31,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2022-11-18 19:54:31,521 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 57 proven. 3 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-18 19:54:31,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:54:32,296 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-11-18 19:54:32,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322429833] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:54:32,296 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:54:32,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 8] total 18 [2022-11-18 19:54:32,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063731152] [2022-11-18 19:54:32,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:54:32,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 19:54:32,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:32,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 19:54:32,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:54:32,300 INFO L87 Difference]: Start difference. First operand 18631 states and 28812 transitions. Second operand has 18 states, 18 states have (on average 11.666666666666666) internal successors, (210), 16 states have internal predecessors, (210), 4 states have call successors, (53), 5 states have call predecessors, (53), 3 states have return successors, (46), 4 states have call predecessors, (46), 4 states have call successors, (46) [2022-11-18 19:54:33,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:54:35,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:54:36,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:54:38,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:54:40,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:54:41,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:54:43,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:54:44,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:55:59,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:56:01,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:56:03,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:56:05,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:56:07,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:56:09,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:56:10,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:56:12,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:56:14,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:56:15,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:56:17,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:56:24,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []