./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--gpu--drm--ast--ast.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 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_93200b1b-83fb-4572-9c59-84ae7def17f3/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93200b1b-83fb-4572-9c59-84ae7def17f3/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_93200b1b-83fb-4572-9c59-84ae7def17f3/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93200b1b-83fb-4572-9c59-84ae7def17f3/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--gpu--drm--ast--ast.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93200b1b-83fb-4572-9c59-84ae7def17f3/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_93200b1b-83fb-4572-9c59-84ae7def17f3/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 e37e45521ffb127b83b9baab443e42b7c078cf8a8451cb2a1813ac325e01717d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 18:47:34,145 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:47:34,146 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:47:34,177 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:47:34,181 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:47:34,185 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:47:34,188 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:47:34,198 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:47:34,200 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:47:34,203 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:47:34,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:47:34,208 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:47:34,208 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:47:34,215 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:47:34,217 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:47:34,219 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:47:34,221 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:47:34,223 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:47:34,224 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:47:34,226 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:47:34,233 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:47:34,234 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:47:34,235 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:47:34,236 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:47:34,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:47:34,240 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:47:34,240 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:47:34,241 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:47:34,241 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:47:34,242 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:47:34,243 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:47:34,243 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:47:34,244 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:47:34,245 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:47:34,246 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:47:34,251 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:47:34,252 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:47:34,253 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:47:34,253 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:47:34,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:47:34,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:47:34,255 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93200b1b-83fb-4572-9c59-84ae7def17f3/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-18 18:47:34,294 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:47:34,294 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:47:34,295 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:47:34,295 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:47:34,296 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:47:34,296 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:47:34,296 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:47:34,297 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:47:34,297 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:47:34,297 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:47:34,297 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:47:34,297 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:47:34,298 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:47:34,298 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:47:34,298 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:47:34,298 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:47:34,298 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:47:34,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:47:34,299 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:47:34,299 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:47:34,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:47:34,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:47:34,299 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:47:34,300 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:47:34,300 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:47:34,300 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:47:34,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:47:34,300 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:47:34,300 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:47:34,301 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:47:34,301 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_93200b1b-83fb-4572-9c59-84ae7def17f3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93200b1b-83fb-4572-9c59-84ae7def17f3/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e37e45521ffb127b83b9baab443e42b7c078cf8a8451cb2a1813ac325e01717d [2022-11-18 18:47:34,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:47:34,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:47:34,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:47:34,654 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:47:34,654 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:47:34,656 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93200b1b-83fb-4572-9c59-84ae7def17f3/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--gpu--drm--ast--ast.ko-main.cil.out.i [2022-11-18 18:47:34,722 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93200b1b-83fb-4572-9c59-84ae7def17f3/bin/uautomizer-TMbwUNV5ro/data/4250634d8/a9305fe93649440494b0823efd6e6821/FLAG4709c81ac [2022-11-18 18:47:35,751 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:47:35,752 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93200b1b-83fb-4572-9c59-84ae7def17f3/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--gpu--drm--ast--ast.ko-main.cil.out.i [2022-11-18 18:47:35,839 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93200b1b-83fb-4572-9c59-84ae7def17f3/bin/uautomizer-TMbwUNV5ro/data/4250634d8/a9305fe93649440494b0823efd6e6821/FLAG4709c81ac [2022-11-18 18:47:36,134 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93200b1b-83fb-4572-9c59-84ae7def17f3/bin/uautomizer-TMbwUNV5ro/data/4250634d8/a9305fe93649440494b0823efd6e6821 [2022-11-18 18:47:36,139 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:47:36,141 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:47:36,145 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:47:36,146 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:47:36,150 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:47:36,151 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:47:36" (1/1) ... [2022-11-18 18:47:36,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13355d1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:36, skipping insertion in model container [2022-11-18 18:47:36,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:47:36" (1/1) ... [2022-11-18 18:47:36,159 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:47:36,318 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:47:39,631 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_93200b1b-83fb-4572-9c59-84ae7def17f3/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--gpu--drm--ast--ast.ko-main.cil.out.i[353005,353018] [2022-11-18 18:47:39,876 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:47:39,947 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:47:40,463 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_93200b1b-83fb-4572-9c59-84ae7def17f3/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--gpu--drm--ast--ast.ko-main.cil.out.i[353005,353018] [2022-11-18 18:47:40,486 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:47:40,851 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:47:40,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:40 WrapperNode [2022-11-18 18:47:40,853 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:47:40,854 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:47:40,855 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:47:40,855 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:47:40,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:40" (1/1) ... [2022-11-18 18:47:41,043 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:40" (1/1) ... [2022-11-18 18:47:41,427 INFO L138 Inliner]: procedures = 511, calls = 3849, calls flagged for inlining = 265, calls inlined = 264, statements flattened = 9911 [2022-11-18 18:47:41,427 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:47:41,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:47:41,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:47:41,429 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:47:41,440 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:40" (1/1) ... [2022-11-18 18:47:41,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:40" (1/1) ... [2022-11-18 18:47:41,532 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:40" (1/1) ... [2022-11-18 18:47:41,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:40" (1/1) ... [2022-11-18 18:47:41,711 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:40" (1/1) ... [2022-11-18 18:47:41,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:40" (1/1) ... [2022-11-18 18:47:41,897 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:40" (1/1) ... [2022-11-18 18:47:41,914 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:40" (1/1) ... [2022-11-18 18:47:41,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:47:41,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:47:41,981 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:47:41,981 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:47:41,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:40" (1/1) ... [2022-11-18 18:47:41,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:47:42,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93200b1b-83fb-4572-9c59-84ae7def17f3/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:47:42,019 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93200b1b-83fb-4572-9c59-84ae7def17f3/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:47:42,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93200b1b-83fb-4572-9c59-84ae7def17f3/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:47:42,069 INFO L130 BoogieDeclarations]: Found specification of procedure drm_global_item_ref [2022-11-18 18:47:42,069 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_global_item_ref [2022-11-18 18:47:42,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-18 18:47:42,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-18 18:47:42,070 INFO L130 BoogieDeclarations]: Found specification of procedure ast_drm_freeze [2022-11-18 18:47:42,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_drm_freeze [2022-11-18 18:47:42,070 INFO L130 BoogieDeclarations]: Found specification of procedure drm_helper_probe_single_connector_modes [2022-11-18 18:47:42,070 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_helper_probe_single_connector_modes [2022-11-18 18:47:42,071 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_dpms [2022-11-18 18:47:42,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_dpms [2022-11-18 18:47:42,071 INFO L130 BoogieDeclarations]: Found specification of procedure ast_bo_pin [2022-11-18 18:47:42,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_bo_pin [2022-11-18 18:47:42,071 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_struct_mutex_of_drm_device [2022-11-18 18:47:42,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_struct_mutex_of_drm_device [2022-11-18 18:47:42,072 INFO L130 BoogieDeclarations]: Found specification of procedure ast_read32 [2022-11-18 18:47:42,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_read32 [2022-11-18 18:47:42,072 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-18 18:47:42,073 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-18 18:47:42,073 INFO L130 BoogieDeclarations]: Found specification of procedure cbr_dll2 [2022-11-18 18:47:42,073 INFO L138 BoogieDeclarations]: Found implementation of procedure cbr_dll2 [2022-11-18 18:47:42,074 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_mode_fixup [2022-11-18 18:47:42,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_mode_fixup [2022-11-18 18:47:42,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:47:42,074 INFO L130 BoogieDeclarations]: Found specification of procedure moutdwm [2022-11-18 18:47:42,074 INFO L138 BoogieDeclarations]: Found implementation of procedure moutdwm [2022-11-18 18:47:42,074 INFO L130 BoogieDeclarations]: Found specification of procedure ast_drm_thaw [2022-11-18 18:47:42,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_drm_thaw [2022-11-18 18:47:42,075 INFO L130 BoogieDeclarations]: Found specification of procedure ast_dirty_update [2022-11-18 18:47:42,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_dirty_update [2022-11-18 18:47:42,075 INFO L130 BoogieDeclarations]: Found specification of procedure ast_set_index_reg_mask [2022-11-18 18:47:42,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_set_index_reg_mask [2022-11-18 18:47:42,076 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_kmap [2022-11-18 18:47:42,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_bo_kmap [2022-11-18 18:47:42,076 INFO L130 BoogieDeclarations]: Found specification of procedure ast_ttm_placement [2022-11-18 18:47:42,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_ttm_placement [2022-11-18 18:47:42,076 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_load_lut [2022-11-18 18:47:42,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_load_lut [2022-11-18 18:47:42,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-18 18:47:42,077 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_kunmap [2022-11-18 18:47:42,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_bo_kunmap [2022-11-18 18:47:42,078 INFO L130 BoogieDeclarations]: Found specification of procedure drm_global_item_unref [2022-11-18 18:47:42,078 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_global_item_unref [2022-11-18 18:47:42,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-18 18:47:42,078 INFO L130 BoogieDeclarations]: Found specification of procedure ast_user_framebuffer_destroy [2022-11-18 18:47:42,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_user_framebuffer_destroy [2022-11-18 18:47:42,079 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_disable [2022-11-18 18:47:42,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_disable [2022-11-18 18:47:42,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:47:42,080 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_mode_set_base [2022-11-18 18:47:42,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_mode_set_base [2022-11-18 18:47:42,080 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2022-11-18 18:47:42,081 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2022-11-18 18:47:42,081 INFO L130 BoogieDeclarations]: Found specification of procedure mindwm [2022-11-18 18:47:42,081 INFO L138 BoogieDeclarations]: Found implementation of procedure mindwm [2022-11-18 18:47:42,081 INFO L130 BoogieDeclarations]: Found specification of procedure ast_io_read8 [2022-11-18 18:47:42,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_io_read8 [2022-11-18 18:47:42,082 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-11-18 18:47:42,083 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-11-18 18:47:42,083 INFO L130 BoogieDeclarations]: Found specification of procedure ast_user_framebuffer_create_handle [2022-11-18 18:47:42,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_user_framebuffer_create_handle [2022-11-18 18:47:42,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 18:47:42,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:47:42,084 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_gamma_set [2022-11-18 18:47:42,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_gamma_set [2022-11-18 18:47:42,084 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-18 18:47:42,084 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-18 18:47:42,084 INFO L130 BoogieDeclarations]: Found specification of procedure ast_fbdev_set_suspend [2022-11-18 18:47:42,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_fbdev_set_suspend [2022-11-18 18:47:42,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 18:47:42,085 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-18 18:47:42,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-18 18:47:42,086 INFO L130 BoogieDeclarations]: Found specification of procedure ast_framebuffer_init [2022-11-18 18:47:42,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_framebuffer_init [2022-11-18 18:47:42,086 INFO L130 BoogieDeclarations]: Found specification of procedure ast_cursor_set [2022-11-18 18:47:42,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_cursor_set [2022-11-18 18:47:42,086 INFO L130 BoogieDeclarations]: Found specification of procedure ast_open_key [2022-11-18 18:47:42,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_open_key [2022-11-18 18:47:42,087 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_validate [2022-11-18 18:47:42,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_bo_validate [2022-11-18 18:47:42,087 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_test_burst2 [2022-11-18 18:47:42,087 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_test_burst2 [2022-11-18 18:47:42,087 INFO L130 BoogieDeclarations]: Found specification of procedure ast_bo_unreserve [2022-11-18 18:47:42,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_bo_unreserve [2022-11-18 18:47:42,088 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-18 18:47:42,088 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-18 18:47:42,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:47:42,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:47:42,088 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-11-18 18:47:42,089 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-11-18 18:47:42,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-18 18:47:42,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-18 18:47:42,090 INFO L130 BoogieDeclarations]: Found specification of procedure ast_connector_detect [2022-11-18 18:47:42,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_connector_detect [2022-11-18 18:47:42,090 INFO L130 BoogieDeclarations]: Found specification of procedure ast_encoder_prepare [2022-11-18 18:47:42,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_encoder_prepare [2022-11-18 18:47:42,091 INFO L130 BoogieDeclarations]: Found specification of procedure ast_get_index_reg_mask [2022-11-18 18:47:42,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_get_index_reg_mask [2022-11-18 18:47:42,092 INFO L130 BoogieDeclarations]: Found specification of procedure ast_gem_create [2022-11-18 18:47:42,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_gem_create [2022-11-18 18:47:42,092 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_prepare [2022-11-18 18:47:42,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_prepare [2022-11-18 18:47:42,093 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-18 18:47:42,093 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-18 18:47:42,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-18 18:47:42,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-18 18:47:42,093 INFO L130 BoogieDeclarations]: Found specification of procedure ast_bo_reserve [2022-11-18 18:47:42,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_bo_reserve [2022-11-18 18:47:42,094 INFO L130 BoogieDeclarations]: Found specification of procedure drm_gem_object_unreference_unlocked [2022-11-18 18:47:42,094 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_gem_object_unreference_unlocked [2022-11-18 18:47:42,094 INFO L130 BoogieDeclarations]: Found specification of procedure ast_mmap [2022-11-18 18:47:42,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_mmap [2022-11-18 18:47:42,095 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-18 18:47:42,095 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-18 18:47:42,095 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-18 18:47:42,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-18 18:47:42,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:47:42,095 INFO L130 BoogieDeclarations]: Found specification of procedure drm_gem_object_free [2022-11-18 18:47:42,096 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_global_release [2022-11-18 18:47:42,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_struct_mutex_of_drm_device [2022-11-18 18:47:42,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_struct_mutex_of_drm_device [2022-11-18 18:47:42,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 18:47:42,101 INFO L130 BoogieDeclarations]: Found specification of procedure ast_connector_destroy [2022-11-18 18:47:42,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_connector_destroy [2022-11-18 18:47:42,101 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_commit [2022-11-18 18:47:42,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_commit [2022-11-18 18:47:42,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-18 18:47:42,105 INFO L130 BoogieDeclarations]: Found specification of procedure ast_pm_resume [2022-11-18 18:47:42,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_pm_resume [2022-11-18 18:47:42,109 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-18 18:47:42,109 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-18 18:47:42,110 INFO L130 BoogieDeclarations]: Found specification of procedure ast_io_write8 [2022-11-18 18:47:42,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_io_write8 [2022-11-18 18:47:42,110 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_kmap_obj_virtual [2022-11-18 18:47:42,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_kmap_obj_virtual [2022-11-18 18:47:42,110 INFO L130 BoogieDeclarations]: Found specification of procedure ast_encoder_destroy [2022-11-18 18:47:42,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_encoder_destroy [2022-11-18 18:47:42,111 INFO L130 BoogieDeclarations]: Found specification of procedure ast_bo_gpu_offset [2022-11-18 18:47:42,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_bo_gpu_offset [2022-11-18 18:47:42,111 INFO L130 BoogieDeclarations]: Found specification of procedure ast_write32 [2022-11-18 18:47:42,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_write32 [2022-11-18 18:47:42,111 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_reset [2022-11-18 18:47:42,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_reset [2022-11-18 18:47:42,112 INFO L130 BoogieDeclarations]: Found specification of procedure ast_gem_free_object [2022-11-18 18:47:42,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_gem_free_object [2022-11-18 18:47:42,112 INFO L130 BoogieDeclarations]: Found specification of procedure drm_gem_object_unreference_unlocked___0 [2022-11-18 18:47:42,112 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_gem_object_unreference_unlocked___0 [2022-11-18 18:47:42,112 INFO L130 BoogieDeclarations]: Found specification of procedure ast_ttm_backend_destroy [2022-11-18 18:47:42,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_ttm_backend_destroy [2022-11-18 18:47:42,113 INFO L130 BoogieDeclarations]: Found specification of procedure ast_pci_remove [2022-11-18 18:47:42,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_pci_remove [2022-11-18 18:47:42,113 INFO L130 BoogieDeclarations]: Found specification of procedure drm_helper_connector_dpms [2022-11-18 18:47:42,113 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_helper_connector_dpms [2022-11-18 18:47:42,113 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_mode_set [2022-11-18 18:47:42,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_mode_set [2022-11-18 18:47:42,113 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_test_single2 [2022-11-18 18:47:42,114 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_test_single2 [2022-11-18 18:47:42,114 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-18 18:47:42,114 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-18 18:47:42,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:47:42,114 INFO L130 BoogieDeclarations]: Found specification of procedure ast_set_index_reg [2022-11-18 18:47:42,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_set_index_reg [2022-11-18 18:47:42,115 INFO L130 BoogieDeclarations]: Found specification of procedure cbrdlli_ast2150 [2022-11-18 18:47:42,115 INFO L138 BoogieDeclarations]: Found implementation of procedure cbrdlli_ast2150 [2022-11-18 18:47:42,115 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-18 18:47:42,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-18 18:47:42,115 INFO L130 BoogieDeclarations]: Found specification of procedure drm_fasync [2022-11-18 18:47:42,115 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_fasync [2022-11-18 18:47:42,116 INFO L130 BoogieDeclarations]: Found specification of procedure drm_framebuffer_cleanup [2022-11-18 18:47:42,116 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_framebuffer_cleanup [2022-11-18 18:47:42,116 INFO L130 BoogieDeclarations]: Found specification of procedure ast_encoder_commit [2022-11-18 18:47:42,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_encoder_commit [2022-11-18 18:47:42,116 INFO L130 BoogieDeclarations]: Found specification of procedure drm_crtc_helper_set_config [2022-11-18 18:47:42,116 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_crtc_helper_set_config [2022-11-18 18:47:42,116 INFO L130 BoogieDeclarations]: Found specification of procedure console_lock [2022-11-18 18:47:42,117 INFO L138 BoogieDeclarations]: Found implementation of procedure console_lock [2022-11-18 18:47:42,117 INFO L130 BoogieDeclarations]: Found specification of procedure ast_cursor_move [2022-11-18 18:47:42,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_cursor_move [2022-11-18 18:47:42,117 INFO L130 BoogieDeclarations]: Found specification of procedure console_unlock [2022-11-18 18:47:42,117 INFO L138 BoogieDeclarations]: Found implementation of procedure console_unlock [2022-11-18 18:47:42,117 INFO L130 BoogieDeclarations]: Found specification of procedure drm_poll [2022-11-18 18:47:42,118 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_poll [2022-11-18 18:47:42,118 INFO L130 BoogieDeclarations]: Found specification of procedure drm_mode_connector_update_edid_property [2022-11-18 18:47:42,118 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_mode_connector_update_edid_property [2022-11-18 18:47:42,118 INFO L130 BoogieDeclarations]: Found specification of procedure cbr_scan2 [2022-11-18 18:47:42,118 INFO L138 BoogieDeclarations]: Found implementation of procedure cbr_scan2 [2022-11-18 18:47:42,118 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-18 18:47:42,119 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-18 18:47:42,119 INFO L130 BoogieDeclarations]: Found specification of procedure ast_ttm_tt_unpopulate [2022-11-18 18:47:42,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_ttm_tt_unpopulate [2022-11-18 18:47:42,119 INFO L130 BoogieDeclarations]: Found specification of procedure drm_gem_object_lookup [2022-11-18 18:47:42,119 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_gem_object_lookup [2022-11-18 18:47:42,119 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_destroy [2022-11-18 18:47:42,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_destroy [2022-11-18 18:47:42,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:47:43,430 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:47:43,433 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:48:01,295 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ast_gem_init_object_returnLabel#1: main_#t~ret94#1 := ast_gem_init_object_#res#1;assume { :end_inline_ast_gem_init_object } true;assume -2147483648 <= main_#t~ret94#1 && main_#t~ret94#1 <= 2147483647;havoc main_#t~ret94#1;~ldv_state_variable_13~0 := 1; [2022-11-18 18:48:01,439 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:48:01,468 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:48:01,468 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 18:48:01,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:48:01 BoogieIcfgContainer [2022-11-18 18:48:01,486 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:48:01,489 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:48:01,489 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:48:01,493 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:48:01,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:47:36" (1/3) ... [2022-11-18 18:48:01,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e9dc154 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:48:01, skipping insertion in model container [2022-11-18 18:48:01,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:40" (2/3) ... [2022-11-18 18:48:01,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e9dc154 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:48:01, skipping insertion in model container [2022-11-18 18:48:01,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:48:01" (3/3) ... [2022-11-18 18:48:01,499 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--gpu--drm--ast--ast.ko-main.cil.out.i [2022-11-18 18:48:01,519 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:48:01,519 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 18:48:01,621 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:48:01,628 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;@48167173, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:48:01,629 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 18:48:01,641 INFO L276 IsEmpty]: Start isEmpty. Operand has 2689 states, 1952 states have (on average 1.4656762295081966) internal successors, (2861), 2010 states have internal predecessors, (2861), 647 states have call successors, (647), 88 states have call predecessors, (647), 88 states have return successors, (647), 627 states have call predecessors, (647), 647 states have call successors, (647) [2022-11-18 18:48:01,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 18:48:01,653 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:48:01,654 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:01,655 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:48:01,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:01,661 INFO L85 PathProgramCache]: Analyzing trace with hash -463412850, now seen corresponding path program 1 times [2022-11-18 18:48:01,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:01,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265879582] [2022-11-18 18:48:01,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:01,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:02,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:02,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:02,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:02,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265879582] [2022-11-18 18:48:02,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265879582] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:02,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:02,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:48:02,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768276324] [2022-11-18 18:48:02,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:02,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:48:02,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:02,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:48:02,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:48:02,851 INFO L87 Difference]: Start difference. First operand has 2689 states, 1952 states have (on average 1.4656762295081966) internal successors, (2861), 2010 states have internal predecessors, (2861), 647 states have call successors, (647), 88 states have call predecessors, (647), 88 states have return successors, (647), 627 states have call predecessors, (647), 647 states have call successors, (647) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:03,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:48:03,476 INFO L93 Difference]: Finished difference Result 8030 states and 12544 transitions. [2022-11-18 18:48:03,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:48:03,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 18:48:03,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:48:03,541 INFO L225 Difference]: With dead ends: 8030 [2022-11-18 18:48:03,541 INFO L226 Difference]: Without dead ends: 5338 [2022-11-18 18:48:03,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:48:03,573 INFO L413 NwaCegarLoop]: 4777 mSDtfsCounter, 4088 mSDsluCounter, 4112 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4088 SdHoareTripleChecker+Valid, 8889 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:48:03,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4088 Valid, 8889 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:48:03,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5338 states. [2022-11-18 18:48:03,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5338 to 5332. [2022-11-18 18:48:04,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5332 states, 3874 states have (on average 1.458957150232318) internal successors, (5652), 3976 states have internal predecessors, (5652), 1283 states have call successors, (1283), 175 states have call predecessors, (1283), 174 states have return successors, (1272), 1232 states have call predecessors, (1272), 1272 states have call successors, (1272) [2022-11-18 18:48:04,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5332 states to 5332 states and 8207 transitions. [2022-11-18 18:48:04,044 INFO L78 Accepts]: Start accepts. Automaton has 5332 states and 8207 transitions. Word has length 18 [2022-11-18 18:48:04,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:48:04,048 INFO L495 AbstractCegarLoop]: Abstraction has 5332 states and 8207 transitions. [2022-11-18 18:48:04,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:04,048 INFO L276 IsEmpty]: Start isEmpty. Operand 5332 states and 8207 transitions. [2022-11-18 18:48:04,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 18:48:04,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:48:04,057 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:04,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:48:04,058 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:48:04,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:04,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1872870399, now seen corresponding path program 1 times [2022-11-18 18:48:04,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:04,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385428863] [2022-11-18 18:48:04,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:04,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:04,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:04,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:04,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:04,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385428863] [2022-11-18 18:48:04,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385428863] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:04,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:04,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:48:04,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10495113] [2022-11-18 18:48:04,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:04,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:48:04,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:04,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:48:04,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:48:04,882 INFO L87 Difference]: Start difference. First operand 5332 states and 8207 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:05,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:48:05,279 INFO L93 Difference]: Finished difference Result 10681 states and 16438 transitions. [2022-11-18 18:48:05,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:48:05,279 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 18:48:05,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:48:05,323 INFO L225 Difference]: With dead ends: 10681 [2022-11-18 18:48:05,323 INFO L226 Difference]: Without dead ends: 5352 [2022-11-18 18:48:05,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:48:05,354 INFO L413 NwaCegarLoop]: 4122 mSDtfsCounter, 34 mSDsluCounter, 8239 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 12361 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:48:05,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 12361 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:48:05,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5352 states. [2022-11-18 18:48:05,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5352 to 5335. [2022-11-18 18:48:05,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5335 states, 3877 states have (on average 1.458602011864844) internal successors, (5655), 3979 states have internal predecessors, (5655), 1283 states have call successors, (1283), 175 states have call predecessors, (1283), 174 states have return successors, (1272), 1232 states have call predecessors, (1272), 1272 states have call successors, (1272) [2022-11-18 18:48:05,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5335 states to 5335 states and 8210 transitions. [2022-11-18 18:48:05,726 INFO L78 Accepts]: Start accepts. Automaton has 5335 states and 8210 transitions. Word has length 22 [2022-11-18 18:48:05,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:48:05,727 INFO L495 AbstractCegarLoop]: Abstraction has 5335 states and 8210 transitions. [2022-11-18 18:48:05,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:05,727 INFO L276 IsEmpty]: Start isEmpty. Operand 5335 states and 8210 transitions. [2022-11-18 18:48:05,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 18:48:05,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:48:05,730 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:05,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:48:05,731 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:48:05,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:05,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1930128701, now seen corresponding path program 1 times [2022-11-18 18:48:05,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:05,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343819820] [2022-11-18 18:48:05,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:05,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:05,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:06,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:06,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:06,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343819820] [2022-11-18 18:48:06,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343819820] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:06,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:06,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:48:06,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71253575] [2022-11-18 18:48:06,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:06,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:48:06,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:06,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:48:06,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:48:06,323 INFO L87 Difference]: Start difference. First operand 5335 states and 8210 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:06,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:48:06,660 INFO L93 Difference]: Finished difference Result 5337 states and 8211 transitions. [2022-11-18 18:48:06,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:48:06,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 18:48:06,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:48:06,691 INFO L225 Difference]: With dead ends: 5337 [2022-11-18 18:48:06,691 INFO L226 Difference]: Without dead ends: 5334 [2022-11-18 18:48:06,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:48:06,705 INFO L413 NwaCegarLoop]: 4122 mSDtfsCounter, 4104 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4104 SdHoareTripleChecker+Valid, 4122 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:48:06,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4104 Valid, 4122 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:48:06,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5334 states. [2022-11-18 18:48:07,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5334 to 5334. [2022-11-18 18:48:07,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5334 states, 3877 states have (on average 1.4583440804745937) internal successors, (5654), 3978 states have internal predecessors, (5654), 1282 states have call successors, (1282), 175 states have call predecessors, (1282), 174 states have return successors, (1272), 1232 states have call predecessors, (1272), 1272 states have call successors, (1272) [2022-11-18 18:48:07,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5334 states to 5334 states and 8208 transitions. [2022-11-18 18:48:07,121 INFO L78 Accepts]: Start accepts. Automaton has 5334 states and 8208 transitions. Word has length 22 [2022-11-18 18:48:07,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:48:07,121 INFO L495 AbstractCegarLoop]: Abstraction has 5334 states and 8208 transitions. [2022-11-18 18:48:07,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:07,122 INFO L276 IsEmpty]: Start isEmpty. Operand 5334 states and 8208 transitions. [2022-11-18 18:48:07,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 18:48:07,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:48:07,124 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:07,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:48:07,124 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:48:07,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:07,125 INFO L85 PathProgramCache]: Analyzing trace with hash -2125754380, now seen corresponding path program 1 times [2022-11-18 18:48:07,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:07,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877457369] [2022-11-18 18:48:07,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:07,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:07,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:07,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:07,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877457369] [2022-11-18 18:48:07,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877457369] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:07,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:07,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:48:07,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331168902] [2022-11-18 18:48:07,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:07,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:48:07,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:07,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:48:07,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:48:07,491 INFO L87 Difference]: Start difference. First operand 5334 states and 8208 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:08,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:48:08,158 INFO L93 Difference]: Finished difference Result 15423 states and 23762 transitions. [2022-11-18 18:48:08,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:48:08,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 18:48:08,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:48:08,251 INFO L225 Difference]: With dead ends: 15423 [2022-11-18 18:48:08,251 INFO L226 Difference]: Without dead ends: 10092 [2022-11-18 18:48:08,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:48:08,293 INFO L413 NwaCegarLoop]: 4913 mSDtfsCounter, 3684 mSDsluCounter, 4098 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3684 SdHoareTripleChecker+Valid, 9011 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:48:08,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3684 Valid, 9011 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:48:08,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10092 states. [2022-11-18 18:48:09,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10092 to 10067. [2022-11-18 18:48:09,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10067 states, 7284 states have (on average 1.4623833058758924) internal successors, (10652), 7475 states have internal predecessors, (10652), 2442 states have call successors, (2442), 341 states have call predecessors, (2442), 340 states have return successors, (2432), 2352 states have call predecessors, (2432), 2432 states have call successors, (2432) [2022-11-18 18:48:09,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10067 states to 10067 states and 15526 transitions. [2022-11-18 18:48:09,381 INFO L78 Accepts]: Start accepts. Automaton has 10067 states and 15526 transitions. Word has length 23 [2022-11-18 18:48:09,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:48:09,381 INFO L495 AbstractCegarLoop]: Abstraction has 10067 states and 15526 transitions. [2022-11-18 18:48:09,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:09,382 INFO L276 IsEmpty]: Start isEmpty. Operand 10067 states and 15526 transitions. [2022-11-18 18:48:09,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 18:48:09,384 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:48:09,384 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:09,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 18:48:09,384 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:48:09,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:09,385 INFO L85 PathProgramCache]: Analyzing trace with hash -296649459, now seen corresponding path program 1 times [2022-11-18 18:48:09,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:09,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116797239] [2022-11-18 18:48:09,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:09,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:09,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:09,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:09,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:09,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116797239] [2022-11-18 18:48:09,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116797239] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:09,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:09,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:48:09,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500524477] [2022-11-18 18:48:09,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:09,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:48:09,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:09,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:48:09,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:48:09,768 INFO L87 Difference]: Start difference. First operand 10067 states and 15526 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:10,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:48:10,351 INFO L93 Difference]: Finished difference Result 10069 states and 15527 transitions. [2022-11-18 18:48:10,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:48:10,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 18:48:10,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:48:10,396 INFO L225 Difference]: With dead ends: 10069 [2022-11-18 18:48:10,396 INFO L226 Difference]: Without dead ends: 10066 [2022-11-18 18:48:10,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:48:10,401 INFO L413 NwaCegarLoop]: 4120 mSDtfsCounter, 4101 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4101 SdHoareTripleChecker+Valid, 4120 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:48:10,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4101 Valid, 4120 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:48:10,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10066 states. [2022-11-18 18:48:11,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10066 to 10066. [2022-11-18 18:48:11,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10066 states, 7284 states have (on average 1.46224601867106) internal successors, (10651), 7474 states have internal predecessors, (10651), 2441 states have call successors, (2441), 341 states have call predecessors, (2441), 340 states have return successors, (2432), 2352 states have call predecessors, (2432), 2432 states have call successors, (2432) [2022-11-18 18:48:11,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10066 states to 10066 states and 15524 transitions. [2022-11-18 18:48:11,103 INFO L78 Accepts]: Start accepts. Automaton has 10066 states and 15524 transitions. Word has length 23 [2022-11-18 18:48:11,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:48:11,103 INFO L495 AbstractCegarLoop]: Abstraction has 10066 states and 15524 transitions. [2022-11-18 18:48:11,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:11,104 INFO L276 IsEmpty]: Start isEmpty. Operand 10066 states and 15524 transitions. [2022-11-18 18:48:11,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:48:11,106 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:48:11,107 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:11,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 18:48:11,107 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:48:11,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:11,108 INFO L85 PathProgramCache]: Analyzing trace with hash -607290816, now seen corresponding path program 1 times [2022-11-18 18:48:11,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:11,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400065975] [2022-11-18 18:48:11,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:11,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:11,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:11,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:11,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:11,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400065975] [2022-11-18 18:48:11,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400065975] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:11,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:11,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:48:11,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222416478] [2022-11-18 18:48:11,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:11,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:48:11,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:11,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:48:11,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:48:11,591 INFO L87 Difference]: Start difference. First operand 10066 states and 15524 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:12,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:48:12,183 INFO L93 Difference]: Finished difference Result 10068 states and 15525 transitions. [2022-11-18 18:48:12,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:48:12,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-18 18:48:12,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:48:12,233 INFO L225 Difference]: With dead ends: 10068 [2022-11-18 18:48:12,233 INFO L226 Difference]: Without dead ends: 10065 [2022-11-18 18:48:12,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:48:12,242 INFO L413 NwaCegarLoop]: 4118 mSDtfsCounter, 4098 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4098 SdHoareTripleChecker+Valid, 4118 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:48:12,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4098 Valid, 4118 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:48:12,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10065 states. [2022-11-18 18:48:13,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10065 to 10065. [2022-11-18 18:48:13,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10065 states, 7284 states have (on average 1.4621087314662273) internal successors, (10650), 7473 states have internal predecessors, (10650), 2440 states have call successors, (2440), 341 states have call predecessors, (2440), 340 states have return successors, (2432), 2352 states have call predecessors, (2432), 2432 states have call successors, (2432) [2022-11-18 18:48:13,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10065 states to 10065 states and 15522 transitions. [2022-11-18 18:48:13,119 INFO L78 Accepts]: Start accepts. Automaton has 10065 states and 15522 transitions. Word has length 24 [2022-11-18 18:48:13,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:48:13,119 INFO L495 AbstractCegarLoop]: Abstraction has 10065 states and 15522 transitions. [2022-11-18 18:48:13,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:13,120 INFO L276 IsEmpty]: Start isEmpty. Operand 10065 states and 15522 transitions. [2022-11-18 18:48:13,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 18:48:13,122 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:48:13,122 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:13,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 18:48:13,123 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:48:13,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:13,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1647233424, now seen corresponding path program 1 times [2022-11-18 18:48:13,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:13,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277326340] [2022-11-18 18:48:13,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:13,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:13,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:13,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:13,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:13,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277326340] [2022-11-18 18:48:13,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277326340] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:13,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:13,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:48:13,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928817870] [2022-11-18 18:48:13,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:13,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:48:13,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:13,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:48:13,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:48:13,465 INFO L87 Difference]: Start difference. First operand 10065 states and 15522 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:14,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:48:14,113 INFO L93 Difference]: Finished difference Result 10067 states and 15523 transitions. [2022-11-18 18:48:14,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:48:14,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-18 18:48:14,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:48:14,161 INFO L225 Difference]: With dead ends: 10067 [2022-11-18 18:48:14,161 INFO L226 Difference]: Without dead ends: 10064 [2022-11-18 18:48:14,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:48:14,167 INFO L413 NwaCegarLoop]: 4116 mSDtfsCounter, 4095 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4095 SdHoareTripleChecker+Valid, 4116 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:48:14,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4095 Valid, 4116 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:48:14,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10064 states. [2022-11-18 18:48:15,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10064 to 10064. [2022-11-18 18:48:15,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10064 states, 7284 states have (on average 1.461971444261395) internal successors, (10649), 7472 states have internal predecessors, (10649), 2439 states have call successors, (2439), 341 states have call predecessors, (2439), 340 states have return successors, (2432), 2352 states have call predecessors, (2432), 2432 states have call successors, (2432) [2022-11-18 18:48:15,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10064 states to 10064 states and 15520 transitions. [2022-11-18 18:48:15,106 INFO L78 Accepts]: Start accepts. Automaton has 10064 states and 15520 transitions. Word has length 25 [2022-11-18 18:48:15,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:48:15,107 INFO L495 AbstractCegarLoop]: Abstraction has 10064 states and 15520 transitions. [2022-11-18 18:48:15,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:15,107 INFO L276 IsEmpty]: Start isEmpty. Operand 10064 states and 15520 transitions. [2022-11-18 18:48:15,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-18 18:48:15,109 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:48:15,109 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:15,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 18:48:15,109 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:48:15,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:15,110 INFO L85 PathProgramCache]: Analyzing trace with hash 474288963, now seen corresponding path program 1 times [2022-11-18 18:48:15,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:15,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129614161] [2022-11-18 18:48:15,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:15,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:15,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:15,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:15,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:15,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129614161] [2022-11-18 18:48:15,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129614161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:15,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:15,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:48:15,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810427876] [2022-11-18 18:48:15,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:15,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:48:15,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:15,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:48:15,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:48:15,442 INFO L87 Difference]: Start difference. First operand 10064 states and 15520 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:16,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:48:16,068 INFO L93 Difference]: Finished difference Result 10080 states and 15530 transitions. [2022-11-18 18:48:16,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:48:16,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-18 18:48:16,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:48:16,116 INFO L225 Difference]: With dead ends: 10080 [2022-11-18 18:48:16,116 INFO L226 Difference]: Without dead ends: 10076 [2022-11-18 18:48:16,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:48:16,125 INFO L413 NwaCegarLoop]: 4111 mSDtfsCounter, 4080 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4080 SdHoareTripleChecker+Valid, 4120 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:48:16,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4080 Valid, 4120 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:48:16,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10076 states. [2022-11-18 18:48:17,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10076 to 10074. [2022-11-18 18:48:17,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10074 states, 7292 states have (on average 1.460778935820077) internal successors, (10652), 7478 states have internal predecessors, (10652), 2437 states have call successors, (2437), 345 states have call predecessors, (2437), 344 states have return successors, (2432), 2352 states have call predecessors, (2432), 2432 states have call successors, (2432) [2022-11-18 18:48:17,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10074 states to 10074 states and 15521 transitions. [2022-11-18 18:48:17,394 INFO L78 Accepts]: Start accepts. Automaton has 10074 states and 15521 transitions. Word has length 26 [2022-11-18 18:48:17,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:48:17,394 INFO L495 AbstractCegarLoop]: Abstraction has 10074 states and 15521 transitions. [2022-11-18 18:48:17,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:17,394 INFO L276 IsEmpty]: Start isEmpty. Operand 10074 states and 15521 transitions. [2022-11-18 18:48:17,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-18 18:48:17,396 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:48:17,397 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:17,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 18:48:17,397 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:48:17,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:17,398 INFO L85 PathProgramCache]: Analyzing trace with hash -2092608254, now seen corresponding path program 1 times [2022-11-18 18:48:17,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:17,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110216044] [2022-11-18 18:48:17,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:17,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:17,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:17,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:17,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:17,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110216044] [2022-11-18 18:48:17,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110216044] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:17,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:17,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:48:17,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737690057] [2022-11-18 18:48:17,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:17,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:48:17,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:17,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:48:17,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:48:17,795 INFO L87 Difference]: Start difference. First operand 10074 states and 15521 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:19,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:48:19,115 INFO L93 Difference]: Finished difference Result 30135 states and 46435 transitions. [2022-11-18 18:48:19,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:48:19,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-18 18:48:19,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:48:19,223 INFO L225 Difference]: With dead ends: 30135 [2022-11-18 18:48:19,224 INFO L226 Difference]: Without dead ends: 20064 [2022-11-18 18:48:19,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:48:19,288 INFO L413 NwaCegarLoop]: 6003 mSDtfsCounter, 4067 mSDsluCounter, 4095 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4067 SdHoareTripleChecker+Valid, 10098 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:48:19,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4067 Valid, 10098 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:48:19,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20064 states. [2022-11-18 18:48:21,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20064 to 20044. [2022-11-18 18:48:21,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20044 states, 14502 states have (on average 1.4607640325472349) internal successors, (21184), 14870 states have internal predecessors, (21184), 4857 states have call successors, (4857), 685 states have call predecessors, (4857), 684 states have return successors, (4852), 4692 states have call predecessors, (4852), 4852 states have call successors, (4852) [2022-11-18 18:48:21,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20044 states to 20044 states and 30893 transitions. [2022-11-18 18:48:21,204 INFO L78 Accepts]: Start accepts. Automaton has 20044 states and 30893 transitions. Word has length 29 [2022-11-18 18:48:21,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:48:21,204 INFO L495 AbstractCegarLoop]: Abstraction has 20044 states and 30893 transitions. [2022-11-18 18:48:21,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:21,205 INFO L276 IsEmpty]: Start isEmpty. Operand 20044 states and 30893 transitions. [2022-11-18 18:48:21,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-18 18:48:21,207 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:48:21,208 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:21,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 18:48:21,208 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:48:21,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:21,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1816978387, now seen corresponding path program 1 times [2022-11-18 18:48:21,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:21,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333024347] [2022-11-18 18:48:21,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:21,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:21,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:21,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:21,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:21,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333024347] [2022-11-18 18:48:21,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333024347] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:21,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:21,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:48:21,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508217043] [2022-11-18 18:48:21,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:21,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:48:21,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:21,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:48:21,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:48:21,531 INFO L87 Difference]: Start difference. First operand 20044 states and 30893 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:23,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:48:23,496 INFO L93 Difference]: Finished difference Result 41307 states and 63236 transitions. [2022-11-18 18:48:23,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:48:23,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-18 18:48:23,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:48:23,628 INFO L225 Difference]: With dead ends: 41307 [2022-11-18 18:48:23,628 INFO L226 Difference]: Without dead ends: 21266 [2022-11-18 18:48:23,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:48:23,722 INFO L413 NwaCegarLoop]: 4179 mSDtfsCounter, 3966 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3966 SdHoareTripleChecker+Valid, 4474 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:48:23,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3966 Valid, 4474 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:48:23,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21266 states. [2022-11-18 18:48:25,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21266 to 21203. [2022-11-18 18:48:25,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21203 states, 15250 states have (on average 1.4417704918032788) internal successors, (21987), 15624 states have internal predecessors, (21987), 5044 states have call successors, (5044), 890 states have call predecessors, (5044), 908 states have return successors, (5092), 4900 states have call predecessors, (5092), 5036 states have call successors, (5092) [2022-11-18 18:48:25,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21203 states to 21203 states and 32123 transitions. [2022-11-18 18:48:25,908 INFO L78 Accepts]: Start accepts. Automaton has 21203 states and 32123 transitions. Word has length 27 [2022-11-18 18:48:25,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:48:25,908 INFO L495 AbstractCegarLoop]: Abstraction has 21203 states and 32123 transitions. [2022-11-18 18:48:25,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:25,909 INFO L276 IsEmpty]: Start isEmpty. Operand 21203 states and 32123 transitions. [2022-11-18 18:48:25,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-18 18:48:25,911 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:48:25,912 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:25,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 18:48:25,912 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:48:25,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:25,913 INFO L85 PathProgramCache]: Analyzing trace with hash 490682438, now seen corresponding path program 1 times [2022-11-18 18:48:25,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:25,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241069679] [2022-11-18 18:48:25,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:25,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:26,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:26,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:26,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:26,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241069679] [2022-11-18 18:48:26,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241069679] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:26,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:26,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:48:26,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582226452] [2022-11-18 18:48:26,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:26,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:48:26,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:26,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:48:26,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:48:26,225 INFO L87 Difference]: Start difference. First operand 21203 states and 32123 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:28,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:48:28,130 INFO L93 Difference]: Finished difference Result 21205 states and 32124 transitions. [2022-11-18 18:48:28,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:48:28,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-18 18:48:28,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:48:28,276 INFO L225 Difference]: With dead ends: 21205 [2022-11-18 18:48:28,277 INFO L226 Difference]: Without dead ends: 21189 [2022-11-18 18:48:28,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:48:28,285 INFO L413 NwaCegarLoop]: 4109 mSDtfsCounter, 4084 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4084 SdHoareTripleChecker+Valid, 4109 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:48:28,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4084 Valid, 4109 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:48:28,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21189 states. [2022-11-18 18:48:29,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21189 to 21189. [2022-11-18 18:48:29,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21189 states, 15237 states have (on average 1.4410316991533767) internal successors, (21957), 15610 states have internal predecessors, (21957), 5043 states have call successors, (5043), 890 states have call predecessors, (5043), 908 states have return successors, (5092), 4900 states have call predecessors, (5092), 5036 states have call successors, (5092) [2022-11-18 18:48:29,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21189 states to 21189 states and 32092 transitions. [2022-11-18 18:48:29,852 INFO L78 Accepts]: Start accepts. Automaton has 21189 states and 32092 transitions. Word has length 28 [2022-11-18 18:48:29,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:48:29,852 INFO L495 AbstractCegarLoop]: Abstraction has 21189 states and 32092 transitions. [2022-11-18 18:48:29,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:29,853 INFO L276 IsEmpty]: Start isEmpty. Operand 21189 states and 32092 transitions. [2022-11-18 18:48:29,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-18 18:48:29,871 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:48:29,872 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:29,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 18:48:29,872 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:48:29,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:29,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1520408265, now seen corresponding path program 1 times [2022-11-18 18:48:29,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:29,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422275056] [2022-11-18 18:48:29,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:29,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:29,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:30,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-18 18:48:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:30,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-18 18:48:30,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:30,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 18:48:30,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:30,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:48:30,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:30,686 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 18:48:30,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:30,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422275056] [2022-11-18 18:48:30,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422275056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:30,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:30,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:48:30,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953567214] [2022-11-18 18:48:30,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:30,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:48:30,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:30,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:48:30,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:48:30,688 INFO L87 Difference]: Start difference. First operand 21189 states and 32092 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 18:48:34,278 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 18:48:49,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:48:53,565 WARN L539 Checker$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 18:48:56,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:49:09,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:49:09,533 INFO L93 Difference]: Finished difference Result 23648 states and 35263 transitions. [2022-11-18 18:49:09,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:49:09,534 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 64 [2022-11-18 18:49:09,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:49:09,628 INFO L225 Difference]: With dead ends: 23648 [2022-11-18 18:49:09,629 INFO L226 Difference]: Without dead ends: 21712 [2022-11-18 18:49:09,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:49:09,654 INFO L413 NwaCegarLoop]: 1647 mSDtfsCounter, 2698 mSDsluCounter, 3733 mSDsCounter, 0 mSdLazyCounter, 7208 mSolverCounterSat, 1302 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3088 SdHoareTripleChecker+Valid, 5380 SdHoareTripleChecker+Invalid, 8511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1302 IncrementalHoareTripleChecker+Valid, 7208 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.9s IncrementalHoareTripleChecker+Time [2022-11-18 18:49:09,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3088 Valid, 5380 Invalid, 8511 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1302 Valid, 7208 Invalid, 1 Unknown, 0 Unchecked, 36.9s Time] [2022-11-18 18:49:09,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21712 states. [2022-11-18 18:49:11,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21712 to 21065. [2022-11-18 18:49:11,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21065 states, 15163 states have (on average 1.44212886631933) internal successors, (21867), 15536 states have internal predecessors, (21867), 5023 states have call successors, (5023), 880 states have call predecessors, (5023), 878 states have return successors, (5020), 4860 states have call predecessors, (5020), 5020 states have call successors, (5020) [2022-11-18 18:49:11,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21065 states to 21065 states and 31910 transitions. [2022-11-18 18:49:11,794 INFO L78 Accepts]: Start accepts. Automaton has 21065 states and 31910 transitions. Word has length 64 [2022-11-18 18:49:11,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:49:11,794 INFO L495 AbstractCegarLoop]: Abstraction has 21065 states and 31910 transitions. [2022-11-18 18:49:11,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 18:49:11,795 INFO L276 IsEmpty]: Start isEmpty. Operand 21065 states and 31910 transitions. [2022-11-18 18:49:11,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-18 18:49:11,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:49:11,836 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:11,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 18:49:11,836 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:49:11,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:11,837 INFO L85 PathProgramCache]: Analyzing trace with hash 2068559933, now seen corresponding path program 1 times [2022-11-18 18:49:11,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:11,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124339474] [2022-11-18 18:49:11,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:11,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:11,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:12,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 18:49:12,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:12,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:49:12,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:12,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 18:49:12,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:12,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:49:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:12,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 18:49:12,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:12,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 18:49:12,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:12,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 18:49:12,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:12,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-18 18:49:12,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:12,406 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 18:49:12,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:12,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124339474] [2022-11-18 18:49:12,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124339474] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:49:12,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:49:12,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:49:12,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906572719] [2022-11-18 18:49:12,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:49:12,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:49:12,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:12,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:49:12,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:49:12,410 INFO L87 Difference]: Start difference. First operand 21065 states and 31910 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-18 18:49:16,371 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 18:49:29,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:49:36,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:49:50,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:49:57,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:49:57,875 INFO L93 Difference]: Finished difference Result 64028 states and 96975 transitions. [2022-11-18 18:49:57,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:49:57,876 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 94 [2022-11-18 18:49:57,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:49:58,113 INFO L225 Difference]: With dead ends: 64028 [2022-11-18 18:49:58,113 INFO L226 Difference]: Without dead ends: 42966 [2022-11-18 18:49:58,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:49:58,192 INFO L413 NwaCegarLoop]: 2286 mSDtfsCounter, 6557 mSDsluCounter, 4554 mSDsCounter, 0 mSdLazyCounter, 9677 mSolverCounterSat, 3411 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7113 SdHoareTripleChecker+Valid, 6840 SdHoareTripleChecker+Invalid, 13089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3411 IncrementalHoareTripleChecker+Valid, 9677 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.7s IncrementalHoareTripleChecker+Time [2022-11-18 18:49:58,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7113 Valid, 6840 Invalid, 13089 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3411 Valid, 9677 Invalid, 1 Unknown, 0 Unchecked, 41.7s Time] [2022-11-18 18:49:58,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42966 states. [2022-11-18 18:50:01,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42966 to 41607. [2022-11-18 18:50:01,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41607 states, 29979 states have (on average 1.4431768904900097) internal successors, (43265), 30724 states have internal predecessors, (43265), 9881 states have call successors, (9881), 1748 states have call predecessors, (9881), 1746 states have return successors, (9902), 9558 states have call predecessors, (9902), 9878 states have call successors, (9902) [2022-11-18 18:50:01,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41607 states to 41607 states and 63048 transitions. [2022-11-18 18:50:01,614 INFO L78 Accepts]: Start accepts. Automaton has 41607 states and 63048 transitions. Word has length 94 [2022-11-18 18:50:01,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:50:01,615 INFO L495 AbstractCegarLoop]: Abstraction has 41607 states and 63048 transitions. [2022-11-18 18:50:01,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-18 18:50:01,615 INFO L276 IsEmpty]: Start isEmpty. Operand 41607 states and 63048 transitions. [2022-11-18 18:50:01,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-18 18:50:01,696 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:50:01,696 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 18:50:01,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 18:50:01,697 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:50:01,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:01,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1426440427, now seen corresponding path program 1 times [2022-11-18 18:50:01,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:01,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810855484] [2022-11-18 18:50:01,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:01,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:01,838 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:50:01,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [122914246] [2022-11-18 18:50:01,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:01,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:01,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93200b1b-83fb-4572-9c59-84ae7def17f3/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:50:01,846 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93200b1b-83fb-4572-9c59-84ae7def17f3/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:50:01,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93200b1b-83fb-4572-9c59-84ae7def17f3/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:50:03,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:03,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 4850 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:50:03,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:50:03,496 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-18 18:50:03,506 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:50:03,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:03,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810855484] [2022-11-18 18:50:03,507 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:50:03,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122914246] [2022-11-18 18:50:03,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122914246] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:03,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:03,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:50:03,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356501815] [2022-11-18 18:50:03,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:03,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:50:03,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:03,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:50:03,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:50:03,510 INFO L87 Difference]: Start difference. First operand 41607 states and 63048 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 18:50:07,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:50:07,313 INFO L93 Difference]: Finished difference Result 95012 states and 145358 transitions. [2022-11-18 18:50:07,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:50:07,313 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 105 [2022-11-18 18:50:07,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:50:07,628 INFO L225 Difference]: With dead ends: 95012 [2022-11-18 18:50:07,629 INFO L226 Difference]: Without dead ends: 53408 [2022-11-18 18:50:07,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:50:07,730 INFO L413 NwaCegarLoop]: 5314 mSDtfsCounter, 1153 mSDsluCounter, 14821 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1297 SdHoareTripleChecker+Valid, 20135 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:50:07,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1297 Valid, 20135 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:50:07,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53408 states. [2022-11-18 18:50:11,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53408 to 41639. [2022-11-18 18:50:11,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41639 states, 30003 states have (on average 1.4428223844282237) internal successors, (43289), 30748 states have internal predecessors, (43289), 9881 states have call successors, (9881), 1748 states have call predecessors, (9881), 1754 states have return successors, (9926), 9566 states have call predecessors, (9926), 9878 states have call successors, (9926) [2022-11-18 18:50:11,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41639 states to 41639 states and 63096 transitions. [2022-11-18 18:50:12,006 INFO L78 Accepts]: Start accepts. Automaton has 41639 states and 63096 transitions. Word has length 105 [2022-11-18 18:50:12,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:50:12,007 INFO L495 AbstractCegarLoop]: Abstraction has 41639 states and 63096 transitions. [2022-11-18 18:50:12,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 18:50:12,007 INFO L276 IsEmpty]: Start isEmpty. Operand 41639 states and 63096 transitions. [2022-11-18 18:50:12,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-18 18:50:12,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:50:12,069 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:12,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93200b1b-83fb-4572-9c59-84ae7def17f3/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 18:50:12,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93200b1b-83fb-4572-9c59-84ae7def17f3/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 18:50:12,284 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:50:12,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:12,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1516648962, now seen corresponding path program 1 times [2022-11-18 18:50:12,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:12,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294360133] [2022-11-18 18:50:12,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:12,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:12,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:12,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-18 18:50:12,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:12,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 18:50:12,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:12,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 18:50:12,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:12,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 18:50:12,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:12,894 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 18:50:12,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:12,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294360133] [2022-11-18 18:50:12,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294360133] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:12,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:12,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:50:12,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547554910] [2022-11-18 18:50:12,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:12,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:50:12,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:12,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:50:12,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:50:12,896 INFO L87 Difference]: Start difference. First operand 41639 states and 63096 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 18:50:43,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:50:43,979 INFO L93 Difference]: Finished difference Result 104294 states and 158041 transitions. [2022-11-18 18:50:43,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:50:43,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 98 [2022-11-18 18:50:43,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:50:44,204 INFO L225 Difference]: With dead ends: 104294 [2022-11-18 18:50:44,204 INFO L226 Difference]: Without dead ends: 62658 [2022-11-18 18:50:44,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:50:44,316 INFO L413 NwaCegarLoop]: 2766 mSDtfsCounter, 6059 mSDsluCounter, 3488 mSDsCounter, 0 mSdLazyCounter, 6579 mSolverCounterSat, 2035 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6679 SdHoareTripleChecker+Valid, 6254 SdHoareTripleChecker+Invalid, 8614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2035 IncrementalHoareTripleChecker+Valid, 6579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:50:44,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6679 Valid, 6254 Invalid, 8614 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2035 Valid, 6579 Invalid, 0 Unknown, 0 Unchecked, 25.2s Time] [2022-11-18 18:50:44,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62658 states. [2022-11-18 18:50:49,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62658 to 62427. [2022-11-18 18:50:49,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62427 states, 45007 states have (on average 1.4425978181171817) internal successors, (64927), 46124 states have internal predecessors, (64927), 14791 states have call successors, (14791), 2618 states have call predecessors, (14791), 2628 states have return successors, (14860), 14320 states have call predecessors, (14860), 14788 states have call successors, (14860) [2022-11-18 18:50:49,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62427 states to 62427 states and 94578 transitions. [2022-11-18 18:50:49,427 INFO L78 Accepts]: Start accepts. Automaton has 62427 states and 94578 transitions. Word has length 98 [2022-11-18 18:50:49,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:50:49,428 INFO L495 AbstractCegarLoop]: Abstraction has 62427 states and 94578 transitions. [2022-11-18 18:50:49,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 18:50:49,428 INFO L276 IsEmpty]: Start isEmpty. Operand 62427 states and 94578 transitions. [2022-11-18 18:50:49,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-18 18:50:49,492 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:50:49,492 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:49,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 18:50:49,493 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:50:49,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:49,493 INFO L85 PathProgramCache]: Analyzing trace with hash -883490266, now seen corresponding path program 1 times [2022-11-18 18:50:49,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:49,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096268940] [2022-11-18 18:50:49,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:49,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:49,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:50,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 18:50:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:50,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 18:50:50,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:50,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 18:50:50,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:50,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 18:50:50,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:50,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 18:50:50,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:51,006 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 18:50:51,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:51,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096268940] [2022-11-18 18:50:51,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096268940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:51,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:51,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 18:50:51,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813833979] [2022-11-18 18:50:51,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:51,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:50:51,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:51,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:50:51,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:50:51,009 INFO L87 Difference]: Start difference. First operand 62427 states and 94578 transitions. Second operand has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 18:50:55,296 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 18:51:08,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:51:17,374 WARN L539 Checker$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 18:51:37,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:51:39,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:51:40,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:51:41,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 18:51:53,471 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 18:52:04,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:52:04,369 INFO L93 Difference]: Finished difference Result 122119 states and 186341 transitions. [2022-11-18 18:52:04,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 18:52:04,370 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-11-18 18:52:04,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:52:04,592 INFO L225 Difference]: With dead ends: 122119 [2022-11-18 18:52:04,592 INFO L226 Difference]: Without dead ends: 59695 [2022-11-18 18:52:04,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-11-18 18:52:04,745 INFO L413 NwaCegarLoop]: 1589 mSDtfsCounter, 2089 mSDsluCounter, 8377 mSDsCounter, 0 mSdLazyCounter, 15577 mSolverCounterSat, 222 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2547 SdHoareTripleChecker+Valid, 9966 SdHoareTripleChecker+Invalid, 15801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 15577 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:52:04,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2547 Valid, 9966 Invalid, 15801 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [222 Valid, 15577 Invalid, 2 Unknown, 0 Unchecked, 68.1s Time] [2022-11-18 18:52:04,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59695 states. [2022-11-18 18:52:09,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59695 to 59471. [2022-11-18 18:52:09,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59471 states, 43349 states have (on average 1.4478996055272324) internal successors, (62765), 44129 states have internal predecessors, (62765), 13973 states have call successors, (13973), 2137 states have call predecessors, (13973), 2148 states have return successors, (14044), 13816 states have call predecessors, (14044), 13972 states have call successors, (14044) [2022-11-18 18:52:09,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59471 states to 59471 states and 90782 transitions. [2022-11-18 18:52:09,472 INFO L78 Accepts]: Start accepts. Automaton has 59471 states and 90782 transitions. Word has length 101 [2022-11-18 18:52:09,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:52:09,472 INFO L495 AbstractCegarLoop]: Abstraction has 59471 states and 90782 transitions. [2022-11-18 18:52:09,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 18:52:09,472 INFO L276 IsEmpty]: Start isEmpty. Operand 59471 states and 90782 transitions. [2022-11-18 18:52:09,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-11-18 18:52:09,550 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:52:09,551 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:52:09,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 18:52:09,551 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:52:09,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:52:09,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1438502871, now seen corresponding path program 1 times [2022-11-18 18:52:09,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:52:09,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402592922] [2022-11-18 18:52:09,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:52:09,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:52:09,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:10,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 18:52:10,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:10,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:52:10,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:10,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-18 18:52:10,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:10,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 18:52:10,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:10,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 18:52:10,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:10,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:52:10,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:10,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:52:10,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:10,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 18:52:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:10,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 18:52:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:10,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 18:52:10,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:10,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:52:10,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:10,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 18:52:10,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:10,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 18:52:10,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:10,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-18 18:52:10,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:10,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:52:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:10,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 18:52:10,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:10,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 18:52:10,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:10,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-18 18:52:10,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:10,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:52:10,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:10,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 18:52:10,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:10,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 18:52:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:10,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-18 18:52:10,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:10,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:52:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:10,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 18:52:10,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:10,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-11-18 18:52:10,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:10,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:52:10,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:10,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 18:52:10,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:10,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-11-18 18:52:10,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:10,617 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2022-11-18 18:52:10,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:52:10,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402592922] [2022-11-18 18:52:10,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402592922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:52:10,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:52:10,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:52:10,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482715593] [2022-11-18 18:52:10,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:52:10,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:52:10,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:52:10,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:52:10,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:52:10,620 INFO L87 Difference]: Start difference. First operand 59471 states and 90782 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17)